Analyzing dynamic characteristics of NC table with SVD

Linhong Wang; Bo Wu

doi:10.1117/12.819747

31 December 2008 Analyzing dynamic characteristics of NC table with SVD

Linhong Wang, Bo Wu

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 713057 (2008) https://doi.org/10.1117/12.819747
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

This article employs SVD (singular value decomposition) method to study dynamic characteristics of NC (numerical control) table. Acceleration signals of the NC table at three directions were tested; the singular spectrum of the signals was acquired with SVD; principal components of the signals were found out; the dynamic characteristics of the signals and its contributing factors were studied through extracting dynamic characteristics of principal components; and quantitative analysis was made on signals and principal components through calculating signal energy. The results indicated that signal characteristics of the previous two principal components are apparent, based on which dynamic characteristics of chaotic signal can be extracted; signal at perpendicular direction of table is greatly correlated with that at the horizontal moving direction, indicating that they are excited from the same vibration source. But signals perpendicular to each other in terms of moving direction at the horizontal level is rarely correlated; total signal energy is maximum at moving direction, minimum at horizontal non-moving direction and in the middle at perpendicular non-moving direction; bending vibration of lead screw at perpendicular direction is far more violent than that at horizontal direction.

Citation Download Citation

Linhong Wang and Bo Wu "Analyzing dynamic characteristics of NC table with SVD", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 713057 (31 December 2008); https://doi.org/10.1117/12.819747

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available