采用等效正弦信号输入的光纤陀螺带宽测试方法
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- 英文论文题名：A measuring method of FOG's bandwidth using equivalent input phase signal
- 论文作者：陈馨 ; 林毅 ; 张书颖 ; 左文龙
- 英文论文作者：CHEN Xin ; LIN Yi ; ZHANG Shu-ying ; ZUO Wen-long ; 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：光纤陀螺 ; 频带宽度 ; PZT ; 模拟正弦波 ; 数字正弦波
- 英文论文关键词：fiber optic gyro ; bandwidth ; PZT ; signal sine ; digital sine
- 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：5
- 文件大小：713k
- 原文格式：D
- 会议级别：全国
摘要
光纤陀螺作为新型全固态角速率感应器,具有高带宽的特点。目前用于带宽测试的角振动台存在输入频率较低的问题。通过建立光纤陀螺数字闭环模型,提出了在陀螺闭环回路中加入模拟或数字正弦波的方法,等效外部角速度输入,测量陀螺带宽。通过在光纤环圈中加入一个PZT元件,在PZT元件上施加模拟正弦信号,或在反馈阶梯波上附加数字正弦信号,得到陀螺的幅频响应曲线,从而得到陀螺带宽。按照这两种方法,对实验光纤陀螺进行带宽测试,运用串口输出数字量和串行DA输出模拟量方法实现高速测量,得到陀螺的响应输出,加入两种等效信号测得的陀螺带宽结果一致。
As a new all-solid-state angular rate sensor, FOG has a large bandwidth in theory. The turntable, which is usually used in FOG's band-width at present, has a matter that its input frequency is low for test. According to establishing the model of FOG's digital close-loop, a method uses analog or digital sine wave, which works as equivalent outside input phase signal, adding to close-loop of FOG is presented to test FOG's bandwidth. By introducing a PZT into the fiber coin and applying a analog sine wave to the PZT, or adding a digital sine wave to the FOG's feedback step-wave, we get amplitude-frequency characteristic curve and then get the FOG's bandwidth. According to the two methods, a laboratorial FOG is tested. We realize high-speed measure by serial port outputting digital value and serial DA outputting analog value, and get the response curve of the FOG, which shows the same result by inputting the two equivalent input phase signal.
As a new all-solid-state angular rate sensor, FOG has a large bandwidth in theory. The turntable, which is usually used in FOG's band-width at present, has a matter that its input frequency is low for test. According to establishing the model of FOG's digital close-loop, a method uses analog or digital sine wave, which works as equivalent outside input phase signal, adding to close-loop of FOG is presented to test FOG's bandwidth. By introducing a PZT into the fiber coin and applying a analog sine wave to the PZT, or adding a digital sine wave to the FOG's feedback step-wave, we get amplitude-frequency characteristic curve and then get the FOG's bandwidth. According to the two methods, a laboratorial FOG is tested. We realize high-speed measure by serial port outputting digital value and serial DA outputting analog value, and get the response curve of the FOG, which shows the same result by inputting the two equivalent input phase signal.
引文
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[5]徐明,张桂才,李祖国.采用正弦调制测量光纤陀螺带宽的方法研究[J].压电与声光,2009(2):175-177.
[6]宋凝芳,李洪全,李敏,等.基于等效输入的光纤陀螺带宽自主测试方法[J].中国惯性技术学报,2010,18(1):101-105.
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[2]陈馨.导航级低成本光纤陀螺的研制[D].中国舰船研究院,硕士论文,2012.
[3]王继奎.干涉式光纤陀螺数学模型的研究[D].长春理工大学硕士学位论文,2009.
[4]王妍,张春熹.数字闭环光纤陀螺动态特性研究[J].北京航空航天大学学报,2004,30(9):818-821.
[5]徐明,张桂才,李祖国.采用正弦调制测量光纤陀螺带宽的方法研究[J].压电与声光,2009(2):175-177.
[6]宋凝芳,李洪全,李敏,等.基于等效输入的光纤陀螺带宽自主测试方法[J].中国惯性技术学报,2010,18(1):101-105.
[7]GJB2426-2004.光纤陀螺仪测试方法[S].