Effects of phase-drift on measure accuracy in the closed loop of resonant sensors

Chenguang Cai; Shangchun Fan; Weiwei Xing

doi:10.1117/12.717797

28 October 2006 Effects of phase-drift on measure accuracy in the closed loop of resonant sensors

Chenguang Cai, Shangchun Fan, Weiwei Xing

Proceedings Volume 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation; 63580R (2006) https://doi.org/10.1117/12.717797
Event: Sixth International Symposium on Instrumentation and Control Technology, 2006, Beijing, China

Abstract

Every component characteristic in the closed loop of resonant sensors is analyzed. Based on the component characteristics, the relation between the excitation force and the displacement of the resonator is confirmed. And the closed loop differential equation of resonant sensors is build. The phase drift of the closed loop control system is brought into the differential equation. By solving the differential equation with phase error of the closed loop control system, the relation between phase drift and the difference between the resonant frequency of the closed loop and the natural frequency of the resonator is gained. It is found that the measure error between the resonator natural frequency and the resonant frequency of the closed loop is proportional to tangent of the phase drift of the closed loop control system. The proportion coefficient is negative -3dB bandwidth of the resonator.

Citation Download Citation

Chenguang Cai, Shangchun Fan, and Weiwei Xing "Effects of phase-drift on measure accuracy in the closed loop of resonant sensors", Proc. SPIE 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation, 63580R (28 October 2006); https://doi.org/10.1117/12.717797

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available