Digital Motor Speed Control Applied to Wire Feeder ofWelding Machine

• Main Authors: Dao-Ge Fu, 傅道格
• Other Authors: 劉寅春
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/bye89j

碩士 === 淡江大學 === 電機工程學系碩士班 === 106 === In recent years, with the rapid development of control technologies such as power electronics, digital signal processing (DSP) and modern control theories, digital motor drive has become the mainstream of modern servo technology. Digital signal processing control platform (DSP) with high-speed computing capability is widely used in various image processing, speech processing, digital communications and servo system. This paper questions the digital motor control is applied to welding wire feeding mechanism,the main use American Texas instruments TMS320F2808 fixed-point type DSP chip development by combining Ma Wei technology development of DSP control board as the main control platform of digital motor control, in this platform for motor speed feedback, PWM generation and control the speed of PID controller is designed. The advantages of using this method is in the motor speed control in the past was mainly done using voltage corresponding to the rotating speed of the look-up table method to know the current speed, therefore, when the load changes, that is, different welding materials, welding torch pipe curled up, the current will also follow the change of output and lead to error of speed, so this paper will motor speed control digital, using the encoder of the motor itself, feedback the motor speed, successfully overcome the problem.