Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1995-04-19
1997-12-30
Chilcot, Richard
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
7350408, 7350416, G01P 904
Patent
active
057032920
ABSTRACT:
Electronics for use in Coriolis and other sensors for reducing errors in the sensor output signal. The electronics includes an off-frequency drive scheme for reducing in-band drive signal coupling to the output signal and techniques for reducing errors in the sensor output signal due to quadrature and phase shift. The off-frequency drive scheme includes a frequency translation circuit in the excitation feedback loop of a sensor system to suppress components of the sensor drive signal at a predetermined frequency so that coupling of the drive signal to the sensor output signal can be readily removed by conventional filtering techniques. The sensor system includes a nonlinear input transducer for converting the drive signal to a force signal such that the force signal has a component at the predetermined frequency while the drive signal does not. A tuned circuit amplifies and filters the frequency shifted output signal of the translation circuit to provide the drive signal. Also provided is a sense bias generator including a tuned circuit for amplifying the available bias supply voltage to enhance sensitivity.
REFERENCES:
patent: 4144764 (1979-03-01), Hartzell, Jr.
patent: 4336718 (1982-06-01), Washburn
patent: 4345474 (1982-08-01), Deval
patent: 4566327 (1986-01-01), Rider
patent: 4590801 (1986-05-01), Mehav
patent: 4674331 (1987-06-01), Watson
patent: 4884446 (1989-12-01), Ljung
patent: 4930351 (1990-06-01), Macy et al.
patent: 5055759 (1991-10-01), Miyahara
patent: 5094537 (1992-03-01), Karpinski, Jr.
patent: 5148236 (1992-09-01), Blake et al.
patent: 5187664 (1993-02-01), Yardley et al.
patent: 5233351 (1993-08-01), Gregory et al.
patent: 5241861 (1993-09-01), Hulsing, II
patent: 5245347 (1993-09-01), Bonta et al.
patent: 5265470 (1993-11-01), Kaiser et al.
patent: 5285686 (1994-02-01), Peters
patent: 5293137 (1994-03-01), Tavis et al.
patent: 5311093 (1994-05-01), Mukohjima
patent: 5317919 (1994-06-01), Awtrey
patent: 5388458 (1995-02-01), Weinberg et al.
patent: 5392650 (1995-02-01), O'Brien et al.
patent: 5534740 (1996-07-01), Higuchi et al.
Chilcot Richard
Noori Max H.
The Charles Stark Draper Laboratory Inc.
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