Active fault tolerant design method of FADS (flush air data sensing) system

An atmospheric data and sensing system technology, applied in electrical digital data processing, computer-aided design, design optimization/simulation, etc., can solve the problems of small number of fault points, prone to misjudgment, low target diagnosis efficiency, etc., and achieve accurate diagnosis. , high reliability and high efficiency
CN105574271AInactive Publication Date: 2016-05-11CHINA ACAD OF AEROSPACE AERODYNAMICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACAD OF AEROSPACE AERODYNAMICS
Publication Date
2016-05-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an active fault tolerant design method of an FADS (flush air data sensing) system and belongs to the technical field of FADS. According to the active fault tolerant design method, a hierarchical diagnosis strategy is adopted, a pressure sensing point array is mounted on an aircraft to measure pressure at pressure sensing points, then whether faults occur to a meridian is judged according to a similarity relation matrix, a pressure filed fault diagnosis model is used for diagnosing a specific faulted point on the meridian, and whether a reference model or a reconstruction model is called for atmospheric parameter calculation is determined according to the fault condition. The method is accurate in diagnosis, high in efficiency, high in fault tolerant capacity and high in reliability.
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Description

technical field

[0001] The invention relates to the design of an embedded atmospheric data sensing algorithm, in particular to an active fault-tolerant design method for an embedded atmospheric data sensing system, and belongs to the technical field of embedded atmospheric data sensing. Background technique

[0002] The embedded air data sensing (FlushAirDataSensing, FADS) system relies on the pressure sensor array to measure the pressure distribution on the surface of the aircraft, and indirectly obtains flight atmospheric data such as static pressure, Mach number, angle of attack, and sideslip angle through specific algorithms. The FADS system is the main way for supersonic vehicles to obtain flight atmospheric data as flight control input, especially for air-breathing supersonic vehicles. However, the pressure measurement hole of the pressure measurement point is very small (usually 1mm ~ 2mm), so it is prone to failure, such as blockage, sensor failure, etc. The main pu...

Claims

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