Title of Dissertation: A THREE DEGREE OF FREEDOM PARALLEL MANIPULATOR WITH ONLY TRANSLATIONAL DEGREES OF FREEDOM Richard Eugene Stamper, Doctor of Philosophy, 1997 Dissertation directed by: Professor Lung-Wen Tsai Department of Mechanical Engineering and Institute for Systems Research In this dissertation, a novel parallel manipulator is investigated. The manipulator has three degrees of freedo...

Generally, in most dexterous manipulation tasks the manipulator undergoes a transition from free motion to contact connguration with its environment. An example can be the exploratory unconstrained motions of the force guided manipulator for establishing contact with an environment. This transition usually involves the impact stage. The impact usually results in an unstable performance of the c...

This paper presents a kinematic analysis of a parallel manipulator we have been developing for the probing task application that requires high bandwidth, active compliance, and high precision. Based on the concept of macro/micro manipulators, the parallel manipulator serves as a wrist of a macro manipulator. The developed manipulator is a class of in-parallel platforms with 3 PRPS( prismatic-re...

Abstract In this paper, a 5-DOF manipulator is designed to carry the pipeline robot. The joint coordinate system and connecting rod parameters of are confirmed by D-H method, kinematics model established. position direction end deduced using homogeneous transformation method. Monte Carlo method used solve workspace manipulator, MATLAB draw cloud map. Set motion trajectory space planning, throug...

In this paper, we experimentally tested the positioning repeatability of MR-compatible manipulator with a CCD laser micrometer inside MRI. To evaluate the performance of MR-compatible manipulator inside MRI, the measuring system must be confirmed to work correctly inside MRI in advance. Therefore, the measuring system was tested to see if it can measure a specimen similarly regardless to inside...

This paper presents an algorithm that solves the inverse kinematics problem of all six degrees of freedom manipulators, "general" or "special". A manipulator is represented by a chain of characters that symbolizes the position of prismatic and revolute joints in the manipulator and the special geometry that may exist between its joint axes. One form of the loop closure equation is chosen and th...

In this paper we develop framework for PID stabilization of a robot manipulator when using an object independently or in collaboration with a human arm. Inboth applications, the manipulator is equipped with a wrist sensor represented by an impedance. A second order manipulator transfer function along each coordinate direction is assumed. The aim of the paper is to design a PID controller when m...

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...

The load capacity of a manipulator depends on a load capacity of a joint or load capacities of some joints of the manipulator. Even if a manipulator could not handle an object because of its load capacity, some of its joints still have enough capabilities for the handling of the object. In this paper, we proposed a method to handle an object using available joints of the manipulators by introdu...

An invention of a new and novel space robotic manipulator is described. By using a combination of lightweight truss links, a novel hinge joint, tendon-articulation and passive tension stiffening, this new robotic manipulator architecture achieves compact packaging, high strength, stiffness and dexterity while being very lightweight compared to conventional manipulators. The manipulator is also ...