Additional Drive Circuitry for Piezoelectric Screw Motors

Savedra, Raymond ; Gursel, Yekta ; Smythe, Robert ; Palmer, Dean ; Reder, Leonard

PID  :  NTRS Document ID: 20110020295
RP-ID  :  NPO-30359

学科分类：电子与电气工程

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Modules of additional drive circuitry have been developed to enhance the functionality of a family of commercially available positioning motors (Picomotor . or equivalent) that provide linear motion controllable, in principle, to within increments .30 nm. A motor of this type includes a piezoelectric actuator that turns a screw. Unlike traditional piezoelectrically actuated mechanisms, a motor of this type does not rely on the piezoelectric transducer to hold position: the screw does not turn except when the drive signal is applied to the actuator.