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This paper compares performance of a double feedforward control system that considers for time delay. Recently, digital content size continues to increase. In order to cope, manufacturers of digital storage media try to increase capacity by narrowing the track pitch of these digital storage media. This digital controller designs and implements in a Field-Programmable Gate Array (FPGA). However, the...
Recently, the data size of digital content has increased. To address the resultant storage issues, manufacturers have tried to increase storage capacity by narrowing the track pitch of digital storage media.[1] Considering all these factors, a high-precision tracking control system is required for optical discs. In this study, this paper develop and implement a feedforward control system using an...
Recently, the data size of digital content has increased. In order to cope, manufacturers have tried to increase capacity by narrowing the track pitch of digital storage media. In addition, recent advancements in technology have resulted in a new optical disc that has a rotation speed of over 15,000 rpm. Considering all these factors, a high-precision pick-up control system is needed for optical discs...
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