UAVs cooperative task assignment and trajectory optimization with safety and time constraints

This paper proposes new methods and strategies for Multi-UAVs cooperative attacks with safety and time constraints in a complex environment. Delaunay triangle is designed to construct a map of the complex flight environment for aerial vehicles. Delaunay-Map, Safe Flight Corridor (SFC), and Relative Safe Flight Corridor (RSFC) are applied to ensure each UAV flight trajectory's safety. By using such techniques, it is possible to avoid the collision with obstacles and collision between UAVs. Bezier-curve is further developed to ensure that multi-UAVs can simultaneously reach the target at the specified time, and the trajectory is within the flight corridor. The trajectory tracking controller is also designed based on model predictive control to track the planned trajectory accurately. The simulation and experiment results are presented to verifying developed strategies of Multi-UAV cooperative attacks.