VCM應用LQG方法於光碟機的制振研究

Abstract

光碟機主要的震動是由於旋轉時碟片的不平衡量造成。目前的光碟機通常使用被動式集振器當成減震裝置。一般來說，光碟機在不同的讀取情況下碟機會在多個轉速下工作，不過目前的被動裝置僅僅能某個轉速頻率下發揮效果。這個研究使用了線性高斯二次方法控制VCM形成一個主動式的集振器來取代傳統的集振器。以這個主動式的集振器來減少碟機在各種轉速下的震動。

Unbalanced disks in rotation will lead to the main vibration of an optical disk drive. Passive vibration absorbers are usually used in current optical disk drives to suppress vibration. Generally, optical disk drives have to make a disk spin at multiple speeds by different read/write conditions. However, the passive vibration absorber only suppresses vibration at a specific rotating speed and may excite vibration at other speeds. This study uses a linear quadratic Gaussian (LQG) to control VCM for active vibration absorbers. Using active vibration absorbers to reduce disk drive vibration at multiple rotating speed.