Rejection of repeatable and non-repeatable disturbances for disk drive actuators
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摘要: Presents an application of two-parameter robust repetitive control (TPRRC) in disk drive servo control, where the repeatable runout (RRO) and non-repeatable (NRRO) are rejected simultaneously. The disturbances by internal model structure TPRRC, while attenuated performance specification. design procedure TPRRC is given. A simple weighting function W/sub p/(j/spl omega/~) proposed relationship between coefficients specification over disturbance discussed too. simulation results using measured position error signals a as output presented to show effectiveness rejection demonstrate that it cost effective way improve track density drives.
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