Study of wire tension control system based on closed loop PID control in HS-WEDM

2015 ◽  
Vol 82 (5-8) ◽  
pp. 1089-1097 ◽  
Author(s):  
Qiang Li ◽  
Jicheng Bai ◽  
Yinsheng Fan ◽  
Zhiyong Zhang
Keyword(s):  
Control System ◽  
Pid Control ◽  
Closed Loop ◽  
Tension Control ◽  
Wire Tension ◽  
Tension Control System

Genetic Algorithm Based Fuzzy Logic Controller for Wire-EDM Machine

2014 ◽  
Vol 536-537 ◽  
pp. 1273-1276
Author(s):  
Chen Pan ◽  
Ru Qing Chen
Keyword(s):  
Genetic Algorithm ◽  
Fuzzy Logic ◽  
Control System ◽  
Steady State ◽  
Closed Loop ◽  
Fuzzy Logic Controller ◽  
Tension Control ◽  
Wire Edm ◽  
Wire Tension ◽  
Tension Control System

Wire tension as well as wire feed should be controlled tightly for the geometry and corner accuracy of wire-EDM. A closed-loop wire tension control system for Micro-Wire-EDM is presented to guarantee a smooth wire transport and a constant tension value. To keep smooth wire transportation and avoid wire breakage during wire feeding, the reel roller is modified and the clip reel is removed from the wire transport mechanism. A genetic algorithm-based fuzzy logic controller (FLC) is proposed to investigate the dynamic performance of the closed-loop wire tension control system. Theoretical analysis and experimental research demonstrate that the developed wire transport system can result in satisfactory transient response, steady-state response and robustness. The proposed FLC can obtain faster transient response and smaller steady-state error than PI controller.

Simulation of Closed-Loop Paper Tension Control System

2013 ◽  
Vol 329 ◽  
pp. 434-437
Author(s):  
Yu Qiu Sun ◽  
Ji Bin Zhao ◽  
Jian Xin Sun ◽  
Ji Fei Cai
Keyword(s):  
Control System ◽  
Quantitative Research ◽  
Control Parameter ◽  
Closed Loop ◽  
Tension Control ◽  
Loop Control ◽  
Printing Quality ◽  
Control Diagram ◽  
Tension Control System

Paper tension is the most important control parameter in roll material production that directly impacts the printing quality of the web offset. Based on the closed-loop paper tension control theory, by conducting a research into the simulation of paper tension control system with MATLAB/SIMULINK, presented the closed-loop control diagram about the paper tension control system. Under different control parameter, the value of the overshoot, respond speed and residual of the system varies. As a result, the quantitative research on the simulation of the system offers a valid means in improving the control accuracy.

Optimal analysis and application of the warp tension control system for a rapier loom

2021 ◽  
pp. 004051752110536
Author(s):  
Yanjun Xiao ◽  
Zhenpeng Zhang ◽  
Zhenhao Liu ◽  
Weiling Liu ◽  
Nan Gao ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Pid Control ◽  
Performance Optimization ◽  
Experimental Studies ◽  
Tension Control ◽  
Control Performance ◽  
Improved Genetic Algorithm ◽  
Warp Tension ◽  
Tension Control System

Traditional proportional–integral–derivative (PID) control performance optimization is an essential method to improve a loom’s warp tension control performance. This work proposes an improved genetic algorithm optimized PID control scheme to overcome the decline in control performance of the traditional PID control algorithm in a loom’s warp tension control system. Through the decoupling analysis of loom motion mechanism, the establishment of warp tension model and the optimization of fitness evaluation mechanism of genetic algorithm can effectively overcome the problems of local optimal solution and algorithm degradation of genetic algorithm. Simulation experiments were carried out with the traditional PID, the integral separation PID, and the genetic PID in warp tension control. The results show the advantage of the genetic-PID algorithm to control warp tension stability. Ultimately, according to the functional characteristics of the loom mechanism, a tension control platform for experimental studies was established. The test results show that the maximum fluctuation range of warp tension is within [−2, +6] at the test speed of 850 rpm, which meets the requirements of long-term stable and reliable control of warp tension under different weaving conditions.

Research on Fuzzy-PID Control for a Tension System of Rotary Magnetorheological Damper

2009 ◽  
Vol 16-19 ◽  
pp. 93-99
Author(s):  
Li Yong Hu ◽  
A Liang Chen
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Pid Control ◽  
Fuzzy Inference ◽  
Control Strategies ◽  
Tension Control ◽  
Magnetorheological Damper ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Tension Control System

A rotary MRF (magnetorheological fluids) damper is introduced in tension control systems. An experimental tension control system is designed by using the MRF damper as tension control actuator. Control strategies of the tension control system are studied. A fuzzy-PID feedback controller for the tension control system is constructed and tested, where the variable parameters of the PID were modified by using the fuzzy inference rules. Experimental results indicate that the fuzzy-PID control strategy can be used in the tension control system to get better performance than the conventional PID control strategy.

Warp Tension Control System Based on IMC

2014 ◽  
Vol 635-637 ◽  
pp. 1294-1298
Author(s):  
Zhen Pan ◽  
Peng Luo ◽  
Zhen Yu Wu
Keyword(s):  
Control System ◽  
Pid Control ◽  
Permanent Magnet Synchronous Motor ◽  
Internal Model Control ◽  
Adjustable Parameter ◽  
Tension Control ◽  
Factors Influencing ◽  
Warp Tension ◽  
Model Control ◽  
Tension Control System

To ensure stability of warp tension during weaving process, the paper presented a warp tension control system which uses two permanent magnet synchronous motor (PMSM) drive let-off and take-up mechanism respectively. Based on analyzing factors influencing warp tension, a warp tension mathematical model was established. The paper proposed a tension adjustment arithmetic based on internal model control (IMC) method. The method has only one adjustable parameter which decides performance of the system. The simulation results show that the warp tension control system based on IMC has a fine effect on tension stability of warp and it is significantly superior to conventional PID control in terms of robustness and immunity.

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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