Prediction and Optimisation of Audible Noise from Fluid Power Machines
In this study, a transfer function methodology is employed for mapping simulated internal pump dynamics, such as piston forces and bending moments, on to audible noise. Using these transfer functions, it is possible to predict how, for instance, changed valve plate timing affects simulated piston forces and bending moments and in turn how that will affect audible noise. Hence, it is possible to design an objective function that directly reflects audible noise. The transfer functions are experimentally obtained and are valid for a specific machine shell and to some minor extent the rooms acoustical properties. Simulation of the internal pump dynamics, and optimisations, are carried out using a pump model developed in the simulation tool HOPSAN. The design application is a fixed hydraulic machine of bent axis type with seven pistons. The theory outlined and the method proposed in the paper can also be applied to other types of hydraulic machines. The paper shows how different noise reduction features affect the sound pressure level and also motor mode compared to pump mode.
Multi-objective optimisation flow pulsations sound pressure fluid power machines
Liselott Ericson Andreas Johansson Johan (O)lvander Jan-Ove Palmberg
Dep. of Management and Engineering, Link(o)ping Univesity, Sweden Tump and Motor Division, Parker Hannifin AB, Trollh(a)ttan, Sweden
国际会议
杭州
英文
975-980
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）