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无轴承异步电机是非线性、多变量、强耦合的系统,特别是其转矩绕组和悬浮控制绕组之间存在很强的耦合关系。要实现电机稳定运行,必须要对这两套绕组实现非线性解耦控制。提出将内模控制与逆系统方法相结合的控制策略对无轴承异步电机进行非线性解耦控制,弥补了逆系统控制中PID调节器解耦的非理想性缺点。研究表明,系统响应速度快、抗扰性强,具有良好的动静态特性。
Bearingless induction motors are non-linear, multivariable, and strongly coupled systems, and in particular, have a strong coupling between the torque winding and the levitation control winding. To achieve stable operation of the motor, the two windings must be non-linear decoupling control. A control strategy based on the combination of internal model control and inverse system is proposed to control the non-bearing asynchronous motor nonlinearly, which makes up for the non-ideal shortcomings of PID controller decoupling in inverse system control. Research shows that the system has fast response, strong immunity and good dynamic and static characteristics.