闭环模型及参数对光纤陀螺动态误差特性的影响
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- 英文论文题名：Influence of closed-loop model and parameters on characteristics of FOG dynamic errors
- 论文作者：张书颖 ; 陈馨 ; 林毅
- 英文论文作者：ZHANG Shu-ying ; CHEN Xin ; LIN Yi ; Tianjin Navigation Instrument Research Institute
- 年：2016
- 作者机构：天津航海仪器研究所;
- 论文关键词：闭环模型 ; 输出误差 ; 稳定性条件 ; 幅频特性曲线 ; 谐振尖峰
- 英文论文关键词：closed-loop model ; output error ; system stability ; magnitude-frequency curve ; resonant peak
- 会议召开时间：2016-09-27
- 会议录名称：2016年光学陀螺及系统技术发展与应用研讨会论文集
- 语种：中文
- 分类号：TH824.3
- 学会代码：ZGGZ
- 会议名称：2016年光学陀螺及系统技术发展与应用研讨会
- 会议地点：中国江西九江
- 主办单位：中国惯性技术学会
- 学会名称：中国惯性技术学会
- 页数：8
- 文件大小：1310k
- 原文格式：D
- 会议级别：全国
摘要
陀螺在振动过程中输出在地球转速分量的基础上会叠加一个不为零的偏移小量,此为陀螺振动的输出误差项。当陀螺采用两种不同闭环模型时,同一陀螺该误差量大小不同。因此,选择较优的闭环模型同时调整合适的闭环参数对于解决陀螺的振动问题十分重要。首先,对比两种闭环模型的不同之处及其稳定性条件;其次分析陀螺在振动过程中误差项的产生原因及不同模型产生误差项大小不同的原因;然后仿真分析不同闭环模型下陀螺振动的输出。仿真及具体的实验结果表明选择较优的闭环模型使得模型闭环积分延迟时间越短,同时在保证闭环幅频特性曲线不出现谐振尖峰的情况下闭环增益尽可能大,可以减小陀螺的输出误差项,从而改善陀螺的振动性能。
In process of vibration, fiber optic gyroscope(FOG) output is superposition of earth rate components and a small offset. The small offset is error term of FOG output. The amount of output error is different in two kinds of FOG closed-loop model. Therefore, it is important for solving vibration problem to select the optimal closed-loop model and adjust appropriate closed-loop parameters. Firstly, difference and system stability were compared in the two kinds of FOG closed-loop model. Secondly, the cause of the output error term and the different amount of the error term in different closed-loop models were analyzed in vibration environment. Then FOG outputs in process of vibration with different closed-loop model were analyzed by simulation. The simulation and final experiment show that the error of FOG will be brought into a small offset under vibration with a optimal closed-loop model which shorten time of integration. It also shows that the larger closed-loop gain with non-resonant peak closed-loop magnitude-frequency curve can also decrease FOG output error. Thus, it is important to solve the vibration problem of FOG by improving the closed-loop model and appropriate closed-loop parameters.
In process of vibration, fiber optic gyroscope(FOG) output is superposition of earth rate components and a small offset. The small offset is error term of FOG output. The amount of output error is different in two kinds of FOG closed-loop model. Therefore, it is important for solving vibration problem to select the optimal closed-loop model and adjust appropriate closed-loop parameters. Firstly, difference and system stability were compared in the two kinds of FOG closed-loop model. Secondly, the cause of the output error term and the different amount of the error term in different closed-loop models were analyzed in vibration environment. Then FOG outputs in process of vibration with different closed-loop model were analyzed by simulation. The simulation and final experiment show that the error of FOG will be brought into a small offset under vibration with a optimal closed-loop model which shorten time of integration. It also shows that the larger closed-loop gain with non-resonant peak closed-loop magnitude-frequency curve can also decrease FOG output error. Thus, it is important to solve the vibration problem of FOG by improving the closed-loop model and appropriate closed-loop parameters.
引文
[1]Lefevre H C.The fiber-optic gyroscope:achievement and perspective[J].Gyroscope and Navigation,2013,3:223-226.
[2]Lefevre H C.et al.Latest Advaneesin Fiber Optic Gyroscope Technology at Photonetics[C]//Proc.SPIE2292,156(1994).
[3]张桂才.光纤陀螺原理与技术,国防工业出版社,2008.
[4]PAVLATH G.Closed-loop fiber optic gyros[C]//Fiber Optic Gyros:20th Anniversary Conference,1996.
[5]Celikel O,San S E.Establishment of all digital closed-loop interferometric fiber-optic gyroscope and scale factor comparison for open-loop and all digital closed-loop configurations[J].Sensors Journal IEEE,2009,9(2):176-186.
[6]吕品.光纤陀螺的随机误差性能评价方法研究[J].仪器仪表学报,2014,35(2):412-418.
[7]潘雄.反馈延迟对光纤陀螺振动误差特性的影响[J].红外与激光工程,2014,43(8):2608-2612.
[2]Lefevre H C.et al.Latest Advaneesin Fiber Optic Gyroscope Technology at Photonetics[C]//Proc.SPIE2292,156(1994).
[3]张桂才.光纤陀螺原理与技术,国防工业出版社,2008.
[4]PAVLATH G.Closed-loop fiber optic gyros[C]//Fiber Optic Gyros:20th Anniversary Conference,1996.
[5]Celikel O,San S E.Establishment of all digital closed-loop interferometric fiber-optic gyroscope and scale factor comparison for open-loop and all digital closed-loop configurations[J].Sensors Journal IEEE,2009,9(2):176-186.
[6]吕品.光纤陀螺的随机误差性能评价方法研究[J].仪器仪表学报,2014,35(2):412-418.
[7]潘雄.反馈延迟对光纤陀螺振动误差特性的影响[J].红外与激光工程,2014,43(8):2608-2612.