基于霍尔位置传感器的PMSM转速观测器状态估算误差抑制方法

发布时间：2018-06-12 16:13

本文选题：霍尔位置传感器 + 转速估计　；参考：《电工技术学报》2017年17期

【摘要】：霍尔位置传感器成本低,同时能够提供相对精确的位置信息,但其存在位置信息分辨率低、转速测算连续性差及滞后严重等缺点。龙伯格全阶转速观测器是一种闭环调节器,有效地利用了电机系统模型,能够为矢量控制提供较好的转速和角度反馈信号。但在数字控制系统的应用中,受霍尔信号采样周期远大于控制周期的影响,常规观测器的参数和结构设计方法在实际应用中仍无法得到理想的观测结果。该文在分析转速观测器在实际应用中存在问题的基础上,通过结合降阶观测器和多采样理论,提出了一种可有效从低分辨率霍尔位置信号中估算转速、转角的方法。多采样降阶观测器在最大程度上利用了霍尔信号的真实信息,在每个数字控制周期内都能产生转速和转角的估计值,具有理想的估算效果。通过仿真和实验验证了所提方法的有效性,控制效果能够很好地满足中低端伺服应用需求。
[Abstract]:Hall position sensor has the advantages of low cost and relatively accurate position information, but it has some disadvantages such as low resolution of position information, poor continuity of speed measurement and serious lag. The Runberg full order speed observer is a kind of closed loop regulator, which effectively utilizes the motor system model and can provide better speed and angle feedback signals for vector control. However, in the application of digital control system, the sampling period of Hall signal is much longer than the control period, so the parameter and structure design method of conventional observer can not get ideal observation results in practical application. Based on the analysis of the problems existing in the practical application of the rotational speed observer, this paper proposes an effective method to estimate the rotation speed and rotation angle from the low resolution Hall position signal by combining the reduced order observer and the multi-sampling theory. The multi-sampling reduced-order observer uses the real information of Hall signal to the maximum extent and can generate the estimation of rotation speed and rotation angle in each digital control cycle. It has an ideal estimation effect. The effectiveness of the proposed method is verified by simulation and experiments, and the control effect can well meet the requirements of the low end servo application.
【作者单位】：哈尔滨工业大学电气工程系;
【基金】：国家科技重大专项资助项目(2012ZX04001051)
【分类号】：TM341;TP212

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