Analysis of Construction Machinery Hydraulic Control System

2013 ◽  
Vol 401-403 ◽  
pp. 1590-1595 ◽  
Author(s):  
Li Zhang
Keyword(s):  
Power Control ◽  
Hydraulic System ◽  
Control Mode ◽  
Hydraulic Control ◽  
Hydraulic Power ◽  
Construction Machinery ◽  
Advantages And Disadvantages ◽  
Power And Control ◽  
And Control ◽  
Hydraulic Control System

This article analyses the use requirement of construction machinery, introduce the main features of typical construction machinery hydraulic system, derived power control modes of hydraulic system form hydraulic power form, compares the advantages and disadvantages of each power control mode, gives the optimization solutions, at last, sum up the full text of the construction machinery hydraulic power and control modes and prospect of the hydraulic system to precision control.

scholarly journals Design of a Mechanical Power Circulation Test Rig for a Wind Turbine Gearbox

2020 ◽  
Vol 10 (9) ◽  
pp. 3240
Author(s):  
Geun-Ho Lee ◽  
Young-Jun Park ◽  
Ju-Seok Nam ◽  
Joo-Young Oh ◽  
Jeong-Gil Kim
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Mechanical Power ◽  
Hydraulic Control ◽  
Test Rig ◽  
Wind Turbine Gearbox ◽  
Planetary Gearbox ◽  
Bearing Life ◽  
And Control ◽  
Hydraulic Control System

We developed a mechanical power circulation test rig for a wind turbine gearbox with a power rating of 5.8 MW or less. The test rig consists of an electric motor, two auxiliary gearboxes, a torque-applying device, lubrication systems, cooling systems, and control systems. The torque generating device consists of a planetary gearbox and a hydraulic control system and is used to apply the desired torque to the test gearbox. The hydraulic control system applies the torque on the ring gear of the planetary gearbox. The gears and bearings of the two auxiliary gearboxes and planetary gearboxes met the design criteria for a safety factor of over 1.2 and a bearing life of 30,000 h. In addition, the master and slave gearboxes were connected to the test rig to verify whether the torque-applying device had applied variable torque in real-time during the test. The device was only able to induce a variable torque of up to 45.2 kN-m due to the limitation of the rated torque of the master and slave gearboxes. The test rig can test not only efficiency, vibration, and noise but also durability and overloading.

An Adding Mass Method for Stiffly Mechanical System Simulation and Applications to Construction Machinery

2001 ◽  
Author(s):  
Etsujiro Imanishi ◽  
Satoshi Yonezawa ◽  
Naoki Sugano ◽  
Eiko Hirooka ◽  
Takahiro Kobayashi
Keyword(s):  
Mechanical System ◽  
Dynamic Simulation ◽  
Hydraulic System ◽  
Piecewise Linear ◽  
Hydraulic Systems ◽  
Practical Application ◽  
Construction Machinery ◽  
Linear Elements ◽  
Improvement Method ◽  
And Control

Abstract A characteristic improvement method for dynamic simulation of a stiff mechanical system by adding mass is presented. Hydraulic systems with check valves and control valves on construction machinery exhibit piecewise-linear characteristics for hydraulic flow rate and spool stroke. The proposed improvement method involves no time delay in determining the mass by considering both eigenvalue distortion of the system and time response. This paper shows a practical application to the boom derricking system of a rough terrain crane, and demonstrates that this method is useful for dynamic simulation of hydraulic system including stiff piecewise-linear elements.

The Kinematic and Dynamic Analysis of Hydraulic Control System Based on the Lagrangian Force Method

2018 ◽  
Vol 15 (05) ◽  
pp. 1850041
Author(s):  
Thi-Na Ta ◽  
Cao-Sang Tran ◽  
Yunn-Lin Hwang
Keyword(s):  
Control System ◽  
Dynamic Analysis ◽  
Hydraulic System ◽  
Lagrange Equation ◽  
Control Parameters ◽  
Hydraulic Control ◽  
Hydraulic Systems ◽  
Dynamical Parameters ◽  
Characteristic Effect ◽  
Hydraulic Control System

In this paper, the hydraulic control system design and dynamic analysis are considered in superior calculation efficiency based on Lagrangian method and fundamental laws for getting control algorithms to investigate about hydraulic system how to control hydraulic system and take hydraulic controller to the optimization. The systems built in dynamical parameters are associated hydraulic control system achieved with control parameters. And then, an interface is achieved. The relations between control parameters are obtained. The numerical tools are going to determine all kinematic parameters of bodies such as displacement, velocities, accelerations as well as reaction forces are responded. The AMESim and RecurDyn are used such Computer Aided Engineering (CAE) techniques to solve the numerical examples in this paper. Those examples will imply that the equation of motion based on Euler–Lagrange equation and characteristic effect of force is executable. Through results, we could achieve control improvement at different hydraulic systems.

scholarly journals A Flexible Adjustment and Control System for Hydraulic Machines

10.14311/1576 ◽  
2012 ◽  
Vol 52 (4) ◽  
Author(s):  
Daniel Banyai ◽  
Lucian Marcu
Keyword(s):  
Control System ◽  
Numerical Simulations ◽  
Dynamic Behavior ◽  
Hydraulic Control ◽  
Hydraulic Systems ◽  
Hydraulic Machines ◽  
Variable Displacement ◽  
And Control ◽  
Flow Power ◽  
Hydraulic Control System

Due to the advantages of hydraulic systems with variable displacement, it was necessary to design a control system that can adjust the pressure, flow, power or a combination of these features, that can be easily integrated into the pump body without changing its mechanical construction. The objective of this work was to study the dynamic behavior of this electro-hydraulic control system. To achieve these objectives, first the adjusting system was analyzed by numerical simulations, and then a stand was constructed for testing the performance of these adjustable pumps. It was shown that this control system is superior to existing systems.

