The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents an adaptive fault-tolerant flight control (FTFC) scheme to counteract actuator stuck failures, where the issues on saturation avoidance of redundant actuators and finite-time adaptation of FTFC are addressed. The “positive $\mu $ -modification” technique and the adjustable reference model are exploited for preventing redundant actuators from saturation or secondary damage. In...
This paper presents a fault-tolerant control (FTC) with integration of neural network (NN) and multivariable sliding mode approaches for an air-breathing hypersonic vehicle (AHV), where both partial loss of effectiveness faults and bias faults in actuators are considered. A radial bias function NN (RBFNN) is derived using on-line updating law to approximate the lumped uncertainties, which consists...
This paper presents a fault-tolerant control (FTC) strategy against actuator malfunctions, with application to formation flight of multiple unmanned aerial vehicles (UAVs). Within the leader-follower context, the FTC mainly consists of the outer-loop control and the inner-loop fault accommodation. The reference commands for the follower UAV are generated by the inner-loop of the follower UAV. The...
This paper investigates fault-tolerant cooperative control (FTCC) of multiple wheeled mobile robots (WMRs) in the presence of severe actuator faults. Initially, a team of robots is moving in pre-defined formation configuration. When actuator faults occur in one or more robots, and the faulty robot(s) cannot complete the mission, the rest of robots start reconfiguring the formation to compensate the...
An adaptive retrofit fault-tolerant control algorithm against actuator faults suitable for flight control applications is developed in this paper which is based on the linear matrix inequalities (LMI) approach and adaptive approach. The algorithm is relatively simple and easy to implement, and assure that the control objective will be achieved despite the presence of the unknown loss of effectiveness...
A model to represent multiple actuator failure cases is developed by polytopic concept. The design of passive fault-tolerant control (FTC) with considerations of both normal and actuator failure cases is investigated, depending on the availability of actuator redundancies. By introducing the parameter dependent Lyapunov and slack methods, an improved algorithm to minimize the peak-to-peak gain of...
This paper proposes a new autonomous robust fault tolerant control system. It combines the advantages of the passive and the active fault tolerant control technologies. The system responses instantly to the failures to guarantee the stability in emergency and eventually obtains the best performance for the faulty system. A robust reliable control example is given to show its function in emergency.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.