High-dynamic charge type piezoelectric ceramic drive power supply

A piezoelectric ceramic drive, piezoelectric ceramic technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of low output bandwidth, large leakage current, dynamic Poor characteristics, etc.

Inactive Publication Date: 2014-10-01
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aforementioned technical solutions all have problems such as large leakage current, poor dynamic characteristics, and low output bandwidth.

Method used

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  • High-dynamic charge type piezoelectric ceramic drive power supply
  • High-dynamic charge type piezoelectric ceramic drive power supply
  • High-dynamic charge type piezoelectric ceramic drive power supply

Examples

Experimental program
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Embodiment Construction

[0031] Such as figure 1 As shown, the signal output terminal VIN of the control module is connected to the positive terminal of the power amplifier A, wherein the control module is composed of a host computer, MCU, and DA converter. This is the prior art, and the power operational amplifier A is a high-voltage MOSFET operational amplifier. The terminals are connected with field effect transistors Q1, Q2, Q3, and Q4, the model is 2N4416, which are used for input protection. The signal output terminal of the power amplifier A is connected to a precision capacitor Cc. The precision capacitor Cc is a metal polycarbonate precision capacitor. The other end of the precision capacitor Cc is connected to a piezoelectric ceramic Cp, and one end of the piezoelectric ceramic Cp is grounded. One end of the precision capacitor Cc and one end of the piezoelectric ceramic Cp are respectively connected to the input end of the error integration operational amplifier. The error integrator is OPA...

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PUM

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Abstract

The invention relates to a high-dynamic charge type piezoelectric ceramic drive power supply. The signal output end of a control module is connected with the forward end of a power amplifier, the signal output end of the power amplifier is connected with a piezoelectric ceramic element, and the piezoelectric ceramic element is connected with a precise capacitor. The high-dynamic charge type piezoelectric ceramic drive power supply is characterized in that one end of the precise capacitor and one end of the piezoelectric ceramic element are respectively connected with the input end of an error integral operational amplifier, and the output end of the error integral operational amplifier is connected with the negative end of the power amplifier.

Description

technical field [0001] The invention relates to a high dynamic charge type piezoelectric ceramic drive power supply. Background technique [0002] With the continuous development of science and technology, the operating objects of people's research go deep into the microscopic field. Piezoelectric ceramics have the characteristics of small size, high displacement resolution, high frequency response, no noise, no heat, etc., and are an ideal micro-drive element. Piezoelectric ceramic actuators are applied to many microscopic fields, such as various operations of polymers and biological cells, manufacturing and testing of micro-electromechanical systems, ultra-precision machining, production of large-scale integrated circuits, microsurgery, scanning probe microscopy ( SPM) system, optical fiber docking, precision positioning of semiconductor plate making, etc. The high dynamic performance of piezoelectric ceramics depends to a large extent on the performance of the driving p...

Claims

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Application Information

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IPC IPC(8): H02N2/06
Inventor 汝长海庞明王勇孟占凯
Owner HARBIN ENG UNIV
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