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针对一类含有执行器故障的新型操纵面变体飞行器的容错控制问题,将控制分配方法和整数规划理论相结合,提出了一种基于控制分配的容错控制方法.首先设计虚拟控制律,使飞行器的状态变量跟踪参考模型.然后通过执行阵列重构将执行器的概率性故障及饱和约束转化为整数规划中的决策变量的约束,进而将控制分配问题转换成一类决策变量概率可变的整数规划问题.为保证解算的有效性及收敛性,运用改进的遗传算法进行求解.仿真结果表明,飞行器在执行器发生故障的情形下,仍具有良好的跟踪性能.
Aiming at the fault-tolerant control problem of a new type of control plane variant aircraft with actuator failure, a method of fault-tolerant control based on control distribution is proposed by combining the control distribution method with the integer programming theory.First, a virtual control law is designed to make the aircraft The state variable tracking reference model is implemented.At the same time, by implementing array reconfiguration, the actuator’s probabilistic failure and saturation constraints are transformed into the constraints of the decision variables in integer programming, and then the control assignment problem is transformed into a variable-probability integer programming Problem.In order to ensure the validity and convergence of the solution, the improved genetic algorithm is used to solve the problem.The simulation results show that the aircraft still has good tracking performance under the condition of actuator failure.