CN205748924U - Aero-engine LVDT signal hardware is at loop test device - Google Patents
Aero-engine LVDT signal hardware is at loop test device Download PDFInfo
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- CN205748924U CN205748924U CN201620679457.4U CN201620679457U CN205748924U CN 205748924 U CN205748924 U CN 205748924U CN 201620679457 U CN201620679457 U CN 201620679457U CN 205748924 U CN205748924 U CN 205748924U
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Abstract
This utility model provides a kind of aero-engine LVDT signal hardware at loop test device, including: electronic controller；Real-time simulation module, for simulating engine activation part with export activation part LVDT relative shift；Voltage acquisition module, is used for this aero-engine LVDT signal hardware running voltage at loop test device for gathering the pumping signal from this electronic controller with offer；A phase amplitude transformation module, for based on from this real-time simulation module LVDT relative shift to this running voltage perform A phase amplitude transformation, with export A phase LVDT feedback signal to this electronic controller A channel for this electronic controller perform electromotor control emulation；And B phase amplitude transformation module, for based on from this real-time simulation module LVDT relative shift to this running voltage perform B phase amplitude transformation, with export B phase LVDT feedback signal to this electronic controller channel B for this electronic controller perform electromotor control emulation.
Description
Technical field
This utility model relates to the assay device of aeroengine control system, particularly relates to aero-engine LVDT signal
Hardware is at loop test device.
Background technology
Aero-engine hardware with system hardware and software demand for test input, carries out what present stage can do at loop test
Simulating, verifying, verifies the accordance that systemic-function performance is required by current system hardware and software development work, with find as early as possible and gram
Take design defect, reduce semi physical and the accident risk of bench test drive.For this reason, it may be necessary to simulation includes LVDT (Linear
Variable Differential Transform, linear adjustable differential transformer) signal is in interior various sensors and execution
Mechanism carries out Hardware-in-the-loop simu-lation.
Aero-engine LVDT signal hardware is at the device of loop test, for completing this challenging verification experimental verification
Work provides convenient a, test platform effectively.Traditional LVDT signal imitation test platform, credible owing to there is simulation
Spend the highest, and the error of various sampling, signal imitation limited precision, and fault-free injection module, as shown in Figure 1.
Acting as the signal processing in sine-wave excitation source 105 of signal condition unit 104 is square-wave signal, signal condition
The direct current signal of D/A output module 101 is modulated by the acting as of unit 102 with square-wave signal, signal condition unit 103
It act as the impedance matching of output and input signal, be simultaneously connected with navigational computer detection port.
The output of the program only has a road voltage signal, and is output as square-wave signal, simulates LVDT the most really and passes
The structure of sensor and characteristic.
Additionally the program uses and uses high-speed a/d sampling pumping signal, then carries out computing demodulation, through phase compensation etc.
After computing, use high-speed a/d converter to construct response signal, simulate LVDT function.The method is to device speed and algorithm
Requiring relatively, to add software difficulty, dynamic property is the best, and unrelated with driving frequency, and subject range is little, it is impossible to ensure input
Phase shift between carrier signal and outgoing carrier signal.
Additionally, the program does not possess direct fault location function, sufficiently complete on functional realiey.
Utility model content
In order to overcome drawbacks described above, this utility model aims to provide a kind of aero-engine LVDT signal hardware and tries in loop
Experiment device.
According to one side of the present utility model, it is provided that a kind of aero-engine LVDT signal hardware fills at loop test
Put, including:
Electronic controller, is used for performing electromotor control；
Real-time simulation module, for simulating engine activation part with export activation part LVDT relative shift；
Voltage acquisition module, is coupled to this electronic controller, for gather from this electronic controller pumping signal with
The running voltage being used for this aero-engine LVDT signal hardware at loop test device is provided；
A phase amplitude transformation module, is coupled to this real-time simulation module and this voltage acquisition module, for based on real from this
Time emulation module LVDT relative shift to this running voltage perform A phase amplitude transformation, to export A phase LVDT feedback signal extremely
The A channel of this electronic controller performs electromotor for this electronic controller and controls emulation；And
B phase amplitude transformation module, is coupled to this real-time simulation module and this voltage acquisition module, for based on real from this
Time emulation module LVDT relative shift to this running voltage perform B phase amplitude transformation, to export B phase LVDT feedback signal extremely
The channel B of this electronic controller performs electromotor for this electronic controller and controls emulation.
