论文:2013,Vol:31,Issue(3):457-463
引用本文:
刘卫国, 杨前, 赵南南, 张明慧. 高空电推进系统用PMSM无速度传感器反演控制策略研究[J]. 西北工业大学
Liu Weiguo, Yang Qian, Zhao Nannan, Zhang Minghui. An Effective Sensorless Backstepping Control of PMSM in High-Altitude Electric Propulsion System[J]. Northwestern polytechnical university

高空电推进系统用PMSM无速度传感器反演控制策略研究
刘卫国, 杨前, 赵南南, 张明慧
1. 西北工业大学 自动化学院, 陕西 西安 710072;
2. 西安建筑科技大学 机电工程学院, 陕西 西安 710055
摘要:
采用滑模(SM)控制方法估计两相静止坐标系下的反电动势,采用锁相环(PLL)方法估计PMSM实际的速度和转子位置,采用反演法设计速度和电流跟踪控制器,提出了一种基于SM和PLL的高空电推进系统用PMSM无速度传感器的反演控制策略。采用Lyapunov稳定定理证明了滑模观测器的稳定性。仿真和基于dSPACE系统的硬件在回路实验验证了所提出方案的有效性,在负载条件下,所设计的滑模锁相环观测器能够准确估计PMSM中、低速运行时的速度和转子位置,按参考转速变截止频率的方法可以动态补偿由一阶低通滤波器引起的转子相位误差,反演控制器在保证系统渐进稳定的基础上能够实现转速和电流的有效调节。
关键词:    滑模    锁相环    无速度传感器    反演    PMSM    dSPACE   
An Effective Sensorless Backstepping Control of PMSM in High-Altitude Electric Propulsion System
Liu Weiguo, Yang Qian, Zhao Nannan, Zhang Minghui
1. Department of Automatic Control,Northwestern Polytechnical University,Xi'an 710072,China;
2. Department of Mechanical & Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China
Abstract:
According to study on sensorless control of PMSM used in high-altitude electric propulsion system, a sensorless backstepping control method of PMSM based on sliding mode phase-locked loop speed observer is pro-posed in this paper.The EMF equations are established by sliding mode equations based on PMSM stator mathemat-ical models, and the speed and rotor position are evaluated by phase-locked loop.The backstepping algorithm is applied to design speed and current tracking controller.The stability of observer is proved by Lyapunov stability theory.The hardware in loop experiment of PMSM sensorless backstepping control system is implemented based on dSPACE experiment platform.Simulink simulation and experiment results show that the sensorless backstepping control of PMSM based on sliding mode phase-locked loop speed observer is correct and feasible.The speed and ro-tor position of PMSM with small torque load in low speed can be evaluated accurately based on sliding mode phase-locked loop speed observer, the rotor phase errors produced by the first order low-pass filters can be dynamically compensated for by the variable cutoff frequency method according to reference speed, and on the basis of guaran-teeing the whole control system's asymptotical stability, backstepping controller can achieve the speed and current regulation effectively.
Key words:    sliding mode control    phase locked loops    sensorless    backstepping    dSPACE experiment platform   
收稿日期: 2012-04-23     修回日期:
DOI:
基金项目: 国家自然科学基金(51277152);陕西省自然科学基金(2011GZ013);西安市科技计划(CX12185(2))资助
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作者简介: 刘卫国(1960-),西北工业大学教授,主要从事永磁电机设计及新型控制技术研究。
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