发明名称 |
Self-sensing active-damping voice coil |
摘要 |
A control circuit creates a self-sensing active-damping voice coil. The control circuit includes a current sensor coupled to a voice coil. A first filter is coupled to the current sensor to create an error voltage that is proportional to the integral of an external acceleration applied to the voice coil. A second filter with a lead-lag component is coupled to the error voltage to create a voltage applied to the voice coil that substantially cancels the external acceleration below a pole defined by a lead-lag component thereby damping the external accelerations.
|
申请公布号 |
US7633839(B2) |
申请公布日期 |
2009.12.15 |
申请号 |
US20040923524 |
申请日期 |
2004.08.20 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
HANKS DARWIN MITCHEL |
分类号 |
G11B7/00 |
主分类号 |
G11B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|