论文部分内容阅读
针对具有时变时延的网络控制系统故障检测问题,提出了一种基于鲁棒H∞思想的故障检测滤波器设计方法.将鲁棒H∞故障检测问题归结为寻找滤波器参数矩阵,使得滤波系统内稳定并且满足鲁棒H∞性能指标.根据残差评价函数和故障阈值判断系统是否存在故障.假设时变时延的上下界已知.基于时延相关Lyapunov-Krasovskii泛函方法给出了系统内稳定并且具有H∞指标的时延相关条件.在外部控制输入、外界干扰和故障信号有界的情况下,所设计的故障检测滤波器能够保证生成的残差信号有界.针对HiMAT(Highly Maneuverable Technology)飞行器设计了故障检测滤波器,并通过仿真分析验证了所提出方法的有效性.
To solve the problem of network control system fault detection with time-varying delay, a fault detection filter design method based on robust H∞concept is proposed. The problem of robust H∞ fault detection is reduced to finding the filter parameter matrix, The system is stable and satisfies the robust H∞ performance index.According to the residual evaluation function and the failure threshold to judge whether the system is faulty.It is assumed that the upper and lower bounds of the time varying delay are known.The delay-dependent Lyapunov-Krasovskii functional method is given The system is stable and has the delay-dependent condition of H∞ index.The designed fault detection filter can guarantee the bounded residual signal under the condition of external control input, external disturbance and fault signal bounded.For HiMAT ( Highly Maneuverable Technology) aircraft designed the fault detection filter and verified the effectiveness of the proposed method through simulation analysis.