Modeling method suitable for equivalent circuit of electro-acoustic longitudinal vibration transducer

Abstract

The invention discloses a modeling method suitable for an equivalent circuit of an electro-acoustic longitudinal vibration transducer. An overall equivalent circuit of the electroacoustic longitudinalvibration transducer comprises a first equivalent circuit of an alternating current coil, a second equivalent circuit of a series circuit of a direct current bias coil and a linear direct current power supply, a mechanical equivalent impedance network and a three-winding equivalent transformer. According to the method, by constructing the first equivalent circuit, the second equivalent circuit, the mechanical equivalent impedance network and the three-winding equivalent transformer respectively to obtain the integral equivalent circuit finally by integration, the actual winding method of thethree-winding equivalent transformer does not need to be considered, meanwhile, by considering the influence of the second equivalent circuit on the impedance of the electro-acoustic longitudinal vibration transducer, the method has certain universality on the electro-acoustic longitudinal vibration transducer, and the impedance characteristic of the electro-acoustic longitudinal vibration transducer can be well reflected, so that the response of the overall equivalent circuit is relatively accurate, and further, guidance is provided for impedance matching between the power amplifier and the electro-acoustic longitudinal vibration transducer.

Description

Technical field [0001] The embodiment of the present invention relates to the field of power electronics technology, and in particular to a modeling method suitable for an equivalent circuit of an electroacoustic longitudinal vibration transducer. Background technique [0002] The electroacoustic longitudinal vibration transducer is a key device for the mutual conversion of electrical energy and sound energy. Its working principle is to use the magnetostrictive effect of magnetostrictive materials to realize the mutual conversion of electrical energy and mechanical energy. Because magnetostrictive materials have the characteristics of large strain, high energy density, fast low-frequency response, and wide response frequency, they are ideal materials for making high-power, low-frequency, and broadband ocean communication electroacoustic transducers. For magnetostrictive transducers, the magnetostrictive rod needs to work in a bias magnetic field. Generally, a DC coil is used to l...

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Problems solved by technology

At the same time, the DC coil circuit increases the complexity of the impedance network

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