摘要
该文针对水轮机调节系统非线性、时变、非最小相位的特点,采用微分几何非线性控制理论中的扰动解耦控制方法,设计了水轮机调节系统的非线性扰动解耦控制策略。在新控制策略中,除了机组转速偏差外,接力器行程偏差和有压引水系统水压力的变化也是控制信号的一部分。仿真结果表明该控制策略能有效的改善水轮机调节系统的动态性能,增强其鲁棒性和抗强干扰的能力。
Because of the nonlinear, time-varying and non- minimum-phase characteristics of hydraulic turbogenerators regulating system, disturbance decoupling method based on differential geometric nonlinear control theory was applied to design the nonlinear disturbance decoupling control strategy for hydraulic turbine governor system. Besides the generating unit speed error, wicket gate servomotor displacement and conduct water pressure also become the part of the control signal in the new control strategy as state feedback variables. The digital simulation results indicate that the new control strategy can improve the dynamic performance and strengthen the adaptive ability to real-time parameters with fast response and strong robustness.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第3期151-155,共5页
Proceedings of the CSEE
关键词
水轮机
调节系统
微分几何
非线性控制理论
非线性扰动解耦控制
Hydraulic turbogenerators regulating system
Nonlinear control system
Differential geometry theory
State feedback linearization
Disturbance decoupling
