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.

Simulation and Fuzzy Control Study on the CVT Metal V Belt Axial Misalignment of Car

2010 ◽  
Vol 426-427 ◽  
pp. 97-101 ◽  
Author(s):  
Fa Ye Zang
Keyword(s):  
Control System ◽  
Fuzzy Controller ◽  
Dynamic Performance ◽  
Stable State ◽  
Hydraulic Control ◽  
Pid Algorithm ◽  
System A ◽  
Working Situation ◽  
The Mathematical Model ◽  
Hydraulic Control System

Based on the analysis of the belt misalignment of the metal V belt CVT, the reason of the belt misalignment has been discussed. In order to control the misalignment, an electro-hydraulic control system has been designed. After deeply analyzing the structure and principle of the electro-hydraulic control system, the mathematical model of the electro-hydraulic control system has been established. Being varieties of the working situation of car and the non-linearity of the electro-hydraulic control system, A Fuzzy PID algorithm has been designed. Then the simulation of the belt misalignment has been conducted, and the simulation results show that the electro-hydraulic control system and the fuzzy controller could not only control ratio, which had a higher accuracy of the stable state and a stronger robust of the driving condition, but also eliminated the belt misalignment, improved the dynamic performance of the metal V belt CVT.

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.

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.

Study on High Dynamic Variable Speed Hydraulic Control System

2012 ◽  
Vol 271-272 ◽  
pp. 625-631 ◽  
Author(s):  
Hai Kuo Shen ◽  
Meng Nie ◽  
Shao Dan Zhi ◽  
Jin Bo
Keyword(s):  
Control System ◽  
Dynamic Response ◽  
Speed Control ◽  
Hydraulic Control ◽  
Variable Speed ◽  
Dynamic Variable ◽  
Low Speed ◽  
Control Precision ◽  
High Dynamic ◽  
Hydraulic Control System

A new type of high dynamic variable speed hydraulic control system is developed in this paper. In this system, a fixed displacement hydraulic pump is driven by an electrical motor which is controlled by a frequency inverter, so the discharge of the pump can be modified by changing the speed of the motor. A proportional directional valve is used to acquire higher low-speed control precision and faster dynamic response while the system is decelerating. In order to improve the dynamic response while the system is accelerating, an energy regulation device is employed in the system. The digital simulation results show that this system has higher efficiency than valve control system. Further more it has faster dynamic response and higher low-speed control precision than normal variable speed hydraulic control system.

Hydraulic Control System Design for XYZM Plate-and-Frame Filter Press

2014 ◽  
Vol 945-949 ◽  
pp. 2788-2793
Author(s):  
Lan Xiang Hou ◽  
Feng Gang Li ◽  
Cai Xia Ju ◽  
Wei Xu
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Filter Press ◽  
Control System Design ◽  
Hydraulic Control ◽  
Working Process ◽  
Hydraulic Principle ◽  
Working Principle ◽  
System Effectiveness ◽  
Hydraulic Control System

This paper introduces the working principle of XYZM Plate-and-frame Filter Press, illustrates the working process of the hydraulic control system by combining circuit and hydraulic principle diagram, and then gives out the checking analysis and the failure analysis on the hydraulic system. The application results show that our hydraulic control system can not only complete the automatic control well for the plate-and-frame filter press, but also keep the pressure stable and controllable, which improves the productivity and the system effectiveness.

Analysis of a Three-Phase Pulsating Flow Hydraulic System

1978 ◽  
Vol 5 (1) ◽  
pp. 24-30
Author(s):  
Y.M. EI-Ibiary ◽  
P.R. Ukrainetz ◽  
P.N. Nikiforuk
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Low Pressure ◽  
Area Ratio ◽  
Pulsating Flow ◽  
Experimental Results ◽  
Hydraulic Control ◽  
Three Phase ◽  
Hydraulic Control System

An analysis is presented of a three-phase pulsating flow hydraulic control system. Such a system consists of five basic components – an alternator, transformers, rectifiers, a compensator and high and low pressure accumulators. In carrying out this analysis, it is assumed that there is no leakage, the fluid is incompressible, the transformer area ratio is unity and the transformers and check valves of the rectifier unit are symmetric. Some typical simulation and experimental results are included.

The Analysis and Improvement of Hydraulic Control System of Sealant-Spreading Machine

2011 ◽  
Vol 110-116 ◽  
pp. 2206-2209
Author(s):  
Cai Xia Ju ◽  
Feng Gang Li
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Production Cost ◽  
Control Circuit ◽  
Hydraulic Control ◽  
Equipment Operation ◽  
Operation Stability ◽  
Hydraulic Valves ◽  
Improved Methods ◽  
Hydraulic Control System

This paper introduces the composing and the principle of hydraulic control system of Sealant-spreading machine _ a specific machine for insulating-glass made. It analyzes the matters of the hydraulic system that often appear on operation, and implements the methods of improvement to hydraulic oil, hydraulic valves, etc hydraulic system and its control circuit system. The improved methods not only reduce the production cost, but also improve the equipment operation stability. Practice shows that these schemes are effective and feasible.The improvement of hydraulic control system not only fulfils the technology demand of Sealant-spreading Machine, but also stabilizes the performance much more.

Research on Variable Speed Electro-Hydraulic Control System Based on Energy Regulating Strategy

2006 ◽  
Author(s):  
Shen Haikuo ◽  
Jin Bo ◽  
Ying Chen
Keyword(s):  
Control System ◽  
Dynamic Response ◽  
Speed Control ◽  
Energy Regulation ◽  
Hydraulic Control ◽  
Variable Speed ◽  
Low Speed ◽  
System A ◽  
Control Precision ◽  
Hydraulic Control System

A new type of variable speed electro-hydraulic control system is developed in this paper. In this system, a fixed displacement hydraulic pump is driven by an electrical motor which is controlled by a frequency inverter, so the discharge of the pump can be modified by changing the speed of the motor. A proportional directional valve is used to acquire higher low-speed control precision and faster dynamic response while the system is decelerating. In order to improve the dynamic response while the system is accelerating, an energy regulation device is employed in the system. The experiment results show that this system has higher efficiency than valve control system. Further more it has faster dynamic response and higher low-speed control precision than normal variable speed hydraulic control system.

Forces Analysis of Piston Couple in Swash-Plate Axial Piston Motor

2013 ◽  
Vol 834-836 ◽  
pp. 1319-1322 ◽  
Author(s):  
Jin Yan Shi
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Optimal Design ◽  
Hydraulic Control ◽  
Hydraulic Motor ◽  
Swash Plate ◽  
Arbitrary Phase ◽  
The Mathematical Model ◽  
Axial Piston ◽  
Hydraulic Control System

Hydraulic motor is an important hydraulic component in hydraulic control system, so the analysis of its performance is very important. The piston couple is one of the most important frictional pairs in axial piston motor, this paper studies the forces on the piston couple of swash-plate axial piston motor. It deduces the mathematical model of forces analysis in arbitrary phase of the cylinder, and the forces of a type of axial piston motor are analyzed. And it gives suggestions for structure optimal design of piston couple.

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