Hydraulic power and control system

2020 ◽  
pp. 63-108
Author(s):  
Zlata Jelačić ◽  
Remzo Dedić ◽  
Haris Dindo
Keyword(s):  
Control System ◽  
Hydraulic Power ◽  
Power And Control ◽  
And Control

Design and Analysis of the Low-Speed Hydraulic Control System of 3.15MN Forging Press

2013 ◽  
Vol 690-693 ◽  
pp. 2210-2217
Author(s):  
Yi Bo Li ◽  
Ming Hui Huang ◽  
Qing Pan ◽  
Min Chen
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Hydraulic Press ◽  
System Structure ◽  
Hydraulic Control ◽  
Low Speed ◽  
Hydraulic Theory ◽  
Forging Press ◽  
The Mathematical Model ◽  
Hydraulic Control System

A low speed hydraulic control system applying to 3.15MN forging press isdesigned for isothermal forging processes. Based on the hydraulic theory andthe system structure, both the mathematical model and the simulation model ofthe hydraulic press are established with its features discussed. PID controlmethod is adopted and genetic algorithm is used to automatically tune theparameters of the controller to deal with nonlinearity and time-variant of thecontrolled plant. Co-simulation of the control system and hydraulic system isestablished to verify the feasibility of the design. It is proved by anisothermal forging of a turbine disc that the system has good performances andcan achieve an ultra speed control in the end.

Design and Analysis of Hydraulic Control System for Pipe Storage and Handling System

2011 ◽  
Vol 480-481 ◽  
pp. 1240-1245
Author(s):  
Yu Wang ◽  
Bao Lin Liu ◽  
Yuan Biao Hu
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Hydraulic Pressure ◽  
Hydraulic Control ◽  
Round Trip ◽  
Handling System ◽  
Piston Speed ◽  
Valve Operation ◽  
Hydraulic Control System ◽  
Pipe Joint

This paper research the hydraulic control system of pipe storage and handling system. The pipe storage and handling system (PSHS) is the key parts on rig to handle the drilling pipe and it can improve the efficiency during the drilling works. The hydraulic system of pipe storage and handling system have designed according to automatic round-trip operation in drilling engineering. The mathematical modeling of hydraulic components in PSHS have established and analyzed. The simulation model of hydraulic system of PSHS is also built and simulated to analysis the characteristics of reversal valve operation, Hydraulic pressure adjusting operation, piston speed control and state of accumulator based on the AMESim. The results prove that the operations of pipe storage and handle such as pipe storage, pipe clamping, pipe lifting, pipe transfer and pipe joint can be accomplished drive by hydraulic system. Meanwhile, AMESim have great views to research the geosciences equipment.

Research on Profiling Electro-Hydraulic Control System of Hydraulic Excavator

2013 ◽  
Vol 401-403 ◽  
pp. 1707-1710
Author(s):  
Jie Liang ◽  
Zhi Guang Guan ◽  
Zi Qiang Lv
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
Hydraulic Excavator ◽  
Hydraulic Control ◽  
Construction Machinery ◽  
Intelligent Control System ◽  
Action Model ◽  
Hydraulic Control System

Hydraulic excavator is the important construction machinery. In order to realize the excavator robot intelligent control system from the research on operator's comfort and maneuverability, the paper introduces the establishment of the bucket action model. And at the base of the model, the hardware and software are designed. The experiment shows that the system has the advantage of stability, reliability and strong anti-interference ability.

Design of Hydraulic System of Subsea X-Tree

2012 ◽  
Vol 155-156 ◽  
pp. 540-544
Author(s):  
Hong Lin Zhao ◽  
Jia Yu ◽  
Yuan Long Yue ◽  
Song Li ◽  
Bu Quan Guo
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Production Control ◽  
Control Valve ◽  
Control Model ◽  
Hydraulic Control ◽  
Hydraulic Systems ◽  
Hydraulic Power ◽  
Production Control System

Onshore hydraulic systems are not generally applied in subsea production control system,so how to design a special needed hydraulic system for subsea X-tree has been one of the hot research questions.Several specific hydraulic components were analyzed, such as hydraulic power unite,umbilical,subsea control model,hydraulic control valve and valve actuator, and then corresponding hydraulic schematic which can meet the requirements of subsea X-tree is presented.

Research on Test and Simulation of New Type Steering System for Construction Machinery

2012 ◽  
Vol 241-244 ◽  
pp. 1974-1977
Author(s):  
Li Ying Ma ◽  
Nai Xing Liang ◽  
Yuan Wen Cao ◽  
Shao Xiong Gui
Keyword(s):  
System Simulation ◽  
Steering System ◽  
Testing System ◽  
Hydraulic Control ◽  
Paper Briefly ◽  
Construction Machinery ◽  
Test Platform ◽  
New Type ◽  
Turning Radius ◽  
Hydraulic Control System

This paper briefly analyzed the steering principle and electro-hydraulic control system of four wheel steering (4WS) test platform for construction machinery, and then performed a series of tests in various steering conditions. The experimental data acquisition, processing and analysis were achieved by the testing system so that transfer function of the system has been determined. And then with MATLAB/SIMULINK software the system simulation was given out. The results show that the turning radius of 4WS decreases about 20% than that of traditional two wheel steering (2WS). What’s more, the steering stability of 4WS is greatly improved. The result of this paper has certain theoretical value and good application prospect.

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