We consider the displayed phenomena in the semi-passive dynamic walking of a torso-driven biped robot under the OGY control method as it descends inclined surfaces. The desired torso angle is the accessible control parameter. Analysis of the controlled steady semi-passive gaits are carried out mainly by means of bifurcations diagrams and Poincaré sections as the slope parameter varies. Based on...

We present a qualitative approach to the dynamical control of bipedal walking that allows us to combine the benefits of passive dynamic walkers with the ability to walk on uneven terrain. We demonstrate an online control strategy, synthesizing a stable walking gait along a sequence of irregularly spaced stepping stones. The passive dynamic walking paradigm has begun to establish itself as a use...

There is a growing body of evidence that nonlinear step-to-step variations are related to how the nervous system controls stable locomotion. However, we still have a limited understanding of how the neuromechanical variables of the locomotive system influence the observed nonlinear structure. Reliable models that closely resemble the nonlinear gait dynamics are required to advance our knowledge...

This research realizes and analyze Multi-legged Passive Dynamic Walking(PDW). Although various PDW studies have been conducted based on its interesting features, most of them dealt with bipedal robots. There are many kinds of multi-legged creatures, not only quadrupedal animals but also creatures with more than six legs. In this paper, we focus on a “Multi-legged PDW,” which is a PDW with more ...

Active joint torques are the primary source of power and control in dynamic walking motion. However the amplitude, rate, timing and phasic behavior of the joint torques necessary to achieve a natural and stable performance are difficult to establish. The goal of this study was to demonstrate the feasibility and stable behavior of an actively controlled bipedal walking simulation wherein the nat...