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Dynamic matching device of ultrasonic power supply and method thereof

A technology of dynamic matching and power supply, applied in the direction of fluid using vibration, etc., can solve the problems of poor reliability of phase detection circuit, poor load carrying capacity, complex sampling circuit, etc., and achieve easy market promotion, low cost, and simple circuit structure Effect

Inactive Publication Date: 2013-08-21
HOHAI UNIV CHANGZHOU
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  • Abstract
  • Description
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Problems solved by technology

[0007] In order to solve the problems of poor load capacity of the dynamically matched ultrasonic signal generation circuit in the power ultrasonic system in the prior art; complex voltage and current signal sampling circuits and high cost; poor reliability and low precision of the phase detection circuit, the ultrasonic The dynamic matching device and method of the power supply has a simple circuit structure, high precision in the matching process, low cost, easy market promotion, and good application prospects

Method used

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  • Dynamic matching device of ultrasonic power supply and method thereof
  • Dynamic matching device of ultrasonic power supply and method thereof
  • Dynamic matching device of ultrasonic power supply and method thereof

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, the dynamic matching device of the ultrasonic power supply of the present invention includes ultrasonic signal generators, drive isolation circuits, ultrasonic power amplifiers, matching transformers, tuning inductors and ultrasonic transducers connected in series in sequence, and the ultrasonic transducers are installed at the bottom of the reaction vessel , also includes a voltage and current sampling circuit for collecting the real-time working voltage and working current at both ends of the ultrasonic transducer circuit including the tuning inductance, and the voltage and current sampling circuit sequentially passes through the rear stage isolation circuit, filter shaping circuit, programmable logic device The phase measurement unit is provided in the programmable logic device, and the PWM excitation pulse output terminal of the pr...

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Abstract

The invention discloses a dynamic matching device of an ultrasonic power supply and a method thereof. The dynamic matching device comprises an ultrasonic signal generator, a driving isolating circuit, an ultrasonic power amplifier, a matching transformer, a tuning inductor and an ultrasonic transducer which are successively in serial connection, and further comprises a voltage and current sampling circuit, wherein the voltage and current sampling circuit is successively connected through a backward stage isolating circuit, a filter shaping circuit and a programmable logic device (PLD), a phase measurement unit is arranged in the PLD, and a pulse width modulation (PWM) drive pulse output end of the PLD is connected with the ultrasonic signal generator. According to the dynamic matching device and the method thereof, frequency of ultrasonic driving signals is dynamically regulated through real-time monitoring of the impedance characteristic of an ultrasonic transducer circuit, a dynamic matching process is achieved, the fact that the transducer works on a resonance point all the time is guaranteed, the maximum available power is outputted, matching precision is high, the circuits are simple, achieving cost is low, achievement is easy, and a wide application prospect is provided.

Description

technical field [0001] The invention relates to the technical field of power ultrasonic systems, in particular to a dynamic matching device and method for an ultrasonic power supply. Background technique [0002] For any power ultrasound system, its equivalent impedance can be used to represent, so the total power of the power ultrasonic system is P = I 2 Z = I 2 R + jω ( L - 1 ω 2 C ) I 2 , where P 0 = I 2 R is useful work, P 1 = ω ( L - 1 ω ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
Inventor 董观利朱昌平徐斐曹智勇何贞兵单鸣雷陈秉岩韩庆邦李建
Owner HOHAI UNIV CHANGZHOU
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