Minimum trajectory control of focusing and tracking of optical disk systems by two-dimensional feedforward compensator. - Tatsuya Nakazaki; Naohide Sakimura; Takahiro Ohashi; Kiyoshi Ohishi; Toshimasa Miyazaki (IECON, 2013)

Minimum tracking & focusing trajectory control based on two-dimensional equivalent PTC for optical disk. - Takahiro Ohashi; Naohide Sakimura; Kiyoshi Ohishi; Toshimasa Miyazaki (AMC, 2014)

Robust double feedforward tracking control system using error based disturbance observer for optical disk systems. - Naohide Sakimura; Takahiro Ohashi; Kiyoshi Ohishi; Toshimasa Miyazaki (AMC, 2014)