Monitoring and processing method for pressure faults of embedded air data system

A technology of atmospheric data and system pressure, applied in the measurement of fluid pressure, simultaneous measurement of multiple hydraulic valves, and by measuring the acceleration and deceleration rate of fluid, etc., can solve the problems of acquisition and processing circuit failure, pipeline leakage, parameter calculation divergence, etc. achieve the effect of improving usability

Inactive Publication Date: 2015-04-29
TAIYUAN AERO INSTR
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Problems solved by technology

[0006] The present invention aims to solve the problems such as blockage of the pressure measuring hole, pipeline leakage, pressure sensor failure, collection and processing circuit failure, and signal transmission error in the embedded air data sensing system (FADS), which lead to the final failure of the system; or ar

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  • Monitoring and processing method for pressure faults of embedded air data system
  • Monitoring and processing method for pressure faults of embedded air data system
  • Monitoring and processing method for pressure faults of embedded air data system

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Embodiment 1

[0015] Embodiment 1: a kind of embedded atmospheric data system pressure failure monitoring processing method, comprises the following steps:

[0016] (1) Using the wind tunnel test data and flight test data, according to the cross layout of the pressure measuring holes, establish the relevant database of the pressure points of each pressure measuring hole, and pre-install the relevant database in the embedded air data system. The relevant database refers to the relationship between the pressure point and the pressure points related to it, and contains at least two related pressure points;

[0017] (2) Determine the fault location: observe the pressure value of the pressure point of the pressure measuring hole and its change time: A. When the pressure value is within the range of pressure limit 1.7-150kpa and the change is within ±150pa or unchanged within 5s, then Query the relational data related to the pressure point in the database. When the rules in the database table are...

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Abstract

The invention belongs to the technical field of embedded air data systems for aerospace vehicles, provides a monitoring and processing method for pressure faults of an embedded air data system, and aims to solve the problem of system final fault caused in case of pressure hole blockage, pipeline leakage, pressure sensor faults, acquisition and processing circuit faults, signal transmission faults and the like occurred in an FADS, or the problem of parameter operation divergence which finally causes impacts on flight control. A correlation matrix among pressure spots is determined by using a wind tunnel test and flight test data according to the distribution of pressure holes, and the correlation matrix is pre-assembled in the FADS; fault location is performed through a finally obtained pressure value, the pressure value of a fault point is estimated by using a least squares curve fitting method, and the pressured value obtained through evaluation is used for participating follow-up operation. The embedded air data system pressure fault monitoring and processing method provided by the invention can effectively process pressure hole blockage, pipeline leakage, pressure sensor faults, processing circuit faults, signal transmission faults, pressure value fault and the like, can provide reasonable atmospheric parameters to a mobile system, and can effectively improve the practicability of an embedded air data system.

Description

technical field [0001] The invention belongs to the technical field of air vehicle embedded air data systems, and in particular relates to a pressure fault monitoring and processing method of an embedded air data system. Background technique [0002] Embedded Air Data Sensing System (FADS), as an advanced air data system, senses the flow characteristics through a set of pressure holes embedded in the surface of the aircraft, and then calculates the pressure and finally obtains the pressure altitude, indicated airspeed, Mach Atmospheric parameters such as number, lift speed, angle of attack, sideslip angle, etc. Compared with the traditional air data system (ADS), FADS has many potential advantages such as high integration. When the aircraft has high speed and stealth requirements, FADS has irreplaceable advantages. With the rapid development of the aviation industry, the application of FADS has been widely used in recent years. [0003] Although the FADS system has many ad...

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Application Information

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IPC IPC(8): G01L15/00G01M3/28G01L27/00
Inventor 常悦王文龙岳俊陈文鋆赵林庆
Owner TAIYUAN AERO INSTR
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