Four-redundancy signal monitoring voting method and equipment

A signal monitoring and four-redundancy technology, applied in the direction of digital control, electrical program control, etc., can solve the problems of reducing the operating efficiency and increasing complexity of the fly-by-wire flight control system, so as to reduce time complexity, improve work efficiency, simplify The effect of the processing algorithm

Active Publication Date: 2018-01-30
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

Different from the two-redundancy and three-redundancy systems, the complexity of the four-redundancy signal is greatly increased during redundancy management, which reduces the operating efficiency of the fly-by-wire flight control system

Method used

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  • Four-redundancy signal monitoring voting method and equipment
  • Four-redundancy signal monitoring voting method and equipment
  • Four-redundancy signal monitoring voting method and equipment

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Embodiment Construction

[0021] The present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0022] First, in order to facilitate the understanding of the four-redundancy monitoring voting method provided by the present disclosure, the conventional four-redundancy table method and three-redundancy voting method are described.

[0023] Conventional four-redundancy signal voting method

[0024] Use A, B, C, D to represent the four redundancy information respectively, let A.d, B.d, C.d, D.d represent the data size of a certain channel, and A.No, B.No, C.No, D.No represent the specific channel number .

[0025] First, sort the signal data by its size. For example, A.d≥B.d≥C.d≥D.d, and set the signal deviation threshold L.

[0026] Then, calculate the interpolation of each signal data in pairs: Δ 1 = A.d-B.d, Δ 2 = B.d-C.d, Δ 3 = C.d-D.d, Δ 4 = A.d-D.d, Δ 5 = A.d-C.d, Δ 6 =B.d-D.d.

[0027] Then, if V O Indicates the voting value, and the four-redun...

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Abstract

The invention provides a monitoring-determining method and device for four redundancy signals Y1, Y2, Y3 and Y4. The method comprises that when all signals are normal, the three signals Y1, Y2 and Y3 are used for redundancy monitoring and determining, and the signal Y4 serves as a standby signal; when the signals Y1, Y2 and Y3 are all normal, a determining value YO of the signals Y1, Y2 and Y3 to monitor the signal Y4 and determine whether the signal Y4 is normal; and when abnormity is found in the signals Y1, Y2 and Y3, the standby signal Y4 is used to assist in determination of an abnormal signal, and a fault is thus confirmed. The method of the invention remains the efficacy of the four redundancy signals, and a four redundancy monitoring-determining strategy is simplified when the system signals are normal.

Description

technical field [0001] The present disclosure relates to redundancy management technology of fly-by-wire flight control system, and in particular to a four-redundancy signal monitoring and voting method and equipment. Background technique [0002] The application of fly-by-wire flight control system provides an opportunity to optimize aircraft performance and reduce the burden on pilots, but it also brings certain risks. For example, traditional mechanical or hydraulic control systems usually fail gradually, while the failure of the flight control computer or sensors in the fly-by-wire flight control system will immediately make the aircraft uncontrollable, which makes some of the advantages of the fly-by-wire control system irrelevant. It doesn't make sense. In order to solve this problem, redundant fault-tolerant architecture is generally adopted in the design of fly-by-wire flight control system. That is, there is a margin in the configuration from the flight control co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/19
CPCG05B19/19Y02P70/10
Inventor 杜永良
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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