During the course of modeling , a special lagrangian method is adopted , this method make it convenient for controlling and programming . the principium of the method is that the dynamical matrix and correlative matrix are formed by using a iterative algorithm , the algorithm has very high efficiency during programming , especially for solving complicated dynamical equation . based on the result , walk strategy and the mechanics condition for steady dynamic - walk for besiding is obtained 為了使建立的模型利于計算機控制和編程計算,文章采用了一種遞推的newton - euler方法來建立機器人的力學模型,這種方法的特點是利用遞推計算的辦法來形成力學方程中動力矩陣和關聯(lián)矩陣的元素,這就使得非常復雜的動力學方程在編程計算的時候顯得非常簡潔、有效,在這個基礎上,文章對步行策略進行了設計,并得到了實現(xiàn)穩(wěn)定的動態(tài)行走所必須滿足的力學條件。