Pub Date : 2003-06-09DOI: 10.1109/ISIE.2003.1267904
S. Fujisawa, K. Akazawa, R. Kurozumi, K. Kawada, T. Yamamoto, H. Uenaka
We developed a posture control system for an electric wheelchair equipped with active suspension, using CMAC, which is a neural network type of control. Testing of the posture control of the wheelchair, which considers a learning results as an output to the target value inputted on-line using the learning function of CMAC (cerebellar model arithmetic controller), was performed. In this paper, testing of the learning control, which holds the posture horizontally both by the simulation and in the experiment by the system, is performed, and the validity of CMAC is verified compared with conventional method.
{"title":"Posture control by on-line learning using CMAC for electric wheelchairs","authors":"S. Fujisawa, K. Akazawa, R. Kurozumi, K. Kawada, T. Yamamoto, H. Uenaka","doi":"10.1109/ISIE.2003.1267904","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267904","url":null,"abstract":"We developed a posture control system for an electric wheelchair equipped with active suspension, using CMAC, which is a neural network type of control. Testing of the posture control of the wheelchair, which considers a learning results as an output to the target value inputted on-line using the learning function of CMAC (cerebellar model arithmetic controller), was performed. In this paper, testing of the learning control, which holds the posture horizontally both by the simulation and in the experiment by the system, is performed, and the validity of CMAC is verified compared with conventional method.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131102640","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267950
R. Morais, A. Valente, J. Correia, C. Couto
This paper describes a CMOS mixed-signal interface with a RF transmitter. This die is assembled in a multi-chip-module (MCM) micro-system together with the micromachined soil moisture sensor to achieve a cost-effective solution with accurate and reliable measurements for soil moisture in agriculture. The soil moisture probe, based on dual-probe heat-pulse (DPHP) method, is fabricated in bulk-micromachining technology. The DPHP method is based on the measurement of the maximum temperature rise at some distance from the heater, after applying a heat-pulse. The measurement of the temperature rise is obtained by subtracting soil temperature from the probe temperature. The mixed-signal interface Ls based on a pre-amplification stage and first-order sigma-delta modulator. The bit-stream output of the modulator is then applied to a counter as a first order decimation filter thus providing a 12-bit readout sample. Prior to transmission, data is encoded as a pulse width modulated (PWM) signal and then transmitted by means of an amplitude shift-keying (ASK) modulation. The transmitter features a VCO phase locked to the quartz crystal reference of 13.56 MHz to achieve a carrier frequency of 433.92 MHz. A RF power amplifier based on class E topology was chosen. The CMOS mixed-signal interface with a RF transmitter has been implemented in a single-chip using a standard CMOS process (AMI 0.7 /spl mu/m, n-well, 2 metals and 1 poly).
{"title":"A CMOS mixed-signal interface with a RF transmitter for a micromachined soil moisture sensor","authors":"R. Morais, A. Valente, J. Correia, C. Couto","doi":"10.1109/ISIE.2003.1267950","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267950","url":null,"abstract":"This paper describes a CMOS mixed-signal interface with a RF transmitter. This die is assembled in a multi-chip-module (MCM) micro-system together with the micromachined soil moisture sensor to achieve a cost-effective solution with accurate and reliable measurements for soil moisture in agriculture. The soil moisture probe, based on dual-probe heat-pulse (DPHP) method, is fabricated in bulk-micromachining technology. The DPHP method is based on the measurement of the maximum temperature rise at some distance from the heater, after applying a heat-pulse. The measurement of the temperature rise is obtained by subtracting soil temperature from the probe temperature. The mixed-signal interface Ls based on a pre-amplification stage and first-order sigma-delta modulator. The bit-stream output of the modulator is then applied to a counter as a first order decimation filter thus providing a 12-bit readout sample. Prior to transmission, data is encoded as a pulse width modulated (PWM) signal and then transmitted by means of an amplitude shift-keying (ASK) modulation. The transmitter features a VCO phase locked to the quartz crystal reference of 13.56 MHz to achieve a carrier frequency of 433.92 MHz. A RF power amplifier based on class E topology was chosen. The CMOS mixed-signal interface with a RF transmitter has been implemented in a single-chip using a standard CMOS process (AMI 0.7 /spl mu/m, n-well, 2 metals and 1 poly).","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133422894","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267308
C. Stein, H.A. Grundlong, H. Pinheiro, J. R. Pinheiro, H. Hey
This paper presents a comparative analysis of a set of soft-transition techniques applied in inverters utilizing IGBT as power switches. The techniques are compared based in losses, number of components, stresses and type of commutation obtained. An estimation of power losses and junction temperature of insulated gate bipolar transistor (IGBT) devices is used to compare the soft-transition techniques. The method used to estimate the losses and temperatures is based in the data obtained from the devices data sheets and in the governing equation of the auxiliary circuits. This method uses a program written in MATLAB, which make use of an iterative process to obtain the convergence of the values of losses and temperature. Experimental results of the soft-transition techniques are presented, as well as a discussion about their characteristics.
