SERVO CONTROLLER

PROBLEM TO BE SOLVED: To stabilize the feeding operation of a feed by changing over tracking servo characteristic or a feed servo characteristic in accordance with an eccentric quantity. SOLUTION: This controller is provided with an eccentric quantity calculating part 12 calculating the eccentric qu...

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Bibliographic Details
Main Author SAITO YOSHIHARU
Format Patent
LanguageEnglish
Published 06.08.1999
Edition6
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To stabilize the feeding operation of a feed by changing over tracking servo characteristic or a feed servo characteristic in accordance with an eccentric quantity. SOLUTION: This controller is provided with an eccentric quantity calculating part 12 calculating the eccentric quantity of a disk to be loaded 1 and the eccentric quantity of the device itself, a servo characteristic storage part 14 in which plural servo characteristics in accordance with the eccentric quantities are previously stored and a characteristic selection part 13 which selects the corresponding servo characteristics from the servo characteristic storage part 14 to output them based on the eccentric quantity calculated by the calculating part 12 and a tracking servo circuit 7 and a feed servo circuit 9 are made so as to perform servo controlls based on the servo characteristics selected by the characteristic selection part 13.
Bibliography:Application Number: JP19980014318