Small-size integrated parallel rotation ultrasonic motor

An ultrasonic motor, an integrated technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of unsatisfactory parallel connection efficiency of multiple linear ultrasonic motors, In-depth, insufficient system and other problems, to achieve the effect of compact structure, high output efficiency, and excellent parallel efficiency

Inactive Publication Date: 2013-02-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although there have been some researches and applications on the parallel connection of ultrasonic motors, none of them are systematic and in-depth. In particular, there is no systematic theory to solve the problem of unsatisfactory efficiency of split-type parallel connection of multiple linear ultrasonic motors.

Method used

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  • Small-size integrated parallel rotation ultrasonic motor
  • Small-size integrated parallel rotation ultrasonic motor
  • Small-size integrated parallel rotation ultrasonic motor

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Embodiment

[0022] A small integrated parallel rotating ultrasonic motor of this embodiment is as Figure 1-3 As shown, it includes a stator 1 and a mover 2 as a bearing. The stator is composed of NN≥3 composite vibrators connected in parallel. The composite vibrators are connected through a flexible supporting element 3, and the composite vibrators are symmetrical around the mover 2 in the circumferential direction. place. Therefore, the force of the N composite vibrators on the mover is naturally balanced, and the entire stator can be processed in an integrated manner by wire cutting to ensure that the clamping of each composite vibrator is achieved without disturbing its vibration modal frequency, and the stator can also be made to move. The sub has a certain pre-pressure. Each composite vibrator is composed of two Langevin vibrators crossing each other at a certain angle, and the intersection angle of the two Langevin vibrators of each composite vibrator is between 0°-180°; The head...

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Abstract

The invention relates to a small-size integrated parallel rotation ultrasonic motor and belongs to the technical field of ultrasonic motors. The ultrasonic motor comprises a stator (1) and a mover (2) used as a bearing, the stator (1) is formed by parallelly connecting N (N>=3) composite vibrators by means of flexible support components, and the composite vibrators are symmetrically placed around the mover along the circumferential direction; each of the composite vibrators is formed by mutually intersecting two Langevin vibrators in a certain angle mode; simultaneously, heads of the two Langevin vibrators are connected into a whole to form drive feet (13) of the composite vibrators, and the Langevin vibrators are located on the same plane; and each of the Langevin vibrators is composed of an elastomer (11) and a piezoelectric ceramic piece (12), a positive pole of the piezoelectric ceramic piece faces outward, and a negative pole of the piezoelectric ceramic piece points to a base body surface of the elastomer (11). The small-size integrated parallel rotation ultrasonic motor is high in energy density, compact in structure and still capable of providing large output torque under the condition that the motor is longitudinally thin.

Description

technical field [0001] The invention relates to a rotary ultrasonic motor which is composed of a plurality of composite oscillators which are integrally connected in parallel circumferentially and symmetrically, and belongs to the field of ultrasonic motors. Background technique [0002] The linear ultrasonic motor is a new type of micro-motor developed and applied rapidly in the 1980s. It uses the inverse piezoelectric effect of the piezoelectric element and the ultrasonic vibration of the elastic body, and through the friction between the stator and the mover, the elastic The micro-vibration of the body is converted into the macroscopic linear (rotational) motion of the mover, which directly pushes the load. At present, the development of domestic linear ultrasonic motor is very fast. On the China Patent Network, there are many patents on linear ultrasonic motors. Among them, the rod structure linear ultrasonic motor has attracted much attention because the stator of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 姚志远胡正旭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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