Title :
Mechanical-thermal noise in vibrational gyroscopes
Author :
Leland, Robert P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alabama Univ., Tuscaloosa, AL, USA
Abstract :
We derive an expression for the angle random walk for a vibrational gyro due to mechanical thermal noise. We compare the noise effects on the output signal to the effect of the rotation rate, rather than ´back up´ the noise to the rotation rate. We avoid ambiguity concerning the bandwidth, and show a factor of two reduction in noise power due to synchronous demodulation
Keywords :
feedback; gyroscopes; micromechanical devices; thermal noise; angle random walk; feedback control; high accuracy gyroscopes; mechanical thermal noise; output signal; synchronous demodulation; vibrational gyroscopes; Bandwidth; Demodulation; Displacement control; Drives; Force measurement; Gyroscopes; Micromechanical devices; Noise reduction; Rotation measurement; Vibration measurement;
Conference_Titel :
American Control Conference, 2001. Proceedings of the 2001
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6495-3
DOI :
10.1109/ACC.2001.946424
