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Judgment method for judging BIT detection state of redundancy flight control system

A technology of flight control system and state detection, applied in the field of BIT detection state judgment of redundant flight control system, can solve problems such as unrealizable, achieve low complexity, improve reliability and testability, and achieve high reliability

Inactive Publication Date: 2018-03-09
XIAN FLIGHT SELF CONTROL INST OF AVIC
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  • Application Information

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Problems solved by technology

Traditional design methods cannot achieve this function

Method used

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  • Judgment method for judging BIT detection state of redundancy flight control system

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Embodiment Construction

[0016] Taking the three-redundancy flight control computer as an example, the specific implementation steps of the method are described in detail below:

[0017] The flight control system has multiple tests that can be performed simultaneously on three channels, as shown in Table 1:

[0018] Table 1

[0019] test index

Test item name

test status flag

0

Flight control computer replacement test

fcm_test_status

1

Servo system replacement test

ace_test_status

2

Aileron Replacement Test

ail_test_status

3

Elevator Replacement Test

elev_test_status

4

Rudder Replacement Test

rud_test_status

5

Multifunctional spoiler replacement test

mfs_test_status

。。。

。。。

[0020] Assume that the current test index is 3, and the test status is 100, indicating that the test is complete.

[0021] Step 1: Current test index 3 selects the test status elev_test_status of the rudder repla...

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Abstract

The invention belongs to the field of the BIT (in-machine self-detection) of a flight control system and provides a judgment method for judging the BIT detection state of a redundancy flight control system. According to the invention, the test state of the BIT state is monitored through a local channel flight control computer and the state is sent to other channels. The local channel flight control computer receives the test states of the BIT test sent by other channels. The local channel flight control computer respectively judges whether the test states of the local channel and other effective channels are well tested or not. If the test of one channel is completed, the output test state of the channel is set to be completed. Otherwise, the test state is set to be not completed. According to the invention, the current states of BIT test items simultaneously executed by the redundancy flight control system can be effectively reported. The method is low in complexity and high in reliability. The reliability and the testability of the system are greatly improved.

Description

technical field [0001] The invention belongs to BIT (In-Board Self-Testing) technology of a flight control system, and relates to a method for judging the BIT detection state of a redundant flight control system. Background technique [0002] In the traditional redundant flight control system, the BIT tests performed by multiple channels at the same time are independent of each other, and each channel only declares the execution status of its own channel, regardless of the execution status of BIT tests of other channels. However, with the continuous improvement of the detection requirements of the flight control system and Functions continue to expand, and some tests in the flight control system need to be executed in each channel at the same time, and when a channel is completed, all channels report that the test is completed. Traditional design methods cannot achieve this function. Contents of the invention [0003] The purpose of the present invention is to propose a m...

Claims

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Application Information

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IPC IPC(8): G05B19/048G05B23/02
CPCG05B19/048G05B23/0213
Inventor 冉鹏苏春宇姜敏田贝徐向前张丹涛董强
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC