通过分析扭振分量极小化前后的模型摄动边界变化 ,给出了考虑扭振模态的汽轮机最优汽门控制器的鲁棒设计方法。它可以在保证扭振稳定性的前提下 ,大大提高系统性能 ;同时使用扭振分量极小化的转速作为反馈转速后 ,可以设计出性能更好的控制系统 By analyzing the variation of the model perturbation boundary before and after minimization of the torsional vibration component, a robust design method for turbine optimal valve controller considering torsional vibration mode is given. It can greatly improve the system performance under the premise of ensuring the torsional vibration stability. At the same time, using the minimized rotational speed of the torsional vibration component as the feedback speed, a better performance control system can be designed