DYNAMIC CHARACTERISTICS OF OIL HYDRAULIC PRESSURE CONTROL VALVES
نویسندگان
چکیده
منابع مشابه
Energy-Saving Control of Hydraulic Systems with Novel Programmable Valves
This paper studies the energy-saving adaptive robust motion control of a single-rod hydraulic cylinder through the use of programmable valves—a unique combination of five proportional cartridge valves. The programmable valves decouple the meter-in and meter-out flows and provide true cross port regeneration flow which in turn allows tremendous control flexibility. Although at the expense of con...
متن کاملDynamic Behaviour of Hydraulic Pressure Relief Valve
This paper discusses the influence of the radial clearance of the poppet of the direct spring operated pressure relief valve type DPRS06K315 on the dynamic behaviour of the valve. The mathematical model of the valve has been developed; these mathematical terms have been represented in Matlab/SIMULINK. The results obtained by a simulation describe dynamic behaviour of the valve and its influence...
متن کاملInfluence of Pipeline Operating Pressure on Value Setting of Automatic Control Valves at Different Pressure Drop Rates
When a natural gas pipeline ruptures, the adjacent upstream and downstream automatic control valves (ACV) should close quickly to prevent leakage or explosion. The differential pressure set point (DPS) at each valve location is the main criteria for value setting in ACV actions. If the DPS is not properly adjusted, the ACV may mistakenly close or it may not take any actions at a proper ti...
متن کاملProportional electro-hydraulic valves: from analogue to digital control
Proportional electro-hydraulic valves are ubiquitous as flow actuators in hydraulic systems. Flow regulation is the result of the accurate positioning of a spool driven by a solenoid and a position sensor. The overall control consists of two hierarchical loops: the inner loop is the solenoid current regulator with a closed-loop bandwidth close to 1 kHz. A modelbased digital regulator of this ki...
متن کاملNonlinear Dynamic Modeling and Hysteresis Analysis of Aerospace Hydro - dynamical Control Valves
A new procedure for deriving nonlinear mathematical modeling for a specific class of aerospace hydro - mechanical control valves is presented. The effects of friction on the dynamic behavior of these types of valves along with the experimental verifictions are also given. The modeling approach is based on the combination of the following three tasks: decomposition of the valve into simple speci...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of JSME
سال: 1975
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.18.858