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Aircraft Electromechanical System Health Management Method Based on Power Line Spread Spectrum Carrier

A technology of electromechanical systems and health management, applied in general control systems, control/regulation systems, computer control, etc., can solve the problems of high cost and poor reliability of health management, and achieve the effect of improving confidentiality and reliability and reducing costs

Active Publication Date: 2014-01-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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Problems solved by technology

Summary of the invention In order to overcome the deficiencies of high cost and poor reliability of existing aircraft electromechanical system health management, the invention provides a

Method used

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  • Aircraft Electromechanical System Health Management Method Based on Power Line Spread Spectrum Carrier
  • Aircraft Electromechanical System Health Management Method Based on Power Line Spread Spectrum Carrier
  • Aircraft Electromechanical System Health Management Method Based on Power Line Spread Spectrum Carrier

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Embodiment Construction

[0025] 2) the data in the cache module is converted through the FPGA protocol conversion unit. The data after the protocol conversion is then

[0029] d) the data string to be sent is obtained by direct spread spectrum transformation to send data. Direct Spread Spectrum Transformation via PN Pseudo-Random Code

[0030] e) FPGA protocol conversion unit uses PN pseudo-random code sequence to handle emergencies. assigned to contingencies

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Abstract

The invention relates to an aircraft electromechanical system health management method based on power line spread spectrum carrier, which is used for low-cost management of the aircraft electromechanical system health. Its technical solution is to realize the collection of multi-category information through the power line spread spectrum carrier, adopting the method of decentralized collection and group number management; using the power line carrier as the communication mode, the multiplexing of the power grid and the communication network is realized by using time-sharing transmission to realize different types of information. The transmission of data reduces the cost of health management of the aircraft electromechanical system; the use of FPGA hardened spread spectrum communication technology improves the confidentiality and reliability of the system. At the same time, fast Fourier transform and neural network technology are used to realize the fusion processing of data in DSP, so as to estimate the state of the aircraft electromechanical system and further predict the fault. At the same time, the processing results are transferred to FLASH to facilitate off-line smoothing of data, which provides a basis for aircraft maintenance before take-off.

Description

Aircraft Electromechanical System Health Management Method Based on Power Line Spread Spectrum Carrier Technical field The present invention relates to a kind of aircraft electromechanical system health management method, especially the aircraft based on power line spread spectrum carrier Methods for health management of electromechanical systems. Background technique Aircraft electromechanical system comprises: hanging pod, aircraft fuel oil, environmental control, the 2nd power, power supply, hydraulic pressure, wheel brake Vehicles, life support and ejection rescue, landing gear and other systems. The significance of health management lies in using fewer sensors to realize accurate estimation of the state of the aircraft system, so as to ensure the normality of the aircraft electromechanical system at a lower cost, and the health of the aircraft electromechanical system Health management must have higher requirements for data reliability. Compared with electronic s...

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Application Information

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IPC IPC(8): G05B19/048G05B23/02
Inventor 史忠科辛琪王润全
Owner NORTHWESTERN POLYTECHNICAL UNIV
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