Torsional vibration sandwich-type beam-slab composite excitation ultrasonic motor, and drive platform and drive method thereof

[0037] Specific implementation mode one: combine Figure 1~Figure 11 , Figure 14~Figure 16 This embodiment will be described. This implementation mode provides a specific implementation scheme of a torsional vibration sandwich type beam-slab composite excitation ultrasonic motor. The torsional vibration sandwich beam-plate composite excitation ultrasonic motor is mainly composed of a fixed base 1, a first elastic body 2, a second elastic body 3, a rotating body 4, a key 5, a thrust ball bearing 6, a butterfly spring 7, and a nut 8 and output shaft 9.

[0038] The fixed base 1 is a plate structure, and the end surface of one side of the fixed base 1 is evenly provided with n through holes 1-1 structures along the circumferential direction, which are used to realize the fixed installation of the present invention, wherein n is greater than or equal to 1 Integer; the central position of the end surface on one side of the fixed base 1 is provided with a threaded hole 1-2 struc...

[0046] Specific implementation mode two: combination Figure 13~Figure 19 This embodiment will be described. This implementation mode provides a specific implementation scheme of a driving platform using a torsional vibration sandwich beam-plate composite excitation ultrasonic motor. The driving platform using a torsional vibration sandwich type beam-plate composite excitation ultrasonic motor is mainly composed of a fixed outer frame 1, a first elastic body 2, a second elastic body 3, a rotating platform 4, a rolling body 5, and a thrust ball bearing 6 , Belleville spring 7, fastening connector 8 and hexagon socket bolt 9, the second elastic body 3 in the drive platform of the torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and the second elastic body in the first specific embodiment The structural composition and connection mode of the two elastic bodies 3 are the same.

[0047] The fixed outer frame 1 is a thin-walled ring structure with...

[0054] Embodiment 3: This embodiment provides a specific embodiment of a torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and a driving method of a driving platform using the motor.

[0055] The specific implementation of the torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and the driving method of the driving platform using the motor is: the excitation group A is connected with an alternating current of a certain ultrasonic frequency (generally greater than 16kHz) The excitation electrical signal excites the first elastic body 2 where it is located to generate a torsional vibration mode; the excitation group B passes an AC excitation electrical signal of the same ultrasonic frequency (generally greater than 16kHz) to excite the second elastic body 3 where it is located A bending vibration mode is generated; the vibration excitation group A and the vibration excitation group B pass through the same amplitude o...