The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 1997
Filed:
Nov. 13, 1995
Abstract
An oscillation gyroscope 10 includes an oscillator 11 comprising an equilateral triangular prism-shaped vibrating body 12 and piezoelectric elements 14a to 14c. An oscillator circuit 26 including an inverse amplification circuit 28 and a phase circuit 30 is connected between the piezoelectric elements 14a, 14b and the piezoelectric element 14c via resistors 22 and 24. The piezoelectric elements 14a and 14b are connected to a differential amplification circuit 32 and the output signal of a addition signal computing unit 34 is added to the output signal of the differential amplification circuit 32 by an adder 33. A signal of the same phase or an inverse phase with respect to the output signal of the phase circuit 30 or an inverse amplification circuit 28 is level-adjusted and outputted from the addition signal computing unit 34. A composite signal made up of the output signal of the differential amplification circuit 32 and the output signal of the addition signal computing unit 34 is detected by a synchronous detector 36 and smoothed by a smoothing circuit 38.