SELF-MONITORING AND SELF-HEALING OF FREQUENCY SPECIFIC POSITION ERRORS IN A DATA STORAGE DEVICE

摘要

The present invention, the data storage device according to a narrowband excitation and mechanical actuator control signal generated by the controller relates to a disturbance frequency associated with the detection and / or apparatus and method for controlling an actuator of a data storage device to detect and / or correct for this, such as by a narrow-band mechanical spindle bearing defect by cutting off. Can use a narrow-band filter in order to block the disturbance frequency associated with a spindle bearing defect in the data storage device from the actuator control signal generated by the data storage device controller, a disturbance frequency is the zero crossover frequency associated with the data storage device controller, The nicely arranged. Further, the peak filter disposed in the control loop of the data storage device controller is configured to detect a spindle bearing defect in the data storage device by detecting an amplitude of the control signal in the stunning, in a control loop the disturbance frequency associated with the spindle bearing defect.