TMR online optimization using quasi-Newton method for HDD servo systems. - Qi Hao; Guoxiao Guo; Ruifeng Chen 002; Shixin Chen; Teck Seng Low (ACC, 2000)

An optimal multirate control design with robustness specification for sampled-data HDD servo systems. - Qi Hao; Guoxiao Guo; Ruifeng Chen 002; Shixin Chen; Teck Seng Low (CDC, 2000)

A gradient-based track-following controller optimization for hard disk drive. - Qi Hao; Ruifeng Chen 002; Guoxiao Guo; Shixin Chen; Teck Seng Low (IEEE Trans. Ind. Electron., 2003)