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Analog circuit of unidirectional coupling fractional order self-sustaining electromechanical seismograph system

An analog circuit and fractional-order technology, which is applied in the field of analog circuits, can solve problems such as electromagnetic interference and fractional-order circuit realization, achieve high matching degree, realize fractional-order characteristics, and improve the effect of design freedom

Pending Publication Date: 2021-06-18
CHONGQING AEROSPACE POLYTECHNIC COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they do not address the difficulties of EMI and fractional circuit implementation

Method used

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  • Analog circuit of unidirectional coupling fractional order self-sustaining electromechanical seismograph system
  • Analog circuit of unidirectional coupling fractional order self-sustaining electromechanical seismograph system
  • Analog circuit of unidirectional coupling fractional order self-sustaining electromechanical seismograph system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Build a system dynamics model

[0044] A single fractional-order self-sustaining electromechanical seismograph system usually consists of two parts, the electrical part and the mechanical part. Its electrical part includes a linear inductor L, a nonlinear capacitor C NL , nonlinear resistance R NR and the emf e mounted in series with the first three electronic components v . Its mechanical part is suspended from the housing and consists of a shock absorber, a seismic mass and an adjustable spring. The two parts are coupled by coupling magnet coils and magnets, thus generating a magnetic field Westerlund and Ekstam used experimental results to reveal the fractional-order properties of different dielectrics of capacitors, such as where C 0 ,τ, and represent the linear part of the capacitor, time, current and voltage, respectively.

[0045] The voltages associated with non-linear resistance and capacitance can be expressed in fractional form

[0046]

...

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Abstract

The invention relates to an analog circuit of a unidirectional coupling fractional order self-sustaining electromechanical seismograph system, and belongs to the technical field of seismograph system control. The analog circuit comprises a driving system circuit and a response system circuit which are connected through a coupling item circuit, the driving system circuit and the response system circuit respectively comprise an external harmonic excitation signal, two voltage summation circuits, four fractional order proportional-integral equivalent operational amplification circuits, four inverted proportional operational amplification circuits and three multiplier parts. The circuit can accurately describe the dynamic characteristics of a seismograph system, the design freedom degree is improved, and the fractional order characteristics are achieved; and an analog circuit observation result is highly matched with a dynamic analysis result.

Description

technical field [0001] The invention belongs to the technical field of seismograph system control, and relates to an analog circuit of a one-way coupling fractional-order self-sustaining electromechanical seismograph system. Background technique [0002] Self-sustaining electromechanical seismograph systems with complex dynamics are sensitive instruments that record ground motions and waves propagating at certain frequencies. It is of great practical significance to study its nonlinear dynamics such as multi-stability, chaotic oscillation, sudden jump and pull-in under different working conditions. Its fractional-order modeling can more accurately describe the real motion process of engineering objects than integer-order modeling. In view of the advantages of simple implementation and easy modeling of analog circuits, it is necessary to construct analog experimental circuits to verify the results of kinetic analysis. [0003] So far, only sporadic references have reported ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/18G01V1/24
CPCG01V1/18G01V1/242
Inventor 罗绍华刘昭琴吴松励陈靖方陈小丽
Owner CHONGQING AEROSPACE POLYTECHNIC COLLEGE
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