This paper focuses on the development of a coaxial eight-rotor unmanned aerial vehicle (UAV) with higher drive capability, greater payload capacity, and damage tolerance than a quad-rotor UAV. The dynamical and kinematical model for the coaxial eight-rotor is designed. Considering the yaw movement of the eight-rotor is weaker than the pitch movement and the roll movement, a new variable structure and variable coefficient proportional-integral-derivative (VSVCPID) anti-windup method is proposed as the yaw controller to prevent actuator saturation. VSVCPID method is easily implemented in practical engineering and has a strong robustness with conditional anti-windup. Finally, numerical simulations and prototype experiments indoors and outdoors corroborate that VSVCPID applied to the coaxial eight-rotor has accurate yaw control performance and strong robustness against external disturbances.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.