摘要
针对面贴式永磁同步电机无位置传感器速度控制系统存在的速度检测延迟、检测误差较大、动态响应不够快等问题,对永磁同步电机无位置传感器速度控制系统模型和传统滑模速度观测器结构和原理进行了分析,对高阶滑模算法理论进行了推导,结合永磁同步电机数学模型,提出了一种以位置信号为滑模变量,以高阶滑模变结构算法为基础的新型滑模转速观测器,利用Simulink软件构建了基于新型滑模速度观测器永磁同步电机矢量控制系统,对电机的起动特性、速度跟踪特性、抗外界干扰性能进行了研究。研究结果表明,由于新的滑模观测器将转子位置与反电势信号的关系进行了分离,消除了反电势信号处理滤波器对速度估算的延迟,提高了速度检测精度,从而改善了系统的稳态和动态性能。
Aiming at solving the speed detection delay and low precision of the sensorless control system of surface mounted permanent magnet synchronous motor（ PMSM）,a high-order sliding mode observer was considered for rotor position and speed estimations of a PMSM. The PMSM sensorless speed control system model and the traditional sliding mode speed observer were analyzed. According to the mathematical model of the PMSM and the high-order sliding mode algorithm theory,a novel speed observer was proposed. The vector control system of PMSM based on the new sliding mode speed observer was built by using simulink software and the starting characteristic,the speed tracking performance and the anti-disturbance performance were studied. The results indicate that the filtering effect on the speed could be completely avoided and the speed detection accuracy is increased,so the steady state and dynamic performance of control system and robustness is improved.
出处
《机电工程》
CAS
2016年第9期1135-1139,共5页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51307151)
浙江理工大学科研启动基金项目(3022151-Y)
