Rotational-rate sensor

Details Rotational-rate sensor Rotational-rate sensor

2005-08-09

2005-08-09

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

06927568

ABSTRACT:
A rotational-rate sensor is provided which includes a detecting element, a circuit portion, an airtight container and an elastic body, in which: the synthetic resonance-frequency of a machine system of the rotational-rate sensor and the frequency of an applied rotational rate which corresponds to the difference between the resonance frequency in the direction where the detecting element is driven and the resonance frequency of the detecting element in the direction where the detecting element detects a rotational rate, are each lower than each of the resonance frequency in the direction where the detecting element is driven and the resonance frequency in the direction where the detecting element detects a rotational rate; and the cut-off frequency of the low-pass filter in the circuit portion is lower than each of the synthetic resonance-frequency and the frequency of the applied rotational rate.

REFERENCES:
patent: 5587529 (1996-12-01), Iguchi et al.
patent: 5817940 (1998-10-01), Kobayashi et al.
patent: 5986549 (1999-11-01), Teodorescu
patent: 6389897 (2002-05-01), Tani et al.
patent: 0 660 081 (1995-06-01), None
patent: 1 091 189 (2001-04-01), None
patent: 11-287658 (1999-10-01), None

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