Pages 326-332
A new method to measure the disturbance of the optical disc, the closed output disturbance estimator (CLOE), is proposed and its validity is evaluated. In this method, the optical pick-up model and the nominal sensor gain are acquired by experimental method and loop gain adjustment (LGA). Proposed algorithm is constructed on the MATLAB SIMULINK and downloaded to the DSP board. Test DVD disc is used to qualify and quantify the disturbance of ODD under various conditions. The disturbance characteristic of ODD is analyzed and the servo loop based on this result is designed.
