Method and system for searching for resonant frequency point of transducer

Abstract

A system for finding a transducer resonant frequency, comprising: an initialization unit (11), a phase determination unit (12), an interval hopping control unit (13), a hopping interval generation unit (15), a frequency output control unit (17), a phase collection unit (16), and a resonant frequency point acquisition unit (14). Each hop allows a search range to be reduced by at least half of that of the previous interval, thus allowing for reduced amount of searches.

Description

technical field [0001] The invention relates to the technical field of transducers, in particular to a method and system for finding a resonance frequency point of a transducer. Background technique [0002] A typical ultrasonic transducer has a high quality factor and a steep resonance curve. Only when it works at its resonance frequency point can it have a large mechanical amplitude and high motor conversion efficiency. Therefore, the driving circuit of the ultrasonic transducer should be excited with its resonant frequency signal. [0003] After the equipment resonates, the operating frequency becomes larger and smaller within a certain range. Since the frequency range is determined by the line in advance, in this way, the operating frequency deviates from the real resonance point in most of the time period, not in the resonance When working at a certain point, it often results in waste of power consumption and reduced efficiency. [0004] In order to obtain the resonan...

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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method and system for finding the resonance frequency point of the transducer, which is used to solve the problem of slow speed and low efficiency in the prior art for finding the resonance frequency point of the transducer. question

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