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Coupling two-way linear ultrasonic electric machine of changer and its exciting method

A technology of ultrasonic motors and transducers, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. Single method, small output power and other problems, to achieve the effect of large thrust, high power and large output force

Inactive Publication Date: 2009-12-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a transducer-coupled bidirectional linear ultrasonic motor and its excitation method, which can solve the problems of small amplitude and low driving force in bending linear ultrasonic motors, Π-type linear ultrasonic motors and longitudinal bending composite linear ultrasonic motors. Large, low output power, single excitation method and bending linear ultrasonic motor is not easy to achieve two-way motion, poor control performance

Method used

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  • Coupling two-way linear ultrasonic electric machine of changer and its exciting method
  • Coupling two-way linear ultrasonic electric machine of changer and its exciting method
  • Coupling two-way linear ultrasonic electric machine of changer and its exciting method

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 Describe this embodiment, this embodiment is composed of mover 1, stator 101, linear bearing 2, bracket 3, connecting plate 4, elastic loading device 5, connecting bolt 6, screw one 7, bolt one 8, and bolt two 9; The stator 101 described above is composed of a tooth plate 11 and a Langevin transducer vibrator 12, and the tooth plate 11 is composed of a base plate 11-1, a tooth 11-2 and a friction layer 11-3; The teeth 11-2 are sequentially fixed on the base plate 11-1 from left to right by the first gear 11-2-1, the second gear 11-2-2, the third gear 11-2-3 and the fourth gear 11- Composed of 2-4; the first shifting tooth 11-2-1 is set at 1 / 8λ1 of the first wavelength λ1 of the standing wave formed by the substrate 11-1, and the second shifting tooth 11-2-2 is set at the place of the first wavelength λ1 of the standing wave formed by the substrate 11-1 At 5 / 8λ1 of the first wavelength λ1 of the standing wave, the third...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the first transducer vibrator 12-1 and the second transducer vibrator 12-2 of this embodiment are respectively composed of the front matching block 20, the first piezoelectric ceramic sheet 21, the thin copper sheet 22, and the second piezoelectric ceramic sheet. 23. The flange 24, the rear matching block 25 and the screw 26 are composed; the front matching block 20 is made of aluminum, steel, copper or titanium alloy, and the rear matching block 25 is made of aluminum, titanium alloy, steel or copper. The front matching block 20 is composed of an integrated small cylinder 20-1, a curved transition body 20-2 and a large cylinder 20-3 from front to back. Such design has better energy gathering effect and driving efficiency. High; transducer vibrator 1 12-1 and transducer vibrator 2 12-2 are provided with front matching block 20, piezoelectric ceramic sheet 1 21, thin copper sheet 22, pi...

specific Embodiment approach 3

[0010] Specific implementation mode three: the excitation method of the transducer coupling bidirectional linear ultrasonic motor of the present embodiment is completed in this way: the excitation mode of energizing the transducer vibrator 12-1 separately is adopted, and by applying the transducer vibrator 12-1 12-1 coincides with the high-frequency AC voltage, which can realize the movement of the mover 1 to the left; in this embodiment, the excitation method of separately energizing the transducer vibrator 2 12-2 can also be used, by applying the vibration with the transducer vibrator The high-frequency AC voltage matched by the two 12-2 can realize the rightward movement of the mover 1; in this embodiment, the exciter that simultaneously energizes the transducer vibrator 1 12-1 and the transducer vibrator 2 12-2 can also be used. Vibration mode, at this time, the phase difference of the input signals of transducer one 12-1 and transducer two 12-2 is generally 90° or 270°. T...

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Abstract

A transducer coupling two-way linear ultrasonic motor and an excitation method thereof relate to an ultrasonic motor and an excitation method thereof. For bending type, ∏ type and longitudinal bending compound linear ultrasonic motor, there are problems of small amplitude, small driving force, small output power, and single excitation method. There are four shifting teeth (11-2) of the present invention and they are respectively fixed on the substrate (11-1). The upper end surface of the shifting teeth (11-2) is pasted with a friction layer (11-3), and the transducer vibrator ( 12) is connected to the base plate (11-1), the lower end surface of the mover (1) is in contact with the upper end surface of the friction layer (11-3), and the upper end surface of the mover (1) is in contact with the linear bearing (2). contact, an elastic loading device (5) is installed between the transducer vibrator (12) and the bracket (3). The present invention utilizes the longitudinal vibration mode of two or more transducer vibrators, and is connected to the substrate through screws, so that the shifting tooth plate is coupled with bending vibration, so that the shifting teeth are deflected in different directions. By determining the position of the shifting teeth and the energy conversion The position of the vibrator is determined, and the corresponding excitation method is used to realize the two-way linear motion of the ultrasonic motor.

Description

technical field [0001] The invention relates to an ultrasonic motor and an excitation method thereof. Background technique [0002] Ultrasonic motor is a new type of motor gradually developed in the 1980s. Its basic working principle is to use the inverse piezoelectric effect of piezoelectric ceramics to excite elastic bodies to make micro-vibrations in the ultrasonic frequency domain, and convert them into vibrations of moving bodies through friction transmission. Macro turn or move. Linear ultrasonic motor is a new product under development. At present, linear ultrasonic motor is divided into three types: curved linear ultrasonic motor, Π-type linear ultrasonic motor and longitudinal bending compound linear ultrasonic motor. There are three types The linear ultrasonic motor usually has a small amplitude, a small driving force, a small output power, and a single excitation method. In particular, the curved linear ultrasonic motor is not easy to achieve bidirectional motio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00H02N2/02H02N2/04
Inventor 曲建俊程廷海周宁宁
Owner HARBIN INST OF TECH
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