A prescribed performance anti-saturation fault-tolerant control method for hypersonic flight vehicle
In order to solve the problems of disturbance and uncertainty,partial failure of actuator and input saturation in flight of hypersonic flight vehicle,a prescribed performance control anti-saturation and fault-tolerant control method was proposed.In the process of controller design,the extended state observer was used to estimate the disturbance and uncertainty,and the compensation was carried out in the controller.Secondly,a new prescribed performance control scheme with finite-time convergence was designed,which was combined with adaptive control to solve the problem of partial actuator fai-lure.Finally,the input saturation problem was solved by adding an auxiliary system.The simulation results show that the designed control scheme can effectively reduce the fault influence,improve the convergence speed of tracking error,and limit the variation range of input.
hypersonic flight vehicleprescribe performance controlanti-saturation controlfault-tolerant control
NETL
NSTL
万方数据
