Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1989-02-16
1989-11-21
Chapman, John
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
G01P 1510
Patent
active
048814083
ABSTRACT:
A compact, low g range accelerometer comprising a support (22), a proof mass (20), flexures (24, 26) for mounting the proof mass to the support, and a force sensing element (40). The proof mass has a single rotational degree of freedom about a hinge axis (H) perpendicular to the accelerometer's sensitive axis (S). The force sensing element is positioned along a line that is normal to the hinge axis and that lies in a plane that is normal to the hinge axis and that passes through the center of gravity (46) of the proof mass. The perpendicular distance between the hinge axis and the force sensing element is less than the distance between the hinge axis and the center of the proof mass. The force sensing element may be parallel to the pendulous axis, to produce an extremely compact accelerometer, or may be oriented at an acute angle with respect to the pendulous axis, such that the line along which the force sensing element is positioned passes through the center of percussion of the proof mass.
REFERENCES:
patent: 3033043 (1962-05-01), Runft
patent: 3351880 (1967-11-01), Wilner
patent: 4215570 (1980-08-01), Eer Nisse
patent: 4244225 (1981-01-01), Greenwood
patent: 4479385 (1984-10-01), Koehler
patent: 4517841 (1985-05-01), Peters et al.
patent: 4751849 (1988-06-01), Paros et al.
Hulsing II Rand H.
Norling Brian L.
Peters Rex B.
Chapman John
Joike Trevor B.
Sundstrand Data Control Inc.
Yatsko Michael S.
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