Читать книгу Whole-Angle MEMS Gyroscopes - Doruk Senkal, Andrei M. Shkel - Страница 15

CVGs can be divided into two broad categories based on the gyroscope's mechanical element [1]: degenerate mode (i.e. ‐axis) gyroscopes, which have – symmetry ( of 0 Hz), and nondegenerate mode gyroscopes, which are designed intentionally to be asymmetric in and modes (). Degenerate mode ‐axis gyroscopes offer a number of unique advantages compared to nondegenerate vibratory rate gyroscopes, including higher rate sensitivity, ability to implement whole‐angle mechanization with mechanically unlimited dynamic range, exceptional scale factor stability, and a potential for self‐calibration.

Figure 1.1 Coriolis Vibratory Gyroscopes, in their simplest form, consist of a vibrating element with two or more mechanically coupled vibratory modes. Illustration shows a ‐axis gyroscope and its vibratory modes along ‐ and ‐axis.