Pub Date : 2014-12-05DOI: 10.1109/MECHATRONIKA.2014.7018288
Ali Hassan, A. Torres-Perez, S. Kaczmarczyk, P. Picton
This paper discusses the performance of two active damping control strategies in mitigating the vibration of a synchronous Free-Piston Stirling Engine/Linear Alternator over a wider bandwidth [47-53] Hz to amplitudes below 20μm. A simplified vibration model of the Stirling engine generator is justified on the basis that the response of the proposed model is verified to match well that of the real one. Two active control techniques are discussed and analyzed in the time and frequency domains. The first control strategy is based on a Feed-forward zero-placement control whereas the second one is linear quadratic (LQ) optimal control and state observer.
{"title":"Active vibration control strategies for a Free Piston Stirling Engine generator","authors":"Ali Hassan, A. Torres-Perez, S. Kaczmarczyk, P. Picton","doi":"10.1109/MECHATRONIKA.2014.7018288","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018288","url":null,"abstract":"This paper discusses the performance of two active damping control strategies in mitigating the vibration of a synchronous Free-Piston Stirling Engine/Linear Alternator over a wider bandwidth [47-53] Hz to amplitudes below 20μm. A simplified vibration model of the Stirling engine generator is justified on the basis that the response of the proposed model is verified to match well that of the real one. Two active control techniques are discussed and analyzed in the time and frequency domains. The first control strategy is based on a Feed-forward zero-placement control whereas the second one is linear quadratic (LQ) optimal control and state observer.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121552782","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018342
Vejlupek Josef
This paper presents a method which would enable the car with coupled trailer to backup safely, preventing i.e. from jack-knifing and provide the driver assistance with steering the trailer in a desired direction. Presented method is based on developing new algorithms for the current parking assistant electronic control units (ECUs) using the ultrasonic sensors. Key idea is to estimate the length of the trailer shaft (axle to coupling length), and the angle between the car and trailer. With those the control for the steering of the car to backup the trailer in the desired direction can be designed.
{"title":"Trailer parking assistant","authors":"Vejlupek Josef","doi":"10.1109/MECHATRONIKA.2014.7018342","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018342","url":null,"abstract":"This paper presents a method which would enable the car with coupled trailer to backup safely, preventing i.e. from jack-knifing and provide the driver assistance with steering the trailer in a desired direction. Presented method is based on developing new algorithms for the current parking assistant electronic control units (ECUs) using the ultrasonic sensors. Key idea is to estimate the length of the trailer shaft (axle to coupling length), and the angle between the car and trailer. With those the control for the steering of the car to backup the trailer in the desired direction can be designed.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402929","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018347
G. A. Ismeal, Karol Kyslan, V. Fedák
The paper describes system identification by using Artificial Neural Networks that is applied to a permanent magnet DC motor. To identify its dynamic behavior an experimental setup has been developed that enables to measure data of the system input (armature voltage) and output (current and rotor speed). Generally, the identification methods can be classified as parametric and non-parametric. We use a non-parametric method (black box). A recurrent neural network was used and the Nonlinear AutoRegressive network with eXogenous inputs network (NARX) has been selected. Parallel architectures have been used in training the NARX network. The scaled conjugate gradient training algorithm, using the first and second derivatives of error to train the network to minimize the error function, has been selected. The network architecture which has been used to create the dynamic model of the motor consists of three hidden layers, a single input neuron, and two output neurons. The modeled and measured normalized data were compared with good conformity.
{"title":"DC motor identification based on Recurrent Neural Networks","authors":"G. A. Ismeal, Karol Kyslan, V. Fedák","doi":"10.1109/MECHATRONIKA.2014.7018347","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018347","url":null,"abstract":"The paper describes system identification by using Artificial Neural Networks that is applied to a permanent magnet DC motor. To identify its dynamic behavior an experimental setup has been developed that enables to measure data of the system input (armature voltage) and output (current and rotor speed). Generally, the identification methods can be classified as parametric and non-parametric. We use a non-parametric method (black box). A recurrent neural network was used and the Nonlinear AutoRegressive network with eXogenous inputs network (NARX) has been selected. Parallel architectures have been used in training the NARX network. The scaled conjugate gradient training algorithm, using the first and second derivatives of error to train the network to minimize the error function, has been selected. The network architecture which has been used to create the dynamic model of the motor consists of three hidden layers, a single input neuron, and two output neurons. The modeled and measured normalized data were compared with good conformity.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127501685","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018305
Min Zhao, X. Tian, Ruoyun Zhang, Lin Wu
In this paper, a new type of tension sensor is designed according to the needs of measuring the tension of varieties of ropes such as ropes in parachute. The sensor is designed to have a T-shape structure, so that the rope can cross over the sensor without any damage during measurement. In the process of measuring parachute haulage cable, it requires strict requests on the shape and structure of the sensor. The shape and structure of the sensor may have impacts on the measurement or even disabled measurement. So a wireless passive operating mode of measurement is proposed. Surface acoustic wave which is a wireless passive object is used at sensor surface functioning as both sensor element and signal transmission medium. The change of tension in a rope is converted into the change of stress in such sensor, leading to the change of resonant frequency of the surface acoustic wave device, which can be detected by the reader. Simulation results show that the sensor has better sensitivity and linearity.
