A Control of Biped Robot which Applies Inverted Pendulum Mode with Virtual Supporting Point

[出版社版](c)2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.We applied the inverted pendulum mode to the control of a biped robot in order to plan a trajectory in real time. Though the inverted pendulum mode is useful to plan a trajectory, the stability margin of a biped robot is very narrow because of its structural limit. Virtual supporting point (VSP), a new indicator of biped robot control, is suggested with a view to broaden the stability margin of biped robot. Walking parameters could be adjusted by setting VSP without changing other parameters. The mobility of a biped robot is improved compared to the usual method if proper VSP is set. The stable range of VSP is figured out by revealing the relationship between ZMP and VSP. Additionally, biped locomotion could be designed simply and its stability could be determined clearly beforehand by applying VSP. Results of the simulation and the experiment shows the validity of the suggested method