摘要
针对中间再热式汽轮发电机组,提出具有大范围稳定性的目标全息反馈非线性协调控制设计方案,确保全部重要物理量均具有良好的动、静态性能。运用李亚普诺夫函数构造非线性协调控制规律,通过极点任意配置,使李亚普诺夫能量函数全导数在除平衡点以外的整个实数范围内是负定的,从而使系统在提出的控制规律作用下具有大范围稳定性。设计过程表明:在李亚普诺夫能量函数衰减的同时,各重要物理量逼近自己的参考轨迹。由于控制目标的选择不会严重影响非线性设计过程,因此提出的方案可根据实际需要全面、灵活地选择控制目标。仿真结果进一步证实了提出方案的有效性。
This paper proposes the global asymptotic stable coordinated control with objective holographic feedbacks to deal with the multi-objective control for the reheat-type turbo-generator set. Lyapunov energy function is used to construct the nonlinear coordinated law rendering the closed-loop system with global asymptotic stability. By the pole arrangement, the total derivative of Lyapunov energy function may be negative definite for any real number except for the equilibrium points. Therefore, the global asymptotic stability of the developed method is achieved. Due to the energy attenuation of Lyapunov function, tracking errors of all control objective variables are eliminated by the feedback coefficients. Meanwhile, it can be seen that nonlinear design is easy even if different control objectives are chosen. Since the nonlinear design process is not seriously affected by the choice of control objectives, the control objectives can be flexibly and completely chosen for the proposal. Simulation results demonstrate the effectiveness of the presented scheme.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第31期21-26,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(50867001)
江苏大学高级专业人才科研启动基金项目(09JDG008)~~
