Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306183
A. Andriyanov
The results of parametric analysis in single-phase voltage source inverters with bipolar reversible sinusoidal pulse-width modulation are considered.The effect of quantization factor on the domain size with desired dynamic mode is studied. Research on the selected space of system parameters by variation of pulse-width modulation (PWM) quantization frequency with constant frequency of control voltage and conversely by variation of control voltage frequency with constant quantization frequency is carried out.It is shown that control voltage frequency variation with constant quantization frequency has virtually no effect on domain with desired dynamic mode. At the same time, increasing switching frequency, if it is technically possible, allows to completely eliminate undesired modes without using complex nonlinear dynamic processes control algorithms.Mechanism of quantization factor influence on domain with desired dynamic mode for systems with sinusoidal PWM is presented for the first time. The obtained results can be used in parametric synthesis of control systems in single-phase voltage source inverters based on various types of a sinusoidal PWM.
{"title":"Parametric Analysis of Domains with Desired Dynamic Modes in Single-Phase Voltage Source Inverters","authors":"A. Andriyanov","doi":"10.1109/Dynamics50954.2020.9306183","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306183","url":null,"abstract":"The results of parametric analysis in single-phase voltage source inverters with bipolar reversible sinusoidal pulse-width modulation are considered.The effect of quantization factor on the domain size with desired dynamic mode is studied. Research on the selected space of system parameters by variation of pulse-width modulation (PWM) quantization frequency with constant frequency of control voltage and conversely by variation of control voltage frequency with constant quantization frequency is carried out.It is shown that control voltage frequency variation with constant quantization frequency has virtually no effect on domain with desired dynamic mode. At the same time, increasing switching frequency, if it is technically possible, allows to completely eliminate undesired modes without using complex nonlinear dynamic processes control algorithms.Mechanism of quantization factor influence on domain with desired dynamic mode for systems with sinusoidal PWM is presented for the first time. The obtained results can be used in parametric synthesis of control systems in single-phase voltage source inverters based on various types of a sinusoidal PWM.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115350326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306168
N. Vyunnik, Y. Zakharov, B. Lobasenko, A. Semenov
Waste free production of food raw material is a significant task in food industry. In order to solve this problem it is important to separate milk components to manufacture different foodstuff thereafter. One of the challenging means of milk separation is the application of membrane technologies that possess more advantages compared with traditional methods such as fractioning, absorption and extraction due to its cost-effectiveness and preserving native state of raw materials. It has to be noted that this separation technology demands boundary layer separation on the membrane surface with high protein concentration. A set of devices (concentrators) of different configurations for removal of wall layer has been presented. Their design characteristics can significantly influence the efficiency of concentration process. The paper has studied the concentration process of high molecular substance and the correspondence between concentration quality and input data based on the mathematical model of motion of two-component viscous incompressible fluid with variable density and viscosity.
{"title":"Computational Modelling of Motion of High Molecular Compound (Hmc) Solution in Membrane Concentration Unit","authors":"N. Vyunnik, Y. Zakharov, B. Lobasenko, A. Semenov","doi":"10.1109/Dynamics50954.2020.9306168","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306168","url":null,"abstract":"Waste free production of food raw material is a significant task in food industry. In order to solve this problem it is important to separate milk components to manufacture different foodstuff thereafter. One of the challenging means of milk separation is the application of membrane technologies that possess more advantages compared with traditional methods such as fractioning, absorption and extraction due to its cost-effectiveness and preserving native state of raw materials. It has to be noted that this separation technology demands boundary layer separation on the membrane surface with high protein concentration. A set of devices (concentrators) of different configurations for removal of wall layer has been presented. Their design characteristics can significantly influence the efficiency of concentration process. The paper has studied the concentration process of high molecular substance and the correspondence between concentration quality and input data based on the mathematical model of motion of two-component viscous incompressible fluid with variable density and viscosity.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"4 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115904933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306131
V. Zhmud, O. Stukach, L. Dimitrov, Y. Nosek
Automatic feedback control systems provide the highest control accuracy in all engineering and technology fields. It applies both to static and dynamic accuracy. If the object is prone to oscillations and also contains a significant delay, then it may be an initial movement in the opposite direction in the transition process. Here the output changes in the opposite direction to the required. Such behavior of the transition process may be unacceptable in many tasks, although the final movement can be achieved in the right direction and by the desired increment. It means the static error can be made negligible. There are many objects prone to oscillations in nature and technology. These are actuators on string suspensions, an inverted pendulum, especially with many plants, the robotic vehicles, etc. Among the many practical problems in the paper we consider the class of Managed Pressure Drilling Control System and logging during drilling, where is a strong tendency to fluctuations. But this is also a characteristic feature of many technological processes. Unfortunately, attention is rarely paid to eliminate a reverse overshoot among indicators of dynamic accuracy in these systems. Many textbooks for a regulator design even do not mention this characteristic due to rare appearances. However, reverse overshoot is one of the most critical indicators of dynamic accuracy. This paper solves the problem of the reverse overshoot suppressing for control of the most complex dynamic objects based on analysis of the various methods of controller design and method of numerical optimization. Additional techniques have been found that allow the most effective solution. It has been tested by simulation modeling corresponding to the tasks of managed well drilling.
