Simulation of Active Heave Compensation System with Optimal Controller based on Dynamic Vibration Absorber for Deepsea Mining System

Li Liujun; Liu Shaojun

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Simulation of Active Heave Compensation System with Optimal Controller based on Dynamic Vibration Absorber for Deepsea Mining System

Li Liujun *,Liu Shaojun

School of Mechanical and Electrical Engineering, Central South University

*Correspondence author

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Funding: 教育部博士点基金,国家自然科学基金（No.20050533001,50675226）

Opened online:16 January 2009

Accepted by: none

Citation: Li Liujun,Liu Shaojun.Simulation of Active Heave Compensation System with Optimal Controller based on Dynamic Vibration Absorber for Deepsea Mining System[OL]. [16 January 2009] http://en.paper.edu.cn/en_releasepaper/content/27937

The heave compensation system is of great importance to the deep-sea mining system subject to irregular wave excitation. A novel active controlled heave compensation system based on dynamic vibration absorber for the deep-sea mining system was proposed in this paper. The two-degree-of-freedom dynamic models of active heave compensation system based on dynamic vibration absorber in simple harmonic wave are established. An optimal regulator controller was designed for the proposed system by using Linear-quadratic optimization technique. The performance of the active heave compensation system based on dynamic-vibrator-absorber was computed and analyzed in time domain. It is indicated that the heave compensator based on dynamic vibrator absorber with the optimal control method can have the best performance of heave compensation and it is practical to isolate the lift pipe and its support platform from the significant vibration of the ship motion induced by the harmonic wave. Therefore, this study can provide a technical reference for the design and manufacture of the actual dynamic vibration absorber for heave compensation system applied in deep-sea mining system in the future.

Keywords:Active Heave Compensation System (AHCS), Dynamic Vibration Absorber (DVA), optimal regulator Control, Deep-sea Mining System (DSM), time domain modeling

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