Analysis of a Nonlinear Web-Tension Control System of a High- Speed Gravure Printing Machine

2006 ◽  
Author(s):  
Bong-ju Lee ◽  
Sung-hwan Kim ◽  
Chul-goo Kang
Keyword(s):  
Control System ◽  
High Speed ◽  
Tension Control ◽  
Gravure Printing ◽  
Tension Control System ◽  
Printing Machine ◽  
Web Tension

Research on Tension Control System of Wire Saw Slicing Machine

2014 ◽  
Vol 621 ◽  
pp. 419-424
Author(s):  
Yan Bo Feng ◽  
Bo Chen ◽  
Tao Sun
Keyword(s):  
Control System ◽  
High Speed ◽  
Closed Loop ◽  
High Surface ◽  
Tension Control ◽  
High Yield ◽  
Functional Requirements ◽  
High Surface Quality ◽  
Wire Saw ◽  
Tension Control System

Nowadays, wire sawing becomes the most advanced brittle crystals slicing technology because of its advantages of slicing larger crystals ingots into very small thickness, high surface quality, high yield wafers. In the process, the thin wire, which is the processing tools, travels at high speed, and subjects to external excitation from many aspects. Wire saw tension control is the core and difficulty of the control system. Mathematical models of tension subsystems were studied. The control strategy of swing arm motor tension direct closed-loop combination of speed difference indirect closed-loop was proposed. The developed tension control hardware and software system reached the functional requirements and technical indicators, and constant tension precision control was solved effectively.

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