Fault diagnosis method of switching current circuit

A switching current and circuit fault technology, applied in the field of switching current circuit fault diagnosis based on cloud model and intelligent group algorithm, can solve problems such as unsatisfactory results, and achieve the effect of easy operation processing, perfect randomness, and simplified data volume.

Active Publication Date: 2014-02-19
CHINA SINOGY ELECTRIC ENG
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Problems solved by technology

[0004] In recent years, researchers have made a lot of achievements in the fault diagnosis of analog technology in digital technology, such as fault diagnosis of switching current circuit by neural network, fault diagnosis of switching current circuit by gene

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  • Fault diagnosis method of switching current circuit
  • Fault diagnosis method of switching current circuit
  • Fault diagnosis method of switching current circuit

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Embodiment Construction

[0036] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0037] refer to figure 1 , the specific implementation process of the present invention is as follows:

[0038] Step 1) First, sensitivity analysis is performed on the switching current circuit components, the fault type is set, and the switching current circuit output data of different fault types are collected;

[0039] Step 2) Next, the obtained switch current circuit output current data of different fault types is subjected to principal component analysis processing to obtain dimensionality reduction feature vectors, and the dimensionality reduction feature vectors are cloud-processed to obtain cloud model digital feature quantities;

[0040] Step 3) use the fish swarm algorithm to optimize the weights and thresholds of the wavelet neural n...

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Abstract

The invention discloses a fault diagnosis method of a switching current circuit. The fault diagnosis method comprises the steps of: first, carrying out sensitivity analysis on components of the switching current circuit, setting the fault types and collecting fault information; then, carrying out pre-processing on the acquired information to acquire a dimensionality reduction characteristic vector and a cloud model digital characteristic value; optimizing a wavelet neural network structure weight value and a threshold value by adopting a fish swarm algorithm; and finally, carrying out diagnostic analysis on parameter data to acquire the fault type. Through adopting the fault diagnosis method, the mode of data processing is more reasonable, the network structure is more stable, the diagnosis accuracy is higher, and the convergence rate is higher.

Description

technical field [0001] The invention relates to a fault diagnosis method for a switching current circuit, in particular to a fault diagnosis method for a switching current circuit based on a cloud model and an intelligent group algorithm. Background technique [0002] The switched capacitor circuit based on the double-layer polysilicon process has high requirements for circuit excitation and needs nonlinear floating capacitor support, while the switched current element is based on the gate oxide capacitor current stored in the open state of the MOS transistor to maintain the drain current, which is relatively reduced. It eliminates the dependence on capacitance, thus achieving compatibility with digital CMOS process circuits. [0003] With the development of large-scale integrated circuits, the advantages of low-voltage and low-power characteristics of switching current circuits are increasingly revealed and initially developed; soft fault diagnosis outside the tolerance ran...

Claims

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Application Information

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IPC IPC(8): G01R31/28
Inventor 余汉华刘斌孙寰勇梅玉峰殷顺付铮铮
Owner CHINA SINOGY ELECTRIC ENG
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