{"title":"A wireless passive tension sensor","authors":"Min Zhao, X. Tian, Ruoyun Zhang, Lin Wu","doi":"10.1109/MECHATRONIKA.2014.7018305","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018305","url":null,"abstract":"In this paper, a new type of tension sensor is designed according to the needs of measuring the tension of varieties of ropes such as ropes in parachute. The sensor is designed to have a T-shape structure, so that the rope can cross over the sensor without any damage during measurement. In the process of measuring parachute haulage cable, it requires strict requests on the shape and structure of the sensor. The shape and structure of the sensor may have impacts on the measurement or even disabled measurement. So a wireless passive operating mode of measurement is proposed. Surface acoustic wave which is a wireless passive object is used at sensor surface functioning as both sensor element and signal transmission medium. The change of tension in a rope is converted into the change of stress in such sensor, leading to the change of resonant frequency of the surface acoustic wave device, which can be detected by the reader. Simulation results show that the sensor has better sensitivity and linearity.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116726976","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018321
I. Pazdera, P. Procházka, D. Cervinka, R. Cipín, J. Knobloch, J. Kadlec
The paper deals with innovative design of drive of tattoo needle. Most of currently used solutions are realized with rotational motor and crank mechanism or with application based on “Wagner hammer” principle. Rotational drive is limited to slightly adjust velocity profile of the needle during one operating cycle and also the complex construction didn't allow easy disinfection processes. System based on “Wagner hammer” is widely used but its most significant disadvantage is instability of its mechanical parameters which leads to frequent adjusting of the system. The innovated solution is based on electromechanical actuator with enforced (controlled) dynamics, which eliminate all mentioned disadvantages of mechanical solutions. The paper describes design of electric drivers of electromagnetic actuators and the control principles are explained too. Some practical experience gained during realization of the prototype together with measured results are discussed.
{"title":"Actuator for tattoo machine","authors":"I. Pazdera, P. Procházka, D. Cervinka, R. Cipín, J. Knobloch, J. Kadlec","doi":"10.1109/MECHATRONIKA.2014.7018321","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018321","url":null,"abstract":"The paper deals with innovative design of drive of tattoo needle. Most of currently used solutions are realized with rotational motor and crank mechanism or with application based on “Wagner hammer” principle. Rotational drive is limited to slightly adjust velocity profile of the needle during one operating cycle and also the complex construction didn't allow easy disinfection processes. System based on “Wagner hammer” is widely used but its most significant disadvantage is instability of its mechanical parameters which leads to frequent adjusting of the system. The innovated solution is based on electromechanical actuator with enforced (controlled) dynamics, which eliminate all mentioned disadvantages of mechanical solutions. The paper describes design of electric drivers of electromagnetic actuators and the control principles are explained too. Some practical experience gained during realization of the prototype together with measured results are discussed.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129675317","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018297
J. Bergstrom, T. Dong
Escherichia coli or E. coli is the dominant pathogen in Urinary Tract Infections (UTIs) in more than 80 % of the cases. Laboratory urine culture is the standard detection method which is expensive and time consuming. This paper studies the possibility of using a capacitive sensor to diagnose UTIs. Experimental tests were carried out to investigate the touch sensor's response to artificially prepared E.coli sample. The capacitive touch sensor gave a consistent result that could be used to design a portable diagnostic device for early detection of UTIs. An exponential response was observed to increasing volume (up to 100 microliter) and E.coli presence in the sample. When the volume reached 100 microliter, the capacitance in average RAW Count Difference value became constant. Urine sample mixed with liquid E. coli gave the highest capacitance change (in average RAW Count Difference value) and the sensitivity at 100 microliter was found to be 22 counts per picofarad (pF).
{"title":"An Experimental Study on capacitive touch sensor's response to E. coli bacteria","authors":"J. Bergstrom, T. Dong","doi":"10.1109/MECHATRONIKA.2014.7018297","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018297","url":null,"abstract":"Escherichia coli or E. coli is the dominant pathogen in Urinary Tract Infections (UTIs) in more than 80 % of the cases. Laboratory urine culture is the standard detection method which is expensive and time consuming. This paper studies the possibility of using a capacitive sensor to diagnose UTIs. Experimental tests were carried out to investigate the touch sensor's response to artificially prepared E.coli sample. The capacitive touch sensor gave a consistent result that could be used to design a portable diagnostic device for early detection of UTIs. An exponential response was observed to increasing volume (up to 100 microliter) and E.coli presence in the sample. When the volume reached 100 microliter, the capacitance in average RAW Count Difference value became constant. Urine sample mixed with liquid E. coli gave the highest capacitance change (in average RAW Count Difference value) and the sensitivity at 100 microliter was found to be 22 counts per picofarad (pF).","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128920678","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018245
M. Pronin, A. G. Voronsov, T. Nahdi, I. Pimenova
A breadboard model of the store of kinetic energy with an asynchronized electric machine and a cascade frequency converter in a rotor circuit is created. The converter is executed on the basis of a single-phase blocks connected to the network through transformers and connected from the rotor consistently in each phase. Transformation blocks contain single-phase active rectifiers and voltage inverters. They provide a bilateral exchange of energy between the network and the rotor. A control algorithm is developed and experimentally checked up by the single-phase active rectifiers, allowing to minimize an exchange of signals between blocks.
