基于LQG/LTR方法的水轮机最优控制系统研究

摘要

LQG/LTR is a design method of multi-variable in frequency domain, which is widely used in aerospace and ship control for its good robustness and decoupling character. This paper introduces this method into hydraulic turbine regulation system. Linear optimal controller was obtained from state feedback model of the hydraulic turbine control system. The simulation results show that this control method can result better dynamic quality. It can also achieve better robustness and stability.%线性高斯二次型/回路传递恢复(LQG/LTR)方法是基于频域的多变量设计方法,因其具有良好的鲁棒性和解耦特性,在航空、船舶控制领域得到广泛的应用.本文将LQG/LTR引入到水轮机调速系统控制领域中,针对水轮机控制系统状态反馈模型进行了最优控制策略研究.仿真结果表明该控制方法可实现较好的动态品质,在模型有较大摄动时系统仍能实现较强的鲁棒稳定性.