【摘要】 与其他传统的非完整系统(如轮式机器人和飞行机器人)不同,球形机器人不是链式系统,缺乏有效的轨迹跟踪方法。球形机器人 BHQ-2 可用于无人环境的探测,以该机器人为研究对象,研究了它的动力学轨迹跟踪问题。采用反步法设计了 BHQ-2 机器人的轨迹跟踪控制器,并基于 Lyapunov 稳定性理论证明了该轨迹跟踪控制器的收敛性,最后用数值仿真验证了它的有效性。更多还原

【Abstract】 Spherical robot has good static and dynamic stability, which provides it with strong viability in hostile environment, but the lack of effective control methods has hindered its application and development. This article deals with the dynamic trajectory tracking problem of the spherical robot BHQ-2 designed for unmanned environment exploration. The dynamic model of the spherical robot is established with a simplified Boltzmann-Hamel equation, based on which a trajectory tracking controller is designed by using the back-stepping method. The convergence of the controller is proved with the Lyapunov stability theory. Numerical simulations show that with the con-troller the robot can globally and asymptotically track desired trajectories, both linear and circular.更多还原