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http://dx.doi.org/10.5139/JKSAS.2005.33.8.065

Dither-stripping with the differential of dither rate signal for a ring laser gyroscope  

Shim, Kyu-Min (국방과학연구소 기술연구본부 1부)
Chung, Tae-Ho (국방과학연구소 기술연구본부 1부)
Lim, Hoo-Jang (두산인프라코어 정밀센서팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.8, 2005 , pp. 65-74 More about this Journal
Abstract
It is required for getting the ring laser gyro output purely related to the input rotation to eliminate the output of the modulated angular vibration from the ring laser signal. In this paper we discuss the dither stripping methods of compensating the ring laser signal by converting the rate signal of dither detector from voltage to frequency for a dither type ring laser gyro. We discuss the differential methods for getting rid of the offset of the V-F signal. And we develope the methods of compensating the phase differences between the ring laser signals and the V-F differential signals by using analog integrator and digital time delays. And also, we develope the gain calculation method by comparing the standard deviations of the ring laser signals with V-F differential signals. We implemented these methods and analyzed the effectiveness of these methods by comparing the dither trapping methods.
Keywords
Ring Laser Gyro; Dither-stripping;
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