Robust Control Study on the Large Forging Hydraulic Press Active Sync System

2010 ◽  
Author(s):  
Liu Yuequn ◽  
Zhou Yucai ◽  
Liu Zhongwei ◽  
Liu Xinliang
Keyword(s):  
Robust Control ◽  
Hydraulic Press ◽  
Large Forging ◽  
Control Study

Research of H∞ Robust Control for the Giant Die Forging Hydraulic Press’s Synchronous Control System under the Uncertainty Coefficient

2012 ◽  
Vol 190-191 ◽  
pp. 819-824 ◽  
Author(s):  
Ying Jian Deng ◽  
Zhong Wei Liu
Keyword(s):  
Control System ◽  
Robust Control ◽  
Control Algorithm ◽  
Hydraulic Press ◽  
National Defense ◽  
Synchronous Control ◽  
Performance Quality ◽  
System Synchronization ◽  
Uncertainty Coefficient

The giant hydraulic die press is our country national defense and the infrastructure essential equipment, the synchronous control system is the essential device to the giant forging hydraulic press, its synchronization control performance quality is good or bad will directly determine the quality of the product. This article through the proof of the theorem, gives the specific steps to achieve H∞ robust control algorithm. The simulation results show that: this control strategy has good inhibition to the change of system parameters, robustness is very strong, can well eliminate the system synchronization error.

Fault diagnosis of hydraulic system in large forging hydraulic press

Measurement ◽  
2014 ◽  
Vol 49 ◽  
pp. 390-396 ◽  
Author(s):  
Xian-bin Fu ◽  
Bin Liu ◽  
Yu-cun Zhang ◽  
Li-na Lian
Keyword(s):  
Fault Diagnosis ◽  
Hydraulic System ◽  
Hydraulic Press ◽  
Large Forging

Research on Mathematic Model and Measuring Method of Moving Beam Attitude in Large Forging Hydraulic Press

2011 ◽  
Vol 128-129 ◽  
pp. 1213-1216
Author(s):  
Hui Chen ◽  
Jian Ping Tan ◽  
Jin Li Gong ◽  
Xian Yue Cao ◽  
Ji Neng Zhou
Keyword(s):  
Research Result ◽  
Mathematic Model ◽  
Measuring Method ◽  
Hydraulic Press ◽  
Large Forging ◽  
Mechanical Feature ◽  
Object A ◽  
Moving Beam ◽  
Safety Operation ◽  
Special Working

The moving beam of large forging hydraulic press is taken as a research object. A mathematic model of moving beam’s six freedom degrees attitude is established. According to the mechanical feature and special working conditions of large forging hydraulic press, a non-contacted method for moving beam attitude measuring which based on machine vision is proposed. The basic principle and composition of the system are introduced. The system is applied in 300MN large forging hydraulic press, and large amounts of monitoring data are collected which confirm that the measuring method is effective. The research result is helpful for the safety operation and maintenance of large forging hydraulic press.

Design of New Condition Monitoring System and Data Analysis in Large Forging Die Hydraulic Press

2011 ◽  
Vol 311-313 ◽  
pp. 1546-1550
Author(s):  
Hui Chen ◽  
Jian Ping Tan ◽  
Jin Li Gong ◽  
Zhao Qiang Shu ◽  
Xian Yue Cao ◽  
...  
Keyword(s):  
Data Analysis ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Working Conditions ◽  
Hydraulic Press ◽  
Contact Method ◽  
Large Forging ◽  
Monitoring Method ◽  
Condition Monitoring System ◽  
Safety Operation

The mechanical characteristics and extremely hard working conditions of large die hydraulic press are considered. The limitations of traditional condition monitoring method are analyzed. A new condition monitoring system which consists of a digital and non-contact method for measuring column stress and a digital method for measuring moving beam’s spatial altitude based on machine vision is proposed. The basic principle and composition of the system are introduced in detail. The system is applied in 300MN large forging hydraulic press, and large amounts of monitoring data are collected. Data analysis is carried out. The laws of column stress distribution in different working conditions are found out. At last, some recommendations are proposed which is helpful for the safety operation and maintenance of large hydraulic press.

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