Analysis of Offshore Knuckle Boom Crane - Part Two: Motion Control

In this paper design of electro-hydraulic motion control systems for offshore knuckle boom cranes is discussed. The influence of the control valve bandwidth along with the ramp time for the control signal are investigated both analytically with simplified system models and numerically with an experi...

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Bibliographic Details
Published inModeling, identification and control Vol. 34; no. 4; pp. 175 - 181
Main Authors Bak, Morten K., Hansen, Michael R.
Format Journal Article
LanguageEnglish
Published Kristiansand Norsk Forening for Automatisering (NFA) 01.01.2013
Norwegian Society of Automatic Control
Subjects
bandwidth
directional control valve
Hydraulic crane
ramp time
system design
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Summary:In this paper design of electro-hydraulic motion control systems for offshore knuckle boom cranes is discussed. The influence of the control valve bandwidth along with the ramp time for the control signal are investigated both analytically with simplified system models and numerically with an experimentally verified crane model. The results of both types of investigations are related to general design rules for selection of control valves and ramp times and the relevance of these design rules is discussed. Generally, they are useful but may be too conservative for offshore knuckle boom cranes. However, as demonstrated in the paper, the only proper way to determine this is to evaluate the motion control system design by means of simulation.
ISSN:0332-7353
1890-1328
DOI:10.4173/mic.2013.4.2