Abstract
The concept of continuous mining for manganese nodules suggests three sub-operations in total mining: collecting, lifting, onboard treatment. The combination of three components could be shaped by self-propelled seafloor mining robot, flexible conduit and buffer, lifting pumps and pipe, and mining platform. Particularly, the self-propelled robot tracking the mining paths on the seafloor is the key to accomplish the continuous mining. This paper discusses track velocity control of remotely operated mining robot, which is a basic and indispensable requirement for path tracking. The track velocity control is realized by PI controller from gain tuning formulas based on the model identification. First, to investigate the nature of the tracking system, a laboratory test is executed with the robot hung in air by overhead crane. Next, the transfer function of the tracking system is identified by the open-loop response and the closed-loop response. Through familiar tuning formulas based on the identified system parameters, PI gains are tuned. Finally, among the tuned PI gains, the one of best performance is set as the track velocity controller.
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Recommended by Associate Editor Sangyoon Lee
Suk Min Yoon received the B.Sc. and the M.Sc. degrees in the Department of Mechanical Engineering and Mechatronics Engineering, respectively, and he is a D.Sc student in Mechatronics Engineering from Pukyong National University, Korea. Currently, he is a researcher at KIOST (Korea Institute of Ocean Science & Technology), Korea. His fields of interest are autonomous mobile robots and multi-robot systems.
Tae Kyeong Yeu received the B.Sc. and the M.Sc. degrees in the Department of Mechanical Engineering from Pukyong National University, Korea, and the Doctor of Engineering degree in System and Information Science from Kumamoto University, Japan. Currently, he is a senior researcher at KIOST (Korea Institute of Ocean Science & Technology), Korea. His main research areas are underwater robots and the development of marine mineral resources.
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Yoon, SM., Hong, S., Park, SJ. et al. Track velocity control of crawler type underwater mining robot through shallow-water test. J Mech Sci Technol 26, 3291–3298 (2012). https://doi.org/10.1007/s12206-012-0810-2
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DOI: https://doi.org/10.1007/s12206-012-0810-2