CN110608707A - Online testing system and method for attack angle sensor - Google Patents
Online testing system and method for attack angle sensor Download PDFInfo
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- CN110608707A CN110608707A CN201911045420.0A CN201911045420A CN110608707A CN 110608707 A CN110608707 A CN 110608707A CN 201911045420 A CN201911045420 A CN 201911045420A CN 110608707 A CN110608707 A CN 110608707A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
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- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention discloses an on-line testing system and method of an attack angle sensor, which are used for testing the attack angle sensor comprising a first RVDT electrical node and a second RVDT electrical node, and are characterized in that: the system comprises a first excitation source, a second excitation source, a first electric signal acquisition module, a second electric signal acquisition module, a memory module and a signal processing module respectively connected with the modules. The testing system and the testing method can test the functions of the attack angle sensor on the ground or under the condition of not being crosslinked with other airborne equipment, increase the testing means before installation, reduce the fault rate of the installed equipment, and have the advantages of simple operation, wide adaptability, low cost and convenient realization.
Description
Technical Field
The invention relates to the technical field of testing of airborne equipment, in particular to an on-line testing system and method for an attack angle sensor.
Background
When the existing turboprop attack angle sensor is installed and then is subjected to a cross-linking test with an avionic system, the direct reading of the attack angle reading in a main flight display or the recording of data by a flight parameter recorder is adopted.
This method has the following disadvantages:
1. a certain type of attack angle sensor is installed on a side wall plate of an aircraft nose through a support, the support is installed in a line drawing hole forming mode from a part of a vehicle, and installation accuracy is difficult to guarantee that an error of the attack angle sensor is within a range of +/-1 degrees.
2. The attack angle sensor has the functions of measuring and heating the attack angle of the airplane, and is easy to overheat and damage in the stage of testing the heating power because necessary heat dissipation measures are lacked in the stage of installing and debugging on the ground.
Disclosure of Invention
Based on the defects of the prior art, the invention provides an on-line testing system and method for an attack angle sensor, which are used for the ground testing before installation and the debugging and checking work after installation of the attack angle sensor, and aims to strengthen the ground testing means of airborne equipment and reduce the loss in the debugging process.
The technical scheme of the invention is as follows:
an angle of attack sensor on-line testing system for testing an angle of attack sensor comprising a first RVDT electrical node and a second RVDT electrical node, characterized by: the device comprises a first excitation source, a second excitation source, a first electric signal acquisition module, a second electric signal acquisition module, a memory module and a signal processing module respectively connected with the modules;
the first excitation source is connected with a power supply end of the first RVDT electrical node and used for providing excitation power for the first RVDT electrical node of the attack angle sensor;
the second excitation source is connected with a power supply end of a second RVDT electrical node and used for providing an excitation power supply for the second RVDT electrical node of the attack angle sensor;
the first electrical signal acquisition module is connected with an electrical signal output end of the first RVDT electrical node and used for acquiring the output condition of the voltage and/or current signal of the first RVDT electrical node and transmitting the signal to the signal processing module;
the second electrical signal acquisition module is connected with the electrical signal output end of the second RVDT electrical node and used for acquiring the output condition of the voltage and/or current signal of the second RVDT electrical node and transmitting the signal to the signal processing module;
the signal processing module is at least used for converting and outputting corresponding wind vane angle information through the acquired electric signal, comparing the wind vane angle information with the adjusted angle of the wind vane of the attack angle sensor, judging the consistency of the wind vane angle information and acquiring the output range of the attack angle sensor;
and the signal processor is also used for calculating the linearity of the attack angle sensor according to the obtained electric signals corresponding to the vane at different positions.
Furthermore, the online test system for the attack angle sensor further comprises a first alternating current power supply, a second alternating current power supply, a first current signal acquisition module and a second current signal acquisition module, wherein the first alternating current power supply is connected with an input port of a vane heater power supply of the attack angle sensor;
the second alternating current power supply is connected with an input port of a shell heater power supply of the attack angle sensor;
the first current signal acquisition module is used for acquiring the current of the first alternating current power supply and transmitting the current information to the signal processing module;
the second current signal acquisition module is used for acquiring the current of a second alternating current power supply and transmitting the current information to the signal processing module;
and the signal processing module is also used for obtaining the power value of the attack angle sensor according to the acquired current value and the acquired voltage value.
Further, the excitation source specification provided by the first excitation source is 7V and 1800 Hz.
Further, the excitation source specification provided by the second excitation source is 7V and 1800 Hz.
Further, the first excitation source and the second excitation source are provided by the same excitation source.
Further, the first alternating current power supply specification is 115V, 400Hz alternating current.
Further, the second alternating current power supply specification is 115V, 400Hz alternating current.
