Pub Date : 2016-03-21DOI: 10.1109/SSD.2016.7473692
Abdul-Wahid A. Saif
This paper concerned with the design method of state and disturbance observers for discrete-time nonlinear systems. An augmented model is constructed by assuming that the estimated disturbance is in state-space variable form. A sufficient condition for the existence and convergence of the robust observer is proposed in terms of linear matrix inequality (LMI). The gains of the state and disturbance observers are obtained via solving the LMI. Finally, a numerical example is given to show the effectiveness of the proposed method.
{"title":"Design of disturbance observers for nonlinear discrete time systems","authors":"Abdul-Wahid A. Saif","doi":"10.1109/SSD.2016.7473692","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473692","url":null,"abstract":"This paper concerned with the design method of state and disturbance observers for discrete-time nonlinear systems. An augmented model is constructed by assuming that the estimated disturbance is in state-space variable form. A sufficient condition for the existence and convergence of the robust observer is proposed in terms of linear matrix inequality (LMI). The gains of the state and disturbance observers are obtained via solving the LMI. Finally, a numerical example is given to show the effectiveness of the proposed method.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115910925","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473727
N. Gallah, K. Besbes
In this work, a novel design of Electroosmotic micropump with low voltage for Lab on a Chip application is proposed and investigated using theoretical analysis and numerical simulations. The micropump is equipped with four microelectrodes which are embedded at the surface with 45° inclination nearby the inlet and outlet. Some microchannels are implanted through the micropump in purpose to attend a reasonable flow rate for Lab on a Chip application with low voltage. Theoretical analysis and numerical simulations are performed to predict the flow rate of the micropump and the microchannels effect on pumping efficiency. The effect of various microchannels dimension on the performance of the micropump in term of width and length is investigated. Good agreement is shown between the model results and.
{"title":"Electroosmotic micropump analysis for lab on chip water quality monitoring","authors":"N. Gallah, K. Besbes","doi":"10.1109/SSD.2016.7473727","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473727","url":null,"abstract":"In this work, a novel design of Electroosmotic micropump with low voltage for Lab on a Chip application is proposed and investigated using theoretical analysis and numerical simulations. The micropump is equipped with four microelectrodes which are embedded at the surface with 45° inclination nearby the inlet and outlet. Some microchannels are implanted through the micropump in purpose to attend a reasonable flow rate for Lab on a Chip application with low voltage. Theoretical analysis and numerical simulations are performed to predict the flow rate of the micropump and the microchannels effect on pumping efficiency. The effect of various microchannels dimension on the performance of the micropump in term of width and length is investigated. Good agreement is shown between the model results and.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115278720","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473736
F. A. Khan, A. Yousaf, L. Reindl
This paper presents various designs of a multi segment capacitive level sensor for fluid monitoring. Among the investigated designs, the mixed model (with global and local E-field or electric fields concept) of capacitive level sensor probe encompasses an efficient sensitivity which is approximately same as basic model (without global and local electric fields concept) of sensor. The main advantage of mixed model is to simultaneously detect the coating effect on the sensor by using local electric fields and the continuous level monitoring by global electric fields. The capacitive level sensor probe is based on basic model with a length of 1 m which is divided into 11 segments. Each segment has a length and separation distance of 89.5 mm and 1.55 mm respectively. Polypropylene material is used for insulation in between the sensor and fluid. Finite element method analysis is used as a main tool to examine the sensitivity of the various designs in different permittivity of liquids. An algorithm is also developed and measurements are evaluated for a basic model.
