Patent ID: 6741529
Filing Date: 2004-05-25
Classification: G11B,H02K

Abstract:
A method for moving a carriage assembly from an initial position to a target position relative to a storage medium having a center and a circumference, and rotating relative to the carriage assembly at a circumferential velocity about the center, said method comprising the steps of:determining a first radial distance between the initial position of the carriage assembly and the center of the storage medium; determining a second radial distance between the target position of the carriage assembly and the center of the storage medium; determining a circumferential distance between the initial position of the carriage assembly and the target position of the carriage assembly; determining an initial circumferential velocity of the storage medium about the center of the storage medium; and calculating a velocity trajectory relative to said first radial distance, said second radial distance, said circumferential distance, and said initial circumferential velocity so that when the carriage assembly is moved from the initial position to the target position with said velocity trajectory, the carriage assembly will arrive radially and circumferentially at the target position at substantially the same time.