Abstract:
A grey system prediction PID control scheme based on particle swarm optimization is developed for mult(?)- input-multi-output systems.The proposed scheme divides the MIMO(multi-input multi-output)system into a set of multi- input-single-output subsystems.The output of each subsystem is predicted with a multi-variable first order grey model GM(1,
N),and the MIMO system diagonal decoupling is implemented.Parameters of the PID controller are optimized with the particle swarm algorithm,and each subsystem is controlled with the optimized PID controller.Simulations are made on two typical multivariable control processes,and the results show that the presented method is of small overshoot, high robustness,fast response,and strong anti-jamming capability.