Design of Digital Wire Feed Control System Based on LPC2132

2013 ◽  
Vol 694-697 ◽  
pp. 2057-2060
Author(s):  
Jin Shui Shi
Keyword(s):  
Control System ◽  
Response Speed ◽  
Feed System ◽  
Change Rate ◽  
Interface Circuit ◽  
Analog Control ◽  
Feed Control ◽  
Control Principle ◽  
Wire Feed ◽  
Poor Stability

Aiming at the problem of MIG welding and considering the existing analog control wire feed system has the disadvantages of low response speed, low control accuracy and poor stability. This thesis designs a set of digital control wire feed system based on LPC2132 microprocessor and introduces the control principle of wire feed motor, CAN bus interface circuit and PID control algorithm. Under the condition of power grid voltage fluctuation and load change, we do a lot of experiments. The results show that: the wire feed change rate of designed system is very small, which not only meets the requirements of JB/T-1998.MIG/MAG arc welding standard, but also greatly improves the accuracy and stability of control system.

An Analog Control System for an Inverted Torsion Pendulum

1973 ◽  
Vol 1 (5) ◽  
pp. 405
Author(s):  
ST Etris ◽  
KC Lieb ◽  
VK Sisca ◽  
IC Moore ◽  
AL Batik ◽  
...  
Keyword(s):  
Control System ◽  
Torsion Pendulum ◽  
Analog Control

Application of DC Motor Digital Speed Control System in Submerged Arc Welding Machine

2012 ◽  
Vol 233 ◽  
pp. 283-287
Author(s):  
Gang Zhang ◽  
Jian Qu Zhu
Keyword(s):  
Control System ◽  
Digital Control ◽  
Arc Welding ◽  
Speed Control ◽  
Dc Motor ◽  
Submerged Arc Welding ◽  
Digital Control System ◽  
Welding Machine ◽  
Analog Control ◽  
Submerged Arc

Abstract: In the current domestic control system of submerged arc welding machine, most walking DC motor speed control uses the method of analog control pulse width modulation (PWM), which has a complex circuit, high failure rate and is inconvenient to use. For this phenomenon, DSP (TMS320F2812) disc is used to build a digital control system, and replace the traditional analog controller, allowing the weld control system more simple and practical. The main content of this paper is the hardware circuit design and software algorithms programming of digital control DC speed control system. Tested by experiment, this digital control system can replace the weld analog control system, enabling the motor to have good control performance at low speed thereby enhancing the welding effect of submerged arc welding machine.

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