About 44 results
https://drivepatents.com/patents/969973 · 17 Sep 2014
Various embodiments include feedback circuits for tuning the drive modes of a shell-type gyroscope, while other embodiments include separate circuits for tuning the sense mode of a shell-type gyroscope to reduce or avoid quadrature errors. Still other embo...
https://drivepatents.com/patents/971758 · 6 Aug 2014
Provided is a micro electro mechanical system (MEMS) resonating accelerometer. The MEMS resonating accelerometer according to the present invention comprises: a first inertial mass; a second inertial mass which is spaced at a predetermined distance from th...
https://drivepatents.com/patents/976769 · 2 Apr 2014
An integrated detection structure (1) has a first inertial mass (2) and a second inertial mass (2'), each of which is elastically anchored to a substrate (20) and has a linear movement along a first horizontal axis (x), a first detection movement of rotati...
https://drivepatents.com/patents/977354 · 19 Mar 2014
An angular acceleration detection device (1) includes a rotating weight (2), a fixed portion (4), a support beam (3), and a detection portion (5). The rotating weight (2) is rotatable about a Z-axis with respect to the fixed portion (4) by action of an ine...
https://drivepatents.com/patents/979166 · 29 Jan 2014
A vibrator element (2) includes a pair of first and second drive vibrating arms (441, 442; 443, 444) that extend in opposite directions from a base portion (41, 431, 432) ; a first weight (12a ... 12s) that is spaced from a tip of at least one of the first...
https://drivepatents.com/patents/981449 · 4 Dec 2013
The invention relates to gyroscope equipment. The axially symmetrical Coriolis vibratory gyroscope comprises a thin-walled resonator with a hemispherical or cylindrical or toroidal form, said resonator being fixed at the center to a support and being forme...
https://drivepatents.com/patents/983264 · 16 Oct 2013
A sensor device (1) includes a first sensor element (30z) which detects an angular velocity around z axis and a second sensor element (30x) which detects an angular velocity around x axis. When the drive frequency of the first sensor element (30z) is set t...
https://drivepatents.com/patents/985328 · 27 Mar 2013
The method involves obtaining a modified command to be applied to an operational parameter e.g. amplitude, of a gyroscope by introducing a sinusoidal disruption in a current command of the gyroscope (11), and applying the modified command as the current co...
https://drivepatents.com/patents/995847 · 28 Nov 2012
The invention relates to measuring devices used in measuring angular velocity, and, more specifically, to oscillating micro-mechanical sensors of angular velocity. In the sensor of angular velocity according to the present invention seismic masses (1), (2)...
https://drivepatents.com/patents/999104 · 22 Aug 2012
A physical quantity sensor includes: a substrate; a first displacement member and a second displacement member disposed in a spatial plane on the substrate and having rotation shafts, respectively; fixed electrodes disposed on the substrate at positions op...