scholarly journals Frequency tuning of a disk resonator gyro via mass matrix perturbation

2008 ◽  
Author(s):  
David Schwartz ◽  
Dong Joon Kim ◽  
Robert T. M'Closkey
Keyword(s):  
Frequency Tuning ◽  
Mass Matrix ◽  
Matrix Perturbation ◽  
Disk Resonator

scholarly journals Frequency Tuning of a Disk Resonator Gyro Via Mass Matrix Perturbation

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
David Schwartz ◽  
Dong Joon Kim ◽  
Robert T. M’Closkey
Keyword(s):  
High Performance ◽  
Frequency Tuning ◽  
Perturbation Technique ◽  
Mass Matrix ◽  
Resonant Mode ◽  
Matrix Perturbation ◽  
Operating Environment ◽  
Vibratory Gyroscopes ◽  
Resonant Modes ◽  
The Stability

Electrostatic tuning of the resonant modes in microelectromechanical vibratory gyroscopes is often suggested as a means for compensating manufacturing aberrations that produce detuned resonances. In high performance sensors, however, this approach places very stringent requirements on the stability of the bias voltages used for tuning. Furthermore, the bias voltage stability must be maintained over the operating environment, especially with regard to temperature variations. An alternative solution to this problem is to use mass perturbations of the sensor’s resonant structure for resonant mode tuning. This paper presents a new mass perturbation technique that only relies on the sensor’s integrated actuators and pick-offs to guide the mass perturbation process. The algorithm is amenable to automation and eliminates the requirement that the modal nodes of the resonator be identified by direct measurement.

scholarly journals Decoupling of a Disk Resonator From Linear Acceleration Via Mass Matrix Perturbation

2011 ◽  
Vol 134 (2) ◽  
Author(s):  
David Schwartz ◽  
Robert T. M’Closkey
Keyword(s):  
Mass Matrix ◽  
Angular Rate ◽  
Center Of Mass ◽  
Nodal Point ◽  
Linear Acceleration ◽  
Small Mass ◽  
Scale Model ◽  
Matrix Perturbation ◽  
Coupled Modes ◽  
Disk Resonator

Axisymmetric microelectromechanical (MEM) vibratory rate gyroscopes are designed so the central post which attaches the resonator to the sensor case is a nodal point of the two Coriolis-coupled modes that are exploited for angular rate sensing. This configuration eliminates any coupling of linear acceleration to these modes. When the gyro resonators are fabricated, however, small mass and stiffness asymmetries cause coupling of these modes to linear acceleration of the sensor case. In a resonator postfabrication step, this coupling can be reduced by altering the mass distribution on the resonator so that its center of mass is stationary while the operational modes vibrate. In this paper, a scale model of the disk resonator gyroscope (DRG) is used to develop and test methods that significantly reduce linear acceleration coupling.

Frequency Tuning of a Disk Resonator Gyroscope via Stiffness Perturbation

2017 ◽  
Vol 17 (15) ◽  
pp. 4725-4734 ◽  
Author(s):  
Dingbang Xiao ◽  
Dechuan Yu ◽  
Xin Zhou ◽  
Zhanqiang Hou ◽  
Hanhui He ◽  
...  
Keyword(s):  
Frequency Tuning ◽  
Disk Resonator

Spatial and Temporal Frequency Tuning of Motion-in-Depth Aftereffect

2008 ◽  
Vol 128 (7) ◽  
pp. 1015-1022
Author(s):  
Sheng Ge ◽  
Makoto Ichikawa ◽  
Atsushi Osa ◽  
Keiji Iramina ◽  
Hidetoshi Miike
Keyword(s):  
Frequency Tuning ◽  
Temporal Frequency ◽  
Motion In Depth

WAVEGUIDE-COAXIAL RESONATOR WITH WIDE-RANGE FREQUENCY TUNING AND INCREASED Q-FACTOR

2016 ◽  
Vol 75 (10) ◽  
pp. 887-894 ◽  
Author(s):  
R. I. Bilous ◽  
A. P. Motornenko ◽  
I. G. Skuratovskiy ◽  
O. I. Khazov
Keyword(s):  
Frequency Tuning ◽  
Q Factor ◽  
Coaxial Resonator ◽  
Wide Range

The Effect of Weak Background Noise on The Frequency Tuning of Neurons in The Rat Auditory Cortex*

2012 ◽  
Vol 39 (11) ◽  
pp. 1082-1088
Author(s):  
Yin-Ting PENG ◽  
Qing PU ◽  
Xin-De SUN ◽  
Ji-Ping ZHANG
Keyword(s):  
Auditory Cortex ◽  
Background Noise ◽  
Frequency Tuning
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