This paper concerns on footstep planning of a biped robot in an environment having some obstacles. Biped robot has an advantage to work in human surroundings: This is accomplished by its capability to walk over the obstacles. Though its foot placement should be discussed to step over obstacles, it is difficult because dynamic biped locomotion is a complex interaction system between CoG trajecto...

the focus of studies in the field of passive walking has often been on straight walking, while less attention has been paid to the field of turning motions. in this paper, the passive motions of a finite width rimless wheel as the simplest 3d model of passive biped walkers was investigated with a focus on turning motions. for this purpose, the hybrid model of the system consisting of continuous...

This work presents a novel gait generation method for biped hopping with point feet. The investigated biped model consists of a kneed massless leg and a trunk with two Hill-type muscles at the hip and knee joints. The dynamic equations of the system are derived using Lagrange method. Since the most important phase to stabilize bipedal running and hopping motion is stance phase, this paper deals...

This paper deals with a new up-stair motion planning algorithm for a biped robot. The whole body of the humanoid can be visualized as a kinematically redundant robot, where the number of joints are more that the required degree of freedom. Based on the ZMP constraint equation, a sequential redundancy resolution algorithm is proposed, which ensures the ZMP trajectory, the planned operational mot...

This paper considers the design and evaluation of stabilising controllers for a twelve degree of freedom biped robot using linear quadratic optimal control techniques and reduced order observers. The controllers are designed using approximate planar dynamical models for the sagittal and lateral planes. Experiments were carried out to test the control system when the biped robot was in the doubl...

This paper deals with the design of a control strategy that combines a nonlinear observer and a partial feedback linearization controller to stabilize the periodic orbits of an under-actuated three link biped robot. We show first that passive dynamics (non-actuated coordinates) can be linearized and decoupled from the rest of the system by applying a nonlinear feedback. Then, the proposed obser...

This paper presents the main simulation and experimental results from studies of the robustness of a proposed new control strategy for the under-actuated robot RABBIT. The disturbances studied include modifications of the characteristics of the foot/ground interaction and the application of external forces to the trunk of the robot. These two kinds of disturbance correspond to those most freque...

In this paper we present a humanoid robot, HRP-2P, which can walk, lie down and get up. We believe that HRP-2P (154 cm height and 58 kg weight) is the first humanoid robot that is the size of a human and can lie down and get up. Biped walking is realized by a walking pattern generator using a preview control and a feedback control. The lying down and getting up motions were made possible by HRP...

A efficient biped robot balance control is essential to achieve dynamic walk. In this work we propose a incremental fuzzy algorithm to control the lateral plane movements for a biped robot. This algorithm is computationally more economic as an adaptive control algorithm. This algorithm demonstrate a smooth balance control response and a correct interaction between the walking algorithm and the ...