139 Abstract— A self-collision algorithm of two arms has been developed for a developed dual arm robot manipulator. Because the developed dual arm robot is supposed to do a job of complex task which needs cooperative motion of two arms. In this complex task, self-collision of two arms can occur. In this paper, developed self-collision avoidance algorithm to prevent the limbs of the dual arm rob...

This paper presents a novel approach for controlling electrically driven robot manipulators based on voltage control. The voltage-based control is preferred comparing to torque-based control. This approach is robust in the presence of manipulator uncertainties since it is free of the manipulator model. The control law is very simple, fast response, efficient, robust, and can be used for high-sp...

In this paper, a method for solving forward and inverse kinematics of redundant manipulator is proposed. Obtaining the joint variables of these manipulators from a desired position of the robot end-effector called as inverse kinematics (IK), is one of the most important problems in robot kinematics and control. The difficulties in solving the IK equations of these redundant robot manipulator ar...

A mobile manipulator is a robotic arm mounted on a mobile robot; a particular example is a manipulator arm on a mobile robot with differential traction. Mobile manipulators have many advantages over stationary manipulator, such as a larger work space than a stationary manipulator could have in practice. This paper shows a systematic approach to modeling mobile manipulators that transforms the p...

This paper presents a path planning technique for a mobile manipulator whose end-effector path is imposed by a given task. The planning is done decoupling the kinematics of the mobile platform and the manipulator, and planning for the former as a normal mobile robot. Two criteria for planning the path were implemented, one minimizing the need to turn the mobile robot and the other minimizing th...

This paper describes the application of behaviour-based control for a mobile manipulation task. It presents a preliminary result in the research into a ‘task-robust’ controller for a service robot, needed when a robot is used in a human-centred environment. The chosen benchmark task is the co-operative carrying of a long object by a mobile manipulator and a human. The human will guide the task,...

A new type of backbone robot is presented in this paper. The core idea is to use a cross shape mechanism with the principle of functioning of the scissors linkages, known as a pantograph. Although this continuum arm acts quite similar to tendon-driven robot, this manipulator does not include any tendon in its structure. This design does not suffer from the weaknesses of the continuum design suc...

The robot manipulator joint actuator dynamics and the payload variation are major factors that severely affect the overall dynamics and hence the tracking performance of the direct drives manipulator. This paper proposes a robust and computationally simple approach aimed at compensating the tracking error due to model uncertainty, actuator dynamics, and payload variation for the inverse dynamic...

In this paper, a nonlinear adaptive neural network tracking control with a guaranteed H∞ performance is proposed for a constrained robot manipulator with plant uncertainties. The neural network is used to learn the unknown dynamics by an adaptive algorithm. Moreover, a force sensor is built to measure the forces and torques between the experimental robot UArm II end-effector and the environment...

The energy efficiency of a robotic manipulator is important, particularly when that manipulator is used in conjunction with a mobile robot with limited battery life. In this paper the energy efficiency (in terms of the electrical energy usage) of a spatial three DOF parallel manipulator is compared to a serial manipulator with the same drive motors and a similar workspace. The effects of endeff...