CN107817006A - A kind of angle of attack sensor self-sensing method - Google Patents
A kind of angle of attack sensor self-sensing method Download PDFInfo
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- CN107817006A CN107817006A CN201711243689.0A CN201711243689A CN107817006A CN 107817006 A CN107817006 A CN 107817006A CN 201711243689 A CN201711243689 A CN 201711243689A CN 107817006 A CN107817006 A CN 107817006A
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- 238000000034 method Methods 0.000 title claims abstract 8
- 238000001514 detection method Methods 0.000 claims abstract 9
- 230000005284 excitation Effects 0.000 claims 7
- 230000004888 barrier function Effects 0.000 claims 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a kind of angle of attack sensor self-sensing method, belong to sensor detecting field.Including：Step 1: whether the acquisition interface of detection controller is normal；If normal, step 2 is carried out；Otherwise, then acquisition interface failure is recorded；Step 2: whether detection sensor output signal is normal with value；If normal, step 3 is carried out；Otherwise, then pair recorded with value failure；Step 3: whether detection sensor is in extreme position output signal and and be worth normal；If normal, step 4 is carried out；No survey, then recorded to sensor output signal failure and with value failure；Step 4: whether detection angle of attack sensor weathercock there is stuck failure；Step 5: fault comprehensive is carried out to angle of attack sensor Autonomous test result；The present invention improves the fault location accuracy of this self-sensing method；Using and value judge with both sides tilt limit position when sensor outgoing position determination methods, improve angle of attack sensor failure checking cover ratio.
Description
Technical field
The invention belongs to sensor detecting field, and in particular to a kind of angle of attack sensor self-sensing method.
Background technology
Angle of attack sensor has highly important effect to the flight safety of aircraft, the normal operation of flight control system from
The normal work of angle of attack sensor is not opened.Some angle of attack sensor weathercocks do not possess long distance deflection, due to using preceding wind direction
Change cause sensor output signal to be a random value, therefore using can not be to its output signal before this angle of attack sensor
Correctness judged；Only to same mechanical remaining during some angle of attack sensor Autonomous tests.The failure pair of angle of attack sensor
The flight safety of aircraft can produce more serious influence.
Therefore, should comprehensively be detected to angle of attack sensor output signal before use, the inspection of angle of attack sensor is improved
Look into coverage rate.
The content of the invention
The purpose of the present invention：In order to solve the above problems, the present invention proposes a kind of angle of attack sensor self-sensing method, solution
Determine the Autonomous test problem of the angle of attack sensor with long distance deflection, improved angle of attack sensor Autonomous test coverage rate.
Technical scheme：A kind of angle of attack sensor self-sensing method, comprises the following steps：
Step 1: whether the acquisition interface of detection controller is normal；
Carry out positive definite value excitation and the excitation of reverse definite value respectively to the acquisition interface of controller by excitation wires, check
Whether acquisition interface is normal；
If normal, step 2 is carried out；
Otherwise, then acquisition interface failure is recorded；
Step 2: whether detection sensor output signal is normal with value；
Collection sensor exports high-end centering and takes out terminal voltage UH-CTAnd terminal voltage U is taken out in sensor output low side centeringL-CT, two
Person be added and threshold voltage USUM, by judging USUMJudge whether sensor output is normal；
If normal, step 3 is carried out；
Otherwise, then discovery is recorded with value failure；
Step 3: whether detection sensor is in extreme position output signal and and be worth normal；
Realize that weathercock forwards/reverse deflects by long distance deflection, after deflecting into extreme position, collection sensor output
Whether signal is normal；
If normal, step 4 is carried out；
No survey, then the sensor output signal failure to discovery and and value failure record；
Step 4: whether detection angle of attack sensor weathercock there is stuck failure；
Controller control angle of attack sensor carries out the positive deflection of short time or reversely deflection, sensor weathercock is not stopped
The extreme position of both sides is stayed in, whether controller gathers angle of attack sensor output signal also in extreme position；
If showing the stuck failure of angle of attack sensor weathercock occur in the extreme position,
Show angle of attack sensor weathercock normal work if the extreme position is not at；
Step 5: fault comprehensive is carried out to angle of attack sensor Autonomous test result；
Acquisition interface fault comprehensive is controller failure, and the fault comprehensive occurred in remaining detection process is angle of attack sensor
Failure.
Preferably, the controller in the step 1 is provided with for carrying out positive definite value excitation or the excitation of reverse energization
Circuit；
The excitation wires are connected by the analogue collection module of acquisition interface and controller.
Preferably, the acquisition interface is provided with relay；
Switching between excitation wires and external sensor signal output circuit is completed by the relay.
Technical solution of the present invention advantageous effects：A kind of angle of attack sensor self-sensing method of the present invention solves purely mechanic
Formula uses preceding Autonomous test problem without long distance deflection weather vane type angle of attack sensor, before angle of attack sensor output signal is detected,
Detect controller acquisition interface in itself whether normal work, improve the fault location accuracy of this self-sensing method；Using with
Value judgement and sensor outgoing position determination methods during the tilt limit position of both sides, improve angle of attack sensor fault detect covering
Rate.
Brief description of the drawings
Fig. 1 is that the controller of a preferred embodiment of angle of attack self-sensing method of the present invention shows with angle of attack sensor annexation
It is intended to；
Fig. 2 is the detection method schematic flow sheet of a preferred embodiment of angle of attack self-sensing method of the present invention.
Embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
Part of the embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Embodiments of the invention are described in detail with reference to accompanying drawing for face.