{"title":"Analysis and comparison of soft-transition inverters","authors":"C. Stein, H.A. Grundlong, H. Pinheiro, J. R. Pinheiro, H. Hey","doi":"10.1109/ISIE.2003.1267308","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267308","url":null,"abstract":"This paper presents a comparative analysis of a set of soft-transition techniques applied in inverters utilizing IGBT as power switches. The techniques are compared based in losses, number of components, stresses and type of commutation obtained. An estimation of power losses and junction temperature of insulated gate bipolar transistor (IGBT) devices is used to compare the soft-transition techniques. The method used to estimate the losses and temperatures is based in the data obtained from the devices data sheets and in the governing equation of the auxiliary circuits. This method uses a program written in MATLAB, which make use of an iterative process to obtain the convergence of the values of losses and temperature. Experimental results of the soft-transition techniques are presented, as well as a discussion about their characteristics.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"16 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134428018","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267299
F. T. Wakabayashi, C. Canesin
This paper presents a new static model for tubular fluorescent lamps (T12 bulb) operated at high frequencies. The main goal of this paper is to investigate the effects of ambient temperature and nominal switching frequency of operation in the static characteristics of tubular fluorescent lamps. The methodology for obtaining the model is based on several two-dimensional mathematical regressions, used to provide the behavior of the fluorescent lamp according to different independent variables, namely: power processed through the lamp and ambient temperature. In addition, the proposed model can be easily converted to a lamp equivalent resistance model, which can be useful for ballast designers. Finally, the curves obtained using the new model are compared to the correspondent experimental data, in order to verify the accuracy of the proposed methodology.
{"title":"A new model for tubular fluorescent lamps operated at high frequencies for dimmable applications","authors":"F. T. Wakabayashi, C. Canesin","doi":"10.1109/ISIE.2003.1267299","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267299","url":null,"abstract":"This paper presents a new static model for tubular fluorescent lamps (T12 bulb) operated at high frequencies. The main goal of this paper is to investigate the effects of ambient temperature and nominal switching frequency of operation in the static characteristics of tubular fluorescent lamps. The methodology for obtaining the model is based on several two-dimensional mathematical regressions, used to provide the behavior of the fluorescent lamp according to different independent variables, namely: power processed through the lamp and ambient temperature. In addition, the proposed model can be easily converted to a lamp equivalent resistance model, which can be useful for ballast designers. Finally, the curves obtained using the new model are compared to the correspondent experimental data, in order to verify the accuracy of the proposed methodology.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115568385","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267329
K. D. Coelho, I. Barbi
A new four-switch converter topology is presented. This topology is intended for use in high input voltages and low power applications, especially auxiliary supplies. It's mainly advantage is the clamping voltage on the switches: half of the input voltage. It works like the flyback converter, with one direction power flow. The four switches can be set on with the same pulse, with a small delay time in the off signal of the internal switches after the external ones. The reliability of the converter is increased with the series position of the switches with load. This reliability combined with simplicity of the way it is commanded, makes this converter very well suited for small power applications. This paper presents the principle of operation of the proposed converter. Each stage with the main characteristics, and the main equations are also presented. Experimental data prove the suitability of the proposed converter.
