Power factor monitoring and control system for resistance weldin

Details Power factor monitoring and control system for resistance weldin Power factor monitoring and control system for resistance weldin

1979-01-29

1981-03-03

Ruggiero, Joseph F.

Boots, shoes, and leggings

219110, 364482, 364483, G06F 1546, B23K 910

Patent

active

042544661

ABSTRACT:
A Power Factor Monitoring and Control System for controlling the quality of a spot weld made in the automotive industry on assembly line welders. The quality and strength of a spot weld can be correlated to a drop in resistance during the fusion process. Rather than measuring this resistive drop at the welding electrodes by attaching external sensing means thereto, the control system of the present invention makes use of the phenomenon that a resistive drop also causes a change in the total load power factor further resulting in a change to the current extinction angle of a weld half cycle. By determining the amount of increase or decrease that has occurred in the current extinction angle during a weld or a group of welds, a basis for the control of the welding heat is obtained.

REFERENCES:
patent: 3518399 (1970-06-01), Vanderhelst
patent: 3694615 (1972-09-01), Brandeis
patent: 3746829 (1973-07-01), Petzold
patent: 4001540 (1977-01-01), Drake et al.
patent: 4034212 (1977-07-01), Paxton
patent: 4079226 (1978-03-01), Boyd et al.

Affiliated with

Also associated with

Rating

Power factor monitoring and control system for resistance weldin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power factor monitoring and control system for resistance weldin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power factor monitoring and control system for resistance weldin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-82979