发明名称 |
Regulating circuit as for controlling the speed of a motor |
摘要 |
A regulating circuit for controlling the speed of a rotating disc to provide a constant frequency signal from the disc includes a signal pickup device which moves radially along the disc and provides a velocity signal the frequency of which changes by a factor (Delta)f as the position of the pickup device on the disc changes. A processor receives the velocity signal and produces a control signal in accordance with the factor (Delta)f. A change-over switch provides a fine range voltage and a coarse range voltage which are used to control the speed of the disc in a fine range mode and a coarse range mode, respectively.
|
申请公布号 |
US5298812(A) |
申请公布日期 |
1994.03.29 |
申请号 |
US19910779719 |
申请日期 |
1991.10.18 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
BIGGE, FRANZ |
分类号 |
H02P7/29;G11B19/24;H03D13/00;H03F3/217;(IPC1-7):H03K5/19;H03L7/00 |
主分类号 |
H02P7/29 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|