6533b7ddfe1ef96bd127365d

RESEARCH PRODUCT

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

Morten K. BakMichael Rygaard Hansen

subject

Control valvessystem designbandwidthEngineeringBoomlcsh:QA75.5-76.95KnuckleControl theorymedicinebusiness.industrydirectional control valveBandwidth (signal processing)Structural engineeringMotion controlramp timeComputer Science ApplicationsHydraulic cranemedicine.anatomical_structureControl and Systems EngineeringModeling and SimulationControl signalSystems designSubmarine pipelinelcsh:Electronic computers. Computer sciencebusinessSoftware

description

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.

10.4173/mic.2013.4.2http://www.mic-journal.no/PDF/2013/MIC-2013-4-2.pdf