Affiliation:
1. Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, S7N 5A9, Canada
Abstract
A pressure-compensated valve (PC valve) is a type of flow control device that is a combination of a control orifice and a compensator (often called a hydrostat). The compensator orifice modulates its opening to maintain a constant pressure drop across the control orifice. In other words, the PC valve is so designed that the flow rate through the valve is governed only by the opening of the control orifice and is independent of the total pressure drop across the valve. Because of the high nonlinearities associated with this type of valve, it is impossible, in practice, to design such a valve where the flow rate is completely unaffected by the pressure drop across the valve. In this paper, the effect of the nonlinearities on the performance of the PC valve is investigated. First, a generic nonlinear model of a PC valve is developed. Using this model, all possible operating conditions can be determined. Then a linearized model is developed and used to analyze the dynamic behavior of the PC valve. The model can then be used to evaluate and improve the design and operation of the valve for specific applications.
Subject
Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering
Reference11 articles.
1. Flexible Semi-Empirical Models for Hydraulic Flow Control Valves;Handroos;ASME J. Mech. Des.
2. A New Kind of Digital Pressure Compensated Flow Control Valve;Ko
3. Analysis of a Load Sensing Hydraulic Flow Control Valve;Maiti
4. An Investigation Into the Characteristics of a Two Dimensional ‘2D’ Flow Control Valve;Ruan;ASME J. Dyn. Syst., Meas., Control
5. The Design of Pressure Compensators for Load Sensing Hydraulic Systems;Pettersson
Cited by
31 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献