| 摘要: |
| 由于使用环境的需求，需要光纤惯组具有较宽的工作温度范围，一般在－40℃～60℃温度范围内有稳定且准确的输出。而实际情况下温度变化会使惯性器件输出产生温度漂移，制约惯组的输出精度。以工程实例为依托，以光纤惯组中低精度石英挠性加速度计作为研究对象，首先分析了石英加速度计的温度特性，然后设计了一种基于粒子群算法的石英加速度计温度补偿方法，并以温补后器件的零偏特性为依据，利用试验平台对温补效果进行了试验验证。试验结果表明，该温补方法能够有效补偿石英加速度计的温度漂移，补偿后的零偏稳定性较补偿前有数量级上的提升。 |
| 关键词: 石英挠性加速度计 温度补偿 粒子群算法 PSO工具箱 |
| DOI： |
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| 基金项目: |
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| Research on Temperature Compensation Method of Quartz Flexible Accelerometer Based on Particle Swarm Optimization |
| YU Dong-kang,YANG Gong-liu,WU Yi-rong,XIE Zu-hui,TU Yong-qiang |
| (School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China;Fujian Xinghai Communications Technology Co., Ltd., Fuzhou 350015, China) |
| Abstract: |
| To meet the requirements of it's operating environment, fiber optic inertial navigation system should operate over a wide temperature rang and should generally provide a stable and accurate output with temperature ranging from －40 to 60 degrees Celsius. In practice, temperature change brings drift to the output of inertial devices and restricts the output precision of the IMU. Based on engineering examples, we focus on the research of the low precision quartz flexible accelerometers of fiber strapdown IMU. Firstly, the temperature characteristic of quartz flexible accelerometers is analyzed. Then, a temperature compensation model is proposed based on particle swarm optimization (PSO) for quartz accelerometer and the compensation effectiveness is verified based on the bias characteristics of the device after temperature compensation. The results shows that the temperature compensation method can effectively compensate the temperature drift of quartz flexible accelerometer, and the bias stability has been improved by about one order of magnitude. |
| Key words: Quartz flexible accelerometer Temperature compensation Particle swarm optimization PSOt |
