Patent ID: 8773800
Filing Date: 2014-07-08
Classification: G11B

Abstract:
1. A data storage media drive providing adaptive disturbance compensation, comprising: a read/write head including at least one servo element; a servo signal processing circuit coupled to the servo element to output a position error signal; one or more rollers in contact with a data storage media; an actuator coupled to, and configured to control positions of, the read/write head; and a processor in communication with the actuator and the servo signal processing circuit and configured to provide a least one filtered position error signal to the actuator to compensate for a position displacement between the read/write head and a track of the data storage media, wherein the filtered position error signal comprises a sum of respective outputs of a plurality of compensation filters, each of the compensation filters corresponding to a specific source of disturbance contributing to the position displacement, the one or more rollers being a source of disturbance contributing to the position displacement, each of the compensation filters having a sampling rate relating to the respective specific source of disturbance, and the compensation filter for a roller induced disturbance having a sampling rate based on a position error signal (PES).