A test method of an on-line test system of an attack angle sensor comprises a method for testing the wind vane rotating angle range and the full range of the attack angle sensor, wherein the method for testing the wind vane rotating angle range of the attack angle sensor comprises the following steps:
a1, energizing a supply terminal of the first RVDT electrical node and a supply terminal of the second RVDT electrical node;
a2, adjusting the weathervanes of the attack angle sensor, acquiring output signals of a first RVDT electrical node of the attack angle sensor by a first electrical signal acquisition module to send to a processor, acquiring output signals of a second RVDT electrical node of the attack angle sensor by a second electrical signal acquisition module to send to the processor, outputting a corresponding weathervane angle after processing by the processor, judging whether the input and the output of the weathervanes of the attack angle sensor are consistent, if the output is consistent, executing a3, and if the output is inconsistent, judging a fault;
and a3, adjusting the wind vane of the attack angle sensor again, acquiring the electric zero positions of the first RVDT electric node and the second RVDT electric node of the sensor, saving the electric zero positions, adjusting the wind vane of the attack angle sensor again, and acquiring the electric values of the first RVDT electric node and the second RVDT electric node corresponding to the wind vane rotation angle range of minus 50 degrees +/-2 degrees to 50 degrees +/-2 degrees.
The testing method of the on-line testing system of the attack angle sensor also comprises a testing method of the output linearity of the attack angle sensor, and the testing method of the output linearity of the attack angle sensor comprises the following steps:
b1, adjusting the wind vane of the attack angle sensor at regular intervals, and respectively acquiring the voltage or current values of the first RVDT electrical node and the second RVDT electrical node of the corresponding angle adjustment;
b2, calculating the linearity of the working range of the attack angle sensor by using a least square method.
The testing method of the on-line testing system of the attack angle sensor also comprises a method for testing the heating function of the attack angle sensor, and the method comprises the following steps: and respectively supplying power to an input port of a vane heater power supply of the attack angle sensor and an input port of a shell heater power supply of the attack angle sensor to obtain power supply current, and calculating heating power through the power supply P ═ UI.
The invention has the beneficial effects that: the testing system and the testing method can test the functions of the attack angle sensor on the ground or under the condition of not being crosslinked with other airborne equipment, increase the testing means before installation, reduce the fault rate of the installed equipment, and have the advantages of simple operation, wide adaptability, low cost and convenient realization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features of the following embodiments and examples may be combined with each other without conflict.
An online test system for an attack angle sensor is used for testing the attack angle sensor comprising a first RVDT electrical node and a second RVDT electrical node, for example, the attack angle sensor with the model of GJ-20 type sensor, and comprises a first excitation source, a second excitation source, a first alternating current power supply, a second alternating current power supply, a first electric signal acquisition module, a second electric signal acquisition module, a first current signal acquisition module, a second current signal acquisition module, a memory module and a signal processing module respectively connected with the modules;
wherein the first excitation source is connected with a power supply end of the first RVDT electrical node and used for providing excitation power for the first RVDT electrical node of the attack angle sensor; the second excitation source is connected with a power supply end of a second RVDT electrical node and used for providing an excitation power supply for the second RVDT electrical node of the attack angle sensor, in this embodiment, the excitation source specification provided by the first excitation source is 7V and 1800Hz, and the excitation source specification provided by the second excitation source is 7V and 1800 Hz. The first excitation source and the second excitation source are provided by the same excitation source, or by different excitation sources.
The first electrical signal acquisition module is connected with an electrical signal output end of the first RVDT electrical node and used for acquiring the output condition of the voltage and/or current signal of the first RVDT electrical node and transmitting the signal to the signal processing module; the second electrical signal acquisition module is connected with the electrical signal output end of the second RVDT electrical node, and is used for acquiring the output condition of the voltage and/or current signal of the second RVDT electrical node and transmitting the signal to the signal processing module, wherein the first electrical signal acquisition module and the second electrical signal acquisition module of the embodiment acquire voltage signals; the first alternating current power supply is connected with an input port of a vane heater power supply of the attack angle sensor; the second alternating current power supply is connected with an input port of a shell heater power supply of the attack angle sensor, the first alternating current power supply is 115V and 400Hz alternating current, and the second alternating current power supply is 115V and 400Hz alternating current.
The first current signal acquisition module is used for acquiring the current of the first alternating current power supply and transmitting the current information to the signal processing module; the second current signal acquisition module is used for acquiring the current of a second alternating current power supply and transmitting the current information to the signal processing module, and the first current signal acquisition module and the second current signal acquisition module can be realized by adopting a current sensor and an intelligent ammeter; the signal processing module is at least used for converting and outputting corresponding wind vane angle information through the acquired electric signal, comparing the wind vane angle information with the adjusted angle of the wind vane of the attack angle sensor, judging the consistency of the wind vane angle information and acquiring the output range of the attack angle sensor; and the signal processor is also used for calculating the linearity of the attack angle sensor according to the obtained electric signals corresponding to the vane at different positions.
