Abstract
This paper presents the replication of a desired vibration response by iterative learning control system for a Stewart platform. The Stewart platform is a multi-input, multi-output system with parameter uncertainties including system nonlinearity and joint nonlinearity. Most vehicle manufacturers are relying on road test simulation facilities in order to reduce development time and to enhance product quality. Road simulation algorithm is essential for developing road test simulation system. With digital signal processing technology, more complex control algorithms including iterative learning control can be utilized. In this paper, a controller based on iterative learning control (ILC) algorithm was developed to produce the desired target response in case of a single actuator as the first experiment after programmed with C language. As a next experiment, the control algorithm was implemented in a road test simulation system using a Stewart platform. A real test was carried out to replicate total six channels of acceleration signals measured at top and left side points of audio player system installed to a car running on Belgian road. The convergence rate and test simulation accuracy higher than 90% showed that the algorithm was acceptable to replicate the target vibration response.
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Recommended by Associate Editor Choon Ki Ahn under the direction of Editor Myo Taeg Lim. This work was supported by the Incheon National University Research Grant in 2013.
Byeongsik Ko received his B.S. degree in Korea Aeronautical University in 1984. He also received his M.S. degree in KAIST and Ph.D. degree in UC Berkeley. He is currently a faculty of Inha Technical College. His research interests are vehicle NVH, noise, and vibration control.
Jong W. Park received his Ph.D. degree in Electronic Engineering from Inha University in 1985. He is a professor of Incheon National University. He had been the Director of Incheon Technology Innovation Center from 1999 to 2003. His research interests include robotics and motion estimation of robot vision system.
Dong W. Kim received his Ph.D. degree in Electrical Engineering from Korea University in 2007. He is an associate professor of Inha Technical College. His research interests include robotics, advanced robot design, evolutionary multi-mobile robot system, humanoid robot, soft computing and their application to control.
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Ko, B., Park, JW. & Kim, D.W. A study on iterative learning control for vibration of Stewart platform. Int. J. Control Autom. Syst. 15, 258–266 (2017). https://doi.org/10.1007/s12555-016-0665-7
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DOI: https://doi.org/10.1007/s12555-016-0665-7