PIEZOELECTRIC DEVICE OF LINEAR MOVEMENTS AND METHOD OF REALIZATION OF MOVEMENTS Russian patent published in 1995 - IPC

FIELD: precision positioning equipment. SUBSTANCE: piezoelectric device has two groups of rod piezoconverters anchored in cantilever in case in parallel to axis of output shaft. Each group includes three piezoconverters uniformly located over circumference and provided with wear-resistant support elements. Output shaft is made interference fit. For realization of movement of output shaft voltage is fed in sequence to piezoconverters of first and then second group with translation of ends of piezoconverters relative to output shaft in one direction. After this all converters of both groups are deenergized. As a result of it output shaft moves by one step. EFFECT: increased positioning precision. 2 cl, 2 dwg