Low Cost Method for FOG Eigenfrequency Measurement

摘要：

A low-cost approach was advanced to solve the problem of measuring fiber optic gyroscope (FOG) eigenfrequency. Based on the principles of square wave modulation and demodulation in digital closedloop FOG,the modulation of phase modulator had been done using fourfold eigenfrequency square wave. Analysis of the demodulated signal obtained the relation between photoelectric detector output wave pattern and the frequency of modulation square wave,so the problem of eigenfrequency measuring was transformed into the problem of pulse measuring and the complex programming software and expensive measuring devices was avoided. Experimental results show that the accuracy could be up to 0.075KHz when FOG eigenfrequency was measured manually using this method.

关键词： FOG eigenfrequency square-wave modulation phase modulator

作者: Wang Xi Gao Yan-bin Huo Liang

作者单位: Automation College,Harbin Engineering University,No.145 Nantong Street,Nangang District,Harbin,China

会议类型: 国际会议

会议名称: 2011 International Conference on Opto-Electronics Engineering and Information Science(2011光电电子工程与信息科学国际会议 ICOEIS 2011)

会议地点: 西安

会议语种:英文

页码: 790-793

在线出版日期: 2011-12-23（万方平台首次上网日期，不代表论文的发表时间）