| 提高NGIMU性能的加速度计动态补偿器的研究 |
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| 引用本文： | 丁明理,王祁. 提高NGIMU性能的加速度计动态补偿器的研究[J]. 传感技术学报, 2005, 18(2): 292-295 |
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| 作者姓名： | 丁明理 王祁 |
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| 作者单位： | 哈尔滨工业大学自动化测试与控制系,黑龙江,哈尔滨,150001;哈尔滨工业大学自动化测试与控制系,黑龙江,哈尔滨,150001 |
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| 摘 要： | 无陀螺惯性测量技术是利用加速度计代替传统的陀螺,构成无陀螺惯性测量组合(NGIMU)实现制导的.首先,基于NGIMU九加速度计配置方案,根据加速度计的动态特性,推导了模型的动态导航方程,然后通过对加速度计进行动态补偿达到提高系统导航精度的目的,最后进行了系统三个方向角度运算的仿真验证.仿真结果表明,当加速度计输入信号的动态特性越强,NGIMU的导航误差越大,在动态补偿后系统的导航精度得到了有效提高.
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| 关 键 词： | 惯性导航 NGIMU 动态补偿 |
| 文章编号： | 1005-9490(2005)02-0292-04 |
| 修稿时间： | 2004-11-12 |
The Dynamic Compensation of Accelerometer Working on NGIMU |
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| D I N G Mi ngl i,WA N G Qi. The Dynamic Compensation of Accelerometer Working on NGIMU[J]. Journal of Transduction Technology, 2005, 18(2): 292-295 |
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| Authors: | D I N G Mi ngl i WA N G Qi |
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| Affiliation: | Dept. of A utomatic Test and Cont rol , Harbin I nstitute of Technology , Harbin 150001 , China |
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| Abstract: | Non-gyro micro inertial measurement unit (NGIMU) uses only accelerometers replacing gyroscopes to compute the motion of a moving body. Basing on a nine-accelerometer configuration of NGIMU, a dynamic navigation model is set up according to the dynamic characteristic of the accelerometer. The dynamic compensation to the accelerometer is done to improve the navigation precision of the NGIMU. Asimulation case for estimating the errors of the angles in three axes is investigated. The simulation results show that the stronger the dynamic characteristic of the accelerometer input signal, the larger the navigation error of the NGIMU. After the dynamic compensation, the navigation precision is improved effectively. |
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| Keywords: | NGIMU |
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