Abstract: An apparatus, system, and method are disclosed for the cancellation of repeatable runout signals. A signal processing module receives a position error signal and outputs a position compensated signal. A feed forward module receives the position error signal and outputs one or more cancellation signals to cancel one or more repeatable runout components from the position error signal when combined with the position compensated signal. A combining module combines the position compensated signal and the cancellation signals into a position command signal. A feedback module receives the position command signal and outputs the position error signal.

Abstract: An apparatus, system, and method are disclosed for the cancellation of repeatable runout signals. A signal processing module receives a position error signal and outputs a position compensated signal. A feed forward module receives the position error signal and outputs one or more cancellation signals to cancel one or more repeatable runout components from the position error signal when combined with the position compensated signal. A combining module combines the position compensated signal and the cancellation signals into a position command signal. A feedback module receives the position command signal and outputs the position error signal.

Abstract: An apparatus, system, and method are disclosed for the cancellation of repeatable runout signals. A signal processing module receives a position error signal and outputs a position compensated signal. A feed forward module receives the position error signal and outputs one or more cancellation signals to cancel one or more repeatable runout components from the position error signal when combined with the position compensated signal. A combining module combines the position compensated signal and the cancellation signals into a position command signal. A feedback module receives the position command signal and outputs the position error signal.

Abstract: An apparatus, system, and method are disclosed to cancel repeatable runout signals. A linear causal system having an impulse response receives a cancellation signal and outputs a position error signal. An inverse matrix module multiplies the position error signal by an inverse matrix and outputs an intermediate cancellation signal. One or more impulse integration modules each integrate at least one sample of the intermediate cancellation signal in one or more predefined periods and output the cancellation signal.

Abstract: An apparatus, system, and method are disclosed to cancel repeatable runout signals. A linear causal system having an impulse response receives a cancellation signal and outputs a position error signal. An inverse matrix module multiplies the position error signal by an inverse matrix and outputs an intermediate cancellation signal. One or more impulse integration modules each integrate at least one sample of the intermediate cancellation signal in one or more predefined periods and output the cancellation signal.

Abstract: An apparatus, system, and method are disclosed for the cancellation of repeatable runout signals. A signal processing module receives a position error signal and outputs a position compensated signal. A feed forward module receives the position error signal and outputs one or more cancellation signals to cancel one or more repeatable runout components from the position error signal when combined with the position compensated signal. A combining module combines the position compensated signal and the cancellation signals into a position command signal. A feedback module receives the position command signal and outputs the position error signal.

Abstract: A system and method of extending the position error signal for a disk drive storage system using two digital-to-analog converters in a summing junction, including a typical A-B signal and a track error signal scaled to match a gain of the A-B signal. A track error is calculated. The track error is output to a second digital-to-analog converter. The A-B signal is inverted according to the least significant bit of the grey code of a disk track being read. The inverted A-B signal is output to a first digital-to-analog converter. The inverted A-B signal and the track error are combined using a summer to generate a combined signal. The combined signal is used to generate an extended position error signal.