In one example, the voltage magnitude Va=V of this A phase LVDT feedback signalWork* (0.5+0.5P), this B phase LVDT is anti-
The voltage magnitude Vb=V of feedback signalWork* (0.5-0.5P), wherein VWorkFor this running voltage, P is this LVDT relative shift ,-1
≤P≤1。
In one example, the amplitude of this pumping signal is 3 ± 0.5V, and driving frequency is 3000 ± 500Hz.
In one example, this device also includes: direct fault location module, is coupled to this A phase amplitude transformation module and this electronics
Between controller and be coupled between this B phase amplitude transformation module and this electronic controller, for optionally to this A phase
LVDT feedback signal and this B phase LVDT feedback signal perform direct fault location.
In one example, this direct fault location module couples to this real-time simulation module with in response to from this real-time simulation mould
The direct fault location control signal of block performs direct fault location or does not perform direct fault location.
In one example, in the case of performing direct fault location, this direct fault location module is additionally in response to the control of this direct fault location
Signal behavior direct fault location pattern.
In one example, direct fault location pattern include following one or more: short circuit, open circuit, to power supply short circuit, the shortest
Road, open a way continuously, swinging short.
In one example, this device also includes: A phase analog isolation module, is coupled to this voltage acquisition module and this A phase width
Between value conversion module, for passing to this A phase amplitude transformation module through the running voltage of isolation；And B phase simulate every
From module, it is coupled between this voltage acquisition module and this B phase amplitude transformation module, passes for by the running voltage through isolation
Pass this B phase amplitude transformation module.
According to scheme of the present utility model, by using the mode such as analog isolation, amplitude transformation to simulate LVDT really
The electrical characteristic of sensor signal, and ensure that safety and the reliability of LVDT analog.Additionally possesses direct fault location
Function, can directly pass through software pouring fault message.By this device, at access control system fuel control system LVDT signal
Reason software operation in real hardware, real time operating system, and the issuable fault of hardware and operating system software；And
And according to the requirement of CCAR33.28 clause, to the function of the LVDT signal processing of civil engine fuel control system and
Performance is fully verified, to ensure under all of working condition at intended operation.
Accompanying drawing explanation
After reading the detailed description that embodiment of the disclosure in conjunction with the following drawings, more better understood when this practicality
Novel features described above and advantage.
Fig. 1 shows the simplified diagram of tradition aero-engine LVDT signal imitation test platform；
Fig. 2 shows the aero-engine LVDT signal hardware according to an embodiment of the present utility model at loop test
The block diagram of device；And
The aero-engine LVDT signal hardware that Fig. 3 shows according to another embodiment of the present utility model is tried in loop
The block diagram of experiment device.
For clarity sake, the brief description of reference given below:
101:D/A output module
102,103,104: signal condition unit
105: sine-wave excitation source
201,301: real-time simulation module
203A, 303A:A phase amplitude transformation module
203B, 303B:B phase amplitude transformation module
204,304: voltage acquisition module
205A, 305A:A phase analog isolation module
205B, 305B:B phase analog isolation module
206,306: electronic controller
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.Note, below in conjunction with accompanying drawing and tool
The aspects that body embodiment describes is only exemplary, and is understood not to carry out any to protection domain of the present utility model
Limit.
This utility model, for the deficiencies in the prior art, proposes a kind of aero-engine LVDT signal hardware at loop test
Device.For complicated LVDT electrical characteristic and fault simulation mode, can be by this experiment module, efficiently, the completeest
Become the checking test of LVDT signal.
Fig. 2 shows the aero-engine LVDT signal hardware according to an embodiment of the present utility model at loop test
The block diagram of device 200 (hereinafter referred to as device 200).As in figure 2 it is shown, this device 200 can include real-time simulation module 201, A phase width
Value conversion module 203A, B phase amplitude transformation module 203B, voltage acquisition module 204, A phase analog isolation module 205A, B phase mould
Intend isolation module 205B and electronic controller 206.
Real-time simulation module 201 can be by running electromotor or fuel control system partial model, with simulating engine
Activation part, calculates the LVDT signal of electromotor activation part, specifically LVDT relative shift P, wherein-1≤P≤
1.Real-time simulation module 201 can be High performance industrial computer, wherein runs real time operating system and supports industrial computer software.
Voltage acquisition module 204 is coupled to electronic controller 206 to gather the pumping signal from electronic controller 206.