{"title":"Reverse Overshoot Suppression in a Managed Pressure Drilling Control System","authors":"V. Zhmud, O. Stukach, L. Dimitrov, Y. Nosek","doi":"10.1109/Dynamics50954.2020.9306131","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306131","url":null,"abstract":"Automatic feedback control systems provide the highest control accuracy in all engineering and technology fields. It applies both to static and dynamic accuracy. If the object is prone to oscillations and also contains a significant delay, then it may be an initial movement in the opposite direction in the transition process. Here the output changes in the opposite direction to the required. Such behavior of the transition process may be unacceptable in many tasks, although the final movement can be achieved in the right direction and by the desired increment. It means the static error can be made negligible. There are many objects prone to oscillations in nature and technology. These are actuators on string suspensions, an inverted pendulum, especially with many plants, the robotic vehicles, etc. Among the many practical problems in the paper we consider the class of Managed Pressure Drilling Control System and logging during drilling, where is a strong tendency to fluctuations. But this is also a characteristic feature of many technological processes. Unfortunately, attention is rarely paid to eliminate a reverse overshoot among indicators of dynamic accuracy in these systems. Many textbooks for a regulator design even do not mention this characteristic due to rare appearances. However, reverse overshoot is one of the most critical indicators of dynamic accuracy. This paper solves the problem of the reverse overshoot suppressing for control of the most complex dynamic objects based on analysis of the various methods of controller design and method of numerical optimization. Additional techniques have been found that allow the most effective solution. It has been tested by simulation modeling corresponding to the tasks of managed well drilling.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128359463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306189
Y. Monakhov, A.P. Kuznetsova, M. Monakhov, A. Telny, Ilya Bednyatsky
In this article, authors present the results of testing the modified HTB traffic control algorithm in an experimental setup. The algorithm is implemented as a Linux kernel module. An analysis of the experimental results revealed the effect of uneven packet loss in priority classes. In the second part of the article, the authors propose a solution to this problem by applying a distribution scheme for the excess of tokens, according to which excess class tokens are given to the leaf with the highest priority. The new modification of the algorithm was simulated in the AnyLogic environment. The results of an experimental study demonstrated that dividing the excess tokens of the parent class between daughter classes is less effective in terms of network performance than allocating the excess tokens to a high-priority class during the competition for tokens between classes. In general, a modification of the HTB algorithm that implements the proposed token surplus distribution scheme yields more consistent delay times for the high-priority class.
{"title":"Performance Evaluation of the Modified HTB Algorithm","authors":"Y. Monakhov, A.P. Kuznetsova, M. Monakhov, A. Telny, Ilya Bednyatsky","doi":"10.1109/Dynamics50954.2020.9306189","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306189","url":null,"abstract":"In this article, authors present the results of testing the modified HTB traffic control algorithm in an experimental setup. The algorithm is implemented as a Linux kernel module. An analysis of the experimental results revealed the effect of uneven packet loss in priority classes. In the second part of the article, the authors propose a solution to this problem by applying a distribution scheme for the excess of tokens, according to which excess class tokens are given to the leaf with the highest priority. The new modification of the algorithm was simulated in the AnyLogic environment. The results of an experimental study demonstrated that dividing the excess tokens of the parent class between daughter classes is less effective in terms of network performance than allocating the excess tokens to a high-priority class during the competition for tokens between classes. In general, a modification of the HTB algorithm that implements the proposed token surplus distribution scheme yields more consistent delay times for the high-priority class.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125305767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306181
V. Erokhin, R. R. Fakhrutdinov, R. A. Wolf, Z. B. Sadykov, S. Zavyalov
In connection with the development of wireless technologies, there is the increasing number of small-sized mobile devices. For the operation of such devices, small-sized power amplifiers are required to provide a power of several mW. Increasing requirements for miniaturization lead to the need to develop devices such as systems-on-chip, in which all the IP blocks of the complex device are placed on one substrate. The paper describes the broadband power amplifier operating in the frequency range of 100 MHz…2.5 GHz. The output power is 2 mW, the consumption current is 40 mA. The output SWR does not exceed 2, the output resistance is 50 Ω. The amplifier is developed in the standard process of 65 nm CMOS.