{"title":"A three level double-ended flyback converter","authors":"K. D. Coelho, I. Barbi","doi":"10.1109/ISIE.2003.1267329","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267329","url":null,"abstract":"A new four-switch converter topology is presented. This topology is intended for use in high input voltages and low power applications, especially auxiliary supplies. It's mainly advantage is the clamping voltage on the switches: half of the input voltage. It works like the flyback converter, with one direction power flow. The four switches can be set on with the same pulse, with a small delay time in the off signal of the internal switches after the external ones. The reliability of the converter is increased with the series position of the switches with load. This reliability combined with simplicity of the way it is commanded, makes this converter very well suited for small power applications. This paper presents the principle of operation of the proposed converter. Each stage with the main characteristics, and the main equations are also presented. Experimental data prove the suitability of the proposed converter.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115695040","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267312
A. Świerniak, A. Czornik, K. Simek
The piecewise deterministic linear systems represent an interesting class of systems which can describe a large variety of processes. One of the most important area is in design of fault prone systems (see e.g. [A. Swierniak et al., 1998], [D.D. Siljak, 1980], [D.D. Sworder], where real world practical systems are discussed). In this paper. we consider the continuous time linear systems with abrupt changes of parameters modelled by discrete-state Markov processes. The changes may result from faults of actuators or sensors in the system and are localized by diagnostic equipment. Under the assumption of the existence of a suitable control law, we give the necessary and sufficient conditions for the stochastic stabilizability of the nominal model of this class of systems and optimality of the control law. Moreover assuming that the parameters of the real system may differ from their nominal values we present sufficient conditions of the robustness for the real systems.
{"title":"Robust stabilization and optimization of fault tolerant linear systems","authors":"A. Świerniak, A. Czornik, K. Simek","doi":"10.1109/ISIE.2003.1267312","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267312","url":null,"abstract":"The piecewise deterministic linear systems represent an interesting class of systems which can describe a large variety of processes. One of the most important area is in design of fault prone systems (see e.g. [A. Swierniak et al., 1998], [D.D. Siljak, 1980], [D.D. Sworder], where real world practical systems are discussed). In this paper. we consider the continuous time linear systems with abrupt changes of parameters modelled by discrete-state Markov processes. The changes may result from faults of actuators or sensors in the system and are localized by diagnostic equipment. Under the assumption of the existence of a suitable control law, we give the necessary and sufficient conditions for the stochastic stabilizability of the nominal model of this class of systems and optimality of the control law. Moreover assuming that the parameters of the real system may differ from their nominal values we present sufficient conditions of the robustness for the real systems.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114289761","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267322
J. B. Cunha
The number of applications using machine vision and digital image processing techniques in the agricultural sector is increasing rapidly. These applications include land/aerial remote sensing of crops, detection and recognition of pathological stress conditions, shape and color characterization of fruits, among many other topics. In fact, quantification of the visual properties of horticultural products and plants can play an important role to improve and automate agricultural management tasks. In this paper, is described a plant leaf characterization system based on a personal computer. This system uses a digital scanner to acquire leaf images with a resolution of 150 dpi. These images are afterwards processed in order to compute some leaf characteristic parameters, such as: leaf area and perimeter, existence of holes, width and length. With the implemented algorithms the errors between the measurements and the real values were typically less than /spl mnplus/3% and /spl mnplus/2.5% for the area and linear measurements, respectively. These tests and results were realized using sets of known size images and leaf images that were measured with the proposed system and with a commercial calibrated leaf area system LiCor from Delta-T devices.
{"title":"Application of image processing techniques in the characterization of plant leafs","authors":"J. B. Cunha","doi":"10.1109/ISIE.2003.1267322","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267322","url":null,"abstract":"The number of applications using machine vision and digital image processing techniques in the agricultural sector is increasing rapidly. These applications include land/aerial remote sensing of crops, detection and recognition of pathological stress conditions, shape and color characterization of fruits, among many other topics. In fact, quantification of the visual properties of horticultural products and plants can play an important role to improve and automate agricultural management tasks. In this paper, is described a plant leaf characterization system based on a personal computer. This system uses a digital scanner to acquire leaf images with a resolution of 150 dpi. These images are afterwards processed in order to compute some leaf characteristic parameters, such as: leaf area and perimeter, existence of holes, width and length. With the implemented algorithms the errors between the measurements and the real values were typically less than /spl mnplus/3% and /spl mnplus/2.5% for the area and linear measurements, respectively. These tests and results were realized using sets of known size images and leaf images that were measured with the proposed system and with a commercial calibrated leaf area system LiCor from Delta-T devices.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114822802","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267296
H. Rodrigues, T. Gáspár, J. Metrôlho, E. Lopes
This paper describes the fist stage of a prototype that is being developed using a personal digital assistant (PDA) device in surveillance tasks as part of a monitoring system. The work is being developed and tested using the features of these more and more diffused devices. In the system design, an interface board was used with an embedded controller area network (CAN) to act as a link between the PDA device and the neighbour environment. This application intends to be used in the monitoring and control of environmental factors. The system's architecture and some already developed software blocks are presented in the following paper sections.
