| 光电稳定跟踪平台中微机电陀螺滤波方法研究 |
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| 引用本文： | 张文博,李凯,朱尤攀,范大鹏.光电稳定跟踪平台中微机电陀螺滤波方法研究[J].红外技术,2006,28(5):249-252. |
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| 作者姓名： | 张文博 李凯 朱尤攀 范大鹏 |
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| 作者单位： | 1. 国防科技大学机电工程与自动化学院,湖南,长沙,410073
2. 昆明物理研究所,云南,昆明,650223 |
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| 摘 要： | 根据微机电陀螺的实测数据,分析了其噪声特性,建立了微机电陀螺零漂的AR模型.研究了基于Kalman滤波的陀螺去噪算法,给出了去噪结果,分析了Kalman滤波不能够在微机电陀螺信号去噪中获得较好效果的原因.在此基础上,将基于阈值决策的小波去噪方法应用于微机电陀螺的信号处理中,给出了滤波结果.实测结果表明由于后者不依赖于噪声的精确模型,根据噪声在不同频段的统计特性采用阈值决策滤波,具有更好的抑噪效果.最后给出了两种滤波算法的比较结果.
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| 关 键 词： | 石英音叉陀螺 AR模型 卡尔曼滤波 小波变换 阈值决策 |
| 文章编号： | 1001-8891（2006）05-0249-04 |
| 收稿时间： | 2006-02-14 |
| 修稿时间： | 2006-02-14 |
Research on the Denoising Methods of MEMS Gyro Used in Servo System with Optic Sensors |
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| ZHANG Wen-bo,LI Kai,ZHU You-pan,FAN Da-peng.Research on the Denoising Methods of MEMS Gyro Used in Servo System with Optic Sensors[J].Infrared Technology,2006,28(5):249-252. |
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| Authors: | ZHANG Wen-bo LI Kai ZHU You-pan FAN Da-peng |
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| Affiliation: | 1 .College of Mechatronics Engineering and Automation, National University of Defense Technology, Hunan Changsha 410073, China; 2. Kunming Institute of Physics, Kunming Yunnan 650223, China |
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| Abstract: | The noise feature of Quartz Rate Sensor was analyzed. Based on the AR model , the statistic parameters were reckoned. Then, the Kalman filter method was used to denoise the signal of QRS. The simulation results show that the Kalman filter method could not achieved good performance on the de-noise of QRS, the reasons of which was analyzed. Followed, the threshold filter method based on the wavelet was researched. The simulation results show its perfect performance on the de-noising for the signal of QRS. Finally, the comparisons between Kalman filter and Wavelet transform de-noise methods were given. |
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| Keywords: | QRS ARmodel Kalmanfilter wavelet transform threshold |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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