Joint torque control for the pneumatically robotic manipulator with 3 degrees of freedom

被引：4

作者：

Mao, Xintao ^{[1
]}

Bao, Gang ^{[1
]}

Yang, Qingjun ^{[1
]}

Wang, Zuwen ^{[2
]}

机构：

[1] SMC Pneumatic Center, Harbin Institute of Technology

[2] Electromechanics and Materials Engineering College, Dalian Maritime University

来源：

Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering | 2008年 / 44卷 / 12期

关键词：

Dynamics model; Feed forward compensation; Linearization; Pole assignment; Trajectory tracking;

D O I：

10.3901/JME.2008.12.254

中图分类号：

学科分类号：

摘要：

Pneumatically robotic manipulator with 3 degrees of freedom belongs to serial mechanisms. During the movement of robotic manipulator, parameters such as rotation inertia, gravity torque and coupling torque between joints change greatly, which affects the motion precision of robotic manipulator. In order to solve the problems, dynamic analysis of manipulator's three joints are carried out by using Lagrange equation. The waist joint is taken as an example to illustrate design of controller for joint. Through linearizing the mathematical model of power mechanism, the method of state feedback pole-assignment is applicable to the design of controller. The result shows that the single joint controller is robust, but there is certain static error. The error is mainly caused by the influence of disturbance torque. Dynamic compensation as the feed forward compensation for single joint controller is obtained by calculating single joint trajectory planning based on dynamic model. The experiment shows that the method is effective and improves the precision of the trajectory tracking.

引用

页码：254 / 260

页数：6

共 10 条

[1]

Bobrow J.E., McDonell B.W., Modeling, identification, and control of pneumatically actuated robot, Proceedings of the 1997 IEEE International Conference on Robotics and Automation, ICRA. Part 1 (of 4), pp. 124-129, (1997)

[2]

Yang Q., Bao G., Nie B., Et al., Modeling of pneumatic cylinder controlled by electronic proportional directional valve, Journal of Harbin Institute of Technology, 33, 4, pp. 495-498, (2001)

[3]

Bo Y., Li X., Dual-loop control strategy with friction compensation for pneumatic rotary actuator position servo system, Journal of Nanjing University of Science and Technology, 30, 2, pp. 216-222, (2006)

[4]

Ling W., A study on control in arthritis of pneumatic robot of six degrees of freedom, (2002)

[5]

Cai Z., Robotics, (2000)

[6]

Duan G., Linear System Theory, (1996)

[7]

Duan S., Wang M., Jia Z., Et al., Sliding mode robust control with feed forward compensator for robot manipulator, Journal of Taiyuan Heavy Machinery Institute, 20, 2, pp. 95-99, (1999)

[8]

Chen B., Mo B., Cao F., Approach to feed-forward adaptive control for variable pump and valve controlled electro-hydraulic system, Chinese Journal of Mechanical Engineering, 42, 3, pp. 217-220, (2006)

[9]

Santibanez V., Kelly R., PD control with feedfor-ward compensation for robot manipulators: Analysis and experimentation, Robotica, 19, 1, pp. 11-19, (2001)

[10]

Goldenberg A.A., Rakhsha F., Feedforward control of a single-link flexible robot, Mechanism and Machine Theory, 21, 4, pp. 325-335, (1986)

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