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이 논문의 연구 히스토리 (8)

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An adaptive nonlinear control of an interior permanent magnet (IPM) synchronous motor with maximum torque control is proposed. In the conventional servo drive system, the controller is designed under the assumption that the electrical dynamics are neglected by the field oriented control and current control. This yields an acceptable performance for low performance drive applications due to the large time scale separation between the electrical and mechanical dynamics. However, for the high performance applications, the conventional controller often fails to perform satisfactorily. To overcome this problem, an input-output linearization technique will be applied to the speed tracking control of the IPM synchronous motor. Using this control scheme, the nonlinear model can be effectively linearized, and the speed error dynamics can be specified using the linear-based model. This control technique, however, gives an unsatisfactory output performance under the mismatch of the system parameters and load condition, which is caused by the incomplete linearization. For the robust output response, the controller parameters will be estimated by a model reference adaptive technique where the load torque and the magnitude of the flux linkage are estimated. These estimated parameters will be used for the input-output linearization to obtain the robust control performance under the parameter variations. Also, to operate the IPM synchronous motor for the maximum torque-per-current control, the estimated flux linkage is employed for the generation of the d-axis current command. The robustness and the output dynamic performance of the proposed control scheme are verified through the computer simulations.

목차

Abstract

Ⅰ. Introduction

Ⅱ. Control System Description and Modeling of IPM Synchronous Motor

Ⅲ. Input-Output Feedback Linearization

Ⅳ. Estimation of Load Torque and Flux Linkage

Ⅴ. Simulation Results

Ⅵ. Conclusions

References

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UCI(KEPA) : I410-ECN-0101-2009-569-017763985