[关键词]
[摘要]
针对滑模控制(SMC)的永磁直线同步电机(PMLSM)位置跟踪中存在收敛速度慢和系统抖振严重两个方面的问题,进一步提高PMLSM控制的跟踪精度,改善系统的动态品质,在传统的幂次趋近律基础上,引入了Fal函数,并结合新型全局快速终端滑动模态,提升系统的趋近速度并对系统抖振进行有效的控制;在SMC系统外可采用干扰观测器来对系统的扰动信号等进行前馈补偿,提高系统的抗干扰处理能力。利用MATLAB/Simulink软件进行计算机仿真,并与传统幂次趋近律SMC进行对比。仿真分析表明,该跟踪控制算法能够提高系统的跟踪与控制精度,并且增强了系统的抗扰动性能。
[Key word]
[Abstract]
Aiming at the problems of low convergence speed and severe system chattering in permanent magnet linear synchronous motor (PMLSM) position tracking based on sliding mode control (SMC), the tracking accuracy of PMLSM control is further improved, and the dynamic quality of the system is improved. Based on the traditional power approaching law, Fal function is introduced, and a new global fast terminal sliding mode is combined. The approaching speed of the system is improved and the chattering of the system is effectively controlled. Outside the SMC system, the disturbance observer can be used to make feedforward compensation for the disturbance signals of the system, which improves the anti-disturbance processing ability of the system. MATLAB/Simulink software is used for computer simulation, and the results are compared with that of the traditional power approaching law SMC. The simulation analysis show that the tracking control algorithm can improve the tracking and control accuracy of the system, and enhance the system’s ability to resist disturbance.
[中图分类号]
[基金项目]
国家自然基金项目(11705135);西安市青年托举计划项目(095920201324)