Abstract

In designing the tracking system of an optical disc drive, it is first necessary to eliminate the undesired influence of any visible mechanical vibrations. In this paper a geometrical method to analyze the frequency response of an elastically supported planar rigid body has been presented. Using the theory of screw, a geometrical expression of a compliant transfer function which describes the effects of the locations of an applied force and observation on the response has been derived. Applying the substructure synthesis method, a technique to stabilize the tracking mechanical system has been presented with a numerical example.

Keywords

• Screw Theory;
• Vibration Center;
• Transfer Function;
• Optical Disc;
• Objective Lens;
• Tracking

• 나선 이론;
• 진동중심;
• 전달함수;
• 광디스크;
• 대물렌즈;
• 트랙킹;