一阶时滞系统的智慧PI控制

针对一阶时滞系统的控制问题,提出了一种不依赖于受控对象模型和属性的智慧比例–积分(WPI)控制方法. WPI控制方法通过速度因子将比例和积分环节紧密联系在一起形成一个协同控制核心.理论分析表明,由WPI控制器构成的闭环控制系统是全局渐近稳定的.数值仿真实验表明了WPI控制方法不仅响应速度快、控制精度高,而且还具有良好的抗扰动鲁棒性,因而是一种有效的控制方法,在时滞系统控制领域具有广泛的应用价值.

Wisdom PI control for first-order systems with time-delay

A wisdom proportional-integral (WPI) control method which does not depend on the model and attribute of the controlled objects is proposed for the control problem of first-order systems with time-delay. The proposed control approach consists of two phases which the proportional control is used in the first stage ( ) and the wisdom PI control is done in the second phase ( ). If the delay-time is not known, the switching time can be determined according to the detection state of the controlled plant. The theoretical analysis showed that the wisdom PI controller has only one gain parameter, which can not only guarantee the global asymptotic stability of the closed-loop control system, but also has a large tuning margin for the controller gain. Numerical simulation results showed that the proposed method is effective in response to not only fast response speed and high control accuracy, but also strong anti-disturbance capacity, which has wide application value in the field of time-delay system control.