Magnetoelectric gyroscope with high Q value

Abstract

The invention belongs to the technical field of an efficient power transmission device, and discloses a magnetoelectric gyroscope with a high Q value. The magnetoelectric gyroscope comprises a magnetic core and a copper coil uniformly surrounding the outer periphery of the magnetic core, wherein the magnetic core is of a sandwich structure which is formed by respectively bonding a layer of magnetostrictive rectangular sheet onto each of the upper and lower sides of a layer of piezoceramic rectangular sheet through epoxy resin glue; the materials of the magnetostrictive rectangular sheets are an iron-nickel-based constant-elasticity alloy; the materials of the piezoceramic rectangular sheets are PZT-8. The iron-nickel-based constant-elasticity alloy is used by the invention; by changing thematerials of the magnetostrictive layers and by using the characteristics of high mechanical quality factors and stable frequency response of the magnetostrictive layer materials at high frequency, the magnetostrictive layer materials and low-impedance piezoceramic are compounded to form the magnetoelectric gyroscope; the magnetostrictive layers sequentially complete the magnetic-mechanical conversion and mechanical-electric conversion in the magnetoelectric coupling process; meanwhile, the magnetoelectric coupling capability is also enhanced; the mechanical energy loss in the mechanical-electric conversion process is reduced; the power conversion efficiency of the magnetoelectric gyroscope is further improved.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency power transmission devices, and in particular relates to a magnetoelectric gyrator with a high Q value. Background technique [0002] In 1948, Tellegen hypothesized an ideal gyrator model through theoretical modeling, which described a passive, linear four-wire two-port network element that can realize I-V / V-I The conversion is accompanied by a direct conversion of the capacitive circuit to the inductive circuit. However, in the design and function realization of integrated circuits, it is often limited by the basic electrical components that can be connected to the circuit topology. The ordinary inductance components are limited by the precise regulation of the inductance, which is difficult to miniaturize and integrate in large-scale circuits. The "gyro" characteristic of the device can realize the reciprocal transformation of the inductive network and the capacitive network, so the ind...

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Problems solved by technology

According to the calculation formula of quality factor, it can be known that the patent Q= 61.9 / (62.03-61.78)=247.6, so the quality factor is not high, which will lead to low power conversion efficiency

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