Dynamic Characteristic Analysis on Hydraulic Control System for Cutting System of Longitudinal Roadheaders

2012 ◽  
Vol 619 ◽  
pp. 467-471
Author(s):  
Xiao Hua Wei ◽  
Miao Xie
Keyword(s):  
Control System ◽  
Design Method ◽  
Hydraulic Control ◽  
Characteristic Analysis ◽  
Matlab Simulink ◽  
Modularization Design ◽  
Control System Model ◽  
The Mathematical Model ◽  
Cutting System ◽  
Hydraulic Control System

Dynamic characteristics of the hydraulic control system for the cutting system of roadheaders are very important for analyzing the working performance. This paper supplies the modularization design method for hydraulic control system of cutting system of roadheaders. It utilizes the Matlab/Simulink to establish the mathematical model for each hydraulic components of the cutting system. And the hydraulic control system model is simulated by Matlab/Simulink. It’s useful for predicting and optimize the dynamic response of the hydraulic control system.

Research on the Ship Motion Simulation Platform for Three Degrees Based on Seasickness Test and Kinematics Analysis

2012 ◽  
Vol 252 ◽  
pp. 89-92
Author(s):  
Zhi Wei Zhang ◽  
Song Li ◽  
Kai Cong ◽  
Jin Chun Song
Keyword(s):  
Control System ◽  
Virtual Prototype ◽  
Ship Motion ◽  
Simulation Platform ◽  
Motion Simulation ◽  
Hydraulic Control ◽  
Kinematics Analysis ◽  
Matlab Simulink ◽  
Hydraulic Control System

A new structure of ship motion simulation platform and its hydraulic control system were designed. Matlab/Simulink was used for the analyses of hydraulic control system. Virtual prototype of the ship motion simulation platform was built up by ADAMS under the seasickness test condition, and the kinematics analysis was also carried on. The results show the effectiveness on the model of platform.

Matching on Dynamic Characteristics of Automatic Transmission Fluid with Hydraulic Control System

2014 ◽  
Vol 988 ◽  
pp. 647-652
Author(s):  
Yun Jiang Cheng ◽  
Yan Fang Liu ◽  
Xiang Yang Xu
Keyword(s):  
Control System ◽  
Automatic Transmission ◽  
Hydrodynamic Theory ◽  
Bench Test ◽  
Hydraulic Control ◽  
Transmission Fluid ◽  
Control System Model ◽  
Proper Values ◽  
Test Result ◽  
Hydraulic Control System

Matching analysis of automatic transmission fluid (ATF) and the hydraulic control system is an essential work for the development of ATFs used in automatic transmissions. Based on the hydrodynamic theory, an ATF model was built. By adopting the modeling concept of combining and establishing models with basic elements, the hydraulic control system model was built, and then complete matching model was built by introducing the ATF model into it. The matching level of the ATF and the hydraulic control system was evaluated, and the key parameters which influence the performance of the hydraulic control system and their proper values were defined, which will be reference for developing optimal ATFs. With the bench test result and vehicle test result on road, the matching method and models for ATFs with the hydraulic control system are confirmed to be effective and feasible, which can significantly shorten the development cycle of ATFs.

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.

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 Optimization of Clutch Hydraulic Shift Control System in Automatic Transmissions with Failure Protection Function

2015 ◽  
Vol 743 ◽  
pp. 11-16
Author(s):  
S.H. Tang ◽  
Yan Fang Liu ◽  
Xiao Han
Keyword(s):  
Control System ◽  
Design Method ◽  
Automatic Transmission ◽  
Hydraulic Control ◽  
Design And Optimization ◽  
Significant Control ◽  
Shift Control ◽  
Traditional Design ◽  
Automatic Transmissions ◽  
Hydraulic Control System

As a significant control component of vehicles, automatic transmissions should have failure protection function. The failure protection function partly is determined by the hydraulic control system. However traditional design could not cover all of failures, and there is no general design method. A design method is proposed for designing the shift control oil circuit of the hydraulic control system with the failure protection function. . The design method is applied to optimize the hydraulic control system of a six-speed automatic transmission. The function of the optimized hydraulic control system is confirmed by the dynamic simulation. The results show that the design method can simplify the hydraulic control system without losing any original functions. The proposed design method is proved to be suitable for all kinds of hydraulic control systems of automatic transmissions.

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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