The Measurement of Rotating Object by Dual-Frequency Laser Interferometer

• Main Authors: Kung-Hsuan Ho, 何恭瑄
• Other Authors: 林世聰
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/3qs7pg

碩士 === 國立臺北科技大學 === 光電工程系所 === 94 === The digital versatile disks (DVD) have the advantages of high speed, high data density, and easy storage. They are thus received more and more interesting in research, development, and menufacture recently. The key components of a DVD system are the disk and the spindle motor adopted for rotating the disk, and the performance of a DVD system is determined by the dynamic behavior of these two components. Because of this, this thesis develops a laser interferometic system for measuring the axial runout and tilt of a rotating disk and the axial runout, tilt, and radial runout of the spindle of a motor. The principle and the advantages of the interferometic system are described. Its applications in detecting a rotating disk and spindle motor are presented. The results agree the validity, advantages, and applicability of the proposed interferometer.