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摘要: 提出了一种简洁快速的感应电动机的无速度传感控制方法. 该方法利用一种新型的观测器获得精确的速度与磁通的模的估计, 然后设计了二阶控制器. 在不考虑同步转速为零且负载转矩不可测的个别工程条件下, 证明了该方法能够全局稳定的跟踪转子的给定参考速度和参考磁通. 数值仿真进一步验证了所提出控制方法的有效性.Abstract: A simple speed sensorless control scheme for induction motor is proposed in this paper. A new nonlinear observer is designed to obtain the high-precision speed and rotor flux modulus, and a second-order controller is designed by using the obtained states. The global asymptotic stability of the closed-loop system is proved in agreements with the Lyapunov's direct method. Simulations conducted on a three-phase single pole pair induction motor are also included to demonstrate the effectiveness of the proposed approach.
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Key words:
- Speed sensorless control /
- nonlinear control /
- nonlinear observer /
- induction motor
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