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提出了一种基于多目标遗传算法和静态H∞回路成形综合的给定结构鲁棒控制器设计方法,采用该方法设计了低负荷下蒸汽发生器水位的比例微分串联滤波器型控制器,并进行了水位给定值阶跃变化、蒸汽流量阶跃扰动和给水压力波动下控制系统响应的仿真试验.结果表明:所设计控制系统的鲁棒稳定性和鲁棒性能优于其他3种基于H∞回路成形的控制器设计方案;所得控制器在给定值阶跃变化、给水和流量扰动下均能保持较好的控制品质,具有良好的鲁棒性.
A robust controller design method for a given structure based on multi-objective genetic algorithm and static H∞ loop shaping synthesis is proposed. By using this method, a proportional-differential-series filter controller for water level of steam generator under low load is designed. The simulation experiments of step response of water level setpoint, step disturbance of steam flow and control system response to pressure fluctuation of feedwater were carried out. The results show that the robust stability and robustness of the designed control system are superior to those of the other three control systems based on H ∞ loop forming controller design. The controller can maintain good control quality with given step value changes, water supply and flow disturbances, and has good robustness.