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An underwater acoustic communication system fault estimation method based on an FIR filter

A technology for underwater acoustic communication and system faults, which is applied in the fields of instruments, computing, and electrical digital data processing, etc., can solve the problems of lack of fault estimation technology and FIR filter fusion research, and achieve the effect of increasing accuracy and costing a lot of money

Active Publication Date: 2019-06-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current research on the fusion of fault estimation technology and FIR filter is still relatively scarce.

Method used

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  • An underwater acoustic communication system fault estimation method based on an FIR filter
  • An underwater acoustic communication system fault estimation method based on an FIR filter
  • An underwater acoustic communication system fault estimation method based on an FIR filter

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Embodiment 1

[0045] The working principle of underwater acoustic communication refers to information such as text, voice, and images, which are converted into electrical signals by an electric transmitter, and after the information is digitized by an encoder, the transducer converts the electrical signal into an acoustic signal. The acoustic signal transmits the information to the receiving transducer through the underwater acoustic channel. At this time, the acoustic signal is converted into an electrical signal. After the decoder deciphers the digital information, the electrical receiver converts the information into sound, text and pictures. The specific process can be simply summarized as figure 1 shown;

[0046] To rationally abstract the actual underwater acoustic communication process into a type of mathematical model according to its principles, the following conditions need to be met:

[0047] (1) The state equation and the output equation not only contain items common to the gen...

Embodiment 2

[0130] A FIR filter-based underwater acoustic communication system fault estimation system disclosed in one or more embodiments includes a server, the server includes a memory and a processor, and the processor includes:

[0131] System model building unit: Convert text, voice, image and other information into electrical signals through the electrical transmitter, and after the encoder digitizes the information, the transducer converts the electrical signals into acoustic signals. The acoustic signal transmits the information to the receiving transducer through the underwater acoustic channel. At this time, the acoustic signal is converted into an electrical signal. After the decoder deciphers the digital information, the electrical receiver converts the information into sound, text and pictures; The source signal, sink output signal, unknown additive disturbance signal and fault signal to be detected in the underwater acoustic communication process appear in the process, and t...

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Abstract

The invention discloses an underwater acoustic communication system fault estimation method based on an FIR filter. The method comprises the steps of determining a mathematical model of an underwatercommunication system; Determining all outputs in the time domain under the combined action of disturbance and faults in the finite time domain; Regarding all the quantities irrelevant to the to-be-detected fault information as disturbance, and estimating faults generated by the underwater communication system by using an FIR filter; And introducing a weight matrix to construct an estimation error,determining an evaluation index according to the estimation error, and obtaining an optimal filter gain when the evaluation index obtains a minimum value. The method has the beneficial effects that aplurality of complex and changeable uncertainties existing in an actual application process are utilized to summarized a fault diagnosis model into a discrete time-varying model with multiplicative noise uncertainty, on one hand, the accuracy of the fault diagnosis method based on the model is improved, and on the other hand, the disadvantages of high cost and space occupation based on hardware redundancy are greatly solved by utilizing a redundancy analysis thought.

Description

technical field [0001] The invention relates to the technical field of system fault diagnosis, and mainly aims at monitoring the health status of an underwater communication system, and provides a method for estimating a fault of an underwater acoustic communication system based on an FIR filter. Background technique [0002] In recent years, with the rapid development of ocean development technology and the urgent needs of the military, people have begun to pay more and more attention to the research and development of underwater communication systems. Therefore, at present and for a long time to come, the research on underwater acoustic communication will be the top priority of engineers and researchers. The security and reliability of the system is an old-fashioned issue that must be considered emphatically. Based on this, it is very important to monitor the real-time health and operation status of the system, so the research on the fault diagnosis technology of the unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 李岳炀吴玉涛徐元侯恩广张勤
Owner UNIV OF JINAN