{"title":"Design and FEM analysis of multi segment capacitive level sensor based on local and global E-fields)","authors":"F. A. Khan, A. Yousaf, L. Reindl","doi":"10.1109/SSD.2016.7473736","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473736","url":null,"abstract":"This paper presents various designs of a multi segment capacitive level sensor for fluid monitoring. Among the investigated designs, the mixed model (with global and local E-field or electric fields concept) of capacitive level sensor probe encompasses an efficient sensitivity which is approximately same as basic model (without global and local electric fields concept) of sensor. The main advantage of mixed model is to simultaneously detect the coating effect on the sensor by using local electric fields and the continuous level monitoring by global electric fields. The capacitive level sensor probe is based on basic model with a length of 1 m which is divided into 11 segments. Each segment has a length and separation distance of 89.5 mm and 1.55 mm respectively. Polypropylene material is used for insulation in between the sensor and fluid. Finite element method analysis is used as a main tool to examine the sensitivity of the various designs in different permittivity of liquids. An algorithm is also developed and measurements are evaluated for a basic model.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132338498","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473677
Jusang Park, Junho Yu, Sehyuk Ann, Namsoo Kim
This paper proposes a low power CMOS temperature-to-current generator (TCG) for voltage-mode smart temperature sensor which is composed of bias circuit, proportional-to-absolute-temperature (PTAT) current generator, and differential current generator. The multiple-block system is to obtain a reference voltage which is dependent on temperature and is applied for a temperature sensor. The current references and cascode structure are applied in PTAT current generator. In differential current generator, current mirror and reference current are used to obtain a temperature sensing current. Low power TCG is designed with 0.35-μm CMOS process. Simulation test shows that the proposed TCG is operated up to 120 μA with power dissipation of 2 mW. The sensing current shows to increase linearly with increase of temperature in the ranges of -30 ~ 80°C.
{"title":"CMOS cascode structure current reference for low power temperature sensor","authors":"Jusang Park, Junho Yu, Sehyuk Ann, Namsoo Kim","doi":"10.1109/SSD.2016.7473677","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473677","url":null,"abstract":"This paper proposes a low power CMOS temperature-to-current generator (TCG) for voltage-mode smart temperature sensor which is composed of bias circuit, proportional-to-absolute-temperature (PTAT) current generator, and differential current generator. The multiple-block system is to obtain a reference voltage which is dependent on temperature and is applied for a temperature sensor. The current references and cascode structure are applied in PTAT current generator. In differential current generator, current mirror and reference current are used to obtain a temperature sensing current. Low power TCG is designed with 0.35-μm CMOS process. Simulation test shows that the proposed TCG is operated up to 120 μA with power dissipation of 2 mW. The sensing current shows to increase linearly with increase of temperature in the ranges of -30 ~ 80°C.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121949421","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473738
Jihen Loukil, Ferdaous Masmoudi, N. Derbel
In this paper, a suitable mathematical model of lead acid batteries has been presented. In order to imitate the real behavior of batteries and then to extract charge and discharge characteristics, the third order model has been proposed. An experimental test under real conditions has been set up. To identify internal parameters of battery cells, two methods have been suggested: (i) the identification using electrical characteristics established by the manufacturer datasheet, and (ii) the identification through a genetic algorithm. Recovered simulation results have been compared to those provided by the lead acid 12V/7Ah's datasheet and then have been validated by experimental works. Genetic algorithm becomes an useful tool for researchers to determine easily the parameters of battery models.
{"title":"Modeling of internal parameters of a lead acid battery with experimental validation","authors":"Jihen Loukil, Ferdaous Masmoudi, N. Derbel","doi":"10.1109/SSD.2016.7473738","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473738","url":null,"abstract":"In this paper, a suitable mathematical model of lead acid batteries has been presented. In order to imitate the real behavior of batteries and then to extract charge and discharge characteristics, the third order model has been proposed. An experimental test under real conditions has been set up. To identify internal parameters of battery cells, two methods have been suggested: (i) the identification using electrical characteristics established by the manufacturer datasheet, and (ii) the identification through a genetic algorithm. Recovered simulation results have been compared to those provided by the lead acid 12V/7Ah's datasheet and then have been validated by experimental works. Genetic algorithm becomes an useful tool for researchers to determine easily the parameters of battery models.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122125467","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473723
A. Zorig, M. Belkheiri, S. Barkat
Multilevel inverters topology is an effective way to improve the capacity of full power converter in distributed generation system. However, the major concern for multilevel inverters is the fluctuation in the neutral-point (NP) voltage. This paper focuses on overall control including NP voltage balancing of a photovoltaic (PV) distributed generation system based on dual-stage conversion of three level DC-DC boost converter (3LBC) and three-level T-type inverter (3LT2I). The voltage-balancing control of two split DC capacitors of the 3LT2I has been transferred to the 3LBC, and thereby there is no need to change the conventional three-level space vector modulation (SVPWM) algorithm or to add additional components. Furthermore, it is simple and easy to implement and only one proportional-integral (PI) is needed to achieve good NP voltage balancing. Last, the capability of the overall system to control the current injected into the grid, reactive power compensation and keep DC-link NP voltage balance is investigated at different operating conditions.
