The Swashplate Angle Control of a Variable Displacement Pump with an Electro-Hydraulic Proportional Valve
In this paper, the mathematic model of the swashplate type variable displacement axial piston pump (VDAPP) is established. The VDAPP applied to an electro-hydraulic servo control system usually induces unstable performance, so that a servo controller is designed and analyzed to control the swashplate angular displacement and improve the stability and transient response of pump performance. The flow and pressure variations of pump with the proposed controller are investigated and analyzed by mathematic simulations and experiments. The simulation and experiment results show that the proposed controller can improve the stability of swashplate angular displacement, and easily applied to the energy saving hydraulic systems.
Sheng-Jye Hwang and Sen-Yung Lee
M. H. Chu et al., "The Swashplate Angle Control of a Variable Displacement Pump with an Electro-Hydraulic Proportional Valve", Materials Science Forum, Vol. 594, pp. 389-400, 2008