The authors proposed a new actuator called "Nano-Motion Actuator (NMA)" for track following on a spin-stand that evaluated magnetic heads and media for high density recording. At the present time, effect of azimuth angle which causes between a center line of a head slider and a tangential direction of the track is actualized as a track pitch of the head becomes narrow. However, when a discrete track media (DTM) will be put to practical use, a new specification that should be large working distance exceeding 60 μm with a resonance frequency of over 5 kHz should be required. In a previous report, the authors proposed a new actuator which was consisted of a laminar piezoelectric element and a displacement amplitude mechanism. A new concept that was moving directions of the piezoelectric element and the actuator were at right angles to each other was applied to the amplitude mechanism. In this report, the PID control performance for the new actuator is described in frequency response characteristic and transient response characteristic.
