| 摘要 |
At the time of the loading of head, the CPU flows a plurality of different currents to VCM, and by reading the back electromotive force monitor value of the back electromotive force monitor circuit each time, the calibration value of the circuit is obtained, and by using this calibration value, head-loading control is executed. The calibration value obtained previously is compensated on the basis of temperature changes, temperature compensation coefficient that shows the relation between the variation of the calibration value of the back electromotive force monitor circuit, and the difference between the above-mentioned two measured temperatures.
|
