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External Force Disturbance Rejection in Robotic Arms: An Adaptive Approach Mohammad DANESH Farid SHEIKHOLESLAM Mehdi KESHMIRI Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E88-A No.10 pp.2504-2513 Publication Date: 2005/10/01 Online ISSN: DOI: 10.1093/ietfec/e88-a.10.2504 Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and its Applications) Category: Keyword: adaptive control, robotic arm, force estimation, disturbance rejection, Lyapunov direct method, invariant set theorems, Full Text: PDF(1.5MB)>>
Summary: This paper is devoted to the problem of force sensorless disturbance rejection in robot manipulators. In the proposed approach, the control system uses position sensor signals and estimated values of external forces, instead of force sensor signals. The estimation process is performed via an adaptive force estimator. Then the estimated force vector is utilized to compensate for the force disturbance effect in order to achieve a better trajectory tracking performance. The force estimation is carried out directly using no environment model. Asymptotical stability of the proposed control system is analyzed by the invariant set and Lyapunov direct method establishing an appropriate theorem. Finally, the performance of the proposed control system is verified using numerical simulation. | ||||||||||
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