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Optical image stabilization system occupy an important place in infrared imaging products. Piezoelectric actuators have great advantages such as high-response and high-precision. A 2D stage using linear piezoelectric actuators is designed to achieve image stabilization. The piezoelectric linear actuator contains a shrinkage amplification mechanism and a stretching amplification mechanism, which can...
This study presents a new type of linear motor based on the micro-vibration of piezoelectric stacks. The working mechanism of the motor was analyzed. Then the clamping structure and overall structure of motor was designed. Further, the best size of the flexible structures was obtained by means of finite element analysis method on the clamping structure. The prototype was manufactured and tested. Then...
This paper reported an ultrasonic motor using the 1st longitudinal and the 2nd torsional (L-T) modes. The stator slots were useful to tune the resonance frequencies and increased L-T displacements largely. By cutting slots, which determined the number of oscillators, the whole stator was changed into independent vibrators. The more independent vibrators, the bigger power it outputs. The stator possessing...
Summary form only given. Based on the piezoelectric ceramics stack had a big amplitude of displacement during low frequency, a new type of piezoelectric linear motor based on non-resonant vibration was proposed. The working principle of the motor was presented, the structure was designed by finite element software, and a prototype was made. The mechanical property of the motor was preferable during...
A novel type of ultrasonic bearing is proposed in this paper. Finite element method is used to carry out the mode analysis and harmonic response of piezoelectric ceramic actuator used in the bearing. The working frequency of the piezoelectric ceramic actuator is determined by the mode experiment. The comparative trial is made on the working and the non-working condition of the piezoelectric ceramic...
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