scholarly journals EXPERIENCES ON THE LOW PRESSURE WATER HYDRAULIC SYSTEMS

1999 ◽  
Vol 1999 (4) ◽  
pp. 357-363 ◽  
Author(s):  
Jussi AALTONEN ◽  
Kari KOSKINEN ◽  
Matti VILENIUS ◽  
Pekka KUNTTU
Keyword(s):  
Low Pressure ◽  
Hydraulic Systems ◽  
Pressure Water ◽  
Water Hydraulic

scholarly journals DYNAMIC CHARACTERISTICS OF LOW-PRESSURE WATER HYDRAULIC SYSTEM

2002 ◽  
Vol 2002 (5-1) ◽  
pp. 161-166
Author(s):  
Yoshihiro Yata ◽  
Takeshi Nakada ◽  
Yasuo Sakurai ◽  
Kazuhiro Tanaka
Keyword(s):  
Dynamic Characteristics ◽  
Hydraulic System ◽  
Low Pressure ◽  
Pressure Water ◽  
Water Hydraulic

Two-Way Solenoid Valves in Low-Pressure Water Hydraulics

2000 ◽  
Author(s):  
Matti O. Linjama ◽  
Jyrki O. Tammisto ◽  
Kari T. Koskinen ◽  
Matti J. Vilenius
Keyword(s):  
Pressure Range ◽  
Position Control ◽  
Hydraulic Cylinder ◽  
Low Pressure ◽  
Weak Point ◽  
Flow Capacity ◽  
Water Hydraulics ◽  
Pressure Water ◽  
Small Flow ◽  
Water Hydraulic

Abstract The paper tests experimentally the suitability of inexpensive directly operated two-way solenoid valves for water hydraulic applications in the pressure range from 10 to 40 bars. Seven valves are tested and tested matters include the steady-state and dynamic characteristics as well as durability. Results show small delays and the durability of about ten million openings. The weak point of the valves is a small flow capacity but otherwise the valves are well suited for low-pressure water hydraulic applications. This is demonstrated by using them in a simple on/off position control of a water hydraulic cylinder.

Analysis of Low Pressure Water Hydraulic drive System with Flexible Long Tube

2002 ◽  
Vol 2002.2 (0) ◽  
pp. 163-164
Author(s):  
Yoshihiro Yata ◽  
Takeshi Nakada ◽  
Yasuo Sakurai ◽  
Kazuhiro Tanaka
Keyword(s):  
Hydraulic Drive ◽  
Low Pressure ◽  
Drive System ◽  
Pressure Water ◽  
Water Hydraulic

Experimental Study on Pressure Transients With Cavitation in Low Pressure Water-Hydraulic Pipeline

2018 ◽  
Author(s):  
Dan Jiang ◽  
Cong Ren ◽  
Qing Guo
Keyword(s):  
High Speed ◽  
Gas Bubbles ◽  
Video Camera ◽  
Low Pressure ◽  
Pressure Pulsations ◽  
Pressure Transients ◽  
Pressure Transducers ◽  
High Speed Video Camera ◽  
Pressure Water ◽  
Water Hydraulic

In this study, pressure transients are triggered by a steel ball, which is released from an upstream reservoir to hit a valve seat and shut off water flow in a horizontal straight copper pipeline. The pressure pulsations, cavitation and gas bubbles growth and collapse in the low pressure water-hydraulic pipeline are recorded by two pressure transducers and a high speed video camera, respectively. In addition, the influences of initial volume of gas bubbles in water and instant leakage in valve are investigated. The experimental results indicate that increasing initial gas bubble volume in water and the instant leakage of the valve will help to reduce magnitudes and numbers of pressure peaks during pressure transients. Then methods to reduce pressure pulsations in pipelines are put forward.

scholarly journals Study on Pressure Transients in Low Pressure Water-Hydraulic Pipelines

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 80561-80569 ◽  
Author(s):  
Dan Jiang ◽  
Qixia Lu ◽  
Yuanming Liu ◽  
Dongdong Zhao
Keyword(s):  
Low Pressure ◽  
Pressure Transients ◽  
Pressure Water ◽  
Water Hydraulic

High-Speed On/Off Position Control of a Low-Pressure Water Hydraulic Cylinder Drive

2002 ◽  
Author(s):  
Matti Linjama ◽  
Harri Sairiala ◽  
Kari T. Koskinen ◽  
Matti Vilenius
Keyword(s):  
High Speed ◽  
Position Control ◽  
Hydraulic Cylinder ◽  
Low Pressure ◽  
Pressure Water ◽  
Water Hydraulic

Proportional Position Control of Low-Pressure Water Hydraulic Cylinder

2002 ◽  
Author(s):  
Harri Sairiala ◽  
Matti Linjama ◽  
Kari T. Koskinen ◽  
Matti Vilenius
Keyword(s):  
Position Control ◽  
Hydraulic Cylinder ◽  
Low Pressure ◽  
Pressure Water ◽  
Water Hydraulic

3112 Development of a Low Pressure Water Hydraulic Planetary Gear Motor

2006 ◽  
Vol 2006.2 (0) ◽  
pp. 327-328 ◽  
Author(s):  
Shigeru OSHIMA ◽  
Tomoyuki SUZUKI ◽  
Yoshihiro OHBAYASHI ◽  
Shinpei MIYAKAWA
Keyword(s):  
Planetary Gear ◽  
Low Pressure ◽  
Pressure Water ◽  
Water Hydraulic

Sliding mode tracking control of a low-pressure water hydraulic cylinder under non-linear friction

2002 ◽  
Vol 216 (5) ◽  
pp. 383-392 ◽  
Author(s):  
S H Cho ◽  
M Linjama ◽  
H Sairiala ◽  
K T Koskinen ◽  
M Vilenius
Keyword(s):  
Tracking Control ◽  
Position Control ◽  
Sliding Mode ◽  
Hydraulic Cylinder ◽  
Low Pressure ◽  
Non Linear ◽  
Linear Friction ◽  
Pressure Water ◽  
Water Hydraulic ◽  
Mode Tracking

This paper deals with a robust motion control of a low-pressure water hydraulic cylinder under non-linear friction. In order to ensure good tracking performance as well as to guarantee robustness, the sliding mode tracking control is utilized in combination with a non-linear friction compensator. Application of the scheme to a low-pressure water hydraulic cylinder position control has led to a significant reduction in tracking error when compared with the perfect tracking control scheme.

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