A motion control of flexible joint based on velocity estimation
- 4 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The authors propose a novel control method based on two observers to suppress the vibration of a flexible joint, even under fast motion. One observer is a disturbance observer and is used for the realization of an acceleration controller of the motor axis. The other observer estimates the link velocity and is effective for the suppression of torsional vibration. The disturbance observer estimates the total sum of the disturbance torques which are imposed on the motor axis. Feedback compensation by this estimated disturbance torque increases the servo stiffness and the robustness of the motor portion. The feedback of the estimated link velocity totally suppresses the torsional vibration of the flexible joint even under fast motion. The proposed control was implemented in a 16-b microprocessor with a digital signal processor for a laboratory test.<>Keywords
This publication has 4 references indexed in Scilit:
- A Robust decentralized joint control based on interference estimationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Control of industrial robots with flexible jointsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Robust control and parameter estimation of robots with flexible jointsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Adaptive control of flexible joint manipulatorsSystems & Control Letters, 1989