【作者】 王印松； 田瑞丽； 吕丽霞；

【Author】 Wang Yinsong,Tian Ruili,Lui Lixia School of control science and Engineering,North China Electric Power University,Baoding 071003,Hebei P.R.China

【机构】 华北电力大学控制科学与工程学院；

【摘要】 针对火电厂单元机组中时间常数不确定的锅炉-汽轮机协调控制系统非线性模型,采用自适应"反步"法,通过引入虚拟控制变量,逐步构造出动态系统的Lyapunov函数,设计了一个综合非线性控制器,并构造了不确定参数的自适应律。该控制器保证了系统的稳定性,实现跟踪误差收敛于零并对系统的不确定具有很强的鲁棒性。仿真结果表明,所设计的控制器能达到比较理想的性能。更多还原

【Abstract】 In this paper,the boiler-turbine coordinated control system is designed based on the adaptive backstepping method for the nonlinear model with the uncertainly parameters.By constructing some virtual control variables,the Lyapunov function of dynamic system are gradually designed.Finally,the non-linear controller and the parameter updating law are given.This controller not only ensures the stability of system but also could make the tracking error convergence to zero,and it has a strong robustness for the uncertainly parameters.The simulation results have proved that it is feasible.更多还原