Dynamic Characteristics of The DSI-Type Constant-Flow Valves

Abstract

Constant flow valves have been presented in industrial applications or academic studies, which compensate recess pressures of a hydrostatic bearing to resist load fluctuating. The flow rate of constant-flow valves can be constant in spite of the pressure changes in recesses, however the design parameters must be specified. This paper analyzes the dynamic responses of DSI-type constant-flow valves that is designed as double pistons on both ends of a spool with single feedback of working pressure and regulating restriction at inlet. In this study the static analysis presents the specific relationships among design parameters for constant flow rate and the dynamic analyses give the variations around the constant flow rate as the working pressure fluctuates.

Dynamic Characteristics of The Spool-Type Constant-Flow Valves

“…Kang et al (6) presented the specific requirements of constant flow rate for various type designs. Kang et al (7) utilized Runge-Kutta method to investigate the dynamic responses of DSI types constant-flow valves as working pressure fluctuating. This study uses the same method to simulate the dynamic responses of spool-type constant-flow valves.…”