A 3D model for analyzing thermal transient effects in fiber gyro coils

Li, Maochun; Liu, Tiegen; Zhou, Youwei; Jiang, Junfeng; Hou, Li; Wang, Jiajia; Yao, Xiling

doi:10.1117/12.755306

Cited by 8 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An expression of the rate error 𝛺(𝑡) caused by the thermal transients is proposed in 3-D cylindrical coordinate for accurately calculating the contribution of each point inside the fiber coil to the nonreciprocity induced by all possible transient temperature gradients in our early work [4] [5] , as following.…”

Section: Improvement Analysis Of Temperature Stability In Fogsmentioning

confidence: 99%

Temperature stability of a hollow-core microstructure fiber optic gyroscope

Li¹,

Zhao²,

Yan³

et al. 2022

Advanced Sensor Systems and Applications XII

View full text Add to dashboard Cite

In this paper, the theoretical analysis of hollow-core microstructure fiber for improving the temperature stability of fiber optic gyroscope (FOG) is carried out. The analysis shows that the thermally induced Shupe error can be reduced by a factor of about 23 in theory in a hollow-core microstructure FOG. A FOG prototype is constructed by utilizing a 300mlong 7-cell bandgap-guided hollow-core microstructure fiber, and its temperature stability is compared with that of traditional FOG under the same specification conditions. The experimental results exhibit that the hollow-core microstructure fiber in use can promote the temperature stability of FOG by 2.5 times.

show abstract

Section: Improvement Analysis Of Temperature Stability In Fogsmentioning

confidence: 99%

Temperature stability of a hollow-core microstructure fiber optic gyroscope

Li¹,

Zhao²,

Yan³

et al. 2022

Advanced Sensor Systems and Applications XII

View full text Add to dashboard Cite

show abstract

“…With the origin of the coordinate located at the fiber coil midpoint s = L/2 (L is the total fiber length), the nonreciprocal phase shift e ϕ ∆ induced by the Shupe effect in the singlemode fiber can be expressed as [12][13][14]:…”

Section: Pointing Error Caused By Time-dependent Radial Thermal Gradientmentioning

confidence: 99%

A novel method for determining and improving the quality of a quadrupolar fiber gyro coil under temperature variations

Li¹,

Zhang²,

Liu³

et al. 2013

Opt. Express

Self Cite

View full text Add to dashboard Cite

We introduce a parameter called pointing error thermal sensitivity (PETS) for quantitatively determining the quality of a quadrupolar (QAD) fiber coil under radial temperature variations. We show both analytically and experimentally that the pointing error of a fiber gyro incorporating the fiber coil is linearly proportional to the final radial thermal gradient on the coil, with PETS as the proportional constant. We further show that PETS is linearly proportional to another parameter called effective asymmetric length of the coil. By thermally inducing different radial thermal gradients on the fiber coil and measuring the corresponding pointing errors in a gyroscopic measurement setup, we can confidently determine the PETS of the fiber coil and its associated effective asymmetric length caused by imperfections in coil winding. Consequently, we are able to precisely trim the coil to achieve best thermal performance.

show abstract

“…As a solution to this problem, symmetric coil-winding methods are suggested [12]. A commonly preferred method is the "quadrupole" winding pattern, yet other novel patterns and methods to overcome non-reciprocity errors are being studied in the literature [13][14][15]. The errors due to temperature effects in a FOG sensor are able to be analytically modeled, and these errors can be compensated from the sensor output by employing proper algorithms [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis and Multiscale Modeling of the Dynamics of a Fiber-Optic Coil

Kahveci

Gençoğlu

Yalçınkaya

2022

Sensors

View full text Add to dashboard Cite

Fiber-optic gyroscopes (FOGs) are common rotation measurement devices in aerospace applications. They have a wide range of diversity in length and in the winding radius of the coil to meet system requirements. Every dimensional parameter in the coil influences the dynamic response of the system, eventually leading to measurement errors. In order to eliminate the errors and to qualify the system, after the design and production stages, a deep and comprehensive testing procedure follows. In this study, the dynamic behavior of a quadrupole wound fiber-optic coil is investigated. First, pre-wound fiber-optic coils are tested with an impact modal test, where the mode shapes and natural frequencies are determined with structural data acquisition. For the modal analysis, a finite element (FE) model is developed where a representative volume element (RVE) analysis is also included to properly consider the influence of the microstructure. The experimental and numerical results are compared and validated. Moreover, an estimation model is proposed for a type of coil with different fiber lengths. Finally, the estimated coil set is produced and tested employing the same methodology in order to illustrate the capacity of the developed framework.

show abstract

A 3D model for analyzing thermal transient effects in fiber gyro coils

Cited by 8 publications

References 0 publications

Temperature stability of a hollow-core microstructure fiber optic gyroscope

Temperature stability of a hollow-core microstructure fiber optic gyroscope

A novel method for determining and improving the quality of a quadrupolar fiber gyro coil under temperature variations

Experimental Analysis and Multiscale Modeling of the Dynamics of a Fiber-Optic Coil

Contact Info

Product

Resources

About