| 摘要 |
PURPOSE:To smoothen a variation of a target speed and to lessen an electric current pulsation by providing an outputting means for the previous target speed, an outputting means for an adding speed for compensating the previous target speed and an adding means, and adding the adding speed to the previous target speed based on a track passing pulse so as to be the target speed. CONSTITUTION:The titled generator is equipped with a 1st means for outputting the previous target speed in response to the number of remaining tracks from the track before one track preceding such as track that was just detected up to the target track, a 2nd means for outputting the adding speed for compensating the previous target speed and the adding means for adding the previous target speed to the adding speed. The 1st means comprises an MPU 3A and a D/A converter 4, while the 2nd means comprises an acceleration setter 10 and an integrator 11, whereas the adding means is equipped with a switch 12 and an adder 13. Then, the adding speed generated by the 2nd means is added by the adding means to the previous target speed generated by the 1st means to make the target speed. By this method, the pulsation of the drive current for an actuator can thus be minimized. |
