发明名称 |
DEVICE AND METHOD FOR MEASURING PITCH AND ROLL TORQUES |
摘要 |
Embodiments of the invention provide a device for measuring pitch and roll torques. The device comprises a sensor plate having a horizontal cross member, a vertical cross member and a surrounding member connecting ends of the horizontal and vertical cross members, wherein the horizontal cross member and the vertical cross member intersect each other at a centre region of the sensor plate; a VCM coil attached to the sensor plate and configured to generate a pitch and a roll torque when an electrical current is applied to the VCM coil; a first strain gauge attached to a surface of the horizontal cross member and configured to detect a horizontal strain caused by the pitch and roll torques; and a second strain gauge attached to a surface of the vertical cross member and configured to detect a vertical strain caused by the pitch and roll torques. |
申请公布号 |
US2017110148(A1) |
申请公布日期 |
2017.04.20 |
申请号 |
US201615170198 |
申请日期 |
2016.06.01 |
申请人 |
MMI HOLDINGS LIMITED |
发明人 |
Su Steven;Wei Cheng Le |
分类号 |
G11B19/04 |
主分类号 |
G11B19/04 |
代理机构 |
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代理人 |
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主权项 |
1. A device for measuring pitch and roll torques of a hard disk drive (HDD) voice coil motor (VCM), the device comprising:
a sensor plate having a horizontal cross member, a vertical cross member and a surrounding member connecting ends of the horizontal member and the vertical member, wherein the horizontal cross member and the vertical cross member intersect each other at a centre region of the sensor plate; a VCM coil attached to the sensor plate and configured to generate a pitch torque and a roll torque when an electrical current is applied to the VCM coil; a first strain gauge attached to a surface of the horizontal cross member and configured to detect a horizontal strain caused by the pitch and roll torques generated by the VCM coil; and a second strain gauge attached to a surface of the vertical cross member and configured to detect a vertical strain caused by the pitch and roll torques generated by the VCM coil. |
地址 |
Singapore SG |