基于分数阶IMC-PID的锅炉蒸汽温度控制

Controlling steam temperature based on fractional-order IMC-PID

近年来,分数阶微积分已被广泛应用于诸多领域中。针对分数阶控制器设计时参数整定困难的问题,基于内模控制的设计框架,将内模控制应用于分数阶热力系统的控制器设计。针对分数阶次a<1,a=1和a>1,分别给出了分数阶PID控制器类的实现,使分数阶控制器的参数整定得以简化。应用于某循环流化床锅炉主汽温对象的仿真结果表明,所设计的控制器,具有良好的设定值跟踪能力、抗干扰性能以及较强的鲁棒性。

In recent years, fractional order calculus has been widely applied to many fields. Aiming at the difficulty of controller parameters tuning, internal model control （IMC） is used to the controller design for fractional order thermal system based on the architecture of IMC. Fractional order PID controller class realization is afforded for a 〈 1, a = 1 and a 〉 1 respectively, which simplifies the controller parameter tuning. The simulation results of the main steam tem- perature system of a circulating fluidized bed boiler show that the designed controller has good set-point tracking capa- bility and anti-disturbance performance as well as good robustness.