Abstract: An oscillatory gyroscope having an improved detecting sensitivity. The oscillatory gyroscope includes an elastic metal body in the form of a rectangular column having first to fourth surfaces. The elastic metal body includes a distal portion having a distal through hole extending from the second surface to the fourth surface and a proximal portion having a second through hole extending from the first surface to the third surface. Two first ferroelectric substance films are provided on the first and third surfaces in the distal portion. Two second ferroelectric substance films are provided over the second and fourth surfaces in the proximal portion. First and second electrodes are provided on each of the first ferroelectric substance films, and third and fourth electrodes are provided on the respective second ferroelectric substance films. Voltages of reverse polarities are applied to the first and second electrodes.

Abstract: A highly sensitive oscillatory gyroscope that includes an elastic metal body in the form of a rectangular column having first to fourth sides. The elastic metal body includes a pair of end segments located at its ends and a pair of middle segments located at an upper middle portion and a lower middle portion of the elastic metal body. Each end segment has an opening extending from the second side to the fourth side, and each middle segment has an opening extending from the first side to the third side. A first ferroelectric substance film is provided on each of the first and third sides at the end segments. A second ferroelectric substance film is provided on each of the second and fourth sides at the middle segments. First and second electrodes are provided on each first ferroelectric substance film at each end segment. Third and fourth electrodes are provided on each second ferroelectric substance film at each middle segment.