发明名称 |
MEMS GYRO MOTOR LOOP FILTER |
摘要 |
A motor drive loop circuit for a micro-electro-mechanical system (MEMS) gyroscope is provided. The motor drive loop circuit includes a motor configured to drive a proof mass in the MEMS gyroscope and a minus-90-degree phase-shift twin-tee notch filter. The motor is configured to cause the proof mass to oscillate at a primary-proof-mass mode. The a minus-90-degree phase-shift twin-tee notch filter is configured to: provide a minus 90 degree phase at a motor resonance frequency equal to the primary-proof-mass mode; suppress resonance at undesired mechanical modes of the motor during a startup of the motor; and provide gain at the motor resonance frequency. |
申请公布号 |
US2016010994(A1) |
申请公布日期 |
2016.01.14 |
申请号 |
US201414325674 |
申请日期 |
2014.07.08 |
申请人 |
Honeywell International Inc. |
发明人 |
Ackerman John F. |
分类号 |
G01C19/5776 |
主分类号 |
G01C19/5776 |
代理机构 |
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代理人 |
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主权项 |
1. A motor drive loop circuit for a micro-electro-mechanical system (MEMS) gyroscope, the motor drive loop circuit comprising:
a motor configured to drive a proof mass in the MEMS gyroscope, the motor configured to cause the proof mass to oscillate at a primary-proof-mass mode; and a minus-90-degree phase-shift twin-tee notch filter configured to: provide a minus 90 degree phase at a motor resonance frequency equal to the primary-proof-mass mode; suppress resonance at undesired mechanical modes of the motor during a startup of the motor; and provide gain at the motor resonance frequency. |
地址 |
Morristown NJ US |