Abstract
In this paper, kinematics, workspace, and dynamic analysis of a two degree of freedom (2-DOF) translational parallel robot are carried out. The mechanism of the 2-DOF translational parallel robot consists of four links. Links 1 and 2 consist of three revolute joints and link 3 and 4 consist of three revolute joints and one prismatic joint. These four links are attached to the end effector. The inverse kinematics analysis is carried out to find the joint positions for a particular position of the moving platform. Using stiffness and dynamic mass matrices, the natural frequencies of the parallel kinematic machine (PKM) are obtained. Since the first natural frequency is responsible for higher vibrations, the first natural frequency is considered as performance measure of the PKM i.e. global natural frequency index (GNFI). Using GNFI as the objective, the optimal dimensions of the PKM are obtained.
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