Claims
- 1. A force rebalance accelerometer, comprising:
- a proof mass;
- a mounting ring;
- a pair of flexures for flexibly connecting the proof mass to the mounting ring;
- means for returning the proof mass to a null position, said returning means including a permanent magnet having opposing bonding surfaces and one or more excitation rings, one surface of said magnet spaced adjacent to one of said excitation rings;
- means for bonding said one of said bonding surfaces of said magnet to one of said excitation rings, said bonding means including means for spacing said bonding surface of said magnet, from said one of said excitation rings forming a pedestal and defining an interface; and
- means for compensating for thermal stress at said interface.
- 2. A force rebalance accelerometer as recited in claim 1, wherein said spacing means includes a noncompliant epoxy which covers a predetermined portion of said bonding surface.
- 3. A force rebalance accelerometer as recited in claim 1, wherein said compensating means includes a compliant epoxy.
- 4. A force rebalance accelerometer as recited in claim 3, wherein said compliant epoxy is formed in the shape of a ring and disposed concentric relative to said noncompliant epoxy.
- 5. A force rebalance accelerometer as recited in claim 4, further including a pole piece and means for bonding said pole piece to said bonding surfaces of said magnet, defining a second interface.
- 6. A force rebalance accelerometer as recited in claim 5, wherein said bonding means includes means for reducing the stress due to temperature at said second interface.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of copending patent application Ser. No. 08/184,527, filed on Jan. 19, 1994.
US Referenced Citations (23)
Foreign Referenced Citations (1)
Number |
Date |
Country |
407224 |
Mar 1969 |
AUX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
184527 |
Jan 1994 |
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