Optimum design, simulation and test of a new flow control valve with an electronic actuator for turbine engine fuel control system

2019 ◽  
Vol 65 ◽  
pp. 65-77 ◽  
Author(s):  
Seyfoddin Mojallal Agh ◽  
Jamasb Pirkandi ◽  
Mostafa Mahmoodi ◽  
Mehdi Jahromi
Keyword(s):  
Control System ◽  
Flow Control ◽  
Optimum Design ◽  
Control Valve ◽  
Flow Control Valve ◽  
Engine Fuel ◽  
Turbine Engine ◽  
Electronic Actuator

Modeling and Stability of a Hydraulic Load-Sensing Pump With Investigation of a Hard Nonlinearity in the Pump Displacement Control System

2014 ◽  
Author(s):  
Zachary D. Wagner ◽  
Roger Fales
Keyword(s):  
Control System ◽  
Stability Analysis ◽  
Flow Control ◽  
Control Valve ◽  
Pressure Control ◽  
Flow Control Valve ◽  
Pump System ◽  
Load Sensing ◽  
Pressure Control System ◽  
The Stability

Certain types of Load-sensing (LS) pumps utilize a hydro-mechanical control system designed to regulate the pressure difference, or margin pressure, between the inlet and outlet of a flow control valve. With a constant margin pressure, predictable flow control can be achieved by controlling the orifice area of the flow control valve. In this work, the stability of the pressure control system will be investigated. A combination of linear analysis and nonlinear analysis is employed to assess the stability of a particular LS pump system. Among many nonlinearities present in the hydro-mechanical system, of particular interest is the saturation inherent in the actuator that is used to displace the pump swash plate and the saturation within the 3-way spool valve that permits flow to reach the actuator. This saturation nonlinearity has been isolated from the rest of the system to enable stability analysis. Analysis of model characteristics is used to make conclusions about the stability of the system consisting of interconnected linear and nonlinear portions. The stability analysis is compared to results obtained through a simulation study using a nonlinear model based on first principles.

Design of Rotary-Type Flow Control Valve for Control of Water-Driven Spindle

2010 ◽  
Author(s):  
Yohichi Nakao ◽  
Hajime Niimiya ◽  
Takuya Obayashi
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Flow Control ◽  
Mathematical Models ◽  
Rotational Speed ◽  
Control Valve ◽  
Diamond Turning ◽  
Flow Control Valve ◽  
Type Flow ◽  
Rotary Type

Water-driven spindle was developed for producing small and precise parts by the diamond turning processes. Rotational speed of the spindle can be controlled by the flowrate supplied to the spindle. The paper describes a newly developed rotary-type flow control valve that is designed for controlling rotational speed of the water-driven spindle. In particular, the paper focuses on the establishment of the mathematical model capable of representing the characteristics of the open loop control system composed of the pump, flow control valve and spindle. Mathematical models are then derived so that a feedback control system can be designed using the models. Performances of the flow control valve and the spindle are examined through simulation as well as experiments. It is then verified that the derived mathematical models are capable of representing the performance of the system. In addition, the required positioning accuracy of valve rotation for achieving desired control of the rotational speed of the spindle is considered based on the derived linearized mathematical model.

scholarly journals Parameterized Uncertainty Model Using a Genetic Algorithm With Application to an Electro-Hydraulic Valve Control System

2015 ◽  
Author(s):  
Zuheng Kang ◽  
Bahaa I. Kazem ◽  
Roger C. Fales
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Flow Control ◽  
Robust Stability ◽  
Control Valve ◽  
Flow Control Valve ◽  
Uncertainty Model ◽  
Electrohydraulic Valve ◽  
Valve Control ◽  
Hydraulic Valve

This work proposes a new method of determining a parameterization of an uncertainty model using a genetic algorithm. A genetic algorithm is used in a unique way to solve the non-convex parameterization problem in this work. The methods presented here are demonstrated on an electrohydraulic valve control system problem. This demonstration includes parameterizing an uncertainty class determined from test data for 30 replications of an electrohydraulic flow control valve. The parameterization of the uncertainty is used to analyze the robust stability of a control system for a class of valves.