{"title":"Single-phase active rectifiers in a cascade frequency converter","authors":"M. Pronin, A. G. Voronsov, T. Nahdi, I. Pimenova","doi":"10.1109/MECHATRONIKA.2014.7018245","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018245","url":null,"abstract":"A breadboard model of the store of kinetic energy with an asynchronized electric machine and a cascade frequency converter in a rotor circuit is created. The converter is executed on the basis of a single-phase blocks connected to the network through transformers and connected from the rotor consistently in each phase. Transformation blocks contain single-phase active rectifiers and voltage inverters. They provide a bilateral exchange of energy between the network and the rotor. A control algorithm is developed and experimentally checked up by the single-phase active rectifiers, allowing to minimize an exchange of signals between blocks.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121183701","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018350
V. Ondroušek, J. Kolomazník, Marcel Vytečka
The issue of detecting machine parts on the conveyor belt is solved in this contribution. The graph matching algorithm that calculates the smallest distance between two graphs was selected to solve the given problem. Especially finding the best combination of selecting feature points from the image, creating graph structure from these points and looking for optimal parameters of the graph matching algorithm, is under discussion in this article. Accuracy of the object recognition together with the time consumption of the used methods is considered.
{"title":"Recognition of the objects on the conveyor belt using graph matching algorithms","authors":"V. Ondroušek, J. Kolomazník, Marcel Vytečka","doi":"10.1109/MECHATRONIKA.2014.7018350","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018350","url":null,"abstract":"The issue of detecting machine parts on the conveyor belt is solved in this contribution. The graph matching algorithm that calculates the smallest distance between two graphs was selected to solve the given problem. Especially finding the best combination of selecting feature points from the image, creating graph structure from these points and looking for optimal parameters of the graph matching algorithm, is under discussion in this article. Accuracy of the object recognition together with the time consumption of the used methods is considered.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":" 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113949537","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018329
R. Běloušek, M. Patočka
Identification of the induction machine substituting circuit parameters is very difficult despite the fact that induction machines are the simplest of all. This is caused by the fact that electrical quantities cannot be measured in the rotor cage. In addition there is proved in the literature, that classical Γ-network includes too much freedom degrees (i.e. 4), therefore it cannot be identified unequivocally. On the other hand, the G-network includes only 3 freedom degrees, and, based on this fact, it is identifiable absolutely unequivocally. Therefore there are derived equations for the exact mutual transformation of the parameters of individual substituting circuits (T-, Γ-, and inverse Ψ-network).
{"title":"Analysis of the induction machine substituting circuit","authors":"R. Běloušek, M. Patočka","doi":"10.1109/MECHATRONIKA.2014.7018329","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018329","url":null,"abstract":"Identification of the induction machine substituting circuit parameters is very difficult despite the fact that induction machines are the simplest of all. This is caused by the fact that electrical quantities cannot be measured in the rotor cage. In addition there is proved in the literature, that classical Γ-network includes too much freedom degrees (i.e. 4), therefore it cannot be identified unequivocally. On the other hand, the G-network includes only 3 freedom degrees, and, based on this fact, it is identifiable absolutely unequivocally. Therefore there are derived equations for the exact mutual transformation of the parameters of individual substituting circuits (T-, Γ-, and inverse Ψ-network).","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124135087","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 : 2014-12-01DOI: 10.1109/MECHATRONIKA.2014.7018328
J. Madarás, V. Ferencey, M. Bugár
The work includes the proposal of a mechatronic system of the variable intake valve lift control for an internal combustion engine. Part of the work handles with the current state of valves control for internal combustion engines with variable valve lift. It is derived mathematical and physical analysis of the air intake manifold system and its dynamics, focusing on the dynamics of cylinder charge exchange in condition during continue change of valve lift curves. The main part of this work is the creation of kinematic-dynamic model of variable valve lift and its implementation into the control system for internal combustion engine. End of this work contains case study and simulation results of the mechatronic system of variable valve lift control.
{"title":"Mechatronic system of variable valve lift control for internal combustion engine","authors":"J. Madarás, V. Ferencey, M. Bugár","doi":"10.1109/MECHATRONIKA.2014.7018328","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018328","url":null,"abstract":"The work includes the proposal of a mechatronic system of the variable intake valve lift control for an internal combustion engine. Part of the work handles with the current state of valves control for internal combustion engines with variable valve lift. It is derived mathematical and physical analysis of the air intake manifold system and its dynamics, focusing on the dynamics of cylinder charge exchange in condition during continue change of valve lift curves. The main part of this work is the creation of kinematic-dynamic model of variable valve lift and its implementation into the control system for internal combustion engine. End of this work contains case study and simulation results of the mechatronic system of variable valve lift control.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134116902","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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