The method for testing the attack angle sensor by using the online test system for the attack angle sensor comprises a method for testing the weathercock rotating angle range and the full scale of the attack angle sensor, a method for testing the output linearity of the attack angle sensor on the method, and a method for testing the heating function of the attack angle sensor, wherein in the three methods, a wiring diagram of the attack angle sensor is shown in figure 1, a connection diagram with a signal processor part is omitted in figure 1, a first excitation source and a second excitation source (not shown in the figure) are respectively connected with A, B points and H, L points of the attack angle sensor, and the specifications of the excitation sources are 7V and 1800 Hz. The first group C, P, D and the second group F, S, G of the extraction output signals of the attack angle sensor are correspondingly connected with a first electric signal acquisition module and a second electric signal acquisition module (not shown in the figure) of the test system respectively, the first group C, P, D corresponds to the output end of the first RVDT electrical node 1, and the second group F, S, G corresponds to the output end of the second RVDT electrical node 1.
The method for testing the vane rotating angle range of the attack angle sensor comprises the following steps:
a1, energizing a supply terminal of the first RVDT electrical node and a supply terminal of the second RVDT electrical node;
a2, adjusting the weathervanes of the attack angle sensor, acquiring output signals of a first RVDT electrical node of the attack angle sensor by a first electrical signal acquisition module to send to a processor, acquiring output signals of a second RVDT electrical node of the attack angle sensor by a second electrical signal acquisition module to send to the processor, outputting a corresponding weathervane angle after processing by the processor, judging whether the input and the output of the weathervanes of the attack angle sensor are consistent, if the output is consistent, executing a3, and if the output is inconsistent, judging a fault;
a3, adjusting the wind vane of the attack angle sensor again, obtaining the electric zero positions of the first RVDT electric node and the second RVDT electric node of the sensor, saving the electric zero positions, adjusting the wind vane of the attack angle sensor again, obtaining the electric values of the first RVDT electric node and the second RVDT electric node corresponding to the wind vane rotation angle range of minus 50 degrees +/-2 degrees to 50 degrees +/-2 degrees, and the full-scale output voltage of the normal attack angle sensor is 6 +/-0.06 VA when the normal attack angle sensor is minus 50 degrees +/-2 degrees to 50 degrees +/-2 degrees.
The method for testing the angle of attack sensor by using the online testing system for the angle of attack sensor also comprises a testing method for the output linearity of the angle of attack sensor, and the testing method for the output linearity of the angle of attack sensor comprises the following steps:
b1, adjusting the attack angle sensor vane from 0 degree to-45 degree and 0 degree to 45 degree every 3 degrees, respectively obtaining the voltage or current value of a first RVDT electrical node at C, P, D point and a second RVDT electrical node at F, S, G point of the corresponding adjustment angle;
b2, calculating the linearity of the working range of the attack angle sensor by using a least square method, wherein the linearity in the working range of the attack angle sensor is preferably not more than 0.5% FS.
The testing method of the on-line testing system of the attack angle sensor further comprises a method for testing the heating function of the attack angle sensor, specifically, a first alternating current power supply is connected with a point K, the point K is a power supply end of a vane heater, a second alternating current power supply is connected with a point M of the attack angle sensor, the point M is a power supply of a shell heater, the point L is a grounding point of a heating circuit, the specifications of the first alternating current power supply and the second alternating current power supply are both 115V and 400Hz alternating current, after heating is carried out for 5 minutes, the current values of the two alternating current power supplies are obtained by the first current signal acquisition module and the second current signal acquisition module, the total current of the heating circuit is obtained by adding, the heating power is calculated according to the P ═ UI, and the heating power.
The above embodiments are merely representative of the centralized embodiments of the present invention, and the description thereof is specific and detailed, but it should not be understood as the limitation of the scope of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the spirit of the present invention, and these changes and modifications all fall into the protection scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. An angle of attack sensor on-line testing system for testing an angle of attack sensor comprising a first RVDT electrical node and a second RVDT electrical node, characterized by: the device comprises a first excitation source, a second excitation source, a first electric signal acquisition module, a second electric signal acquisition module, a memory module and a signal processing module respectively connected with the modules;
the first excitation source is connected with a power supply end of the first RVDT electrical node and used for providing excitation power for the first RVDT electrical node of the attack angle sensor;
the second excitation source is connected with a power supply end of a second RVDT electrical node and used for providing an excitation power supply for the second RVDT electrical node of the attack angle sensor;
the first electrical signal acquisition module is connected with an electrical signal output end of the first RVDT electrical node and used for acquiring the output condition of the voltage and/or current signal of the first RVDT electrical node and transmitting the signal to the signal processing module;
the second electrical signal acquisition module is connected with the electrical signal output end of the second RVDT electrical node and used for acquiring the output condition of the voltage and/or current signal of the second RVDT electrical node and transmitting the signal to the signal processing module;
the signal processing module is at least used for converting and outputting corresponding wind vane angle information through the acquired electric signal, comparing the wind vane angle information with the adjusted angle of the wind vane of the attack angle sensor, judging the consistency of the wind vane angle information and acquiring the output range of the attack angle sensor;
and the signal processor is also used for calculating the linearity of the attack angle sensor according to the obtained electric signals corresponding to the vane at different positions.
