一种具有PI结构的时滞系统APFC控制

Adaptive Predictive Function Control with PI Structure for Time-delay Systems

提出了一种具有PI结构的时滞系统自适应预测函数控制(APFC),该算法通过在性能指标函数中引入预测输出误差和预测输出增量误差,使最终形成的控制器具有比例-积分(PI)结构。结合了预测控制具有较好的处理时滞、快速跟踪和PID调节器抗干扰性强、鲁棒性强的优点,并且模型参数是通过带遗忘因子的递推最小二乘算法在线辨识得到。在具有时滞的工业过程数学模型上进行仿真研究,结果表明,该算法具有较好的跟踪效果、抗干扰能力和鲁棒性。

An adaptive predictive function control （APFC） with PI structure strategy for time-delay systems is developed. Tiffs algorithm introduced error and increment error of predictive output signal to the cost function, which makes controller has PI structure. Tiffs algorithm has the ability of dealing with delay and fast tracking effect for predictive function control and favorable anti-interference and robust for PID tuner. The permanents of model are identified by the recursive least square method with exponential forgetting. The simulation results of industry mathematical model with delay show that the control strategy has favorable tracking effect, anti-interference and robust.