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This paper presents a kind of method for the inverse kinematics of a seven degrees of freedom (DoF) arm installed on a mobile humanoid robot. Due to the redundancy of 7-DoF open-chain arm, the closed-loop inverse kinematics via pseudoinverse method is used to solve the corresponding joint trajectories if the end-effector trajectory is given. Because of the existence of the null space in the kinematically...
This paper firstly presents a method to formulate the dynamics of the mobile humanoid robot which is composed by the mobile platform and the upper body. As tip-over is an important stable issue for the mobile robot, the dynamic stability constraint is carefully studied to keep the robot stable. Stable support for the robot moving on a plane is solved. With the consideration of the stability problem...
The paper firstly presents a mobile humanoid robot whose upper human-like body is rigidly mounted on the mobile platform with three wheels: two driving wheels and one caster wheel. The wheeled mobile platform moves on the ground subjected to nonholonomic constraints. Then the static equilibrium of the robot on a plane is discussed and tip-over stability of mobile humanoid robot moving on the slope...
This paper first presents a modeling method for a mobile humanoid robot whose upper human-like body is mounted on a mobile platform supported by three wheels (two driving wheels and one caster wheel). The upper body connects the platform by two-DOF joint and the wheeled platform moves on the ground subject to nonholonomic constraints. Then based on Lie groups and screw theory, the kinematics and dynamics...
Many types of mobile humanoid robots combining both the characteristics of mobile robot and humanoid robot have been developed in the literatures in the past two decades. This paper is aimed at presenting a survey of robotic structures for the mobile humanoid robots. The most used ones are wheeled mobile humanoid robots with their salient features of the human-like upper body normally containing two...
When a mobile robot performs some special tasks, such as carrying a heavy load, moving on a slope or rough terrain, particularly contacting with the environment, it may become unstable even overturn. First, the paper presents a mobile humanoid robot whose upper human-like body is mounted on the mobile platform supported by three wheels (two driving wheels and one caster wheel) and subjected to nonholonomic...
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