Verification of the direct measurement principle of linear velocity using Sagnac effect

Ryo Nagakubo; Kodai Iwata; Hiroshi Sawano

doi:10.1117/12.2541627

16 October 2019 Verification of the direct measurement principle of linear velocity using Sagnac effect

Ryo Nagakubo, Kodai Iwata, Hiroshi Sawano

Proceedings Volume 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019); 1120508 (2019) https://doi.org/10.1117/12.2541627
Event: Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 2019, Phuket, Thailand

Abstract

With the development of technology, the demands for high-speed and high-precision processing for fabricating precision parts such as semiconductors and liquid crystals have been increasing. However, there is a problem that vibrations occur in ultra-precision machines. However, in order to improve machining accuracy, it is necessary to suppress the vibration of the machine tool. In a vibration control system, vibration is reduced by speed feedback. In the conventional method, speed control is performed by integrating acceleration. Therefore, there is a problem that the error is accumulated and the accuracy of measurement speed is reduced. Currently, linear velocity can’t be measured directly without reference point, while angular velocity can be measured directly without reference. The angular velocity can be measured directly using the Sagnac effect, which is the basis of the optical gyro. Then, in this research, in order to realize the linear velocity measurement method which does not cause an error theoretically, we verified about the direct measurement principle of linear velocity using Sagnac effect.

Citation Download Citation

Ryo Nagakubo, Kodai Iwata, and Hiroshi Sawano "Verification of the direct measurement principle of linear velocity using Sagnac effect", Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 1120508 (16 October 2019); https://doi.org/10.1117/12.2541627

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