永磁直线同步电机超短反馈滑模控制研究

永磁直线同步电机矢量控制的速度环常采用PI控制。传统PI控制器在速度追踪时存在起动过程超调大、受到负载扰动时调节时间长等不足之处。为提高伺服性能,滑模控制被应用到伺服系统中,但其缺点是存在抖振问题。因此,提出一种基于内分泌激素调节的滑模控制方法,可以有效降低速度的超调量,缩短受到外部扰动时的调节时间。在MATLAB中搭建了系统的仿真模型,仿真结果表明其对速度和推力的控制效果显著,优于传统的PI控制和常规的滑模控制。

Research on Ultrashort Feedback Sliding Mode Control ofPermanent Magnet Linear Synchronous Motor

The speed loop of the vector control of permanent magnet linear synchronous motor (PMLSM) was usually controlled by PI. The traditional PI controller has some shortcomings such as overshoot in the starting process and long adjusting time under load disturbance. In order to improve the servo performance, sliding mode control was applied to the servo system, but its shortcoming was buffeting. Therefore, a sliding mode control method based on endocrine hormone regulation was proposed, which could effectively reduce the overshoot of speed and shorten the adjusting time when the hormone was disturbed by external disturbance by using the ultra short feedback mechanism of hormone secretion. The simulation model of the system was built in MATLAB. The simulation results showed that the control performance of speed and thrust was remarkable and excellent, and was better than the traditional PI control and sliding mode control.