Robust Fault-Tolerant Formation Maneuver Control for Multiagent Systems With Mismatched Disturbances
Haiqing Wang, Jiuxiang Dong
Abstract
It is a very challenging problem that how to drive a group of agents with actuator faults and matched/mismatched disturbances to achieve collision-free formation maneuvers. Thus, a collision-free robust fault-tolerant formation maneuver control scheme based on leader–follower is studied. First, we plan safe formation trajectories by designing formation maneuver parameters. The continuous trajectories are generated by using polynomial interpolation technique and sent to leaders. Second, we design a robust fault-tolerant affine formation control algorithm for followers with faults and mismatched disturbances. Specifically, the backstepping approach based on “dynamic surface” is employed to tackle mismatched disturbances avoiding the derivatives of virtual control signals. Moreover, the adaptive fault-tolerant mechanism based on “projection operator” is adopted to cope with partial loss-of-effectiveness and bias actuator faults, and the potential singularity of controller gain is effectively avoided. Finally, the corresponding simulations are carried out to validate the effectiveness of the proposed algorithms.