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Abstract: A
new one-cycle-control method of pulsed MIG arc welding system is
designed. With nonlinear control method and real-time arc voltage
acquisition, this method controls the average voltage in each cycle and
makes it equal to the pre-set reference signal. The control system
possesses excellent dynamic response. When disturbance happens, in every
cycle, there is neither static error nor dynamic error between average
arc voltage and pre-set reference signal. The arc length will be
adjusted to stable status in several cycles. The experiment result
indicates that the designed control system possesses excellent are
self-adjustment property and welding procedure characteristic.
Key words: Pulsed MIG Nonlinear control One cycle
CLC No: TG431.5
北京市科委基金资助项目(954051100).
Received 20040301, received in revised form 20040810
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