Quad-redundancy signal monitoring and voting method and quad-redundancy signal monitoring and voting equipment
A signal monitoring and four-redundancy technology, applied in the direction of electrical testing/monitoring, testing/monitoring control systems, general control systems, 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 the complexity Degree, the effect of improving execution efficiency
Active Publication Date: 2015-12-23
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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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
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[0019] The present disclosure will be described in detail below in conjunction with the accompanying drawings.
[0020] 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.
[0021] Conventional four-redundancy signal voting method
[0022] Use A, B, C, and D to represent the four redundancy information respectively, let A.d, B.d, C.d, and D.d represent the data size of a certain channel, and A.No, B.No, C.No, and D.No represent the specific channel number .
[0023] 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.
[0024] 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.
[0025] Then, if V O Indicates the voting value, and th...
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A quad-redundancy signal monitoring and voting method and a piece of quad-redundancy signal monitoring and voting equipment are provided. According to the quad-redundancy signal monitoring voting method, when quad-redundancy signals Y1, Y2, Y3 and Y4 are normal, the quad-redundancy signals are voted and monitored according to the following steps: extracting the maximum value A, the medium value B and the minimum value C of the signals Y1, Y2 andY3; extracting the medium value M of Y4, A and C; and carrying out preliminary monitoring in the form of dual redundancy by using the medium values B and M, wherein all the signals are rejected by means of one ballot veto when abnormality is found, namely, that all the signals fail is determined. By adopting the quad-redundancy signal monitoring and voting method and the quad-redundancy signal monitoring and voting equipment disclosed by the invention, the computation complexity is reduced, and the system efficiency is improved.
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...
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Login to View More IPC IPC(8): G05B23/02
CPCG05B23/0208
Inventor 杜永良
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA