Piezoelectric gyro equivalent circuit capable of considering energy loss

Abstract

The invention provides a piezoelectric gyro equivalent circuit capable of considering energy loss. The piezoelectric gyro equivalent circuit capable of considering energy loss comprises a non-resonant part equivalent circuit and a resonant part equivalent circuit, wherein the resonant part equivalent circuit comprises n parallel resonant circuits, and n is a positive integer which is greater than or equal to 1; each parallel resonant circuit consists of a dynamic capacitor, a dynamic inductor and a dynamic resistor; the non-resonant part equivalent circuit consists of a static capacitor, a serial resistor and a parallel resistor. When n resonance modes are required to be simulated by a piezoelectric gyro, only n parallel resonant circuits are required to be added. According to the equivalent circuit disclosed by the invention, the problems of a plurality of resonance modes and energy loss of the piezoelectric gyro can be described precisely, and precise numerical values can be provided for simulation of the piezoelectric gyro.

Description

technical field [0001] The invention relates to an equivalent circuit of a piezoelectric gyroscope, in particular to an equivalent circuit of a piezoelectric gyroscope considering energy loss. Background technique [0002] As a carrier angular velocity sensitive inertial sensor, the gyroscope is the core device in the inertial measurement unit (IMU), and plays a very important role in attitude control, navigation and positioning in traditional industrial fields such as aviation, aerospace, and ships. The micro gyroscope has the advantages of small size and quality, low power consumption, low cost, good environmental adaptability, and high integration, which not only partially replaces traditional gyroscopes in traditional industrial fields such as aviation, aerospace, and ships, but also can be used in the automotive industry, The market fields such as industrial automation control and attitude stability control of consumer electronics are expanding at an astonishing speed. ...

AI Technical Summary

Problems solved by technology

The disadvantage of the equivalent circuit of a general piezoelectric gyroscope is that it can only simply generate a resonant frequency to represent a resonant mode, and the equivalent circuit of a general piezoelectric gyroscope does not take into account the energy of the piezoelectric gyroscope loss problem

[0007] The above-mentioned patent does not take into account the energy loss of the piezoelectric gyroscope, and further, it can only simply generate a resonant frequency to represent a resonant mode, which still does not solve the above-mentioned technical problems

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