Study of contact velocity and tribo charge intensity

This paper reports authors experimental investigation on head-disk contact velocity and tribo charge intensity. Measurements of trobo currents divide into three parts, deceleration, constant velocity and acceleration at various initial velocities (v_i). It is observed that tribo current appears at different linear velocity for different disk initial velocity v_i. A ripple of tribo current at large initial velocity during disk constant speed is observed while the slider is dragging on the disk surface. A calculation of tribo charge current at different initial velocity v_i is similar with the observations.