| 引用本文: | 吴美平,罗兵,郭理彬.石英角速率传感器数字相关检测技术研究.[J].国防科技大学学报,2007,29(4):116-120.[点击复制] |
| WU Meiping,LUO Bing,GUO Libin.Study on Digital Correlation Detection Technology of Quartz Rate Sensor[J].Journal of National University of Defense Technology,2007,29(4):116-120[点击复制] |
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| 石英角速率传感器数字相关检测技术研究 |
| 吴美平, 罗兵, 郭理彬 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 为提高石英角速率传感器(QRS)的测量性能，提出了基于数字相关检测技术的QRS信号解调方案。该方案需将一组互相正交的参考信号作为两个相关器的输入，能够同时分离出QRS敏感信号相对于参考信号的同相分量和正交分量。通过角速度提取算法可由以上分量进一步得到输入角速度。分析了实现参考通道功能的两种方法：锁相环(PLL)和Hilbert变换，通过对这两种方法的对比得知，PLL更适合作为QRS相关检测的参考通道。 |
| 关键词: 石英角速率传感器 相关检测 锁相环 Hilbert变换 |
| DOI： |
| 投稿日期：2006-12-30 |
| 基金项目: |
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| Study on Digital Correlation Detection Technology of Quartz Rate Sensor |
| WU Meiping, LUO Bing, GUO Libin |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A method for quartz rate sensor (QRS) using digital correlation detection is proposed to improve the performance of QRS. It requires a pair of orthogonal signals as input of two correlates, which can extract the in-phase and quadrature-phase component from QRS' readout signal. Then the input angular rate will be obtained from these two components. A reference channel is used to generate a pair of orthogonal signals. Phase-locked loop (PLL) and Hilbert transform can be used as the reference channel. By comparison it is concluded that the PLL has better performance than Hilbert transform. |
| Keywords: quartz rate sensor correlation detection phase-locked loop hilbert transform |
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