2. The angle of attack sensor on-line test system of claim 1, wherein: the on-line test system of the attack angle sensor also comprises a first alternating current power supply, a second alternating current power supply, a first current signal acquisition module and a second current signal acquisition module,
the first alternating current power supply is connected with an input port of a vane heater power supply of the attack angle sensor;
the second alternating current power supply is connected with an input port of a shell heater power supply of the attack angle sensor;
the first current signal acquisition module is used for acquiring the current of the first alternating current power supply and transmitting the current information to the signal processing module;
the second current signal acquisition module is used for acquiring the current of a second alternating current power supply and transmitting the current information to the signal processing module;
and the signal processing module is also used for obtaining the power value of the attack angle sensor according to the acquired current value and the acquired voltage value.
3. The angle of attack sensor on-line test system of claim 1, wherein: the excitation source specification provided by the first excitation source is 7V and 1800 Hz.
4. The angle of attack sensor on-line test system of claim 1, wherein: the excitation source specification provided by the second excitation source is 7V and 1800 Hz.
5. The angle of attack sensor on-line test system of claim 1, wherein: the first excitation source and the second excitation source are provided by the same excitation source.
6. The angle of attack sensor on-line test system of claim 1, wherein: the first alternating current power supply specification is 115V, 400Hz alternating current.
7. The angle of attack sensor on-line test system of claim 1, wherein: the second alternating current power supply specification is 115V, 400Hz alternating current.
8. The method for testing the on-line testing system of the angle of attack sensor of claims 1-7, comprising a method for testing the weathervane angle range and the full scale of the angle of attack sensor, wherein the method for testing the weathervane angle range of the angle of attack sensor comprises the steps of:
a1, energizing a supply terminal of the first RVDT electrical node and a supply terminal of the second RVDT electrical node;
a2, adjusting the weathervanes of the attack angle sensor, acquiring output signals of a first RVDT electrical node of the attack angle sensor by a first electrical signal acquisition module to send to a processor, acquiring output signals of a second RVDT electrical node of the attack angle sensor by a second electrical signal acquisition module to send to the processor, outputting a corresponding weathervane angle after processing by the processor, judging whether the input and the output of the weathervanes of the attack angle sensor are consistent, if the output is consistent, executing a3, and if the output is inconsistent, judging a fault;
and a3, adjusting the wind vane of the attack angle sensor again, acquiring the electric zero positions of the first RVDT electric node and the second RVDT electric node of the sensor, saving the electric zero positions, adjusting the wind vane of the attack angle sensor again, and acquiring the electric values of the first RVDT electric node and the second RVDT electric node corresponding to the wind vane rotation angle range of minus 50 degrees +/-2 degrees to 50 degrees +/-2 degrees.
9. The method for testing the on-line testing system of the angle of attack sensor of claim 8, further comprising a method for testing the output linearity of the angle of attack sensor, the method for testing the output linearity of the angle of attack sensor comprising the steps of:
b1, adjusting the wind vane of the attack angle sensor at regular intervals, and respectively acquiring the voltage or current values of the first RVDT electrical node and the second RVDT electrical node of the corresponding angle adjustment;
b2, calculating the linearity of the working range of the attack angle sensor by using a least square method.
10. The method for testing an on-line testing system of an angle of attack sensor of claim 8, further comprising a method for testing a warming function of an angle of attack sensor, the method comprising: and respectively supplying power to an input port of a vane heater power supply of the attack angle sensor and an input port of a shell heater power supply of the attack angle sensor to obtain power supply current, and calculating heating power through the power supply P ═ UI.
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| CN201911045420.0A CN110608707A (en) | 2019-10-30 | 2019-10-30 | Online testing system and method for attack angle sensor |
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| CN201911045420.0A CN110608707A (en) | 2019-10-30 | 2019-10-30 | Online testing system and method for attack angle sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114113684A (en) * | 2021-11-08 | 2022-03-01 | 陕西飞机工业有限责任公司 | Method and device for adjusting angle position output of attack angle sensor |
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