Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Running-speed control
Patent
1976-08-04
1977-12-06
Dobeck, B.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Running-speed control
318 7, H02P 546, H02P 500
Patent
active
040619478
ABSTRACT:
A speed control system for use in a continuous strip manufacturing apparatus such as a continuous casting and rolling apparatus having a plurality of work means including roll stands through which metal rod or other elongate material is continuously moved. The control system includes a function generator providing a speed control signal to the speed regulator means of one roll stand which is linearly proportional to the speed of the preceding work means and which is also linearly proportional to the sum of an operator selected arbitrary signal voltage proportional to a desired speed ratio of the one roll stand to the preceding work means and a looper signal voltage proportional to the variation from a preselected position of the position of a loop of elongate material formed between the one roll stand and the preceding work means. The control system thus acts to maintain a desired proper relation between the speeds of the one roll stand and the preceding work means while providing compensating variations in the speed of the one roll stand with variations in the position of the loop of elongate material from a preselected position.
REFERENCES:
patent: 2428567 (1947-10-01), Harris et al.
patent: 2441985 (1948-05-01), Baker
patent: 2462203 (1949-02-01), Kovalsky
patent: 2965821 (1960-12-01), King et al.
patent: 3515959 (1970-06-01), Jackson
Dobeck B.
Essex Group Inc.
Freiburger Lawrence E.
Sommer Robert D.
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