Abstract: A general method of the kinematic modelling of biped robots is put forward in this paper. The method is suitable for 2-dimensional biped robots as well as for 3-dimensional biped robots. Using the method, the authors have set up the kinematic model of NAIWR- I biped robot designed by the authors. The obtained result is audio-visual and reasonable. The problems of the inverse kinematic solution and its unique solution are discussed.

Key words: biped robot, kinematic modeling, optimal algorithm