This article provides a uniform fault-tolerant controller for a quadcopter without controller switching in case one rotor fails completely. The fault-tolerant control adopts control allocation based ...

Girls and women with Turner syndrome face a lifelong struggle with both congenital heart disease and acquired cardiovascular conditions. Bicuspid aortic valve is common, and many have left-sided heart ...

This letter presents a novel and retractable ring-shaped quadrotor called Ring-Rotor that can adjust the vehicle's length and width simultaneously. Unlike other morphing quadrotors with high platform ...