摘要
目的:该文应用基于微分几何和反馈线性化方法的滑模变结构算法对感应电机进行控制。方法:在该控制策略中由于用到了参考模型,因此转子速度和转子磁通的瞬态性能可以通过选择线性参考模型的设计参数来调节。但是,滑模控制算法会带来抖振问题,抖振对系统的影响很大,为了解决这一问题,该文应用了一个连续的控制项减小抖振。同时设计了简单的观测器对转子磁通和转矩进行估计,并利用了感应电机的机械方程对电机速度进行计算。结论:利用MATLAB进行仿真,基本消除了传感器带来的麻烦。
In this paper,an algorithm of sliding mode variable structure,which is based on differential geometry and method of feedback linearization,is applied to the control of induction motors.In the control strategy,with the application of a reference model,the rotor speed and rotor flux of the transient performance can be adjusted through the choice of design parameters of linear reference models.However,the sliding mode control algorithm causes buffeting problems,bringing much influence on the system.In order to solve this problem,the writer applies a continuous control to reducing buffeting.At the same time a simple observer is designed for the estimation of the rotor flux and torque,and the mechanical equation of induction motor is applied to the calculation of the motor speed,thus eliminating the problem caused by the sensor.
出处
《微计算机信息》
2010年第22期103-104,228,共3页
Control & Automation
关键词
滑模变结构
感应电机
抖振
sliding mode variable structure
induction motor
buffeting
