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Machine translation
1. (WO1979000808) DEVICE FOR MEASURING THE FREQUENCY OF A PULSE GENERATOR AND DIGITAL CONTROL SYSTEM COMPRISING SUCH A DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000808    International Application No.:    PCT/FR1979/000025
Publication Date: 18.10.1979 International Filing Date: 14.03.1979
IPC:
G01P 3/489 (2006.01), G01R 23/10 (2006.01)
Applicants:
Inventors:
Priority Data:
7808328 22.03.1978 FR
Title (EN) DEVICE FOR MEASURING THE FREQUENCY OF A PULSE GENERATOR AND DIGITAL CONTROL SYSTEM COMPRISING SUCH A DEVICE
(FR) DISPOSITIF DE MESURE DE LA FREQUENCE D"UN GENERATEUR D"IMPULSIONS ET SYSTEME DE COMMANDE NUMERIQUE COMPORTANT UN TEL DISPOSITIF
Abstract: front page image
(EN)Device for accurately measuring the repetition frequency of a pulse generator with a constant acquisition time over a large measuring range and with a constant precision. The pulses of a fast clock are counted during each period of the pulses of the generator and then accumulated in a register (contents N2) during each period of the pulses of a slow clock. The pulses of the generator are also counted during this last period (contents N1). At the end of this second period, a computer gives the measure by calculating (Alpha) = K N1/N2, K being a proportionality coefficient. Application to the speed control and regulation of a motor in a mill, the pulse generator being driven by the motor.
(FR)Dispositif de mesure precise de la frequence de re petition d"un generateur d"impulsions avec un temps d"acquisition constant sur une large plage de mesure et une precision constante. Les impulsions d"une horloge rapide sont comptees au cours de chaque periode des impulsions du generateur puis accumulees dans un registre (contenu N2), au cours de chaque periode des impulsions d"une horloge lente. Les impulsions du generateur sont egalement comptees au cours de cette derniere periode (contenu N1). A la fin de cette periode, un calculateur delivre la mesure en calculant (Alpha) = K N1/N2, K etant un coefficient de proportionnalite. Application a la commande et la regulation de vitesse d"un moteur de laminoir, le generateur d"impulsions etant entraine par le moteur.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)