in this paper an energy dissipation rate control (edrc) method is introduced, which could provide stable walking or running gaits for legged robots. this method is realized by developing a semi-analytical pattern generation approach for a robot during each single support phase (ssp). as yet, several control methods based on passive dynamic walking have been proposed by researchers to provide an...

In this thesis, we investigate the question of how a legged robot can walk efficiently, and take advantage of its ability to alter its gait. This work targets the issue of increasing the efficiency of legged vehicles on different challenging terrains. We decompose the problem into three sub-problems: walking gait problem, physical adaptation problem, and terrain identification and gait adaptati...

A fault-tolerant gait planning of a quadruped robot is presented. The considered robot has static walking and suffers from a locked joint failure. Especially, the quadruped robot is equipped with the moving appendage onto the body. By controlling the moving appendage, the robot can adjust the effective position of the center of gravity. Incorporating the adjustment of the moving appendage along...

this paper proposes a gait planning approach to reduce the required friction for a biped robot walking on various surfaces. to this end, a humanoid robot with 18 dof is considered to develop a dynamics model for studying various 3d manoeuvres. then, feasible trajectories are developed to alleviate the fluctuations on the upper body to resemble human-like walking. in order to generate feasible w...

Humanoid robots operating in everyday life environments must generate the gait based on the environmental conditions. Often the gait has to satisfy different objectives. In this paper, we present a new method for humanoid robot gait generation based on multiobjective evolutionary algorithms. In our method, we consider two different conflicting objectives for the humanoid robot gait generation: ...

Generally, it is claimed that hexapod walking robots are superior to others. However, in some conditions hexapod suffers from stability problems. To solve the problem of stability, this paper proposes a new gait model of hexapod robot named offset model and also investigates the effects of morphological factor of hexapod robots on their locomotion. A comparison between the offset model and gene...

This paper describes the application of Particle Swarm Optimization (PSO) for gait optimization on a humanoid robot. The biped gait is modeled by a number of parameterizable trajectories. To achieve omni-directional walking, different sets of gait parameters are optimized for specific walk directions and interpolated later. By using a fitness test based on an acceleration walk, the optimized se...

This paper presents the gait pattern generation work performed for the sixlegged robot EA308 developed in our laboratory. The aim is to achieve a dynamically developing gait pattern generation structure using reinforcement learning. For the six legged robot a simplified simulative model is constructed. The algorithm constructs a radial basis function neural network (RBFNN) to command proper leg...

The inspiration for the footed robot was originally derived from biology, and it an imitation of biological form movement. In this paper, a bionic-robot dog is designed to reveal motion characteristics quadruped mechanism through modeling, model kinematic analysis, other methods. First, structural movement developed bionic-dog are studied. first step study physiological structure dog, analyze f...

This paper reports design, fabrication, and gait planning based on high walk diagonal trot gait pattern of an alligatorinspired robot having eight degrees of freedom. Each leg of the robot described in this paper has two revolute joints representing the hip and knee respectively which are actuated by servo motors. The body of the robot was fabricated on a CO2 laser cutting machine. The 3D leg d...