This paper studies periodic gaits of quadruped locomotion systems. The purpose is to determine the best set of gait and locomotion variables during walking, for different robot velocities, based on two formulated performance measures. A set of experiments reveals the influence of the gait and locomotion variables upon the proposed indices, namely that the gait and the locomotion parameters shou...

According to bionics and simplified octopus structure, this paper designed a universal mobile quadruped robot and adopted Denavit-Hartenberg system to analyze the single leg kinematics of a robot, obtaining its kinematics equation. Also, through the method of separating variables, this paper solved its inverse kinematics and got the joint angle. A walking gait is planned and the joint angle of ...

Robots are used to climb the stairs for different applications up to now, but the. To overcome this, we have developed an adjustable stair climbing robot to climb.feedback control system for an RF remote-controlled stairclimbing robot. Enter the password to open this PDF file: Cancel OK. File name.which has the capability to climb the stairs easily. Stair climbing is one of the most attractive ...

This paper presents design, construction and control of a quadruped robot, capable to maneuver on vertical surfaces. A nondestructive system integrated with the robot enables location and tracking of rebars in concrete structures. This paper illustrates robot manipulation in the kinematic approach and practical application of the platform dedicated for nondestructive testing. Streszczenie. W ar...

Controlling a quadruped robot is a challenging problem in Robotics. In this report I present an application to get the position and the pose of the Little Dog robot using stereo vision. I built a vision system on top of the Little Dog robot and reconstructed a 3-D terrain model using a stereo camera. Then I aligned sequential 3-D models to get the position and the pose using ICP algorithm. In t...

This paper presents a Genetic Algorithm (GA) approach to evolving robot behaviours. We use fuzzy logic controllers (FLCs) to design robot behaviours. The antecedents of the FLCs are pre-designed, while their consequences are learned using a GA. The Sony quadruped robots are used to evaluate proposed approaches in the robotic football domain. Two behaviours, ball-chasing and position-reaching, a...

Quadrupeds vary their gaits in accordance with their locomotion speed. Such gait transitions exhibit hysteresis. However, the underlying mechanism for this hysteresis remains largely unclear. It has been suggested that gaits correspond to attractors in their dynamics and that gait transitions are non-equilibrium phase transitions that are accompanied by a loss in stability. In the present study...

This paper describes a minimalist mobile robot design approach that offers a high locomotive efficiency, and is therefore well suited to mesoscale robot design. The authors have incorporated this approach into the development of a dynamically controlled piezoelectrically actuated mesoscale robot quadruped. The design described utilizes a lightly damped skeletal structure that generates locomoti...

The biological hypothesis of spinal engine states that the locomotion is mainly achieved by the spine, while legs only serve as assistance. Inspired by this spinal engine hypothesis, a compliant, multi-DOF, biologically inspired spine has been developed and embedded into a quadruped robot without actuation on legs. The experimental results support this spinal engine hypothesis and reveal that t...

Quadrupedal robots working outdoors are very slow robots prone to tumble down in the presence of perturbations. This paper presents a novel gaitadaptation method that enables walking-machine gaits to autonomously adapt to environmental perturbations, including the slope of the terrain, by finding the gait parameters that maximize robot’s dynamic stability. Experiments with the SILO4 quadruped r...