Controller Design and Global Stability Analysis of Acrobot
Acrobot控制器设计与全局稳定性分析

This paper presents a controller design and global stability analysis of acrobots based on non-smooth Lyapunov functions. Three control laws that are derived based on three Lyapunov functions are applied successively to achieve a suitable posture and increase the energy so as to stabilize the acrobot at an unstable inverted equilibrium position. LaSalle invariant theorem and non-smooth Lyapunov function are employed to theoretically guarantee the stability of the acrobot in the whole motion space. Simulation results have demonstrated the validity of this strategy.