论文部分内容阅读
针对具有时变时延和丢包的网络化控制系统,考虑参数不确定性和外界有限能量扰动的影响,研究了系统在执行器发生失效故障时的满意容错设计问题。将丢包当作一种特殊时延,综合考虑时延上、下界及变化率,通过构造适当的时滞依赖Lyapunov-Krasovskii泛函,推证出了具有两类不同被调输出的不确定闭环故障网络化控制系统,在α-稳定、H∞扰动衰减指标和广义H2三类指标共同约束下的满意容错设计准则,并以求解LMIs的方式给出了具有多指标约束的满意容错控制器的优化设计方法。由于证明过程未进行模型转换和引入其他自由权矩阵,Lyapunov-Krasovskii泛函中充分考虑了时延信息,并采用了较紧的积分不等式,因而结果具有较少保守性和计算量。最后以仿真算例验证了该方法的可行性和有效性。
Aiming at the networked control system with time-varying delay and packet loss, considering the influence of parameter uncertainty and limited external energy disturbance, the satisfactory fault-tolerant design of the system in the event of a failure of the actuator is studied. Considering the packet loss as a special delay, we consider the upper and lower bounds of the delay and the rate of change. By constructing the appropriate Lyapunov-Krasovskii functional, the closed loop with two different types of modulated outputs Fault-tolerant networked control system, a satisfactory fault-tolerant design criterion is proposed under the constraints of α-stability, H∞ disturbance attenuation and generalized H2 three kinds of indicators, and a satisfactory fault-tolerant controller with multi-index constraints is given for solving LMIs Optimize the design method. Due to the fact that the proof process does not convert the model and introduces other free weights, the Lyapunov-Krasovskii functional fully takes into account the delay information and adopts a tighter integral inequality. As a result, the results are less conservative and computationally intensive. Finally, a simulation example is given to verify the feasibility and effectiveness of the proposed method.