Abstract: The operation condition and scanning velocity of a piezoelectric step motor have been studied. It is found that the up and down slopes of the pulsed voltage applied to the piezoelectric step motor not only limit the maximum velocity of the stepper, but also determine the operation condition. In our system,the mechanical and electronie components of the stepper are compact and simple,and the electromagnetic noise has been reduced by taking a shield shape.

Key words: piezoelectric oeramic, piezoelectric step moter