This Paper presents a positioning control method of the LBLDCM(Linear Brushless DC Motor) under friction. The friction may cause
steady state position error. So it is necessary to consider friction effect for precision positioning control. The proposed control method
uses disturbance observer algorithm with PTOS(Proximate Time Optimal Servomechanism) and friction compensation. The simulation
results of the proposed control method based on the disturbance observer are presented to show its effectiveness.