摘要:
An inertial device is disclosed. In one embodiment, the device comprises a support structure and first and second spring mass systems coupled to the support structure. The first spring mass system comprises first and second time domain digital triggers configured to measure rotation and displacement respectively of the support structure about a first axis and along an orthogonal second axis. The second spring mass system comprises third and fourth time domain digital triggers configured to measure acceleration and displacement respectively of the support structure about the second axis and along the first axis.
摘要:
Gyromètre comportant un substrat et une masse inertielle (2) suspendue au dessus du substrat, la masse inertielle (2) comportant une partie d'excitation (6) et une partie de détection (8), des moyens de mise en mouvement de la partie d'excitation (6) dans au moins une direction (X) contenue dans le plan de ladite masse inertielle (2), et des moyens de détection capacitifs du mouvement de ladite partie de détection (8) en dehors du plan de ladite masse, lesdits moyens de détection capacitifs comportant au moins une électrode suspendue (16), disposée au-dessus de la partie de détection (8) qui est située à l'opposé du substrat de sorte à former un condensateur à capacité variable avec ladite partie de détection (8, 108), ladite électrode (16) étant maintenue au-dessus de ladite partie de détection (8) par au moins un pilier (22) traversant la masse inertielle (2).
摘要:
A microelectromechanical gyroscope (10) with detection along a vertical axis is provided with a detection structure (10) having a movable structure (12), suspended above a substrate (13) so as to perform, as a function of an angular velocity (Ωz) around the vertical axis a sense movement along a first horizontal axis (x). The movable structure has at least one drive mass (14) internally defining a window (16), elastically coupled to a rotor anchor (20'), at an anchoring region (A), through elastic anchoring elements (21); at least one bridge element (18), rigid and of a conductive material, cantilevered suspended and extending within the window along the first horizontal axis, elastically coupled to the drive mass; movable electrodes (23), carried integrally by the bridge element with extension along a second horizontal axis (y). The detection structure (10) also has stator electrodes (28, 29), arranged in the window and interdigitated with the movable electrodes, at a certain separation distance below the bridge element (18), which extends longitudinally above the same stator electrodes and the movable electrodes.
摘要:
Systems and methods are described herein for detecting and measuring inertial parameters, such as acceleration. In particular, the systems and methods relate to vibratory inertial sensors implementing time-domain sensing techniques. Within a composite mass sensor system, a sense mass may oscillate at a frequency different from its actuation frequency, allowing flexibility when integrating the sensor into drive systems without sacrificing sensitivity.