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This paper investigates simultaneous fault detection and model-reference consensus control of multi-agent systems with reduced-order observers under the directed topology. A reduced-order observer based on the relative output information is designed, based on which the fault detection task is accomplished. By reconfiguring the observer matrices and designing the adaptive law to estimate the sensor...
Finite-time output consensus tracking problem of n-order multi-agent systems (MAS) with matched and unmatched disturbances is investigated in this study. First, a distributed protocol is given for the nominal MAS to achieve finite-time consensus tracking. Second, the unmatched disturbances in every follower are converted to the matched ones through a state transformation, and a finite-time disturbance...
This paper proposes a novel sensorless speed tracking control scheme for the permanent magnet synchronous motors (PMSM) with uncertain parameters. An angular speed observer is designed to achieve the purpose of sensorless speed estimation, and then a speed tracking controller is developed with the adaptive backstepping technique to deal with the parameter uncertainties and load variation in the PMSM...
In this work, a switched control law is proposed to make the desired set point of an underactuated surface vessel finite-time stabilization. The control law is separated into three actions. Each action makes the system have a double integrator subsystem and we use a finite-time controller to achieve a certain objective. In order to overcome the difficulties of measuring the linear and angular velocities...
In this paper, an adaptive observer approach is developed to detect and isolate aircraft actuator faults. Particularly, the fault of actuator locked in place is considered. In a multiple-model scheme, a bank of parallel observers are constructed, each of which is based on a model that describes the system in the presence of a particular actuator fault. The observers are designed by eigenstructure...
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