G - Physics – 05 – D
Patent
G - Physics
05
D
341/90
G05D 13/62 (2006.01) B21C 1/12 (2006.01) H02P 5/50 (2006.01)
Patent
CA 1099371
ABSTRACT OF THE DISCLOSURE The present invention relates to a control system for a multi-stage reducing apparatus through which elongate material is advanced and reduced in cross section. The invention is particularly suitable for use in connection with apparatus, e.g., metal strip rolling mills and wire drawing machinery, having a series of material reducing stages through which elongate material is continuously advanced and progressively reduced in cross sectional area. The apparatus includes means for generating a set of signals representing the cross sections of the material at each of the stages, means for generating a speed control signal representative of the speed of the material at one stage, and control means responsive to the cross section signals and the speed control signal and operable for producing a plurality of speed reference signals for controlling the speed of the material at each stage, each such reference signal being proportional to the speed control signal and the ratio of the cross section of the material at said one stage and the cross section of the material at the respective stage. The control means is preferably embodied as a plurality of analog arithmetic units, for the plurality of stages, each responsive to the speed control signal and to the cross section signals of said one stage and the respective stage and operable for generating an output signal corresponding to the product of the speed control signal and the ratio of the cross sections of the material.
292934
Amtel Inc.
Gowling Lafleur Henderson Llp
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