Patent ID: 6385142
Filing Date: 2002-05-07
Classification: G05B,G11B,Y02P

Abstract:
A position controlling device for use in a library device which stores a plurality of storage media and includes an automatic transporting unit for transporting a storage medium, comprising:driving means for driving said automatic transporting unit; move amount detecting means for detecting an amount of a move of said automatic transporting unit; storing means for storing predetermined first distance data beforehand; and controlling means for correcting position data of said automatic transporting unit using a ratio of second distance data to the first distance data, said second distance data being obtained from said move amount detecting means and corresponding to the first distance data, and said controlling means controlling said driving means using the corrected position data, wherein: said storing means stores data of a design value of a stroke of said automatic transporting unit as the first distance data; and said move amount detecting means detects data of an actual value of the stroke of said automatic transporting unit as the second distance data.