Such as this pumping signal can be amplitude be 3 ± 0.5V, driving frequency is the sinusoidal signal of 3000 ± 500Hz.Voltage acquisition mould
This pumping signal is acquired with output for the running voltage of whole device by block 204, and stores in both the buffers using as A
Phase amplitude transformation module 203A and the input of B phase amplitude transformation module 203B.
In an embodiment as illustrated in figure 2, for the reliability of signal, in voltage acquisition module 204 and A phase amplitude transformation
A phase analog isolation module 205A it is provided with between module 203A, and in voltage acquisition module 204 and B phase amplitude transformation module 203B
Between be provided with B phase analog isolation module 205B, thus provide through isolation running voltage.Such as, by the isolation of isolating chip,
Make board and electronic controller avoid common ground thus burn the risk of board.
A phase amplitude transformation module 203A couple receive from real-time simulation module 201 LVDT relative shift and through every
From running voltage, and based on this LVDT relative shift to this running voltage perform A phase amplitude transformation, to export A phase LVDT
Feedback signal to the A channel of electronic controller 206 for the LVDT in electronic controller 206, the most such as electronic controller 206
Signal processing module, performs electromotor and controls emulation.
B phase amplitude transformation module 203B couple receive from real-time simulation module 201 LVDT relative shift and through every
From running voltage, and based on this LVDT relative shift to this running voltage perform B phase amplitude transformation, to export B phase LVDT
Feedback signal to the channel B of electronic controller 206 for the LVDT in electronic controller 206, the most such as electronic controller 206
Signal processing module, performs electromotor and controls emulation.Here, electronic controller 206 is that civil engine control system is hard
Part is in the subjects of loop test.Electronic controller 206 can complete the merits such as the control of aero-engine fuel oil, closed-loop simulation
Energy.
Specifically, the A phase amplitude transformation that A phase amplitude transformation module 203A performs can use A phase inversion amplitude formula Va=
VWork* (0.5+0.5P) represents, Va is the voltage magnitude of A phase LVDT feedback signal, VWorkFor running voltage, P is that LVDT is relative
Displacement ,-1≤P≤1.The B phase amplitude transformation that B phase amplitude transformation module 203B performs can use B phase inversion amplitude formula Vb=
VWork* (0.5-0.5P) represents, Vb is the voltage magnitude of B phase LVDT feedback signal.
Use amplitude transformation mode, i.e. use pumping signal to realize than the method being multiplied with conversion, amplification is changed
For analogue signal or the digital value of specific format, with pumping signal and this signal multiplication, its response signal can simulate LVDT
Secondary coil output, this method can obtain higher precision, and easily realize.Which thereby enhance LVDT signal imitation true
Degree and degree of accuracy, reduce the electrical characteristic of LVDT sensor really.
Fig. 3 shows the aero-engine LVDT signal hardware according to an embodiment of the present utility model at loop test
The block diagram of device 300 (hereinafter referred to as device 300).As it is shown on figure 3, this device 300 can include real-time simulation module 301, A phase width
Value conversion module 303A, B phase amplitude transformation module 303B, voltage acquisition module 304, A phase analog isolation module 305A, B phase mould
Intend isolation module 305B, electronic controller 306 and direct fault location module 307.
Real-time simulation module 301 can be by running electromotor or fuel control system partial model, with simulating engine
Activation part, calculates the LVDT signal of electromotor activation part, specifically LVDT relative shift P, wherein-1≤P≤
1.Real-time simulation module 301 can be High performance industrial computer, wherein runs real time operating system and supports industrial computer software.
Voltage acquisition module 304 is coupled to electronic controller 306 to gather the pumping signal from electronic controller 306.
Such as this pumping signal can be amplitude be 3 ± 0.5V, driving frequency is the sinusoidal signal of 3000 ± 500Hz.Voltage acquisition mould
This pumping signal is acquired with output for the running voltage of whole device by block 304, and stores in both the buffers using as A
Phase amplitude transformation module 303A and the input of B phase amplitude transformation module 303B.
In an embodiment as illustrated in figure 3, for the reliability of signal, in voltage acquisition module 304 and A phase amplitude transformation
A phase analog isolation module 305A it is provided with between module 303A, and in voltage acquisition module 304 and B phase amplitude transformation module 303B
Between be provided with B phase analog isolation module 305B, thus provide through isolation running voltage.Such as, by the isolation of isolating chip,
Make board and electronic controller avoid common ground thus burn the risk of board.
