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Alarm voting method for three-redundancy system of airplane

A three-redundancy, aircraft-based technology, applied in the field of civil aviation, can solve problems such as false alarms in voting methods, and achieve the effect of improving robustness and flight safety

Active Publication Date: 2022-07-22
商飞软件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aircraft three-redundancy system alarm voting method introduces the signal prediction value, compares the signals of each signal channel with the accurate signal prediction value to find the difference, and then compares it with the preset threshold in the system. , which solves the problem of false alarms that may exist in the voting method of the traditional redundancy system alarm referring to the intermediate value of the current signal

Method used

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  • Alarm voting method for three-redundancy system of airplane
  • Alarm voting method for three-redundancy system of airplane
  • Alarm voting method for three-redundancy system of airplane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1, as figure 2 As shown, an aircraft three-redundancy system alarm voting method includes the following steps:

[0033] Collect the signal values ​​of the three channels corresponding to each channel category in the aircraft three-redundancy system, and sort the signal values ​​of the three channels of each channel category according to their size, and obtain the maximum signal value corresponding to each channel category, Intermediate signal value, minimum signal value;

[0034] Find the difference between the largest signal value and the smallest signal value in each channel class ,Will Corresponding to the preset threshold in the aircraft three-redundancy system to compare; when When , it is judged that the three channel signals of the corresponding channel category are normal, and the intermediate signal value (ie mid value) is output by voting, otherwise, go to the next step;

[0035] Use the valid signal values ​​in the first 3 sampling periods ...

Embodiment 2

[0044] Example 2, as image 3 As shown, an aircraft three-redundancy system alarm voting method includes the following steps:

[0045] Collect the signal values ​​of the three channels corresponding to each channel category in the aircraft three-redundancy system, and sort the signal values ​​of the three channels of each channel category according to their size, and obtain the maximum signal value corresponding to each channel category, Intermediate signal value, minimum signal value;

[0046] Find the difference between the largest signal value and the smallest signal value in each channel class ,Will Corresponding to the preset threshold in the aircraft three-redundancy system to compare; when When , it is judged that the three channel signals of the corresponding channel category are normal, and the intermediate signal value (ie mid value) is output by voting; otherwise, go to the next step;

[0047] Use the valid signal values ​​in the first 10 sampling periods ...

Embodiment 3

[0051] Example 3, as Figure 4 As shown, an aircraft three-redundancy system alarm voting method includes the following steps:

[0052] Collect the signal values ​​of the three channels corresponding to each channel category in the aircraft three-redundancy system, and sort the signal values ​​of the three channels of each channel category according to their size, and obtain the maximum signal value corresponding to each channel category, Intermediate signal value, minimum signal value;

[0053] Find the difference between the largest signal value and the smallest signal value in each channel class ,Will Corresponding to the preset threshold in the aircraft three-redundancy system to compare; when When , it is judged that the three channel signals of the corresponding channel category are normal, and the intermediate signal value (ie mid value) is output by voting; otherwise, go to the next step;

[0054] Use the valid signal values ​​in the first 10 sampling periods...

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Abstract

The invention provides an alarm voting method for an aircraft tri-redundancy system. The alarm voting method comprises the following steps: collecting a maximum signal value, an intermediate signal value and a minimum signal value corresponding to each channel category; comparing the difference between the maximum signal value and the minimum signal value with a corresponding preset threshold value; judging that three channel signals of the corresponding channel type are all normal when the channel type is smaller than the threshold value, and outputting an intermediate signal value, otherwise, executing the next step; predicting the data of the current sampling period by using a Wiener filter, and calculating a predicted signal value of the current sampling period of the corresponding channel category; comparing differences between the predicted signal value and the maximum signal value, between the predicted signal value and the intermediate signal value and between the predicted signal value and the minimum signal value with a threshold value; and judging that the corresponding channel signal of the corresponding channel category is normal. According to the invention, the signal prediction value is introduced, the signal of each channel is compared with the signal prediction value to solve the difference, and then the difference is compared with the threshold value, so that the signal fault is accurately alarmed.

Description

technical field [0001] The invention relates to the technical field of civil aviation, in particular to an alarm voting method for an aircraft three-redundancy system. Background technique [0002] As the core system of the whole aircraft, the aircraft warning system monitors the operating parameters of other systems in real time. When the monitoring of other system parameters is abnormal, a warning message is issued to remind the driver of the fault location, and corresponding abnormal processing procedures are carried out to ensure that the aircraft can return to safe flight. state. [0003] In order to ensure the safety of modern aircraft, various systems are mostly designed with three degrees of redundancy. In the prior art, the fault alarm voting method of the aircraft three-redundancy system mostly adopts such as figure 1 The method shown is to collect the signal values ​​of the three channels corresponding to each channel category in the three-redundancy system of t...

Claims

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Application Information

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IPC IPC(8): G08B29/18G08B21/18
CPCG08B29/188G08B21/185
Inventor 张迪袁宵张伟业李舒梁占林
Owner 商飞软件有限公司