Practice for determining friction in hydraulic winch systems

Practice for determining friction in hydraulic winch systems

Blog Article

This paper presents a method for estimating friction in hydraulic active heave compensated (AHC) offshore winches.The method is a two-step approach Bodycare set where the first step is to model the friction loss in the hydraulic motors based on data from the sub-supplier.The second step requires real-life testing, where the remaining friction losses in the winch system is identified and modeled.In this context, a practice is characterized by obtaining a friction loss estimation with the highest possible accuracy over the widest possible range of operating conditions with a limited amount of experimental work.The method benefits from the use of parametric models, sub-supplier data, and real-life measurements on a 150 t AHC crane from National Oilwell Varco Norway (NOVN).

The work is an important part of developing a simulation model that can be used actively in virtual testing and verification of crane operations at NOVN.A friction loss model developed from the proposed method was implemented in a NOVN simulation model.Computed and measured hydraulic pressures showed 5 Piece Casual Dining deviations of less than 10% from measured results for a 150 t crane operating in AHC.