{"title":"Integrated Broadband Power Amplifier for Systemon-Chips Wireless Devices in 65 nm CMOS Process","authors":"V. Erokhin, R. R. Fakhrutdinov, R. A. Wolf, Z. B. Sadykov, S. Zavyalov","doi":"10.1109/Dynamics50954.2020.9306181","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306181","url":null,"abstract":"In connection with the development of wireless technologies, there is the increasing number of small-sized mobile devices. For the operation of such devices, small-sized power amplifiers are required to provide a power of several mW. Increasing requirements for miniaturization lead to the need to develop devices such as systems-on-chip, in which all the IP blocks of the complex device are placed on one substrate. The paper describes the broadband power amplifier operating in the frequency range of 100 MHz…2.5 GHz. The output power is 2 mW, the consumption current is 40 mA. The output SWR does not exceed 2, the output resistance is 50 Ω. The amplifier is developed in the standard process of 65 nm CMOS.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130815955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306165
I. Siddikov, D. Umurzakova
The structure and principles of the development of fuzzy PID controllers are analyzed. A simple four-step method for tuning a fuzzy PID controller is proposed. A controller has been developed that provides typical transient requirements using a small number of control rules. Proposed methodology confirmed examples of digital modeling.
{"title":"Synthesis Algorithm for Fuzzy-logic Controllers","authors":"I. Siddikov, D. Umurzakova","doi":"10.1109/Dynamics50954.2020.9306165","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306165","url":null,"abstract":"The structure and principles of the development of fuzzy PID controllers are analyzed. A simple four-step method for tuning a fuzzy PID controller is proposed. A controller has been developed that provides typical transient requirements using a small number of control rules. Proposed methodology confirmed examples of digital modeling.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124498241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306186
E. Petrov, N. Kharina
This work considers the method for generating high-resolution radar images (RI) based on the multipath side looking (SL) radar (MPSL), consisting of a set of independent single-beam small-sized radar stations (SRS) with synthetic aperture of the antenna (SAR), working on transmission and reception in any given polarization on board the aircraft (AC). As probing signals, binary PM signals, which belong to one cluster L formed on binary sequences of the maximum linear recurrent period (MLRP) equal to L = 2m −1, m ≥ 2 are used. Emission of probing and reception of return PM signals are carried out simultaneously in all cases. Each SRS is assigned its own PM signal from the cluster L. Based on the representation of binary MLRP by the complex Markov chain with two states for one homogeneous single-beam RLS, the receiver is synthesized with the L-channel recurrent matched filter (RMF), own or common for all RLS with SAR included in MRLS, for the simultaneous reception of several or all of the cluster L return PM signals of one and the same azimuth in all SAR beams in range. The characteristic feature of the RMF is the absence in outputs of the RMF side lobes of two-dimensional ACF received PM signals, which allows for simultaneous nonlinear filtering of the discrete and continuous parameters of return PM signals: energy - amplitude fluctuating according to Gaussian or Rayleigh laws, and non-energy - frequency, delay and etc., which, due to cross-links, provide a high estimate of the discrete parameter of the return PM signals, and, accordingly, high resolution RI. To assess the effectiveness of the proposed method, computer simulation of the formation of the RI of the artificial relief with various objects was performed under the influence of Gaussian amplitude fluctuations in return PM signals with Gaussian Doppler random frequencies and their delays relative to the emission time. The simulation results demonstrate the reception of high-resolution real-time RI data in range and azimuth in case of collaborative nonlinear filtering of the discrete (phase) and continuous parameters (amplitude, delay and Doppler frequency) of the return PM signals with minimal computational resources on board the ACt in real time.
