The Design of Fixed-Time Observer and Finite-Time Fault-Tolerant Control for Hypersonic Gliding Vehicles

Abstract

This paper proposes a fault-tolerant control scheme for a hypersonic gliding vehicle to counteract actuator faults and model uncertainties. Starting from the kinematic and aerodynamic models of the hypersonic vehicle, the control-oriented model subject to actuator faults is built. The observers are designed to estimate the information of actuator faults and model uncertainties, and to guarantee the estimation errors for converging to zero in fixed settling time. Subsequently, the finite-time multivariable terminal sliding mode control and composite-loop design are pursued to enable integration into the faulttolerant control, which can ensure the safety of the postfault vehicle in a timely manner. Simulation studies of a six degree-of-freedom nonlinear model of the hypersonic gliding vehicle are carried out to manifest the effectiveness of the investigated fault-tolerant control system. Index Terms-Hypersonic gliding vehicle, actuator faults and model uncertainties, fixed-time observer, finite-time fault-tolerant control.

Fault estimation and compensation for hypersonic flight vehicle via type-2 fuzzy technique and cuckoo search algorithm

“…5,6 Adaptive FTC is a common approach, which can make the flight state track the given command 7,8 A fault compensation scheme was investigated through a finite-time observer which was used to estimate actuator faults and uncertainties for hypersonic gliding vehicles. 9 Sliding mode control-based FTC was developed to ensure the tracking performance via suitable sliding mode surface. 10,11 Back-stepping fault-tolerant output tracking control was utilized for HFV subject to actuator constraints, disturbances, and uncertainties.…”

Adaptive fault‐tolerant formation control for quadrotors with actuator faults

“…[10] proposed a sliding mode observer(SMO) to recover the pitch rate information. A distributed fault estimation observer (DFEO) design for the multi-agent systems with switching topologies was studied in [11], and a active fault-tolerant scheme for a hypersonic gliding vehicle to conuteract actuator faults and model uncertainties was studied in [12]. In the present study, we focus on the passive FTC problem of a group of quadrotor aircrafts.…”

Adaptive diagnosis and compensation for hypersonic flight vehicle with multisensor faults

“…Fault diagnosis and fault‐tolerant control (FTC) play crucial roles in future control systems to ensure flight safety given the presence of unavoidable faults. Various approaches have been proposed to handle faults theoretically . In the work of Zhang and Yang, a prescribed performance FTC was developed for uncertain nonlinear systems with actuator faults and unknown control directions.…”

“…Various approaches have been proposed to handle faults theoretically. [19][20][21][22][23] In the work of Zhang and Yang, 19 a prescribed performance FTC was developed for uncertain nonlinear systems with actuator faults and unknown control directions. Tao proposed direct adaptive compensation designs for uncertain actuator failures by using actuation redundancy.…”