{"title":"PDA as surveillance device in monitoring system","authors":"H. Rodrigues, T. Gáspár, J. Metrôlho, E. Lopes","doi":"10.1109/ISIE.2003.1267296","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267296","url":null,"abstract":"This paper describes the fist stage of a prototype that is being developed using a personal digital assistant (PDA) device in surveillance tasks as part of a monitoring system. The work is being developed and tested using the features of these more and more diffused devices. In the system design, an interface board was used with an embedded controller area network (CAN) to act as a link between the PDA device and the neighbour environment. This application intends to be used in the monitoring and control of environmental factors. The system's architecture and some already developed software blocks are presented in the following paper sections.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387707","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267915
C. Sánchez, F. Ibáñez, F. Gonzalez
To increase power density in power converters we can increase the switching frequency as this enables the use of smaller capacitors and inductors. However, this technique has the disadvantage of increasing power loss in the switches. We can solve this problem by using a quasi-resonant circuit in the inverter DC link (RDCL). This circuit reduces its output voltage when the inverter switches switch. This is therefore performed at zero voltage and the switching power losses are zero. RDCL is used before a DC/AC converter, and so its behaviour must be characterised for reference in the control design. This characterisation is also used for adopting the RDCL output impedance and the inverter input in order to improve the system dynamic response. In this work, we present the results of the behavioural analysis of a resonant DC-link structure. It is based on the structure described in [S.Y.R. Hui et el., January 1996]. The resonance frequency was increased to 1.5 MHz and this enabled the use of RDCL in combination with inverters switching at 200 kHz. As a result the magnetic component requirement was strict. Different simulations were made and a 1 kW prototype was built to monitor the behaviour under different conditions.
{"title":"Analysis of a voltage clamp quasi-resonant DC-link used in high frequency DC-AC converters","authors":"C. Sánchez, F. Ibáñez, F. Gonzalez","doi":"10.1109/ISIE.2003.1267915","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267915","url":null,"abstract":"To increase power density in power converters we can increase the switching frequency as this enables the use of smaller capacitors and inductors. However, this technique has the disadvantage of increasing power loss in the switches. We can solve this problem by using a quasi-resonant circuit in the inverter DC link (RDCL). This circuit reduces its output voltage when the inverter switches switch. This is therefore performed at zero voltage and the switching power losses are zero. RDCL is used before a DC/AC converter, and so its behaviour must be characterised for reference in the control design. This characterisation is also used for adopting the RDCL output impedance and the inverter input in order to improve the system dynamic response. In this work, we present the results of the behavioural analysis of a resonant DC-link structure. It is based on the structure described in [S.Y.R. Hui et el., January 1996]. The resonance frequency was increased to 1.5 MHz and this enabled the use of RDCL in combination with inverters switching at 200 kHz. As a result the magnetic component requirement was strict. Different simulations were made and a 1 kW prototype was built to monitor the behaviour under different conditions.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123367766","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 : 2003-06-09DOI: 10.1109/ISIE.2003.1267247
J. L. Domingos, D. Andrade, M. Freitas, H. de Paula
This work presents a drive strategy for a linear motion switched reluctance motor that attempts to speed control with four-quadrant operation. The magnetization curves and phase inductance profiles are obtained experimentally. These are mathematically represented using Fourier series approach. A mathematical model to represent the machine dynamics is then developed and presented. A drive structure is proposed that covers the converter, the speed and current controllers, and the phase switching mode. Computational simulations are achieved by use of the mathematic model and the control strategy and include motions in both directions, comprising the start, speed control, and braking until total stop of the machine. From the results, the proposed drive strategy indicates a desirable operational versatility.
{"title":"Four-quadrant operation drive strategy for a linear switched reluctance motor","authors":"J. L. Domingos, D. Andrade, M. Freitas, H. de Paula","doi":"10.1109/ISIE.2003.1267247","DOIUrl":"https://doi.org/10.1109/ISIE.2003.1267247","url":null,"abstract":"This work presents a drive strategy for a linear motion switched reluctance motor that attempts to speed control with four-quadrant operation. The magnetization curves and phase inductance profiles are obtained experimentally. These are mathematically represented using Fourier series approach. A mathematical model to represent the machine dynamics is then developed and presented. A drive structure is proposed that covers the converter, the speed and current controllers, and the phase switching mode. Computational simulations are achieved by use of the mathematic model and the control strategy and include motions in both directions, comprising the start, speed control, and braking until total stop of the machine. From the results, the proposed drive strategy indicates a desirable operational versatility.","PeriodicalId":166431,"journal":{"name":"2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123928016","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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