Digital Simulation of a Pilot-type Relief Valve

유압용 파이롯트형 릴리프밸브의 시뮤레시숀 연구

The dynamic chracteristics of a two stage relief valve is studied theoretically and experimentally. The equations of motion of spools are derived and solved by digital compter simulation to find the stiability criteria.It is shown that the area of main spool head gives damping effect to the system and that the flow pressure-coefficient of the orifice in main spool is one of the most important parameters to determine stability and response. The experimental resuls are in good atreement with the theoretical results.