一种预测控制方法及其仿真

A Predictive Control Algorithm and its Simulation

针对现有预测控制方法的最优控制律的计算较为复杂的问题,提出了一种新的预测控制算法。与现有预测控制算法相比,该算法结构简单,计算量小,鲁棒性强。对算法在一个采样周期内控制律的求取进行了较详细说明。通过对线性和非线性系统的仿真,说明了该算法对线性系统能达到很好的预测控制效果,同时对时变、非线性系统也具有较好的适应性,并具有较强的抗干扰能力。对于快时变系统,该算法需要根据实际时变特性对相关系数加以调整,来达到较满意的效果。

In present predictive control algorithms,it is difficult to get the optimal control strategy,a new predictive control algorithm was presented in this paper,compared with the old predictive algorithms,its advantages were having a more simple structure and less amount of calculation. Gived a intensive illustration to this algorithm in a sampling period. Through the simulation of a linear system and a nonlinear system,it shows that this algorithm can acquire a very good control effect as for the linear system,meanwhile,this algorithm has a good adaptivity to timevarying,nonlinear system and has a good capability of antidisturbance.Simulation shows that it is necessary to adjust relevant coefficients in this algorithm to actual rapidly timevarying systems, so this algorithm desires our further research.