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Solid state power amplification fault diagnosis method

A solid-state power amplifier and fault diagnosis technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as lack of fault diagnosis methods

Inactive Publication Date: 2015-12-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Description
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  • Application Information

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Problems solved by technology

In order to ensure the normal operation of the solid-state power amplifier, it is necessary to respond quickly when the solid-state power amplifier fails, which requires fault diagnosis of the solid-state power amplifier, and there are almost no fault diagnosis methods for the solid-state power amplifier.

Method used

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Embodiment 1

[0030] According to the composition principle of a solid-state power amplifier, such as figure 1 As shown, construct the T-S fuzzy fault tree of solid-state power amplifier, such as figure 2 shown. The establishment of the T-S gate rule needs to divide the degree of failure first. Here, it is divided into three categories, and 0, 0.5, and 1 are used to represent no failure, semi-failure, and complete failure, as shown in Table 3, and the probability of failure is It is necessary to combine the existing data or conduct a large number of experiments to construct the T-S gate rule, as shown in Table 1 and Table 2. where α 1 、α 2 、α 3 、α 4 、α 5 、α 6 、α 7 Respectively represent the bottom event cable failure, fan failure, power supply failure, temperature over-limit fault, current over-limit fault, forward power over-limit fault, reflected power over-limit fault, β 1 Indicates the failure of the final stage module in the middle event, and β indicates the failure of the so...

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Abstract

The present invention belongs to the field of microwave solid state power amplifier, relates to a solid state power amplification and fault diagnosis, and provides a solid state power amplification fault diagnosis method based on a fuzzy fault tree and a Bayesian network. The method combines the advantages of both fuzzy fault tree and Bayesian network, converting the T S fuzzy fault tree into the Bayesian network, then performing derivation according to a rule of Bayesian network to obtain an important degree of each basis event, namely a component fault, and finally performing fault dropping according to the magnitude of important degree, so as to achieve fault diagnosis. The solid state power amplification fault diagnosis method provided in the present invention not only fills the blank of solid state power amplication fault diagnosis field, but also is simple in calculation and more practical due to combination of the advantages of both fuzzy fault tree and Bayesian network compared with the traditional fault diagnosis method.

Description

technical field [0001] The invention relates to solid-state power amplifier and fault diagnosis, and provides a solid-state power amplifier fault diagnosis method based on fuzzy fault tree and Bayesian network. It belongs to the field of microwave solid-state power amplifiers. Background technique [0002] With the development of electronic technology, the operating frequency of measurement and control, communication, and radar has been developed to the millimeter wave frequency band. The power amplifier unit at the end of the transmission chain is the core equipment in the transmission chain. etc. have a decisive influence. [0003] The importance of the solid-state power amplifier as a key component is self-evident. Only by ensuring the normal operation of the solid-state power amplifier can the normal operation of the entire system be realized. In order to ensure the normal operation of the solid-state power amplifier, it is necessary to respond quickly when the solid-s...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 于永斌程诗叙门乐飞杨辰宇刘兴文胡青青李成张欢雷飞邓建华张容权蔡竟业
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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