Method and apparatus for estimating micro-actuator stroke sensitivity in a hard disk drive

摘要

A micro hard disk drive is a method and apparatus for estimating a stroke actuator sensitivity is disclosed. Wherein to produce; (PES Position Error Signal) to induce noise in the side position of the reading head position error signal, a micro according to the present invention a method for estimating the stroke sensitivity of the actuator is close to the writing to the track by the voice coil motor In order to control the actuators, the micro-micro-step of using an actuator stimulus signal; Extracting at the side where the noise from the position error signal; And the side where the noise and the micro - including the read head-on the basis of the actuator stimulation signal comprises the step of estimating the stroke speed, wherein the micro-rotating disk surface of the writing of the close to the actuator, including the track It is connected to the slider.