非线性网络控制系统的故障检测

针对一类具有随机丢包的非线性网络控制系统,研究了系统的故障检测问题.基于T-S模糊模型将对象线性化,考虑了控制器和执行器之间、控制器和传感器之间的随机丢包现象,采用满足Bernoulli分布的二进制序列来描述数据传输的随机丢包.同时利用模糊主导子系统规则,设计了模糊观测器,给出了基于观测器闭环系统渐近稳定的充分条件,并通过数值仿真实验验证了该方法的有效性.

Fault detection for nonlinear networked control system with random packet losses

With the presence of random packet losses effects in the network,the problem of fault detection for a class of nonlinear networked control systems is investigated.Firstly,based on a T-S fuzzy model,the object is linearized.Random packet losses from the sensor to the controller and from the controller to the actuator are simultaneously considered.And the random packet losses are described by a binary switching sequence satisfying a Bernoulli distribution.Secondly,the fuzzy observer is designed by using the fuzzy dominant subsystem rule.Moreover,sufficient conditions for asymptotical stability of the observer-based closed-loop systems are proposed.Finally,one numerical example is given to illustrate the effectiveness of the proposed results.