Measurement of dynamic properties of optical disk cluster drive using virtual instruments

Optical Disk Cluster (ODC) drive is the key component of ultra-large capacity optical storage system. The principle of ODC drive is introduced. The measurement and analysis system of dynamic properties of ODC is developed using graphical programming language, LabVIEW, the best software platform of virtual Instruments. The vibration characteristic of ODC is studied. The experiments show that the main reasons of ODC vibration are shaft eccentricity, disalignment of shaft, and inclination of optical disk. As the result, the methods of reducing vibration of optical disk are presented, which can be used to optimizing design of ODC.