| 时栅转台自动标定系统的研究 |
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| 引用本文： | 张天恒,王培懿,武亮,索龙博. 时栅转台自动标定系统的研究[J]. 计量学报, 2016, 37(1): 6-9. DOI: 10.3969/j.issn.1000-1158.2016.01.02 |
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| 作者姓名： | 张天恒 王培懿 武亮 索龙博 |
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| 作者单位： | 重庆理工大学机械检测技术及装备教育部工程研究中心 |
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| 基金项目： | 国家自然科学基金（51405049,51435002,51475063,51406020） |
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| 摘 要： | 提出一种自动检测时栅转台误差、辨识误差模型系数和误差补偿的方法。该系统利用自制的数控控制箱结合嵌入式技术,以高精度的圆光栅作为基准量仪, 以双微控制器与上位机为基础,形成双闭环控制结构,实现系统的高精度定位。在对极点8个待定参数和对极内20个待定参数分别进行傅里叶变换的参数辨识,得到辨识误差模型的系数,实现了实时在线误差补偿。实验结果表明,时栅转台的精度达到2.4″,提高了时栅转台标定精度与标定效率。
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| 关 键 词： | 计量学 时栅转台 自动标定 参数辨识 双闭环 |
| 收稿时间： | 2014-11-13 |
Research of the Time Grating Turntable Automatic Calibration System |
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| ZHANG Tian-heng,WANG Pei-yi,WU Liang,SUO Long-bo. Research of the Time Grating Turntable Automatic Calibration System[J]. Acta Metrologica Sinica, 2016, 37(1): 6-9. DOI: 10.3969/j.issn.1000-1158.2016.01.02 |
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| Authors: | ZHANG Tian-heng WANG Pei-yi WU Liang SUO Long-bo |
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| Affiliation: | Engineering Research Center of Mechanical Testing Technology and Equipment, Ministry of Education, Chongqing University of Technology |
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| Abstract: | An automatic measurement method is proposed to measur error time grating turntable, identify parameters of model and compensating error. The system adopts home-made numerical control box combining with embedded technology. The high precision grating is used as reference meter, and the double closed-loop control structure is formed with double micro-controller and PC to achieve high-precision positioning system. The undetermined parameters, 8 on poles and 20 within poles, are identified by the Fourier transform, to obtain coefficients of identifying error model and to realize the real-time online error compensation. Experimental results show that the double closed-loop control system and parameter identification of Fourier transform, can improve the accuracy and the efficiency of calibration, and the accuracy of the time grating turntable is up to 2.4 ″. |
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| Keywords: | metrology time grating turntable automatic calibration parameter identification double closed loop |
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