Identification of viscous damping coefficient of hydraulic motors

Abstract

This article is about an identification of viscous damping coefficient of hydraulic elements. The viscous damping coefficient is one of the most important diagnostic parameters, influencing the driving characteristics of real devices and the amplitude of mechanic parts oscillation. Thus it influences the working life and the operational reliability too. Viscous damping coefficient is a global diagnostic parameter, which depends on used materials characteristics and on dimensions of the analysed hydraulic element. In this article the analytic relations for the calculation of viscous damping coefficient of hydraulic cylinders will be are derived as will as, the methodology of experimental definition of its numerical value.