The aim of the scientific contribution is simulating load gear hydraulic pump used in agricultural machinery laboratory conditions, where impact ecological transmission-hydraulic fluid on life limit (flow and efficiency) GHD1-17R monitored. Laboratory test equipment was for simulation. to perform monitor changes physicochemical energy carriers. simulation conditions took 500 hours. Vickers 100 ...

A general framework of hydraulic fault diagnosis system was studied. It consisted of equipment knowledge bases, real-time databases, fusion reasoning module, knowledge acquisition module and so on. A tree-structure model of fault knowledge was established. Fault nodes knowledge was encapsulated by object-oriented technique. Complete knowledge bases were made including fault bases and diagnosis ...

This paper introduces the statistical error modeling approach for a computercontrolled large-scale manipulator (LSM). The LSM is sufficiently representative of several types of construction equipment to be able to serve as a general test bed. In the analysis, three factors which are measurable in real time: distance, hydraulic pressure, and payload, were varied to determine their influence on p...

Hydraulic systems, as power source and transmission, offer many advantages over electromechanical or purely mechanical counterparts in terms of power density, flexibility and portability. Many hydraulic systems require touching and contacting the physical environments; and many of these systems are directly controlled by human. If hydraulic systems are passive, they would be safer to interact w...

Hydraulic shock that occurs in pipeline systems can cause accidents and destroy pipelines, valves equipment. If the pressure fluctuates due to a hydraulic shock, rarefaction phase may drop below of saturated vapours, resulting cavitation. This phenomenon is accompanied by an additional increase amplitude fluctuation, which leads loads occurring system. The aim paper provide method for calculati...

The framework of this study is computerassisted control of hydraulic actuated mobile machinery, such as mining manipulators and earth moving equipment. The design of both methods is treated and experimental results are presented. Several criteria for comparison are detailed to assist in a rational decision making process. In this paper, two different approaches have been taken in an attempt to ...

The alternating impact machine with high temperature and pressure resistance is a kind of equipment to make the fatigue experiment for rubber pipe in the auto industry. This article mainly introduces the work principle and the design of hydraulic pressure system and temperature control system of the alternating impact machine. This system uses Siemens S7-200 Programmable Logic Controller (PLC) ...

The effectiveness of maintenance and repairs hydropower equipment largely determines the environmental safety reliability operation modern hydroelectric power plants. article proposes a new approach to planning hydraulic equipment. task is determine sequence control actions system equipment, which, at minimum cost, will ensure given level technical condition fleet this plant for specified perio...