Condition monitoring of hydraulic transmission system with variable displacement axial piston pump and fixed displacement motor

Abstract

Electrohydraulic power transmission systems are used in industries, automobiles, mining, aircraft, wind turbine system, machine too etc. To increase safety and reliability, it has become essential to know the health of the system components. So, fault detection of transmission system components has become necessary to reduce maintenance costs and prevent accidents. The leakage based health monitoring of a transmission system with variable displacement axial piston pump and fixed displacement hydraulic motor has been studied. In the present investigation, an axial piston pump of the transmission system has been analyzed for health monitoring. Mathematical modeling of the transmission system has been carried out in details. The wear between piston and cylinder bore has been considered as the primary cause of fault. The deviation of flow characteristic from normal flow due to increased leakage gap has been considered as a parameter for pump health monitoring. The performance of the transmission system has been studied due to variation pump leakage flow due to increase leakage gap. The present investigation has been carried out through a simulation study in Matlab Simulink environment.