Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1988-08-10
1989-10-10
Noland, Tom
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
7386259, G01P 1508, G01P 1510
Patent
active
048723436
ABSTRACT:
A matched pair of vibrating beam force transducers for use in an instrument such as an accelerometer, to provide enhanced linearity and common mode tracking, while decreasing the possibility of lock in or cross-talk between the transducers. In a preferred embodiment, first and second transducers are provided, the transducers producing respective first and second output signals having respective first and second frequencies. The transducers are connected in an arrangement in which for a given acceleration, one frequency increases and the other frequency decreases. The first transducer comprises a pair of first beams, and the second transducer comprises a pair of second beams. The beam dimensions are selected such that the Euler buckling constants of the first and second transducers are substantially equal to one another, and such that the first and second frequencies are different from one another when the acceleration is zero and preferably are different from one another throughout the operating range of the accelerometer. In preferred arrangements, the transducer beams have a constant thickness, and the transducers have common axial stiffnesses.
REFERENCES:
patent: 3529470 (1967-05-01), Agar
patent: 3826931 (1974-07-01), Hammond
patent: 4039969 (1977-08-01), Martin
patent: 4144747 (1979-03-01), Datwyler, Jr.
patent: 4215570 (1980-08-01), Eer Nisse
patent: 4297872 (1981-11-01), Ikeda et al.
patent: 4372173 (1983-02-01), Eer Nisse et al.
patent: 4467651 (1984-08-01), Peters et al.
patent: 4479385 (1984-10-01), Koehler
patent: 4535638 (1985-08-01), Eer Nisse et al.
patent: 4669320 (1987-05-01), Simonsen
patent: 4718275 (1988-01-01), Norling
patent: 4750363 (1988-06-01), Norling
patent: 4766768 (1988-08-01), Norling et al.
Cornelius Craig J.
Peters Rex B.
Bell Robert P.
Joike Trevor B.
Noland Tom
Sundstrand Data Control Inc.
Yatsko Michael S.
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