As shown in Figure 1 to Figure 2：The present invention proposes a kind of angle of attack sensor self-sensing method, comprises the following steps：
Step a, whether normal acquisition interface is detected：
Controller will switch and 1. push excitation wires position；
Controller will switch and 2. push " forward direction " position, output positive incentive signal is carried out constant value to acquisition interface and swashs
Encourage；
Collection value is checked after Acquisition Circuit whether in the range of desired excitation constant value, if not in threshold range
Failure is recorded and declares acquisition interface failure, thinks that acquisition interface is normal if in threshold range；
Controller will switch and 2. push " reverse " position, output reverse energization signal is carried out constant value to acquisition interface and swashs
Encourage；
Collection value is checked after Acquisition Circuit whether in the range of desired excitation constant value, if not in threshold range
Failure is recorded and declares acquisition interface failure, thinks that acquisition interface is normal if in threshold range；
1. Fig. 1 switches are returned into sensor output signal collection position.
Step b, detection sensor output signal and value it is whether normal：
The H ends of sensor output signal are gathered to CT terminal voltages UH-CT；
The L ends of sensor output signal are gathered to CT terminal voltages UL-CT,
By UH-CTWith UL-CTBe added and threshold voltage USUM, check USUMWhether in desired and value threshold range, if do not existed
Then failure is recorded in threshold range and declares sensor and value failure, angle of attack sensor is thought if in threshold range
It is normal with value.
Step c, whether detection sensor output signal in certain side pole extreme position is normal：
Controller control angle of attack sensor weathercock carries out positive long distance and deflects into extreme position；
Controller gathers angle of attack sensor output signal and its with value whether in desired extreme position threshold range, such as
Then failure is recorded not in threshold range and declares sensor signal failure, thinks that the angle of attack passes if in threshold range
Sensor signal is normal；
Controller control angle of attack sensor weathercock carries out reverse long distance and deflects into extreme position；
Controller gathers angle of attack sensor output signal and its with value whether in desired extreme position threshold range, such as
Then failure is recorded not in threshold range and declares sensor signal failure, thinks that the angle of attack passes if in threshold range
Sensor signal is normal.
To prevent that it is stuck in extreme position fault mode, after above-mentioned detecting step is completed, controller control that weathercock from occurring
Angle of attack sensor carries out the positive deflection of short time, sensor weathercock is not rested on the extreme position of both sides.
Whether controller gathers angle of attack sensor output signal also in reverse limit position, if being in the extreme position table
It is bright the stuck failure of angle of attack sensor weathercock occur, show angle of attack sensor weathercock normal work if the extreme position is not at.
Step d, fault comprehensive is carried out to angle of attack sensor Autonomous test result：
The fault comprehensive occurred in step a detection process is controller acquisition interface failure；
Step b, the fault comprehensive occurred in c detection process is angle of attack sensor failure.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
The present invention is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the essence of various embodiments of the present invention technical scheme
God and scope.
Claims (3)
- A kind of 1. angle of attack sensor self-sensing method, it is characterised in that：Comprise the following steps：Step 1: whether the acquisition interface of detection controller is normal；Carry out positive definite value excitation and the excitation of reverse definite value respectively to the acquisition interface of controller by excitation wires, check collection Whether interface is normal；If normal, step 2 is carried out；Otherwise, then acquisition interface failure is recorded；Step 2: whether detection sensor output signal is normal with value；Collection sensor exports high-end centering and takes out terminal voltage UH-CTAnd terminal voltage U is taken out in sensor output low side centeringL-CT, the two phase Add and threshold voltage USUM, by judging USUMJudge whether sensor output is normal；If normal, step 3 is carried out；Otherwise, then discovery is recorded with value failure；Step 3: whether detection sensor is in extreme position output signal and and be worth normal；Realize that weathercock forwards/reverse deflects by long distance deflection, after deflecting into extreme position, gather sensor output signal It is whether normal；If normal, step 4 is carried out；No survey, then the sensor output signal failure to discovery and and value failure record；Step 4: whether detection angle of attack sensor weathercock there is stuck failure；Controller control angle of attack sensor carries out the positive deflection of short time or reversely deflection, sensor weathercock is not rested on Whether the extreme position of both sides, controller gather angle of attack sensor output signal also in extreme position；If showing the stuck failure of angle of attack sensor weathercock occur in the extreme position,Show angle of attack sensor weathercock normal work if the extreme position is not at；Step 5: fault comprehensive is carried out to angle of attack sensor Autonomous test result；Acquisition interface fault comprehensive is controller failure, and the fault comprehensive occurred in remaining detection process is angle of attack sensor event Barrier.
- 2. angle of attack sensor self-sensing method according to claim 1, it is characterised in that：Controller in the step 1 It is provided with the excitation wires for carrying out positive definite value excitation or reverse energization；The excitation wires are connected by the analogue collection module of acquisition interface and controller.
- 3. angle of attack sensor self-sensing method according to claim 2, it is characterised in that：The acquisition interface be provided with after Electrical equipment；Switching between excitation wires and external sensor signal output circuit is completed by the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243689.0A CN107817006B (en) | 2017-11-30 | 2017-11-30 | Self-detection method of attack angle sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243689.0A CN107817006B (en) | 2017-11-30 | 2017-11-30 | Self-detection method of attack angle sensor |
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| CN107817006A true CN107817006A (en) | 2018-03-20 |
| CN107817006B CN107817006B (en) | 2021-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115038974A (en) * | 2020-01-30 | 2022-09-09 | 泰雷兹公司 | Self-test method for an angle of attack probe, method for checking the air flow rate provided by a group of associated pitot tube probes, angle of attack probe |
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| CN115038974A (en) * | 2020-01-30 | 2022-09-09 | 泰雷兹公司 | Self-test method for an angle of attack probe, method for checking the air flow rate provided by a group of associated pitot tube probes, angle of attack probe |
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| CN107817006B (en) | 2021-01-08 |
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