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温度控制是具有大时滞特性的控制对象,当工况发生变化时,固定取值PID控制器难以实现理想的控制效果。基于广义预测控制的自适应PID控制器通过最小二乘法对系统进行辨识,将Diophantine方程的递推解与PID参数相对应,实现PID参数的自适应。MATLAB仿真和Automation Studio仿真实验表明,以基于广义预测控制的PID控制器代替固定取值的PID控制器来控制温度对象,在稳定性和实时跟踪等方面都能取得良好的控制效果。
Temperature control is a control object with large time-delay characteristics. When the operating conditions change, the fixed-value PID controller is difficult to achieve the desired control effect. The adaptive PID controller based on generalized predictive control identifies the system by the least square method, and the recursive solution of the Diophantine equation is corresponding to the PID parameter to realize the PID parameter self-adaptation. MATLAB simulation and Automation Studio simulation show that PID control based on generalized predictive control can replace temperature fixed PID controller to control temperature object and achieve good control effect in stability and real-time tracking.