分数阶 PID 控制器在火电厂锅炉汽包水位控制中的应用研究

基于有理函数逼近理论,结合对数幅频特性渐近线思想构造出了分数阶积分算子、分数阶微分算子的逼近函数,将此理论应用于分数阶PID控制器,并将此控制器用于锅炉汽包水位的控制中.仿真结果表明,分数阶PID控制器比传统的整数阶PID控制器以及模糊PID控制器对汽包水位的控制系统具有更好的控制品质.

On Application of Fractional Order PID Controller in Boiler Drum Water Level Control in Thermal Power Plant

Based on the theory of approximation by rational function ,and combined the ideology of asymp-totic line with log magnitude-frequency characteristics ,the approximation function of fractional order inte-gral operator and fractional order differential operator have been constructed .This theory has been applied to fractional order PID controller ,and the boiler drum water level controlled .As far as the boiler drum water level controlling is concerned ,simulation result proves the fractional order PID controller have more better control quality than traditional integral order PID controller .