Resonant frequency tracking system and method for giant magnetostrictive transducer

A technology of giant magnetostriction and resonant frequency, applied in instruments, spectrum analysis, measurement devices, etc., can solve the problem of unstable frequency drift, etc., and achieve the effect of good applicability

Active Publication Date: 2018-12-21
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

[0003] Based on this, it is necessary to provide a giant magnetostrictive transducer that can ensure that the giant magnetostrictive transducer always works in the best state

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  • Resonant frequency tracking system and method for giant magnetostrictive transducer
  • Resonant frequency tracking system and method for giant magnetostrictive transducer
  • Resonant frequency tracking system and method for giant magnetostrictive transducer

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0036] See Figure 1-2 , the application provides a giant magnetostrictive transducer resonance frequency tracking system comprising a single frequency signal generator 10, a filter amplifier circuit 20, a giant magnetostrictive transducer 30, a compensation circuit 40, an electrical signal sampling circuit 50 and a computer 60. The input end of the filter amplifier circuit 20 is connected to the output end of the single frequency signal generator 10 . Both ends of the giant magnetostrictive transducer 30 are respectively connected to the positive and negative poles of th...

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Abstract

The application provides a resonant frequency tracking system and method for a giant magnetostrictive transducer. A compensation circuit and an electrical signal sampling circuit are connected in series in a loop of the resonant frequency tracking system of the giant magnetostrictive transducer. The electrical signal sampling circuit measures and collects an electrical signal as sampling data andreturns the sampling data to the computer for processing through a data interface. According to the resonant frequency tracking system, real-time tracking of resonant frequencies of the giant magnetostrictive transducer is realized by setting relevant parameters such as a tracking increment, a tracking decrement, and an acquisition threshold. When a frequency drift of the resonant frequency tracking system of the giant magnetostrictive transducer is caused by a load change or a temperature rise change, tracking is carried out within a parameter range of tracking accuracy and tracking sensitivity by using the resonant frequency tracking system and method, so that energy conversion efficiency maximization is realized.

Description

technical field [0001] The present application relates to the technical field of ultrasonic precision special processing, in particular to a system and method for tracking the resonant frequency of a giant magnetostrictive transducer. Background technique [0002] In recent years, with the emergence of rare-earth giant magnetostrictive materials with high energy density and high magnetostriction coefficient, the research on giant magnetostrictive transducers has received great attention, especially in the field of high-power high-speed cutting. Under the action of the ultrasonic frequency electric signal of the excitation coil, the ultrasonic amplitude generated at the end of the horn can reduce the cutting force during the machining process, prolong the service life of the tool and improve the machining efficiency. As an inductive load, the giant magnetostrictive transducer needs to be compensated by the circuit so that when it works in the resonance state of the processing...

Claims

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Application Information

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IPC IPC(8): G01R23/00
CPCG01R23/00
Inventor 张建富冯平法周辉林郁鼎文吴志军
Owner TSINGHUA UNIV
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