基于发电单元完整模型的backstepping控制  

Backstepping dynamic surface control based on integral model of generating unit system

作　　者：赵海英[1] 肖雪飞[2] 吴忠强[2] 

机构地区：[1]燕山大学理学院,河北秦皇岛066004 [2]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《热力发电》2015年第1期100-105,111,共7页Thermal Power Generation

基　　金：河北省自然科学基金资助项目(F2012203088)

摘　　要：针对发电单元高阶非线性完整数学模型(锅炉、汽轮机和发电机模型),结合系统参数的不确定性,采用backstepping动态面控制方法设计了一种鲁棒自适应控制器。在反推设计过程中引入了虚拟控制器和一阶低通滤波器,从而避免了对模型非线性进行多次微分而引起的算法复杂性,使设计方法简化。理论分析和仿真结果均表明,该控制器能够保证闭环系统的半全局渐近稳定性,对系统参数的不确定性具有较强的鲁棒性,在系统发生故障时能够使系统稳定运行。According to a complete high-order nonlinear mathematical model（boiler,turbine and generator model）of the power generation unit system with parameter uncertainties,a self-adaptive robust controller was designed based on backstepping dynamic surface control method.A virtual controller and one-order low-pass filter were introduced in backstepping design procedure,to avoid complexity of the algorithm caused by many times differentiation of the nonlinear model,which simplifies the design.Theoretical analysis and simulation results show that,the controller can ensure the semi-global asymptotical stability of the closed-loop system.For the system＇s parameter uncertainty,this controuer has strong robustness and can ensure stable operation when the system is out of order.

关 键 词：发电单元 动态面控制 高阶非线性 完整数学模型 反推设计方法 参数不确定性 

分 类 号：TM62[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]