| 姿态参数的模拟解算电路设计与分析 |
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| 引用本文： | 王晓翠程为彬李,彬等.姿态参数的模拟解算电路设计与分析[J].传感器与微系统,2014(4):72-75,79. |
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| 作者姓名： | 王晓翠程为彬李 彬等 |
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| 作者单位： | 西安石油大学电子工程学院,陕西西安710065 |
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| 基金项目： | 国家自然科学基金资助项目（61174191）;陕西省工业攻关计划资助项目（2011K06-27） |
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| 摘 要： | 根据姿态传感器输出与姿态参数之间的三角函数关系,设计了一种基于函数发生器的反三角函数电路,以减小模拟反三角函数解算误差,实现对姿态参数的直接解算。利用离散和连续2种方法对所设计电路进行测试,离散测试分析中采用多点拟合对实验数据进行处理,平均角度误差减小为0.11°,最大角度误差减小为2.87°;连续测试中对输入输出信号时域和频域特征进行了分析,测得输出波形的总谐波失真为8.14%。结果表明:解算方案可行,可用于姿态参数的模拟解算。
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| 关 键 词： | 模拟解算 反正弦函数 多点拟合 频谱分析 |
Design and analysis of analog computation circuit of attitude parameter |
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| WANG Xiao-cui,CHENG Wei-bin,LI Bin,PAN Meng.Design and analysis of analog computation circuit of attitude parameter[J].Transducer and Microsystem Technology,2014(4):72-75,79. |
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| Authors: | WANG Xiao-cui CHENG Wei-bin LI Bin PAN Meng |
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| Affiliation: | 1.School of Electronic Engineering, Xi＇an Shiyou University, Xi＇an 710065, China;) |
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| Abstract: | According to trigonometric function relations between output of attitude sensors and attitude parameters,an inverse trigonometric function circuit based on function generator is designed,to reduce computation error of analog inverse trigonometric and realize directly computation of attitude parameters.Tests on the designed circuit with discrete and continuous methods are realized,in discrete test analysis,multi-point fitting is adopted to process experimental data,and the average angle error is reduced to 0.11° and the maximum angle error is reduced to 2.87° ; in continuous measurement,features of the input and output signals in time-domain and frequency-domain are analyzed,total harmonics distortion of output waveform is 8.14 ％.Experimental results show that the computation scheme is feasible,thus it can be used for analog computation of attitude parameters. |
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| Keywords: | analog computation arcsine function multi-point fitting spectrum analysis |
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