针对高空电推进系统用永磁同步电机的转速跟踪控制问题,提出一种基于反演的积分滑模控制器.对控制器所采用的数学模型、控制算法、稳定性条件等进行研究.在反演法的基础上,将积分因子引入速度环,对转速误差进行补偿；采用指数趋近律构造电流误差的滑模面方程,以减小反演法对系统参数的敏感性；设计全局Lyapunov函数保证控制器的渐进收敛；基于SIMULINK和dSPACE实验平台完成反演和积分滑模反演控制系统的仿真和实验分析.仿真和实验结果表明,相比于反演控制,当参考转速由300 r/min上升到400 r/min时,积分滑模反演控制系统的转速动态响应时间由0.2s减小到0.1s；突加1N·m负载时,转速超调由8 r/min减小到2 r/min,在系统参数摄动条件下,电机稳态运行时无转速静态误差.%An integral sliding mode controller based on backstepping was designed for permanent magnet synchronous motor (PMSM) with parameter uncertainties used for high-altitude electric propulsion system. An integral factor was applied to compensate dynamic speed error. The exponential reaching law was used to construct the sliding mode surface equation of current error to reduce the sensitivity of back-stepping control system to parameters uncertainties. The stability of the controller was also proved through the Lyapunov stability theory. The Simulink simulation and dSPACE experiment were done for the speed control system of PMSM based on backstepping and integral sliding mode backstepping controller. The simulation and experiment results show, the speed response time of the integral sliding mode backstepping control system reduces from 0. 2 s to 0. 1 s when the reference speed rises from 300 r/min to 400 r/min, the speed overshoot reduces from 8 r/min to 2 r/min when 1 N · m load torque is loaded suddenly, and there are no speed static error in steady state under the conditions of parameter uncertainties.
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