公开(公告)号：US3706017A

公开(公告)日：1972-12-12

申请号：US3706017D

申请日：1970-07-15

Applicant: DOVER CORP CANADA LTD

Inventor： GINGRICH JOHN A

IPC: B66B1/30 ,  H02P7/34

CPC classification number: B66B1/30 ,  H02P7/347

Abstract: A SYSTEM FOR ACCURATELY CONTROLLING THE SPEED OF A D.C. MOTOR WHICH IS POWERED BY THE GENERATOR OF A MOTORGENERATOR SET. THE FLUX IN THE GENERATOR IS CONTROLLED BY A GENERATOR FIELD SUPPLIED BY A SWITCHING BRIDGE AMPLIFIER. THE VOLTAGE INDUCED IN AN EXTRA GENERATOR FIELD IS INTEGRATED TO OBTAIN A MEASUREMENT OF THE CHANGE OF THE FLUX IN THE GENERATOR AND THIS MEASUREMENT IS USED TO CONTROL THE SWITCHING OF THE BRIDGE AMPLIFIER. THE CONTROL IS EFFECTED IN SUCH A WAY THAT THE RATE OF CHANGE OF FLUX IN THE GENERATOR IS MADE PROPORTIONAL TO THE ERROR BETWEEN THE PATTERN SPEED AND THE MEASURED SPEED OF THE D.C. MOTOR.

D R A W I N G