Passive heave compensation (PHC) system is widely applied in offshore equipment because of its superiority in energy conserving and reliability. However, it has poor adaptability to changing sea conditions and the compensation accuracy is low. Hydraulic transformer (HT), working as a pressure-flow control element, can potentially solve the problems mentioned above. In this paper, an HT based PHC (HTPHC) system is proposed for the first time, and a compensation algorithm based on higher-order sliding mode (HOSM) together with a prediction algorithm for the heave motion of the vessel is derived to get good compensation effect using the new PHC system. The prediction algorithm is proved to be effective according to the measured data of sea trials, and reduces the difficulty of designing and parameter tuning process compared with the existing ones. The effectiveness of the proposed control algorithm is evaluated with simulation, moreover, the effectiveness can still be maintained under changing sea conditions which is also verified by simulation.
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BATH/ASME 2018 Symposium on Fluid Power and Motion Control
September 12–14, 2018
Bath, UK
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-5196-8
PROCEEDINGS PAPER
Predictive Robust Control Based on Higher-Order Sliding Mode for Passive Heave Compensator With Hydraulic Transformer
Jianhua Wei,
Jianhua Wei
Zhejiang University, Hangzhou, China
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Jinhui Fang,
Jinhui Fang
Zhejiang University, Hangzhou, China
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Hangjun Zhang
Hangjun Zhang
Zhejiang University, Hangzhou, China
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Huan Yu
Zhejiang University, Hangzhou, China
Jianhua Wei
Zhejiang University, Hangzhou, China
Jinhui Fang
Zhejiang University, Hangzhou, China
Ge Sun
Zhejiang University, Hangzhou, China
Hangjun Zhang
Zhejiang University, Hangzhou, China
Paper No:
FPMC2018-8835, V001T01A017; 10 pages
Published Online:
November 20, 2018
Citation
Yu, H, Wei, J, Fang, J, Sun, G, & Zhang, H. "Predictive Robust Control Based on Higher-Order Sliding Mode for Passive Heave Compensator With Hydraulic Transformer." Proceedings of the BATH/ASME 2018 Symposium on Fluid Power and Motion Control. BATH/ASME 2018 Symposium on Fluid Power and Motion Control. Bath, UK. September 12–14, 2018. V001T01A017. ASME. https://doi.org/10.1115/FPMC2018-8835
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