کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9546848 1369019 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study of wavelet analysis based error compensation for the angular measuring system of high-precision test turntables
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
A study of wavelet analysis based error compensation for the angular measuring system of high-precision test turntables
چکیده انگلیسی
An angular measuring system is the most important component of high-precision test turntables; its function and precision determine the turntable's function and precision. The angular measuring system's error was considered as a stationary signal in the past. An autocorrelation function and spectrum characteristics of the angular measuring system error are analyzed using the cyclostationary signal theory. The idea that the error in the angular measuring system is nonstationary is first put forward; theory is provided to reconstruct the angular measuring system's error signal using wavelet analysis. The error signal is reconstructed using one-dimensional Mallat's algorithm. The standard deviation between the reconstructed and the original signal is much less than the angular measuring system's accuracy. The reconstruction signal is used to compensate the system error instead of the original error signal; the angular measuring system accuracy is improved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: ISA Transactions - Volume 44, Issue 1, January 2005, Pages 15-21
نویسندگان
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