基于二次逼近模型的PID增益预测控制

PID gain predictive control based on the secondary approximation model

针对传统的 PID控制和预测控制的问题 ,文章提出一种基于二次逼近模型的 PID增益预测控制 ,并阐述了该系统的结构、算法和应用特点。通过二次逼近建模的方法 ,提高了建模的算法速度和实际逼近精度以及较强的动态补偿能力。运用这种模型的预测和传统的 PID相结合 ,使控制系统具有增益自适应能力和较好的鲁棒性 。

In this paper, a kind of PID gain predictive control based on the secondary approximation model is proposed for solving the problems in the traditional PID control and predictive control.The theorem,algorithm,structure and characteristics of the new system are described. By using the secondary approximation modelling method, the fault of BP algorithm can be overcome, and the abilities of approximation and dynamic compensation of the model can be advanced.Based on the model and traditoinal PID,the new system has gained adaptive ability and effective robustness. A simulation example is given to show the characteristics of the presented control method.