Abstract
A design of cylindrical type piezoelectric mobile actuator is proposed and analyzed in the paper. Traveling wave is generated on the top area of the actuator applying harmonic oscillations with different phases. Electrodes of piezoceramic elements are excited by harmonic voltage with phase difference of 2π / 3. Numerical modeling based on finite element method was performed to find resonant frequencies and modal shapes of the actuator and to calculate the trajectories of the upper points movements under excitation scheme. Path-Planning algorithm presented for cylindrical piezoelectric mobile actuator.DOI: http://dx.doi.org/10.5755/j01.mech.18.5.2698
Highlights
Piezoelectric actuators are widely used for high precision mechanical systems such as positioning devices, manipulating systems, control equipment and etc [1, 2]
Traveling wave piezoelectric actuators fall under two types – rotary and linear
Recent applications of the piezoelectric finite elements were directed towards techniques of post processing
Summary
Piezoelectric actuators are widely used for high precision mechanical systems such as positioning devices, manipulating systems, control equipment and etc [1, 2]. Piezoelectric actuators have advanced features such as high resolution, short response time, compact size, and good controllability [1, 2]. Many design principles of piezoelectric actuators are proposed and used [3]. A lot of design and operating principles are investigated to transform mechanical vibrations of piezoceramic elements into elliptical movement of the contact zone of actuator [2, 3, 6, 7]. Traveling wave piezoelectric actuators fall under two types – rotary and linear. In general many design principles of piezoelectric actuators are proposed. Piezoelectric actuator of upper traveling wave type is presented and analyzed in this paper.
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