有哪些信誉好的足球投注网站- 1、本文档共5页，可阅读全部内容。
- 2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
- 3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
查看更多
时序分析在排种轴转速检测数据处理中的应用.PDF
() 2014 8 40 4
Journal of Hunan Agricultural University (Natural Sciences), Aug. 2014, 40(4):435–439
DOI:10.13331/ki.jhau.2014.04.021
/qks
时序分析在排种轴转速检测数据处理中的应用
( 453003)
摘 要CCD
AR AR
(45 r/min )
19.920 683.83%±6.912 312 r/min
74.631 2%0.050 136t 16.805 280.000 t
关 键 词
中图分类号 TP391.76 文献标志码：A 文章编号：1007− 1032(2014)04−0435−05
The application of timing analysis in processing of test data
of rotational speed of seeding shaft
AN Ai-qinPANG Ming-huaNIE Yong-fangNING Xin
(Electrical and Mechanical College, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China)
Abstract: Visual inspection samples of seeding shaft of air blowing precision seeder were got by CCD camera, rotational
speed serials were obtained by image processing, whose characteristic was analyzed based on which rotational speed of
seeding shaft was investigated through timing analysis. Based on the speed serial data, the auto-covariance function,
autocorrelation function and partial autocorrelation function were calculated, and the AR model was selected for analysis of
speed serial. The fitted and residual serials were obtained using the actual serials and the AR model (under 45 r/min for
example). Through fitting analysis of the residuals and the model, the calculated maximum of residuals is 19.920 6, and
83.83% of the residuals were within ± 6.912 312 r/min, which is the allowed value range; the fit of the model was 74.631 2%
with standard deviation of 0.050 136. The model’s coefficients were 16.805 28 at the significance level of 0.000 by t-test.
Key words: air blowing
文档评论（0）