A speed and mechanical torque observer based on WLSVR

Authors:
Zhang Gui-Xiang;Chen Hong-Wei
Affiliations:
College of Mechanical and Automobile Engineering, Hunan University, Changsha, Hunan, China;College of Mechanical and Automobile Engineering, Hunan University, Changsha, Hunan, China
Venue:
ACACOS'08 Proceedings of the 7th WSEAS International Conference on Applied Computer and Applied Computational Science
Year:
2008

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Abstract

In this paper, a speed and mechanical torque observer is proposed in this paper. By using wavelet least squared support vector regressions (WLSVR) to model nonlinear relationship between the variables of the motor, the observer calculates the speed and mechanical torque on the basis of the voltage, the current and the frequency of the stator of the AC Asynchronous Electrical Dynamometer. Experiments have proved effectiveness of the proposed observer. The proposed method has paved a new way for the measurement of the speed and mechanical torque of the AC Asynchronous Electrical Dynamometer in the power- testing system. It is a useful way to simplify the structure of the currently used measurement system.