信息与控制2017，Vol.46Issue(3)：275-282,8.DOI:10.13976/j.cnki.xk.2017.0275
基于LPV观测器的风力机桨距执行器故障诊断
Fault Diagnosis for the Pitch Actuator of Wind Turbines Using the LPV Observer
摘要
Abstract
To diagnose the faults of a wind turbine blade pitch actuator more quickly and accurately, an adaptive linear parameter varying (LPV) fault observer based on the established LPV model of wind turbines is designed.Limiting conditions of the adaptive LPV fault observer are obtained by considering the influence of the wind disturbance and faults on the stability of the system and extending fault observer constraints to the LPV systems.The LPV system could be approximated by adapting the convex decomposition technique.The problem of solving infinitely many inequalities has now been translated into the problem of solving finite inequalities.The observer gain and the fault estimation update gain that vary with the scheduling variables are solved by using linear matrix inequality tools.Simulation results demonstrate that compared with the adaptive fault observer algorithm, this algorithm has better rapidity and sensitivity in the treatment of wind turbine pitch actuator faults under sinusoidal fault, high content of air hydraulic, and pump blockage fault.关键词
风力机/执行器故障/线性变参数/故障观测器Key words
wind turbine/actuator faults/linear parameter varying(LPV)/fault observer分类
信息技术与安全科学引用本文复制引用
刘稳,吴定会..基于LPV观测器的风力机桨距执行器故障诊断[J].信息与控制,2017,46(3):275-282,8.基金项目
国家自然科学基金资助项目(61572237,61573167) （61572237,61573167）
