Paper Title:
Design Analysis of Water Hydraulic Digital Valve
  Abstract

Lubrication and sealing are the key research points in water hydraulic technology. A better seal is provided by the structure form of the poppet valve comparing to the spool valve, however, poorer linearity and control accuracy accompanies inevitably. Aiming at improving the control performance of poppet valves, the design of the water hydraulic digital valve is analyzed in this paper. A high speed digital valve is designed and controlled by PWM (Pulse-Width Modulation) and actuated by a piezoelectric ceramic stack with high frequency response and control stiffness. Another new design using poppet valves for digital bits is proposed to ensure enough seal ability and lower the cost of the valve, namely the multi-digit on-off valve. The simulation models of these two types of valves are built and the results show the different performances between the valves. The high speed digital valve is provided with high control accuracy and responsiveness. In contrast, large overshoot and oscillation are encountered during switching on the digits of the multi-digit on-off valve. Especially the switching process of the high digital bits requires to be regulated to reduce the large overshoot. The above analysis contributes to the improvement of lubrication and sealing in water hydraulic control valves and applications of water hydraulics in the industry.

  Info
Periodical
Chapter
Chapter 1: Product Design and Development
Edited by
Di Zheng, Yiqiang Wang, Yi-Min Deng, Aibing Yu and Weihua Li
Pages
148-153
DOI
10.4028/www.scientific.net/AMM.101-102.148
Citation
Z. M. Zhang, Y. J. Gong, "Design Analysis of Water Hydraulic Digital Valve", Applied Mechanics and Materials, Vols. 101-102, pp. 148-153, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xin Hua Wang, Jian Zheng, Wei Li, Shu Wen Sun
Abstract:Because of the difference between oil and water in physical and chemical properties, research on the design method of water hydraulic slide...
1279
Authors: Xin Hua Wang, Jia Qing Chang, Shu Wen Sun, Gang Zheng
Abstract:An analysis has been conducted on the hydraulic bridge of the water hydraulic servo valve with annular clearance between sleeve and spool...
305
Authors: Xiao Fei Xiang, Zhe Wang, Fei Zhang, Li Zhao
Abstract:Active disturbance rejection controller (ADRC) instead of the conventional PID controller in the hydraulic position control system is...
114
Authors: Guang Fu Chen, Xiao Xian Yao, Si Bao Li
Chapter 8: Hydrology and Water Resources, Management Applications
Abstract:The traditional valve control hydraulic systems have serious challenges in the harsh environment underground. The mathematical model of this...
1995