US 12,436,169 B2
Accelerometer forming a recess enclosing an electromagnetic coil
Paul W. Dwyer, Seattle, WA (US); and Robert J. Meyer, Kirkland, WA (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Oct. 5, 2022, as Appl. No. 17/938,215.
Prior Publication US 2024/0118309 A1, Apr. 11, 2024
Int. Cl. G01P 15/13 (2006.01)
CPC G01P 15/132 (2013.01) 20 Claims
OG exemplary drawing
 
1. An accelerometer system comprising:
a first electromagnetic coil;
a first excitation ring comprising:
a first housing; and
a first cover removably attached to the first housing via a first one or more fasteners, wherein the first housing and the first cover define a first recess configured to house the first electromagnetic coil, and wherein the first housing, the first cover, and the first one or more fasteners are formed from a same material;
a second electromagnetic coil;
a second excitation ring comprising:
a second housing; and
a second cover removably attached to the second housing via a second one or more fasteners, wherein the second housing and the second cover define a second recess configured to house the second electromagnetic coil, and wherein the second housing, the second cover, and the second one or more fasteners are formed from a same material; and
a proof mass assembly positioned between the first excitation ring and the second excitation ring,
wherein the first electromagnetic coil is configured to generate a first magnetic flux that flows through the first excitation ring and maintains a proof mass of the proof mass assembly in a null position, and
wherein the second electromagnetic coil is configured to generate a second magnetic flux that flows through the second excitation ring and maintains the proof mass in the null position.