多自由度を有する垂直多関節型ロボットのコンプライアンスの計測 : 7自由度を有するロボットPA-10への適用(機械力学,計測,自動制御)

概要

論文の詳細を見る
This paper presents a measurement method and its results for a compliance of a vertical-multi-articulated robot. In order to calculate the compliance of a robot, a stiffness of each joint of the robot is required. In this paper, a stiffness of each joint of the robot is measured by using a force/torque sensor and a 3-D motion and position measurement system OPTOTRAK 3020. The proposed measurement method is applied for a 7-DOF robot PA-10 made by MITSUBISHI Heavy Industries, LTD. At first, an 11-DOF link model with 4-virtual joints, i. e. the link model includes virtual 4-DOF, is proposed. Then, a compliance matrix is obtained using a measured stiffness matrix of the PA-10 and a Jacobian matrix of the proposed 11-DOF link model. In order to investigate accuracy of the measured stiffness, and to confirm effectiveness of the measurement method for the stiffness and the proposed link model, experiments measuring the compliance of the PA-10 are conducted. In the experiments, the proposed 11-DOF link model is compared with a 7-DOF link model. Experimental results illustrate that the measured stiffness are accurate, and the measurement method and the proposed link model are effective for calculating the compliance of the PA-10.
社団法人日本機械学会の論文
2003-12-25