A phase amplitude transformation module 303A couple receive from real-time simulation module 201 LVDT relative shift and through every
From running voltage, and based on this LVDT relative shift to this running voltage perform A phase amplitude transformation, to export A phase LVDT
Feedback signal to the A channel of electronic controller 306 for the LVDT in electronic controller 306, the most such as electronic controller 306
Signal processing module, performs electromotor and controls emulation.
B phase amplitude transformation module 303B couple receive from real-time simulation module 201 LVDT relative shift and through every
From running voltage, and based on this LVDT relative shift to this running voltage perform B phase amplitude transformation, to export B phase LVDT
Feedback signal to the channel B of electronic controller 306 for the LVDT in electronic controller 306, the most such as electronic controller 306
Signal processing module, performs electromotor and controls emulation.Here, electronic controller 306 is that civil engine control system is hard
Part is in the subjects of loop test.Electronic controller 306 can complete the merits such as the control of aero-engine fuel oil, closed-loop simulation
Energy.
Specifically, the A phase amplitude transformation that A phase amplitude transformation module 303A performs can use A phase inversion amplitude formula Va=
VWork* (0.5+0.5P) represents, Va is the voltage magnitude of A phase LVDT feedback signal, VWorkFor running voltage, P is that LVDT is relative
Displacement ,-1≤P≤1.The B phase amplitude transformation that B phase amplitude transformation module 303B performs can use B phase inversion amplitude formula Vb=
VExcitation* (0.5-0.5P) represents, Vb is the voltage magnitude of B phase LVDT feedback signal.
In an embodiment as illustrated in figure 3, between A phase amplitude transformation module 303A and electronic controller 306 and B phase
Direct fault location module 307 it is provided with between amplitude transformation module and electronic controller 306.Direct fault location module 307 is for selectivity
Ground performs direct fault location to A phase LVDT feedback signal and B phase LVDT feedback signal.
Specifically, direct fault location module 306 is coupled to real-time simulation module 301 to receive direct fault location control signal,
Thus determine to perform the most or not direct fault location in response to this direct fault location control signal.In the situation performing direct fault location
Under, direct fault location module 306 may also be responsive to determine direct fault location pattern in this direct fault location control signal.Direct fault location pattern bag
Include following one or more: short circuit, open circuit, to power supply short circuit, shorted to earth, open a way continuously, swinging short.
Owing to having direct fault location function, it is achieved that directly signal is carried out direct fault location from board, not only simplify and be
System structure, it is not necessary to the extra direct fault location module that increases, and the fault characteristic of LVDT can be simulated really, greatly strengthen
The function of LVDT signal imitation device.
According to scheme of the present utility model, by using the mode such as analog isolation, amplitude transformation to simulate LVDT really
The electrical characteristic of sensor signal, and ensure that safety and the reliability of LVDT analog.Additionally possesses direct fault location
Function, can directly pass through software pouring fault message.By this device, at access control system fuel control system LVDT signal
Reason software operation in real hardware, real time operating system, and the issuable fault of hardware and operating system software；And
And according to the requirement of CCAR33.28 clause, to the function of the LVDT signal processing of civil engine fuel control system and
Performance is fully verified, to ensure under all of working condition at intended operation.
Description before offer is to make any technical staff in this area all can put into practice described herein
Various aspects.However, it should be understood that protection domain of the present utility model should be as the criterion with claims, and should not be defined
Concrete structure and assembly in above explained orally embodiment.Those skilled in the art in spirit and scope of the present utility model,
Each embodiment can be carried out various changes and modifications, these variation and amendment also fall protection domain of the present utility model it
In.
Claims (8)
1. an aero-engine LVDT signal hardware is at loop test device, it is characterised in that including:
Electronic controller, is used for performing electromotor control；
Real-time simulation module, for simulating engine activation part with export activation part LVDT relative shift；
Voltage acquisition module, is coupled to described electronic controller, for gather from described electronic controller pumping signal with
The running voltage being used for described aero-engine LVDT signal hardware at loop test device is provided；
A phase amplitude transformation module, is coupled to described real-time simulation module and described voltage acquisition module, for based on from described
The LVDT relative shift of real-time simulation module performs A phase amplitude transformation to described running voltage, to export A phase LVDT feedback letter
Number to described electronic controller A channel for described electronic controller perform electromotor control emulation；And
B phase amplitude transformation module, is coupled to described real-time simulation module and described voltage acquisition module, for based on from described
The LVDT relative shift of real-time simulation module performs B phase amplitude transformation to described running voltage, to export B phase LVDT feedback letter
Number to described electronic controller channel B for described electronic controller perform electromotor control emulation.
