EPE Association: EPE-PEMC 2004 - Topic 04-4: Sensorless techniques

EPE-PEMC 2004 - Topic 04-4: Sensorless techniques
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 04: MEASUREMENTS AND SENSORS > EPE-PEMC 2004 - Topic 04-4: Sensorless techniques

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   ANN-Based Speed Estimator For Induction Motor Drive
By Martin Kuchar, Pavel Brandstetter, Martin Kaduch [View]
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Abstract: The design, simulation and DSP implementation of AI-based speed estimator for applications in sensorless ac electrical drives are described in the paper. Speed sensors are mostly used to obtain rotor speed or position information in the field of ac electrical drives. These sensors are sources of trouble, and there exists some applications in industry, where they cannot be used. The mentioned reasons lead to the development of sensorless control techniques. In this paper ANN-based rotor speed estimator is considered, which is based on a feedforward artificial neural network. It is shown that the estimator, in contrast to conventional model-based methods, does not depend on knowledge of the motor under consideration. It is further shown that accurate estimates can be obtained in situations of varying load without the need for explicit load monitoring. The estimator was implemented into DSP TMS 320C40, which controls a drive with a 2.7 kW induction motor.

   Digital Sensorless Control Of An Exterior Permanet Magnet Synchronous Motor
By Sergey Ryvkin, Dmitry Izosimov, Denis Aksarin, M. Cernat [View]
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Abstract: The work is intended to explain the basic ideas related to design of digital control system for sensorless electric synchronous drive controlled by digital control system. The control system design is made in the time domain and based on modal discrete-time control and observation of unmeasured mechanical variable. Original observation algorithms of both position and rotational velocity for exterior permanent magnet synchronous motors are designed. The system simulation has confirmed high dynamic accuracy and in addition simplification of algorithm of digital control, reduction of the requirements to computing capacity of the controller.

   Sensorless Control Of DC Motors Based On Extended Observers
By Li Su, Hai-Jiao Guo, Tadaaki Watanabe, Osamu Ichinokura [View]
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Abstract: This paper proposes a new speed control method using extended observer considering the effect of load torque. The observer can estimate both speed and load torque, so the effect of load torque on speed will be included and the accuracy of estimated speed can be improved. In addition, using the estimated load torque into feedforward loop, it can improve the transient response and the robustness about the load fluctuation.

EPE-PEMC 2004 - Topic 04-4: Sensorless techniques
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 04: MEASUREMENTS AND SENSORS > EPE-PEMC 2004 - Topic 04-4: Sensorless techniques
	[return to parent folder]

	ANN-Based Speed Estimator For Induction Motor Drive By Martin Kuchar, Pavel Brandstetter, Martin Kaduch	[View] [Download]
Abstract: The design, simulation and DSP implementation of AI-based speed estimator for applications in sensorless ac electrical drives are described in the paper. Speed sensors are mostly used to obtain rotor speed or position information in the field of ac electrical drives. These sensors are sources of trouble, and there exists some applications in industry, where they cannot be used. The mentioned reasons lead to the development of sensorless control techniques. In this paper ANN-based rotor speed estimator is considered, which is based on a feedforward artificial neural network. It is shown that the estimator, in contrast to conventional model-based methods, does not depend on knowledge of the motor under consideration. It is further shown that accurate estimates can be obtained in situations of varying load without the need for explicit load monitoring. The estimator was implemented into DSP TMS 320C40, which controls a drive with a 2.7 kW induction motor.

	Digital Sensorless Control Of An Exterior Permanet Magnet Synchronous Motor By Sergey Ryvkin, Dmitry Izosimov, Denis Aksarin, M. Cernat	[View] [Download]
Abstract: The work is intended to explain the basic ideas related to design of digital control system for sensorless electric synchronous drive controlled by digital control system. The control system design is made in the time domain and based on modal discrete-time control and observation of unmeasured mechanical variable. Original observation algorithms of both position and rotational velocity for exterior permanent magnet synchronous motors are designed. The system simulation has confirmed high dynamic accuracy and in addition simplification of algorithm of digital control, reduction of the requirements to computing capacity of the controller.

	Sensorless Control Of DC Motors Based On Extended Observers By Li Su, Hai-Jiao Guo, Tadaaki Watanabe, Osamu Ichinokura	[View] [Download]
Abstract: This paper proposes a new speed control method using extended observer considering the effect of load torque. The observer can estimate both speed and load torque, so the effect of load torque on speed will be included and the accuracy of estimated speed can be improved. In addition, using the estimated load torque into feedforward loop, it can improve the transient response and the robustness about the load fluctuation.