基于新型趋近率的永磁同步电机滑模变结构控制

将一种新的变指数趋近律滑模变结构控制策略用于永磁同步电机直接转矩控制中，解决了传统直接转矩控制中存在的磁链和转矩脉动大、逆变器开关不恒定、转矩脉动造成的高频噪声等问题。该趋近律可解决滑模控制中的抖振问题。仿真结果表明该方案对系统参数不确定、外部扰动和噪声具有强鲁棒性，系统的动态、静态品质优良，改善了转矩和磁链的脉动大的问题。滑模变结构的抖振也得到了明显抑制。

Permanent Magnet Synchronous Machine based on A Novel Approaching Law Sliding Mode Variable Structure Control

A novel variable exponent reaching law of sliding mode control (SMC) strategy was proposed to direct torque control (DTC) of permanent magnet synchronous machine (PMSM) in order to solve some problems, such as high flux and torque ripple of conventional DTC, variable switching frequency and high frequency noise caused by the high torque ripple .The novel reaching law can also solve the chattering problem of SMC. Simulation results show that the control strategy solve these problems effectively and show strong robustness to parameters uncertainty, external disturbance and noise. The whole system has good dynamic and static performance. The chattering of SMC is restrained obviously.