2. aero-engine LVDT signal hardware as claimed in claim 1 is at loop test device, it is characterised in that described A
The voltage magnitude Va=V of phase LVDT feedback signalWork* (0.5+0.5P), the voltage magnitude Vb=of described B phase LVDT feedback signal
VWork* (0.5-0.5P), wherein VWorkFor described running voltage, P is described LVDT relative shift ,-1≤P≤1.
3. aero-engine LVDT signal hardware as claimed in claim 2 is at loop test device, it is characterised in that described sharp
The amplitude encouraging signal is 3 ± 0.5V, and driving frequency is 3000 ± 500Hz.
4. aero-engine LVDT signal hardware as claimed in claim 1 is at loop test device, it is characterised in that also wrap
Include:
Direct fault location module, is coupled between described A phase amplitude transformation module and described electronic controller and is coupled to described B
Between phase amplitude transformation module and described electronic controller, for optionally to described A phase LVDT feedback signal and described B phase
LVDT feedback signal performs direct fault location.
5. aero-engine LVDT signal hardware as claimed in claim 4 is at loop test device, it is characterised in that described event
Barrier injection module is coupled to described real-time simulation module to control letter in response to the direct fault location from described real-time simulation module
Number perform direct fault location or do not perform direct fault location.
6. aero-engine LVDT signal hardware as claimed in claim 5 is at loop test device, it is characterised in that performing
In the case of direct fault location, described direct fault location module is additionally in response to described direct fault location control signal and selects direct fault location pattern.
7. aero-engine LVDT signal hardware as claimed in claim 6 is at loop test device, it is characterised in that fault is noted
Enter pattern include following one or more: short circuit, open circuit, to power supply short circuit, shorted to earth, open a way continuously, swinging short.
8. aero-engine LVDT signal hardware as claimed in claim 1 is at loop test device, it is characterised in that also wrap
Include:
A phase analog isolation module, is coupled between described voltage acquisition module and described A phase amplitude transformation module, for inciting somebody to action
Running voltage through isolating passes to described A phase amplitude transformation module；And
B phase analog isolation module, is coupled between described voltage acquisition module and described B phase amplitude transformation module, for inciting somebody to action
Running voltage through isolating passes to described B phase amplitude transformation module.
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| CN201620679457.4U CN205748924U (en) | 2016-06-30 | 2016-06-30 | Aero-engine LVDT signal hardware is at loop test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170128A (en) * | 2017-12-28 | 2018-06-15 | 西安庆安航空试验设备有限责任公司 | Simulator, analogy method and the simulated assembly of LVDT input-output characteristics |
| CN111610027A (en) * | 2019-02-22 | 2020-09-01 | 中国航发商用航空发动机有限责任公司 | Aircraft engine fault simulation system and simulation method |
| CN112394707A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Circuit for simulating dynamic model of position sensor LVDT of aero-engine fuel regulator |
| CN113358366A (en) * | 2021-06-07 | 2021-09-07 | 南京航空航天大学 | Aircraft engine fault simulation system and control method |
-
2016
- 2016-06-30 CN CN201620679457.4U patent/CN205748924U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170128A (en) * | 2017-12-28 | 2018-06-15 | 西安庆安航空试验设备有限责任公司 | Simulator, analogy method and the simulated assembly of LVDT input-output characteristics |
| CN108170128B (en) * | 2017-12-28 | 2020-03-31 | 西安庆安航空试验设备有限责任公司 | LVDT input/output characteristic simulation device, LVDT input/output characteristic simulation method and LVDT input/output characteristic simulation module |
| CN111610027A (en) * | 2019-02-22 | 2020-09-01 | 中国航发商用航空发动机有限责任公司 | Aircraft engine fault simulation system and simulation method |
| CN112394707A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Circuit for simulating dynamic model of position sensor LVDT of aero-engine fuel regulator |
| CN113358366A (en) * | 2021-06-07 | 2021-09-07 | 南京航空航天大学 | Aircraft engine fault simulation system and control method |
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Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee after: China Hangfa commercial aviation engine limited liability company Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee before: AVIC Commercial Aircraft Engine Co.,Ltd. |