{"title":"Generating Digital Radar Images Using Nonlinear Filtering Methods for Discrete and Continuous Parameters of Return PM Signals","authors":"E. Petrov, N. Kharina","doi":"10.1109/Dynamics50954.2020.9306186","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306186","url":null,"abstract":"This work considers the method for generating high-resolution radar images (RI) based on the multipath side looking (SL) radar (MPSL), consisting of a set of independent single-beam small-sized radar stations (SRS) with synthetic aperture of the antenna (SAR), working on transmission and reception in any given polarization on board the aircraft (AC). As probing signals, binary PM signals, which belong to one cluster L formed on binary sequences of the maximum linear recurrent period (MLRP) equal to L = 2m −1, m ≥ 2 are used. Emission of probing and reception of return PM signals are carried out simultaneously in all cases. Each SRS is assigned its own PM signal from the cluster L. Based on the representation of binary MLRP by the complex Markov chain with two states for one homogeneous single-beam RLS, the receiver is synthesized with the L-channel recurrent matched filter (RMF), own or common for all RLS with SAR included in MRLS, for the simultaneous reception of several or all of the cluster L return PM signals of one and the same azimuth in all SAR beams in range. The characteristic feature of the RMF is the absence in outputs of the RMF side lobes of two-dimensional ACF received PM signals, which allows for simultaneous nonlinear filtering of the discrete and continuous parameters of return PM signals: energy - amplitude fluctuating according to Gaussian or Rayleigh laws, and non-energy - frequency, delay and etc., which, due to cross-links, provide a high estimate of the discrete parameter of the return PM signals, and, accordingly, high resolution RI. To assess the effectiveness of the proposed method, computer simulation of the formation of the RI of the artificial relief with various objects was performed under the influence of Gaussian amplitude fluctuations in return PM signals with Gaussian Doppler random frequencies and their delays relative to the emission time. The simulation results demonstrate the reception of high-resolution real-time RI data in range and azimuth in case of collaborative nonlinear filtering of the discrete (phase) and continuous parameters (amplitude, delay and Doppler frequency) of the return PM signals with minimal computational resources on board the ACt in real time.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306123
D. Bannov, V. Polishchuk, D. Antyaskin
The relevance of research is conditioned with huge dependence of thermal power plants (TPP) from reliable operation of the electrical drives of common auxiliaries. Almost the entire electric drive of common auxiliaries at TPP is operating based on powerful high-voltage squirrel cage induction motor (SCIM). Usually, work specifics of high-voltage SCIMs at TPPs are severe starting conditions (feeding pumps, grinders, crushers, smoke exhausters, blowing fans, etc.). SCIM failures of critical mechanisms at TPP lead either to the shutdown of the power unit, or at least to decrease of the level of electrical generation. At the same time, despite the most difficult and usually irreversible consequences from damage to squirrel cage rotor, (SCR) there is no protection against it. The problem is revealed only during the overhaul period. The breakage of the SCR bars is latent. It can exist for a sufficiently long time without having a critical effect on the machine work mode. Nevertheless, the fact of the malfunction can be considered as an emergency state of the SCIM.In this paper we purpose is development and experimental testing of diagnosis method of SCIM bar break based on mathematical data processing from sensors of stator current. For solving of set goal the theoretical and experimental research methods were applied. Theoretical ones include theory of electric drives, theory of electrical machines, numerical methods for approximating and smoothing experimental data, method of regression analysis. This research was conducted on the experimental installation which was specially created for goals of bar break diagnosis.During approximation of received signals of stator current the original detection algorithm of diagnosis attribute of rotors winding damage is proposed. The criterion of rotor circuit damage was identified and dependence of this criterion on the damage level of SCIM squirrel cage is obtained.
{"title":"Dynamic Identification of Internal Damages in Induction Motors Based on Analysis Vector of Stator Currents","authors":"D. Bannov, V. Polishchuk, D. Antyaskin","doi":"10.1109/Dynamics50954.2020.9306123","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306123","url":null,"abstract":"The relevance of research is conditioned with huge dependence of thermal power plants (TPP) from reliable operation of the electrical drives of common auxiliaries. Almost the entire electric drive of common auxiliaries at TPP is operating based on powerful high-voltage squirrel cage induction motor (SCIM). Usually, work specifics of high-voltage SCIMs at TPPs are severe starting conditions (feeding pumps, grinders, crushers, smoke exhausters, blowing fans, etc.). SCIM failures of critical mechanisms at TPP lead either to the shutdown of the power unit, or at least to decrease of the level of electrical generation. At the same time, despite the most difficult and usually irreversible consequences from damage to squirrel cage rotor, (SCR) there is no protection against it. The problem is revealed only during the overhaul period. The breakage of the SCR bars is latent. It can exist for a sufficiently long time without having a critical effect on the machine work mode. Nevertheless, the fact of the malfunction can be considered as an emergency state of the SCIM.In this paper we purpose is development and experimental testing of diagnosis method of SCIM bar break based on mathematical data processing from sensors of stator current. For solving of set goal the theoretical and experimental research methods were applied. Theoretical ones include theory of electric drives, theory of electrical machines, numerical methods for approximating and smoothing experimental data, method of regression analysis. This research was conducted on the experimental installation which was specially created for goals of bar break diagnosis.During approximation of received signals of stator current the original detection algorithm of diagnosis attribute of rotors winding damage is proposed. The criterion of rotor circuit damage was identified and dependence of this criterion on the damage level of SCIM squirrel cage is obtained.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130117567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306127
D. Chupin, E. Gontovoj
In this article, the dependence of various diagnostic parameters on the degree of charge of Nickel-metal hydride batteries is studied. The first parameter was the characteristic frequency – the frequency of the measuring signal, at which the value of the reactance becomes zero. The other two parameters were the angular coefficient of inclination k and the coefficient of displacement b of the linear equation, which can be approximated by the frequency dependence of the reactance. The study showed that only the characteristic frequency and displacement coefficient are dependent on the degree of charge and can potentially be used in battery monitoring and diagnostics systems.
