Linear ultrasonic motor with single excitation source and bidirectional actuation
A linear ultrasonic motor, single-excitation technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as complex chute processing technology, and achieve processing efficiency High, simplified drive control circuit, simple processing effect
Pending Publication Date: 2019-08-16
HUAQIAO UNIVERSITY
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Problems solved by technology
For example, the patent number is CN106733571A, and the patent name is a patent for a single-excitation longitudinal-bending composite vibration ultrasonic transducer. This invention stimulates two modes of piezoelectric vibrators at the same time under single-source excitation. This invention is an application in Ultrasonic transducer in the field of processing, the transducer proposes to use the inclined groove on the structure to realize single excitation and dual mode, but the processing technology of the inclined groove is relatively complicated
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[0022] Please check figure 1 , a linear ultrasonic motor with bidirectional action by a single excitation source, which includes a mover 5, a stator 9 and an elastic abutment mechanism 6, the elastic abutment mechanism 6 is connected to the stator 9 and can make the stator 9 and the mover 5 The stator 9 includes a front cover plate 2 fixedly connected together, a rear cover plate 1 and a piezoelectric ceramic sheet 3 between the front cover plate 2 and the rear cover plate 1 (the front cover plate 3 can be connected by a bolt. Cover plate 2, rear cover plate 1 and piezoelectric ceramic sheet 3 are fixedly connected), the central axis of stator 9 and the moving direction of mover 5 form an inclination angle relationship of an acute angle, and the center axis of stator 9 on this front cover plate 2 Arrangement circular holes 4 are arranged in the direction where the axis forms an acute angle. In this embodiment, the circular hole 4 is a through hole, and the through hole runs t...
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The invention discloses a linear ultrasonic motor with a single excitation source and bidirectional actuation. The linear ultrasonic motor comprises a rotor, a stator and an elastic jacking mechanism.The elastic jacking mechanism is connected with the stator and enables the stator to be contacted with the rotor in a jacking way. The stator comprises a front cover plate and a rear cover plate which are fixedly connected together and a piezoelectric ceramic sheet which is positioned between the front cover plate and the rear cover plate. An acute inclined angle relationship is formed between the central axis of the stator and the moving direction of the rotor. The front cover plate is provided with arranged circular holes in the direction at the acute angle with the central axis of the stator. The linear ultrasonic motor has the following advantages: the processing technology is simple, the bidirectional actuation of the motor can be completed by only using a set of piezoelectric ceramic sheet and the single excitation source and the drive and control circuit of the ultrasonic motor can be simplified.
Description
technical field [0001] The invention relates to the field of motors, in particular to a linear ultrasonic motor with bidirectional action by a single excitation source. Background technique [0002] At present, compared with other types of ultrasonic motors, longitudinal bending composite ultrasonic motors have become one of the research hotspots at home and abroad in recent years because of the advantages of large torque-to-volume ratio. This type of ultrasonic motor has the characteristics of high precision, fast response and compact structure, and has a wide range of applications. [0003] The existing longitudinal-bending composite vibration mode ultrasonic motor, such as the patent publication number CN101656490A, the patent name is a patent for a linear ultrasonic motor with longitudinal-bending composite mode, all of which realize longitudinal vibration and bending through two sets of piezoelectric ceramic sheets. Vibrate two modes, and change its vibration form by c...
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Patent Timeline
Login to View More IPC IPC(8): H02N2/00H02N2/02H02N2/04H02N2/06
CPCH02N2/003H02N2/02H02N2/043H02N2/06
Inventor 王寅陈紫嫣叶瑞芳范伟
Owner HUAQIAO UNIVERSITY