Читать книгу Whole-Angle MEMS Gyroscopes - Doruk Senkal, Andrei M. Shkel - Страница 14

Coriolis Vibratory Gyroscopes (CVGs) are mechanical transducers that detect angular rotation around a particular axis. In its most fundamental form, a CVG consists of two or more mechanically coupled vibratory modes, a forcing system to induce vibratory motion and a sensing system to detect vibratory motion. Angular rotation can be detected by sensing the energy transfer from one vibratory mode to another in the presense of Coriolis forces, Figure 1.1.

Historically, first examples of CVGs can be found in the Aerospace Industry, which were primarily used for navigation and platform stabilization applications. Later, advent of Micro‐electromechanical System (MEMS) fabrication techniques brought along orders of magnitude reduction in cost, size, weight, and power (CSWaP), which made CVGs truly ubiquitous. Today CVGs are used in a wide variety of civilian applications, examples include:

 Industrial applications, such as robotics and automation;

 Automobile stabilization, traction control, and roll‐over detection;

 Gesture recognition and localization in gaming and mobile devices;

 Optical image stabilization (OIS) of cameras;

 Head tracking in Augmented Reality (AR) and Virtual Reality (VR);

 Autonomous vehicles, such as self‐driving cars and Unmanned Aerial Vehicles (UAVs).