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A Simple and Systematic Approach to Assigning Denavit–Hartenberg Parameters

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1 Author(s)

This paper presents a simple and intuitive approach to determining the kinematic parameters of a serial-link robot in Denavit-Hartenberg (DH) notation. Once a manipulator's kinematics is parameterized in this form, a large body of standard algorithms and code implementations for kinematics, dynamics, motion planning, and simulation are available. The proposed method has two parts. The first is the ldquowalk through,rdquo a simple procedure that creates a string of elementary translations and rotations, from the user-defined base coordinate to the end-effector. The second step is an algebraic procedure to manipulate this string into a form that can be factorized as link transforms, which can be represented in standard or modified DH notation. The method allows for an arbitrary base and end-effector coordinate system as well as an arbitrary zero joint angle pose. The algebraic procedure is amenable to computer algebra manipulation and a Java program is available as supplementary downloadable material.

Published in:

IEEE Transactions on Robotics  (Volume:23 ,  Issue: 3 )