公开(公告)号：US3582743A

公开(公告)日：1971-06-01

申请号：US3582743D

申请日：1969-03-13

申请人： SYCOR INC

发明人： DIAZ GUILLERMO ,  WOOD ROBERT E ,  IRWIN SAMUEL N

IPC分类号： G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  G11B15/32

CPC分类号： G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  Y10S388/907 ,  Y10S388/909 ,  Y10S388/93

摘要： In a tape recorder/reproducer apparatus, particularly where a low-inertia highly responsive drive train is used, tape speed control means including a variable-speed motor for the drive train energized through a closed-loop servosystem in which the actual output speed of the motor is monitored by a sensor and compared to a reference, to closely control the motor speed in accordance with the reference. The reference is provided by a freely supported capstan which senses actual tape speed at the tape head and produces an output which is compared to a predetermined reference representative of the desired tape speed, such that the motor is servo controlled to satisfy a predetermined tape speed function.