{"title":"Control of three-level T-type inverter based grid connected PV system","authors":"A. Zorig, M. Belkheiri, S. Barkat","doi":"10.1109/SSD.2016.7473723","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473723","url":null,"abstract":"Multilevel inverters topology is an effective way to improve the capacity of full power converter in distributed generation system. However, the major concern for multilevel inverters is the fluctuation in the neutral-point (NP) voltage. This paper focuses on overall control including NP voltage balancing of a photovoltaic (PV) distributed generation system based on dual-stage conversion of three level DC-DC boost converter (3LBC) and three-level T-type inverter (3LT2I). The voltage-balancing control of two split DC capacitors of the 3LT2I has been transferred to the 3LBC, and thereby there is no need to change the conventional three-level space vector modulation (SVPWM) algorithm or to add additional components. Furthermore, it is simple and easy to implement and only one proportional-integral (PI) is needed to achieve good NP voltage balancing. Last, the capability of the overall system to control the current injected into the grid, reactive power compensation and keep DC-link NP voltage balance is investigated at different operating conditions.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115352163","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473699
Zahra Jlassi, K. Ben-Kilani, M. Elleuch, C. Bouchoucha
This paper deals with the impact of primary reserves management on the performance of frequency control. A parametric study is presented, investigating various primary reserves management strategies, and their impact on the performance of the primary control. Emphasis is on major emergency system faults. Methodologically, many study cases are defined in terms of allocated reserves volume, committed generators characteristics and governor controls. The study is conducted on a simplified model of the Tunisian transmission network. Loss of generation contingencies are simulated for the defined primary reserves settings and the results are compared in terms of frequency deviation critical values, leading to eventual load shedding. The results are discussed and recommendations are made to improve the operational security of the system.
{"title":"Primary reserves managment in power systems","authors":"Zahra Jlassi, K. Ben-Kilani, M. Elleuch, C. Bouchoucha","doi":"10.1109/SSD.2016.7473699","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473699","url":null,"abstract":"This paper deals with the impact of primary reserves management on the performance of frequency control. A parametric study is presented, investigating various primary reserves management strategies, and their impact on the performance of the primary control. Emphasis is on major emergency system faults. Methodologically, many study cases are defined in terms of allocated reserves volume, committed generators characteristics and governor controls. The study is conducted on a simplified model of the Tunisian transmission network. Loss of generation contingencies are simulated for the defined primary reserves settings and the results are compared in terms of frequency deviation critical values, leading to eventual load shedding. The results are discussed and recommendations are made to improve the operational security of the system.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128940101","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473706
Sitank Bhatia, Hai Yang, Rui Zhang, Fabian Höflinger, L. Reindl
In today's world, where drones, remotely controlled vehicles, aircrafts and other autonomous vehicles have become a common mode of carrying out various operations, the Inertial Measurement Units (IMUs) find themselves playing a very prominent role in the field of navigation. IMUs use a combination of accelerometers, gyroscopes and magnetometers to determine the velocity, orientation and gravitational forces acting on the object, they're mounted upon. The sensor outputs of an IMU are not completely accurate and are coupled with errors. This paper focuses entirely on developing a new calibration method for an IMU. A theory was proposed which required the implementation of analytical operations using the basic sensor error model, eliminating the use of expensive hardware and inaccuracies from approximation methods involved. The IMU is moved by hand and placed in different static positions, and then with the help of analytical algorithms developed, the sensor errors were deduced. The performance of the calibration algorithm developed was tested and verified successfully with a commercially available device.
