低分辨率编码器无刷直流电动机转矩控制策略

Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95 Pub Date : 1995-02-21 DOI:10.1109/PEDS.1995.404872

U. Huh, Je-Hie Lee, Taekgyu Lee

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引用次数: 13

摘要

本文介绍了一种带观测器的无刷直流电动机转矩控制器。转矩控制策略需要精确的位置和速度信息，但无刷直流电机有一个低分辨率的内部编码器来确定开关位置。因此，速度和中间位置是由非线性建模得到的稳定估计量得到的。推导了考虑自由流的任意反电动势波形电机转矩控制算法。在无转矩脉动的大转速范围内实现准确的转速控制是可能的。该系统易于实现，并且通过新的电机建模减少了计算时间。在实验中，控制器由DSP TMS320C31实现。仿真和实验验证了该控制器的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A torque control strategy of brushless DC motor with low resolution encoder

This paper describes a torque controller with an observer for a brushless DC (BLDC) motor. The torque control strategy needs accurate position and speed information, but the BLDC motor has a low resolution internal encoder to determine switching position. Therefore, the speed and the intermediate position are obtained from a stable estimator which would be derived from nonlinear modelling. The torque control algorithm is derived for a motor of arbitrary back-EMF waveform considering the freewheeling current. It would be possible to have accurate speed control for wide range of speed without torque ripple. The proposed system is easily implemented and computation time is reduced by new motor modelling. In the experiment, the controller is realized by a DSP TMS320C31. The effectiveness of the controller is shown by simulation and experiment.<>

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Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95

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