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In this paper, we develop the lateral motion control based on Passive Dynamic Autonomous Control (PDAC) in order to solve two following problem in previous paper: 1) the step-length control in the sagittal plane results in the delay of one step cycle since walking period is not controlled taking the sagittal control effect into consideration 2) error of the lateral dynamics is big since the effect of the sagittal motion on the lateral dynamics is neglected. At first, the walking period is controlled, by adjusting the amplitude of side-to-side rocking motion. Secondly, the value to lengthen the lateral inverted pendulum is decided according to the sagittal motion effect on it. By means of this new lateral control in addition to sagittal step-length control, the 3-dimensional stable dynamic walking based on the robot inherent dynamics is realized.
Date of Conference: 18-22 April 2005