公开(公告)号：US3621354A

公开(公告)日：1971-11-16

申请号：US3621354D

申请日：1970-01-07

Applicant: GEN ELECTRIC

Inventor： FAWCETT JAMES W ,  IRWIN JOHN M ,  MCFADYEN ROBERT J

IPC: G05D3/20 ,  H02P7/29 ,  G05B5/01

CPC classification number: H02P7/2913 ,  G05D3/20 ,  Y10S388/912 ,  Y10S388/921

Abstract: Wideband digital servosystem for accurately controlling the velocity and/or position of a DC motor. A plurality of constant current sources connected in the armature circuit are actuated in response to a sensed digital error, determined by subtracting from a digital input a number of pulses proportional to the motor rotation.