A Precision Tension Control System Based on PIC

2006 ◽  
Vol 532-533 ◽  
pp. 97-100 ◽  
Author(s):  
Sheng Le Ren ◽  
Yong Zhang Wang ◽  
Hua Lu ◽  
Guo Sen Su

As an important factor in composite fiber winding, fiber winding tension influences the product quality directly, and therefore tension control is a key technique in fiber winding techniques. This paper introduces a closed loop tension control system with the PIC single chip computer as the kernel, a function module with TLC5615 D/A converter as the output, AC servomotors as the actuator, and a radius-following arm to measure the real time radius of the scroll. The mechanism of the tension control system is analyzed and the mathematical model is set up. Then the paper expatiates the design of main control circuit, the voltage transformation circuit and the analogy filter circuit. In addition, the paper presents digital filter and control algorithm of the PIC software. The system is proved to have high control precision and rapid time response through performance experiments of the tension control system in different working states, which well meets the anticipated design requirements.

2022 ◽  
Vol 2160 (1) ◽  
pp. 012080
Author(s):  
Kaijie Zhao ◽  
Sheng Zeng ◽  
Liangliang Zhao

Abstract When the enameled wire is winded onto the poles of the motor stator or rotor, the winding quality hugely relies on the control precision of the tension. Therefore, it is necessary to control the tension of the enameled wire in winding process. A tension control system is built with single chip microcomputer, the encoder and the servo motor. The PID feedback controller and feedforward controller are combined to form feedforward feedback controller, which using feedback information of swing angle deviation and feedforward information of wire frame position to adjust the pay off speed dynamically and control tension of enameled wire further. A procedural experimental modelling method is discussed in order to identify the feedforward model. The experiment is performed, it is found that in the typical situation of setting tension 1500 g, the tension fluctuation rate of the PID controller with feedforward model is only 2%, which is far better than that of pure PID controller with a fluctuation rate of 14%. The result shows that the proposed experimental modelling method hosts the characteristics of good accuracy, universality and applicability.


2012 ◽  
Vol 443-444 ◽  
pp. 225-228
Author(s):  
Shi Huan Wang ◽  
Jun Gao

Filament tension control system is integrated into real-time core of open-architecture winding CNC. Based on filament tension generation theory for filament wound component, the method of process elimination is applied to modify the theory of filament tension control to transform uncontrollable elastic tension to known quantity, thus improves the control precision of tension in filament composite wound components. (Abstract)


2013 ◽  
Vol 380-384 ◽  
pp. 317-320 ◽  
Author(s):  
Peng Zhang ◽  
Rui Feng Yang ◽  
Xue Liang Zhang

FOG coil (fiber coil) is the core component of the FOG. During the winding, the tension of fiber winding directly affects the performance of fiber coil. The paper proposes a PID controller as the core of the tension control method and establishes the related model between rolling-up fiber spool and discharging fiber spool. The simulation results in Matlab Simulink show that the tension control system can primely coordinate the winding tension and have fast response, small overshoot, high accuracy and stability.


2010 ◽  
Vol 129-131 ◽  
pp. 370-375 ◽  
Author(s):  
Sheng Le Ren ◽  
Yi Nan Lai ◽  
Yong Zhang Wang ◽  
Hua Lu ◽  
Ye Dai

Winding molding is a commonly-used molding method for composite fiber materials. In this method, the fiber winding tension control is a key technique in fiber winding since the winding tension directly affects the quality of winded products. Here designed is a closed-loop tension control system, equipped with the PLC as the main controller, the industrial control computer as the upper-host, the alternating numeric servo-electromotor and air cylinder as the actuators, and with the angle sensor of real time feedback filament tension change is designed. Presented below is Fuzzy-PID control algorithm, which combines the advantages of PID and fuzzy control by adopting the theory of adapt fuzzy control in big error range and adapt PID control in small error range. Experimental results prove that the principle of the design scheme is right with tension deviation less than 4 pers, response time about 0.4s and thus meeting the requirements of the system well.


2012 ◽  
Vol 442 ◽  
pp. 488-492 ◽  
Author(s):  
Rong Chun Sun ◽  
Xue Song

To test the accuracy of image motion compensation of space camera, the moving target simulator was developed according to the principle of relative motion. As the core controller, PIC microcontroller controls DC motor to drive photoetching turntable rotating to simulate the relative linear velocity between ground target and aircraft, and the rotation motion is divided into uniform velocity rotation and sinusoidal velocity rotation. Furthermore, the simulation of drift angle of aircraft was realized by controlling stepper motor to drive the photoetching turntable deflecting, and the deflection includes uniform deflection, sinusoidal velocity deflection and specified angle positioning. The design of the hardware and software of control system has been completed and tested, and the experiment results show that the control system has high control precision and meets the design requirements.


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