摘要
针对具有随机丢包的Lipschitz非线性网络化控制系统,研究了系统存在外部干扰情况下的鲁棒故障检测问题.由于带宽有限,传感器-控制器和控制器-执行器的网络通道中存在随机数据包丢失,鉴于此,设计一种基于观测器的故障检测滤波器,给出存在故障检测滤波器的充分条件,使误差系统均方指数稳定并达到鲁棒∞干扰抑制水平,同时给出基于观测残差均方值的故障检测策略.通过仿真算例验证了所提出方法的有效性.
The problem of fault detection for Lipschitz nonlinear networked control systems with random packets loss when there exists external interference is concerned in the paper. Because of the limited bandwidth of the channels, such random packets loss can occur, simultaneously, in the communication channels from the sensor to the controller and from the controller to the actuator. An observer-based fault detection filter is then designed. A sufficient condition is also derived, which makes the error systems exponentially mean-square stable and achieve the prescribed H∞ disturbance-rejection- attenuation level. In addition, the scheme of fault detection is obtained by using the mean squares of the residual. Simulation example illustrates the effectiveness of the proposed approach.
出处
《控制与决策》
EI
CSCD
北大核心
2013年第10期1596-1600,共5页
Control and Decision
基金
国家自然科学基金项目(61074065)
关键词
非线性网络控制系统
随机丢包
故障检测滤波器
鲁棒H∞性能
nonlinear networked control system
random packets loss
fault detection filter
robust H∞ performance
