Energy Dissipation Rate Control for Planar Biped Walking Robot Based on the Property of Passive Dynamic Walking

Several control methods based on passive dynamic walking have been proposed by researchers to provide an efficient human-like biped walking robot. For most of these passive based controllers the main idea is to shape the robot's energy level during each Single Support Phase (SSP) to restore the mechanical energy which has been lost in the previous Impact Phases (1P). In this paper, instead of controlling the energy restoration rate during each SSP, a new strategy is introduced which provides a stable walking by controlling the energy dissipation rate during each IP. Subsequently, this method is applied to an anti-trunk biped robot with lockable knee joints to realize an active dynamic walking on level ground. Simulation results show, the proposed method is effective.