Title :
Adaptive mismatch compensation for vibratory gyroscopes
Author :
Fu Zhang ; Keikha, Ehsan ; Shahsavari, Behrooz ; Horowitz, Roberto
Author_Institution :
Dept. of Mech. Eng., Univ. of California at Berkeley, Berkeley, CA, USA
Abstract :
This paper presents an online adaptive controller to compensate damping and stiffness frequency mismatches in vibratory gyroscopes. This adaptive controller is running together with the method of averaging. The adaptive controller first estimates the effective damping and stiffness frequency mismatches using least square method and then compensates these estimated mismatches in an online fashion. Simulation results show that the proposed adaptive mismatch compensation controller can eliminate the effects of damping and stiffness frequency mismatches on quadrature oscillation, precession angle oscillation and precession angle drift very effectively.
Keywords :
adaptive control; compensation; damping; frequency estimation; gyroscopes; least squares approximations; sensors; vibration measurement; damping compensation; damping estimation; least square method; online adaptive mismatch compensation controller; precession angle drift; precession angle oscillation; quadrature oscillation; stiffness frequency mismatch estimation; vibratory gyroscope; Adaptive control; Damping; Equations; Frequency control; Gyroscopes; Least squares approximations; Oscillators;
Conference_Titel :
Inertial Sensors and Systems (ISISS), 2014 International Symposium on
Conference_Location :
Laguna Beach, CA
DOI :
10.1109/ISISS.2014.6782514
