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FPGA-based ultrasonic guided wave piezoelectric ceramic driving power supply

A piezoelectric ceramic drive, ultrasonic guided wave technology, applied in the field of ultrasonic technology and power supply, can solve the problems of poor stability, low frequency, and difficult to debug, and achieve the effects of high precision, fast response, and improved integration.

Inactive Publication Date: 2019-08-06
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

Generally, the driving power supply requires different waveforms as input signals. The signal generator is usually implemented by using discrete components or single-chip ASICs, but its frequency is not high, its stability is poor, and it is not easy to debug. Both development and use are limited. Larger limit

Method used

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  • FPGA-based ultrasonic guided wave piezoelectric ceramic driving power supply
  • FPGA-based ultrasonic guided wave piezoelectric ceramic driving power supply
  • FPGA-based ultrasonic guided wave piezoelectric ceramic driving power supply

Examples

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Embodiment Construction

[0038] Further explanation will be given below in conjunction with the examples and accompanying drawings. The following examples are only descriptive language and not restrictive language, and cannot be used as a basis to limit the protection scope of the present invention.

[0039] The present invention is an FPGA-based ultrasonic guided wave piezoelectric ceramic drive power supply. The main idea is to combine FPGA and high-voltage linear amplifier circuit. This system can overcome the shortcomings of traditional piezoelectric ceramic drive power supplies. On the premise of improving power integration The effect of high precision and strong driving is realized, and it can be used in the dirt detection and descaling system based on ultrasonic guided wave.

[0040] The specific experimental steps are as follows:

[0041] An FPGA-based ultrasonic guided wave piezoelectric ceramic drive power supply, such as figure 1 It is a schematic diagram of the system, which mainly includ...

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Abstract

An FPGA-based ultrasonic guided wave piezoelectric ceramic driving power supply belongs to the field of ultrasonic technology and the field of power technology. According to the FPGA-based ultrasonicguided wave piezoelectric ceramic driving power supply presented by the invention, first, a DDS function is realized on an FPGA by compiling a Verilog HDL language and an excitation signal source is generated, then, the digital signal is converted into an analog signal by a digital-to-analog converter (DAC), and finally, the analog signal is transmitted to a high-voltage linear operational amplifier circuit, and the excitation signal is amplified to generate a desired excitation voltage signal which drives a piezoelectric sensor (PZT) to realize the function of ultrasonic guided wave fouling detection and removal. The FPGA is used as the platform, the DDS is used as the core algorithm, and DAC data conversion is combined with a high-voltage linear amplifier circuit. The integration degreeof the power supply is greatly improved while high precision and strong driving effect are achieved. The power supply makes up for the shortcomings of the traditional piezoelectric ceramic driving power supply. A new idea of full digital circuit is put forward for a fouling detection and removal system based on ultrasonic guided wave.

Description

technical field [0001] The invention relates to an FPGA-based ultrasonic guided wave piezoelectric ceramic drive power supply, which belongs to the technical fields of ultrasonic technology and power supply. Background technique [0002] With the rapid development of precision instruments, piezoelectric ceramics are widely used in the precision positioning industry due to their advantages such as nanoscale high precision, large load capacity and high performance. To some extent, the most important elements in the system are actuators and drivers, and the piezoelectric ceramic drive power determines the resolution and motion accuracy of piezoelectric ceramics. Generally, the drive power supply requires different waveforms as input signals. The implementation of the signal generator usually uses discrete components or single-chip ASICs, but its frequency is not high, its stability is poor, and it is not easy to debug. Both development and use are limited. Larger restrictions....

Claims

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Application Information

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IPC IPC(8): H02N2/18
CPCH02N2/181
Inventor 曲志刚王志援张亚丽杨杰王秋雨张全倪跃华
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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