Geared Robot Manipulators with A Jointed Unit: Kinematic Analysis and Its Application
Resource
Journal of Robotic Systems 18 (10): 589-598
Journal
Journal of Robotic Systems
Journal Volume
18
Journal Issue
10
Pages
589-598
Date Issued
2001
Date
2001
Author(s)
Hunag, Yu-Ge
Abstract
An efficient and systematic methodology for the kinematic analysis of geared robot manipulators (GRMs) with a jointed unit is presented. It is shown that, by decomposing mechanical transmission lines of a GRM into serially connected jointed and disjointed units, kinematic relation between local inputs and local outputs of admissible jointed units can be systematically formulated. Accordingly, angular displacements of input links with respect to their associated primary links can be symbolically expressed in terms of joint angles by a unit-by-unit evaluation procedure. This unit-by-unit evaluation procedure provides better kinematic insights into how input torques are transmitted to various joints. It is also shown that an actuator in a GRM with a jointed unit can drive nonconsecutive joints by proper design of its gear train. A 3 degrees of freedom GRM with a jointed unit is used as an illustrative example.
Other Subjects
Actuators; Degrees of freedom (mechanics); Gears; Kinematics; Matrix algebra; Torque; Universal joints; Geared robot manipulator; Jointed unit; Mechanical transmission lines; Manipulators
Type
journal article
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