Transition motion from ladder climbing to brachiation for multi-locomotion robot

This paper describes a transition motion from ladder climbing to brachiation for the multi-locomotion robot (MLR). Though the transition motion is as complicated as human doing, the robot shoulder degrees of freedom (only 2 DOFs) are less than human. The paper presents how to make the robot complete complicated motion with limited freedoms. In order to prevent the motors overload, a soft adaption control which can change its style automatically according to the contact situation is used in the turning waist motion for error adjustment. Experimental results show that the MLR realize the transition motion from ladder climbing to brachiation stably and smoothly.