A Multi-Stator Axial Laminated Ultrasonic Motor
An ultrasonic motor and multi-stator technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of single structure of ultrasonic motors and difficult expansion, and achieve Effects of improving frictional driving ability, improving working life and reliability, and high energy efficiency utilization
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Embodiment 1
[0054] like Figure 1~Figure 4 As shown, a multi-stator axially laminated ultrasonic motor includes a stator 1, a rotor 2 and an output shaft 3. The number of the stator 1 is two, the number of the rotor 2 is three, and the output The shaft 3 is one; the rotor 2 and the stator 1 are stacked in sequence, the rotor 2 includes a first rotor 201, a second rotor 202 and a third rotor 203; the stator 1 includes a first stator 101 and a second rotor 203. Two stators 102 , the output shaft 3 passes through the first rotor 201 , the first stator 101 , the second rotor 202 , the second stator 102 , and the third rotor 203 in sequence and is fixedly connected with a nut 4 , the stator 1 drives the rotor 2 rotates to form power output; each stator 1 corresponds to two rotors 2, and the middle rotor 2 is shared by the second rotor 202, that is, it is connected to the first stator 101 above it and the second stator 102 below it.
[0055] Each stator 1 includes a hollow stator plate 11 and ...
Embodiment 2
[0065] On the basis of Embodiment 1, this embodiment is different from Embodiment 1 in that a four-phase driving method is adopted. The arrangement rule and signal connection method of piezoelectric ceramic elements 13 on the stator ring 12 on the pads are different from those in Embodiment 1. Specifically:
[0066] like Image 6 As shown, the piezoelectric ceramic element 13 and the electrodes include four groups of standing wave driving units, namely unit a, unit b, unit c and unit d, each unit including two piezoelectric ceramic elements on the front side of the stator ring 12 13 and the two piezoelectric ceramic elements 13 on the opposite side of the stator ring 12, the piezoelectric ceramic elements 13 are arranged in sequence according to unit a, unit b, unit c, and unit d, and are cyclically arranged on the front and back surfaces of the stator ring 12;
[0067] In the unit a, unit b, unit c, and unit d, the polarized positive poles 131 of the two piezoelectric cerami...
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