Active cover accelerometer
First Claim
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1. A pendulous accelerometer comprising:
- a housing;
a frame fixed to said housing, said frame including first and second substantially planar covers and a substantially planar internal frame member, said first cover substantially parallel with and spaced away from said second cover and said internal frame member suspended between said first and second covers;
a first pedestal portion extending between a first side of said internal frame member and a first side of said first cover;
a second pedestal portion extending between a second side of said internal frame member and a first side of said second cover;
a reaction mass rotatably attached external to said internal frame member; and
means for measuring a displacement of said reaction mass.
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Abstract
A pendulous accelerometer wherein the active reaction mass is pendulously mounted external to a fixed support structure and may include sensor cover or covers in the total active reaction mass.
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Citations
7 Claims
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1. A pendulous accelerometer comprising:
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a housing; a frame fixed to said housing, said frame including first and second substantially planar covers and a substantially planar internal frame member, said first cover substantially parallel with and spaced away from said second cover and said internal frame member suspended between said first and second covers; a first pedestal portion extending between a first side of said internal frame member and a first side of said first cover; a second pedestal portion extending between a second side of said internal frame member and a first side of said second cover; a reaction mass rotatably attached external to said internal frame member; and means for measuring a displacement of said reaction mass. - View Dependent Claims (2, 3, 4)
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5. A method of manufacturing a pendulous accelerometer, comprising the steps of:
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forming a frame comprising first and second substantially planar covers and a substantially planar internal frame member, said first cover formed substantially parallel with and spaced away from said second cover and said internal frame member suspended between said first and second covers; forming a first pedestal portion extending between a first side of said internal frame member and a first side of said first cover; forming a second pedestal portion extending between a second side of said internal frame member and a first side of said second cover; fixing said frame to a housing; mounting a reaction mass external to said internal frame member and rotatably attached to said internal frame member; and mounting a detector between said internal frame member and said reaction mass, said detector measuring a displacement of said reaction mass relative to said internal frame member. - View Dependent Claims (6, 7)
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Specification