Static Decoupling Control Based on Hammerstein Model and Neural Network for Induction Motors

Mei Congli, Yin Kaiting, Huang Wentao, Liu Guohai
2016 International Journal of Control and Automation  
A novel static decoupling control strategy based on Hammerstein model and neural network for induction motors was proposed in this paper. Hammerstein model, consisting of a static nonlinear module and a dynamic linear module, can be used to model many nonlinear systems. In the proposed method, firstly, neural network and auto-regressive moving-average (ARMA) model were employed to construct the static nonlinear module and the dynamic linear module respectively. Further, neural network inverse
more » ... del of the static nonlinear module can be trained on the static dataset collected in the framework of the Hammerstein model. Finally, the inverse model was utilized to offset the nonlinear characteristic of an induction motor, decoupled into a rotor speed subsystem and a rotor flux subsystem. Simulations show that the proposed static decoupling control strategy has satisfactory decoupling performances and robustness to load disturbance in close loop control. A typical structure of Hammerstein model, consisting of a static nonlinear module N(·) and a dynamic linear module G(z) can be represented in Figure 2 [11].
doi:10.14257/ijca.2016.9.10.31 fatcat:g5lhw3ntnvenjjboe7oohbbp3i