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This paper presents a new-type linear ultrasonic motor which takes advantage of the combination of two orthogonal bending vibration modes. The proposed ultrasonic motor consists of eight pieces of PZT ceramic plates and a metal beam that includes two cone-shaped horns and a cylindrical driving foot. The finite element analyses were finished to verify the working principle of the proposed motor. The...
This paper proposed a new crossbeam ultrasonic motor, which was made of a cross-shaped metal frame and eight pieces of lead zirconate titanate ceramic plates with a size of $10~\text {mm}\times 3~\text {mm}\times 1$ mm. Two cross-cone-shaped horns were machined at two ends of the crossbeam, and the tips of the horns served as the driving feet. Ellipse trajectories of the two driving feet were generated...
A crossbeam linear ultrasonic motor with length of 38 mm and diameter of 11 mm is proposed in this paper. Eight pieces of PZT ceramic plates with size of 10mm×3mm×1mm are glued to metal base to form stator. PZT ceramic plates are divided into two groups and excited by sine and cosine voltages respectively. The proposed motor generates elliptical movements at two driving feet by superimposing of two...
An I-shaped ultrasonic motor using longitudinal vibrations is proposed, designed, and analyzed. The operating principle is discussed. The resonance frequencies of the three transducers are tuned to be close by modal analysis. Then, the vibration trajectories of the four tip ends of the two horizontal transducers are investigated by transient analysis. Oblique elliptical movements are generated on...
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