{"title":"The Research of Methods to Determine the State of Charge of Nimh Batteries","authors":"D. Chupin, E. Gontovoj","doi":"10.1109/Dynamics50954.2020.9306127","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306127","url":null,"abstract":"In this article, the dependence of various diagnostic parameters on the degree of charge of Nickel-metal hydride batteries is studied. The first parameter was the characteristic frequency – the frequency of the measuring signal, at which the value of the reactance becomes zero. The other two parameters were the angular coefficient of inclination k and the coefficient of displacement b of the linear equation, which can be approximated by the frequency dependence of the reactance. The study showed that only the characteristic frequency and displacement coefficient are dependent on the degree of charge and can potentially be used in battery monitoring and diagnostics systems.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129328818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-10DOI: 10.1109/Dynamics50954.2020.9306163
I. Ershov, O. Stukach, N. Myasnikova, I. Tsydenzhapov, I. Sychev
High resolution DTS research has sufficiently advanced. However further progress will be achieved due to mathematical techniques and algorithms. Novel mathematical algorithms can expand measurement traceability. Outcomes from discrete wavelet transformations are not sufficient for many practical applications. We propose the extremal filtration method as an analog of the empirical mode decomposition (EMD) approach. Advantage of the extremal filtration is the simplification of mathematical calculations. The essence of the method is finding the moving average value of extremums with the continued removing of the highest frequency components from the signal, smoothing of the curve, and subsequent transformations. Difference between the modeling reference signal and signal with Gaussian noise as error of the method is very small: most of the samples (90 %) are within an interval of ±0.003. It is an excellent result for the low signal-to-noise ratio (SNR). However, significant short-term splashes of error (which can reach the value of 0.038) occurred during the transition process.The method can filter low-SNR DTS signals. We expect that the extremal filtration of one target signal is much more effective than a simple averaging of many target OTDR pulses often used in practice. Also, this method can be customized for specific problems connected with subtracting the highfrequency components from the signal. This expands the field of use for the method.
{"title":"The Resolution Enhancement in the Distributed Temperature Sensor with the Extremal Filtration Method","authors":"I. Ershov, O. Stukach, N. Myasnikova, I. Tsydenzhapov, I. Sychev","doi":"10.1109/Dynamics50954.2020.9306163","DOIUrl":"https://doi.org/10.1109/Dynamics50954.2020.9306163","url":null,"abstract":"High resolution DTS research has sufficiently advanced. However further progress will be achieved due to mathematical techniques and algorithms. Novel mathematical algorithms can expand measurement traceability. Outcomes from discrete wavelet transformations are not sufficient for many practical applications. We propose the extremal filtration method as an analog of the empirical mode decomposition (EMD) approach. Advantage of the extremal filtration is the simplification of mathematical calculations. The essence of the method is finding the moving average value of extremums with the continued removing of the highest frequency components from the signal, smoothing of the curve, and subsequent transformations. Difference between the modeling reference signal and signal with Gaussian noise as error of the method is very small: most of the samples (90 %) are within an interval of ±0.003. It is an excellent result for the low signal-to-noise ratio (SNR). However, significant short-term splashes of error (which can reach the value of 0.038) occurred during the transition process.The method can filter low-SNR DTS signals. We expect that the extremal filtration of one target signal is much more effective than a simple averaging of many target OTDR pulses often used in practice. Also, this method can be customized for specific problems connected with subtracting the highfrequency components from the signal. This expands the field of use for the method.","PeriodicalId":419225,"journal":{"name":"2020 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123444424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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