NDLI: CMAC-based real-time calculation of the effective welding current during A.C. resistance spot welding

Content Provider	IEEE Xplore Digital Library
Author	Zheren Ma Liang Gong Yanming Li Chengliang Liu
Copyright Year	2013
Description	Author affiliation: Inst. of Mechatron., Shanghai Jiaotong Univ., Shanghai, China (Zheren Ma; Liang Gong; Yanming Li; Chengliang Liu)
Abstract	Real-time measurement of effective current is essential for fine control of welding process. However, conventional methods cannot simultaneously satisfy the accuracy and the real-time requirements. On the basis of the welding transformer circuit model, a new measuring method is proposed. This method measures the peak value of the welding current and then multiplies a coefficient K to obtain the root-mean-square value, which enables the processor to calculate the half-wave effective current at the moment of peak current. A Cerebellar Model Articulation Controller(CMAC) model is off-line trained and used online to compute K, which is a nonlinear function against the firing angle and the peak current angle. A DSP-based resistance spot welding monitoring system is developed to perform CMAC computation. Experimental results suggest that this measuring method is feasible.
Starting Page	1669
Ending Page	1674
File Size	792937
Page Count	6
File Format	PDF
ISBN	9781467355575
e-ISBN	9781467355605
DOI	10.1109/ICMA.2013.6618166
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-04
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mathematical model Current measurement Equations Real-time systems Spot welding Integrated circuit modeling Cerebellar Model Articulation Controller(CMAC) Resistance Spot Welding Effective Welding Current Real-time Measurement
Content Type	Text
Resource Type	Article

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