新型MRAS无速度传感器矢量控制系统的研究

Research on the MRAS-based Speed Sensorless Vector Control System

针对MRAS无速度传感器控制系统中的参考模型存在误差累计的缺点,提出了一种新型自适应MRAS无速度矢量控制模型。该模型对原控制模型进行离散化处理和增量提取,并对增量进行叠加后输出,使原控制模型的纯积分环节带来的初值和直流分量相抵消。该模型的特点是可以防止直流分量的累加引起的误差,提高估计精度。仿真试验结果表明控制模型是有效的。

Aiming at the shortcoming of the accumulated error existing in the reference model of MRAS speed sensorless control system,the new type of adaptive MRAS speed sensorless vector control model is proposed.The original control model is discretely processed by proposed model,and the increments are extracted and added to output.It makes counteraction of the initial value and DC components brought by the pure integral element in original model,thus to avoid the error caused by accumulated DC components,and enhances the estimation accuracy.The result of simulation proves that the control model is effective.