Optimization of Performance Characteristics of Electropneumatic (Two-Stage) Servo Valve

2004 ◽  
Vol 126 (2) ◽  
pp. 416-420 ◽  
Author(s):  
Dr. Igor L. Krivts
Keyword(s):  
Computer Simulation ◽  
Dynamic Characteristics ◽  
Supply Side ◽  
Two Stage ◽  
Exhaust Port ◽  
Static And Dynamic Characteristics ◽  
Servo Valve ◽  
Supply Channel ◽  
Optimal Value ◽  
Power Stage

Servo valve is the key element in electropneumatic servomechanism. In this study, an electropneumatic two-stage servo valves were investigated in order to improve their static and dynamic characteristics. These servo valves consist of a pilot stage and a power stage. The paper discusses three different pilot stages: the jet pipe pilot stage, the supply (side) flapper nozzle pilot stage and the exhaust (side) flapper nozzle pilot stage. The static and dynamic characteristics of the devices were investigated analytically and by computer simulation. For the three pilot stage types it was found that the optimal value of the static and dynamic characteristics could be obtained if the ratio between the effective areas of the supply channel and exhaust port of the pilot stage has a definite value (depending on the pilot stage type).

Static and Dynamic Characteristics of a Two Stage Pilot Relief Valve

1991 ◽  
Vol 113 (2) ◽  
pp. 280-288 ◽  
Author(s):  
Yung C. Shin
Keyword(s):  
Sensitivity Analysis ◽  
Computer Simulation ◽  
Dynamic Characteristics ◽  
Dynamic Equations ◽  
Governing Equations ◽  
Relief Valve ◽  
Two Stage ◽  
Static And Dynamic Characteristics ◽  
Response Characteristics ◽  
Simulation Results

Static and dynamic characteristics of a two stage relief valve have been studied theoretically and experimentally. The governing equations of the valve have been derived and sensitivity analysis was performed by digital computer simulation on the valve response characteristics based on the established dynamic equations of the motions of the valve. From this study, significant parameters on the valve response were identified, which can be modified to improve the dynamic characteristics of the valve. Subsequently, experiments were performed with a specially fabricated Vickers type pilot relief valve. The results showed fair agreement with the simulation results, thus proving the validity of the model.

Multidomain Modeling of Jet Pipe Electro-Hydraulic Servo Valve

2012 ◽  
Vol 233 ◽  
pp. 17-23 ◽  
Author(s):  
Yun Jiang Cheng ◽  
Shu Han Wang ◽  
Xiang Yang Xu ◽  
Wen Yong Li
Keyword(s):  
Flow Control ◽  
Dynamic Characteristics ◽  
Hydraulic System ◽  
High Performance ◽  
Simulation Tool ◽  
Two Stage ◽  
Static And Dynamic Characteristics ◽  
Servo Valve ◽  
Hydraulic Servo

The jet pipe electro-hydraulic servo valve is a typical two-stage flow control servo valve, its static and dynamic characteristics are analyzed in this paper. The interaction of the mechatronic and hydraulic system is considered by multidomain simulation tool, the all key parameters are tunable and this provides the optimal possibility to develop a high-performance jet pipe electro-hydraulic servo valve.

Simulation on Static and Dynamic Characteristics of Servovalve

2012 ◽  
Vol 163 ◽  
pp. 281-285
Author(s):  
Meng Li ◽  
Xu Dong Pan ◽  
Guang Lin Wang ◽  
Bo Yan Song
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristics ◽  
Characteristic Curve ◽  
Secondary Development ◽  
Simulation Environment ◽  
Two Stage ◽  
Characteristic Curves ◽  
Static And Dynamic Characteristics ◽  
Component Design ◽  
Amesim Simulation

In this paper, we build a simulation model of the two stage flapper-nozzle electro hydraulic servovalve with the hydraulic component design libraries and the AMESet secondary development of modeling in AMESim simulation environment. By adjusting the parameters of the model, the performance of the servovalve were analyzed. At the same time, we can get the characteristic curve of the servovalve. These characteristic curves can describe the static and dynamic characteristics of the valve which can greatly guide for the study of the servovalve.

Invited PaperTemperature dependence of SiGe HBT static and dynamic characteristics

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-81-Pr3-86
Author(s):  
F. Aniel ◽  
N. Zerounian ◽  
A. Gruhle ◽  
C. Mähner ◽  
G. Vernet ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
Static And Dynamic Characteristics ◽  
Sige Hbt

Analysis and Optimization of the Static and Dynamic Characteristics of Head Frame

2011 ◽  
Vol 418-420 ◽  
pp. 2055-2059 ◽  
Author(s):  
Yu Lin Wang ◽  
Na Jin ◽  
Kai Liao ◽  
Rui Jin Guo ◽  
Hu Tian Feng
Keyword(s):  
Machine Tool ◽  
Dynamic Characteristics ◽  
Maximum Stress ◽  
Dynamic Performance ◽  
Mode Shapes ◽  
Cnc Machine ◽  
Static And Dynamic Characteristics ◽  
Maximum Deformation ◽  
Improvement Measures ◽  
Optimal Measure

The head frame is a key component which plays a supportive and accommodative role in the spindle system of CNC machine tool. Improving the static and dynamic characteristics has profound significance to the development of machine tool and product performance. The simplified finite element modal is established with ANSYS to carry out the static and modal analysis. The results showed that the maximum deformation of the head frame was 0.0066mm, the maximum stress was 3.94Mpa, the deformation of most region was no more than 0.0007mm, which all verified that the head frame had a good stiffness and deforming resistance; several improvement measures for dynamic performance were also proposed by analyzing the mode shapes, and the 1st order natural frequency increased 7.33% while the head frame mass only increased 1.58% applying the optimal measure, which improved the dynamic characteristics of the head frame effectively.

Modeling and Simulation of Hydromechanically Constant Power Controlled Swash Plate Pumps

2006 ◽  
Author(s):  
Saad A. Kassem ◽  
Yasser H. Anis
Keyword(s):  
Mathematical Models ◽  
Modeling And Simulation ◽  
Dynamic Characteristics ◽  
Theoretical Study ◽  
Constant Power ◽  
Static And Dynamic Characteristics ◽  
Valve Spring ◽  
Lever Arm ◽  
Swash Plate ◽  
Static Performance

This paper presents a theoretical study of the performance of constant power operated swash plate pumps equipped with hydromechanical controllers incorporating either pivoted levers or two feedback springs. Mathematical models of these controllers are derived and used to simulate the static and dynamic characteristics of a small pump of 40 cc/rev geometric volume. Results show that the controller with the pivoted lever renders better static and dynamic characteristics compared to the controllers with feedback springs. Results also show that changing the power through varying the lever arm length is preferable than varying the valve spring initial compression, when the dynamic characteristics of the pumps with controllers of pivoted levers are considered. The effect of the valve spring initial compression on the static performance of a pump incorporating a controller with two feedback springs is also investigated.

Sign in / Sign up

Export Citation Format

Share Document