{"title":"Development of an analytical method for IMU calibration","authors":"Sitank Bhatia, Hai Yang, Rui Zhang, Fabian Höflinger, L. Reindl","doi":"10.1109/SSD.2016.7473706","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473706","url":null,"abstract":"In today's world, where drones, remotely controlled vehicles, aircrafts and other autonomous vehicles have become a common mode of carrying out various operations, the Inertial Measurement Units (IMUs) find themselves playing a very prominent role in the field of navigation. IMUs use a combination of accelerometers, gyroscopes and magnetometers to determine the velocity, orientation and gravitational forces acting on the object, they're mounted upon. The sensor outputs of an IMU are not completely accurate and are coupled with errors. This paper focuses entirely on developing a new calibration method for an IMU. A theory was proposed which required the implementation of analytical operations using the basic sensor error model, eliminating the use of expensive hardware and inaccuracies from approximation methods involved. The IMU is moved by hand and placed in different static positions, and then with the help of analytical algorithms developed, the sensor errors were deduced. The performance of the calibration algorithm developed was tested and verified successfully with a commercially available device.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125310328","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473779
Ahmed Abid, Rim Jallouli-Khlif, P. Melchior, N. Derbel
Input shaping command is applied in order to reduce the system vibration. Desired systems inputs are elaborated so that the system finishes the requested evolution without residual vibration and with optimal response time. This approach was developed by N.C. Singer and W.P. Seering first by involving only positive impulses such as ZV (zero vibration) and ZVD (zero vibration derivative) shapers, then by using positive and negative ones like Negative ZV shaper and UM (unity magnitude) shaper. The last technique was extended to fit explicit fractional derivative systems. In this paper, UM shaper parameters are calculated in real time, first on second order systems, then on explicit fractional derivative ones. Simulation results are given.
{"title":"Real time synthesis of UM shaper: Extension on explicit fractional derivative systems","authors":"Ahmed Abid, Rim Jallouli-Khlif, P. Melchior, N. Derbel","doi":"10.1109/SSD.2016.7473779","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473779","url":null,"abstract":"Input shaping command is applied in order to reduce the system vibration. Desired systems inputs are elaborated so that the system finishes the requested evolution without residual vibration and with optimal response time. This approach was developed by N.C. Singer and W.P. Seering first by involving only positive impulses such as ZV (zero vibration) and ZVD (zero vibration derivative) shapers, then by using positive and negative ones like Negative ZV shaper and UM (unity magnitude) shaper. The last technique was extended to fit explicit fractional derivative systems. In this paper, UM shaper parameters are calculated in real time, first on second order systems, then on explicit fractional derivative ones. Simulation results are given.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127628221","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 : 2016-03-21DOI: 10.1109/SSD.2016.7473719
S. Bdiri, F. Derbel
A design of a cascaded low-noise amplifier (LNA) for radio receivers is presented. The single LNA stage emphasises a total power gain of 18 dB and depleting current of 600 μ A at 1.2 V. The input and output return losses are S11 = -12.28 dB and S22 = -20.62 dB respectively at 868 MHz with a corresponding noise figure of 1.5 dB. This LNA exhibits input-referred third-order intercept point of -28.6 dBm. For a possible operation of 1 μs the LnA is able to settle in less than 400 ns. The LNA is fabricated using discrete elements targeting Wake-Up receiver radios.
{"title":"An 868 MHz sub-microsecond steady low-noise amplifier","authors":"S. Bdiri, F. Derbel","doi":"10.1109/SSD.2016.7473719","DOIUrl":"https://doi.org/10.1109/SSD.2016.7473719","url":null,"abstract":"A design of a cascaded low-noise amplifier (LNA) for radio receivers is presented. The single LNA stage emphasises a total power gain of 18 dB and depleting current of 600 μ A at 1.2 V. The input and output return losses are S11 = -12.28 dB and S22 = -20.62 dB respectively at 868 MHz with a corresponding noise figure of 1.5 dB. This LNA exhibits input-referred third-order intercept point of -28.6 dBm. For a possible operation of 1 μs the LnA is able to settle in less than 400 ns. The LNA is fabricated using discrete elements targeting Wake-Up receiver radios.","PeriodicalId":149580,"journal":{"name":"2016 13th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125833987","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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