【摘要】 将轴系未建模扭振模态视为刚体转子模型的摄动 ,基于广义观测器提出一种汽轮发电机轴系转速的鲁棒H∞ 滤波方法。将刚体转速广义观测器应用于汽轮发电机控制系统 ,证明了尽管实际柔性轴系与用于控制器设计的刚体转子模型之间存在模型不确定性 ,控制系统极点和刚体转速广义观测器极点仍具有分离特性 ,二者可以分别独立设计 ,分别保证控制性能和扭振稳定性 ,从而形成一种实用的汽轮发电机鲁棒控制的设计方法更多还原

【Abstract】 By considering the unmodelled torsional dynamics as the plant perturbation of the rigid rotor, a robust H ∞ filtering approach for the speed of the turbine generator shafts is developed based on the general observer. Though the plant perturbation exists between the flexible shafts and the rigid rotor used for controller design, it is proved that the control systems with the general observer of the rigid speed preserves the separation principle between the poles of control systems and that of the observer. So the controller and the general observer of the rigid speed can be designed independently to ensure control performance and torsional stability respectively. This is a practical design approach for robust control of turbine generators.更多还原