Acceleration "G" compensated for VCOCXO based on digital controller

Author

Shan, QingXiao ; Jun, Yang ; Chen, JianYun ; Qian, Tang ; Ji, LongZhe

Author_Institution

Mechatron. & Autom. Sch., Nat. Univ. of Defense Technol., Changsha, China

fYear

2011

fDate

2-5 May 2011

Firstpage

1

Lastpage

4

Abstract

The paper proposes a digital compensation by imposing real-time compensation voltage to Vin Pin of VCOXCO while device vibrating. The embedded digital compensating circuit includes a MEMS three-axes acceleration sensor, a FPGA and a D/A converter. G-sensitivity vector can be computed based on the MEMS sensor. A proportion digital compensation model is built to generate voltage which can compensate frequency drift and perturbation caused by acceleration.

Keywords

compensation; crystal oscillators; digital control; microsensors; voltage control; voltage-controlled oscillators; D/A converter; FPGA; G-sensitivity vector; MEMS three-axes acceleration sensor; VCOCXO; digital compensation; digital controller; embedded circuit; frequency drift; perturbation; real-time compensation voltage; Acceleration; Crystals; Field programmable gate arrays; Micromechanical devices; Oscillators; Sensitivity; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International

Conference_Location

San Fransisco, CA

ISSN

1075-6787

Print_ISBN

978-1-61284-111-3

Type

conf

DOI

10.1109/FCS.2011.5977758

Filename

5977758