| 数字式精密温控对FOG IMU性能的影响 |
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| 引用本文： | 任卓恒,宋凝芳,崔佳涛.数字式精密温控对FOG IMU性能的影响[J].北京航空航天大学学报,2007,33(6):694-697. |
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| 作者姓名： | 任卓恒 宋凝芳 崔佳涛 |
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| 作者单位： | 北京航空航天大学,仪器科学与光电工程学院,北京,100083;北京航空航天大学,仪器科学与光电工程学院,北京,100083;北京航空航天大学,仪器科学与光电工程学院,北京,100083 |
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| 摘 要： | 以战术级光纤陀螺(FOG, Fiber-Optic Gyro)惯性测量组合(IMU, Inertial Measurement Unit)为研究对象,分析了环境温度与其测量精度的关系.为抑制外界温度对IMU的干扰,提出了一种实用的IMU温度控制方法,即根据IMU的热分析与仿真,优化温度控制方案和控制算法,并依此方法为IMU设计了基于模糊PID(Proportion Integration Differentiation)算法的数字式温控系统,研究了有温控和无温控对陀螺和加速度计测量精度的影响.试验表明,对IMU进行精密温控,改善了惯性器件的热环境,有助于提高IMU的综合性能.
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| 关 键 词： | 惯性 导航系统 光纤 陀螺仪 热仿真 温度控制 模糊PID |
| 文章编号： | 1001-5965（2007）06-0694-04 |
| 收稿时间： | 2006-09-01 |
| 修稿时间： | 2006-09-01 |
Effect of digital precision temperature control on FOG IMU performance |
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| Ren Zhuoheng,Song Ningfang,Cui Jiatao.Effect of digital precision temperature control on FOG IMU performance[J].Journal of Beijing University of Aeronautics and Astronautics,2007,33(6):694-697. |
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| Authors: | Ren Zhuoheng Song Ningfang Cui Jiatao |
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| Institution: | School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Referring to the object of tactical FOG (fiber-optic gyro) IMU (inertial measurement unit), the relationship between the environmental temperature and its measurement accuracy was analyzed. An applied temperature control method was put forward to bate the interference of external temperature on IMU. It optimizes temperature control scheme and control algorithm, which are based on thermal analysis and simulation. And according to it, a digital temperature control system based on fuzzy PID(proportion integration differentiation) algorithm was designed for IMU. Influence to the precision of gyros and accelerometers when without temperature control and with temperature control was respectively studied. The results of experimentation indicate precision temperature control to ameliorate inertial parts′ thermal condition could favor to improve the performance of IMU. |
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| Keywords: | inertial navigation systems fiber optic gyro thermal simulation temperature control fuzzy PID |
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