| 发明名称 |
VOICE COIL MOTOR SENSOR AND CONTROLLER |
| 摘要 |
A voice coil motor displacement sensor and a voice coil motor controller that uses said sensor. The sensor configured to apply an alternating measurement signal at a predetermined frequency to a voice coil motor, the sensor configured to use a measure of a voltage across and a current through the voice coil motor to determine its impedance at the predetermined frequency and determine an estimated displacement of said voice coil motor using said impedance and a predetermined displacement-impedance function. |
| 申请公布号 |
US2015229814(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201514615318 |
申请日期 |
2015.02.05 |
| 申请人 |
NXP B.V. |
发明人 |
Macours Christophe Marc;Scarlett Shawn William;Joehren Michael |
| 分类号 |
H04N5/225 |
主分类号 |
H04N5/225 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A voice coil motor displacement sensor, the sensor configured to apply an alternating measurement signal at a predetermined frequency to a voice coil motor, the sensor configured to use a measure of a voltage across and a current through the voice coil motor to determine its impedance at the predetermined frequency and determine an estimated displacement of said voice coil motor using said impedance and a predetermined displacement-impedance function. |
| 地址 |
Eindhoven NL |
