Active Fault-Tolerant Control for Near-Space Hypersonic Vehicles

Due to the harsh working environment, Near-Space Hypersonic Vehicles (NSHVs) have characteristics of frequent faults, which seriously affect flight safety. However, most researches focus on active fault-tolerant control for actuator faults. In order fill gap sensor this paper presents an Active Fault-Tolerant Control (AFTC) strategy NSHVs based Disturbance Rejection (ADRC) combined with fault diagnosis and evaluation. With proposed AFTC strategy, both faults can be compensated within 0.5 s. Wavelet packet decomposition Kernel Extreme Learning Machine (KELM) are associated ensure high accuracy real-time ability diagnosis. Simulation results show that method significantly reduce divergence by up 98%. The information is used generate tolerant compensation, ADRC achieve AFTC. Statistical indicate has lower static error than ADRC. endows complete missions even when various types appear. Its advantages demonstrated in comparison other methods.