驱动电路一致性对光纤陀螺用SLD光源特性的影响

发布时间：2018-03-21 11:04

本文选题：电路一致性　切入点：SLD光源　出处：《中国惯性技术学报》2017年04期 　论文类型：期刊论文

【摘要】：针对目前同批次驱动电路对同一光源控制效果存在差异的问题,开展器件一致性对光纤陀螺用SLD光源特性影响的研究,找到影响驱动电路一致性的关键部位,并提出解决方案,从而规范驱动电路制作过程。理论分析结果表明:造成温控电路差异的因素由大到小依次是惠斯通桥两臂电阻偏差、热敏电阻与同臂电阻偏差、正/负电源精度、运算放大器输入失调电压,以及积分电路的运放精度;造成恒流源电路差异的因素主要是指示器误差、驱动电流漂移误差和恒流源器件选配误差;通过采取元器件配对、调试、更换高精度器件等措施,可消除或大幅降低上述电路差异。试验结果证明,按照理论规范生产的驱动电路板一致性显著提高,可达到同类进口驱动电路的水平。
[Abstract]:Aiming at the difference of control effect of the same batch drive circuit to the same light source at present, the influence of device consistency on the characteristics of SLD light source for fiber optic gyroscope (fog) is studied, and the key position affecting the consistency of driving circuit is found, and the solution is put forward. The theoretical analysis results show that the factors that cause the difference of temperature control circuit from big to small are the two arm resistor deviation of Wheystone Bridge, the deviation of thermistor and the same arm resistance, the accuracy of positive / negative power supply. The input offset voltage of the operational amplifier and the operational amplifier precision of the integral circuit, the main factors causing the difference of the constant current source circuit are the indicator error, the driving current drift error and the constant current source device selection error. The experimental results show that the consistency of the driving circuit board produced according to the theoretical specifications is improved significantly and the same level of the imported drive circuit can be achieved.
【作者单位】：军械工程学院电子与光学工程系;
【基金】：国家高技术研究发展计划(863计划)(2012AAG3025)
【分类号】：TN312.8;TN96

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