1203 Development of Air Spring Car-body Tilt Control System using by Proportional Flow Control Valve

2009 ◽  
Vol 2009.18 (0) ◽  
pp. 103-104
Author(s):  
Akiyoshi UEKURA ◽  
Hiroyuki KATO ◽  
Kouji ASANO ◽  
Daisuke SHINAGAWA ◽  
Shoji NEGORO
Keyword(s):  
Control System ◽  
Flow Control ◽  
Control Valve ◽  
Body Tilt ◽  
Flow Control Valve ◽  
Air Spring ◽  
Car Body ◽  
Proportional Flow

A Multi-modes Flow Control Valve for Simplifying the Driving System of Pneumatic Soft Robots

2020 ◽  
pp. 1-1
Author(s):  
Yang Yang ◽  
Yongjian Zhao ◽  
Songyi Zhong ◽  
Yan Peng ◽  
Yi Yang ◽  
...  
Keyword(s):  
Flow Control ◽  
Control Valve ◽  
Flow Control Valve ◽  
Soft Robots ◽  
Driving System

Pattern Recognition Approach to Fault Diagnosis in the DAMADICS Benchmark Flow Control Valve

2003 ◽  
Vol 36 (5) ◽  
pp. 861-866 ◽  
Author(s):  
A. Marciniak ◽  
C.D. Bocăială ◽  
R. Louro ◽  
J. Sa da Costa ◽  
J. Korbicz
Keyword(s):  
Pattern Recognition ◽  
Fault Diagnosis ◽  
Flow Control ◽  
Control Valve ◽  
Flow Control Valve ◽  
Pattern Recognition Approach

Design and evaluation of orifice arrangement for particle-excitation flow control valve

2011 ◽  
Vol 171 (2) ◽  
pp. 283-291 ◽  
Author(s):  
Daisuke Hirooka ◽  
Koichi Suzumori ◽  
Takefumi Kanda
Keyword(s):  
Flow Control ◽  
Control Valve ◽  
Flow Control Valve

Design and Analysis of a Flow-Control Valve With Controllable Pressure Compensation Capability for Mobile Machinery

2021 ◽  
Author(s):  
Bo Wang ◽  
Yunwei Li ◽  
Long Quan ◽  
Lianpeng Xia
Keyword(s):  
Pressure Drop ◽  
Flow Control ◽  
Pressure Difference ◽  
Control Valve ◽  
Flow Control Valve ◽  
Continuous Control ◽  
Small Flow ◽  
Pressure Compensation ◽  
Force Compensation ◽  
Control Accuracy

Abstract There are the problems in the traditional pressure-compensation flow-control valve, such as low flow control accuracy, small flow control difficulty, and limited flow range. For this, a method of continuous control pressure drop Δprated (i.e. the pressure drop across the main throttling orifice) to control flow-control valve flow is proposed. The precise control of small flow is realized by reducing the pressure drop Δprated and the flow range is amplified by increasing pressure drop Δprated. At the same time, it can also compensate the flow force to improve the flow control accuracy by regulating the pressure drop Δprated. In the research, the flow-control valve with controllable pressure compensation capability (FVCP) was designed firstly and theoretically analyzed. Then the sub-model model of PPRV and the joint simulation model of the FVCP were established and verified through experiments. Finally, the continuous control characteristics of pressure drop Δprated, the flow characteristics, and flow force compensation were studied. The research results demonstrate that, compared with the traditional flow-control valve, the designed FVCP can adjust the compensation pressure difference in the range of 0∼3.4 MPa in real-time. And the flow rate can be altered within the range of 44%∼136% of the rated flow. By adjusting the compensation pressure difference to compensate the flow force, the flow control accuracy of the multi-way valve is improved, and the flow force compensation effect is obvious.

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