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A Robust Control Strategy of Redundant Manipulator by Workspace Observer
Naoki Oda, Toshiyuki Murakami, Kouhei Ohnishi
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223 Japan
Received:January 24, 1996Accepted:February 10, 1996Published:June 20, 1996
Keywords:Redundant manipulator, Joint space observer, Workspace observer, Equivalent mass matrix
This paper describes a decoupling force control strategy of redundant manipulator by workspace observer. In general, the calculation process of the redundant manipulator becomes complex as the number of degree-offreedom motion increases because the controller includes the pseudo inverse Jacobian matrix. To alleviate this problem, we develop a simplification method of the inverse kinematics solution including null space calculation by using the transposed Jacobian matrix, and the workspace observer. Here the stable condition of the proposed controller is also presented. Its condition is an important index to construct the stable workspace observer.
Cite this article as:N. Oda, T. Murakami, and K. Ohnishi, “A Robust Control Strategy of Redundant Manipulator by Workspace Observer,” J. Robot. Mechatron., Vol.8 No.3, pp. 235-242, 1996.Data files: