一种补偿非最小相位特性的汽包锅炉单冲量给水调节器设计

The Design of a Drum Boiler Single-element Feedwater Regulator with compensation of Nonminimum Phase Characteristics

在锅炉汽包水位控制系统中，若采用沸腾式的省煤器，当给水流量突然增加时，会出现比较严重的虚假水位现象．归结到控制模型上就是控制系统为非最小相位系统，它将使控制质量变坏。为了克服这种缺点．本文提出了一种补偿非最小相位特性的设计方法来提高汽包水位调节质量。这一方法原理简明，易于实施，仿真结果表明它具有良好的控制效果。

hen a steaming economizer is used there will emerge in the boiler drum water level control system a relatively serious phenomenon of indicating a false water level in the case of a sudden increase in feedwater flow rate. In terms of control model this exhibits itself as a non-minimum phase system of control system, resulting in a deterioration of control quality. TO overcome this defect, the authors have come up with a design method with compensation of non-minimum phase characteristics to enhance the drum water level regulation qulaity. The said method features a simplified principle and easily lends itself to the realization of simulation results, thus attaining a good control effectiveness.