Method and system for regulating feeding wire speed
A speed regulation system and wire feeding technology, applied in control systems, DC motor speed/torque control, excitation or armature current control, etc. Problems such as electromotive force sampling to achieve the effect of stable rotation speed
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[0020] First refer to image 3 The timing sequence of the induction electromotive force feedback sampling control of the speed control of the wire-feeding motor illustrates the wire-feeding sampling method of the present invention.
[0021] When the wire-feeding motor is working, an induced electromotive force will be generated when the power supply is cut off, and the induced electromotive force of the wire-feeding motor has a linear relationship with its speed. Therefore, accurate sampling of the induced electromotive force of the motor can accurately reflect the rotational speed of the motor. The voltage waveform at both ends of the wire feeding motor is as follows: figure 2 shown. There is a t in the wire feed motor voltage waveform d and t e period. t d The time period is the release time of the energy stored in the armature winding of the wire-feeding motor. During this time period, the voltage at both ends of the wire-feeding motor is close to zero. During feedbac...
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