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Multi-frequency, broadband, two-way drive device for ultrasonic motor

An ultrasonic motor, two-way drive technology, used in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. problem, to achieve the effect of convenient frequency sweep requirements, high voltage, and wide frequency band

Inactive Publication Date: 2011-08-31
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, most ultrasonic motors use two phase shifts of 90 degrees, and the direct addition of two signal sources cannot guarantee the phase difference between the two signals, so the method mentioned in this article is not universal

Method used

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  • Multi-frequency, broadband, two-way drive device for ultrasonic motor
  • Multi-frequency, broadband, two-way drive device for ultrasonic motor
  • Multi-frequency, broadband, two-way drive device for ultrasonic motor

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Embodiment Construction

[0017] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0018] Such as figure 1 As shown, this embodiment includes: six-way sinusoidal signal generating circuit 1, filter circuit 2, optocoupler isolation circuit 3, composite feedback amplifier circuit 4, and protection circuit 5, and the signal output terminals of six-way sinusoidal signal generating circuit 1 are connected to the filter circuit 2, the signal input end of the filter circuit 2 is connected to the signal output end of the optocoupler isolation circuit 3, the signal output end of the optocoupler isolation circuit 3 is connected to the signal input end of the ...

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Abstract

The invention relates to a multiple frequency, broad band, double way drive device for ultrasound motor, which comprises a signal generating circuit, an optical couple isolation circuit, a compound reaction type amplification circuit and a protection circuit. A six way sine signal is generated by the signal generating circuit, which is transported to the compound reaction type amplification circuit and the protection circuit to perform protection and amplification by filtering and isolating and output two way amplifying signal to supply power to the ultrasound motor terminal. The invention avoids the probloms that the sine signal which is obtained by filtering of the filtering circuit is not stable, the volume miniaturization and the bandwidth of the transformer is limited, and ultrasound motors with different structures need different filtering circuits. The invention can perform modulation for frequence and amplitude on computer conveniently, and be more convenient for frequency sweep requirment of the ultrasound motor.

Description

technical field [0001] The invention relates to a drive device in the technical field of ultrasonic motors, in particular to a multi-frequency, broadband, and dual-channel drive device for ultrasonic motors. Background technique [0002] The ultrasonic motor is a new type of drive that uses the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration to convert the microscopic deformation of the material into the macroscopic motion of the rotor (mover). Compared with the traditional electromagnetic motor, the piezoelectric ceramic sheet in the ultrasonic motor replaces thousands of copper wires in the electromagnetic motor. It has the advantages of compact structure, small size, low speed, large torque, fast response, and self-locking when power off. , high power density (3-10 times that of the electromagnetic type) and no electromagnetic interference, accurate movement and other advantages, it has broad application prospects in aerospace, robotics, me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00H02N2/06H02N2/14
Inventor 杨明陈许英郑喆俊李世阳
Owner SHANGHAI JIAO TONG UNIV
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