Buck变换器显式模型预测控制及其v步离散方法研究

Explicit model predictive control needs to inversely solve its optimal control rate for the established system model. The accuracy of the control depends on the accuracy of the established model. Most modern control systems use digital controllers, which need to discretize the established model. In order to improve the accuracy of the explicit model prediction digital controller, this paper uses the v-resolution discrete method to discretize the model and analyzes the value of v. Based on the influence of discrete model accuracy, the discretization model of Buck circuit is established and its explicit control rate is derived. Finally, the output accuracy of the Buck circuit based on the explicit control rate under different loads and different input voltages is analyzed by simulation. The simulation results show that the explicit model predictive control based on the v-resolution discrete method has higher control precision than the traditional PI control.