CN106444722A - Simulation system for electrical performance of fuel regulator - Google Patents
Simulation system for electrical performance of fuel regulator Download PDFInfo
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- CN106444722A CN106444722A CN201611031546.9A CN201611031546A CN106444722A CN 106444722 A CN106444722 A CN 106444722A CN 201611031546 A CN201611031546 A CN 201611031546A CN 106444722 A CN106444722 A CN 106444722A
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- digital potentiometer
- microprocessor
- fuel regulator
- nnout
- output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a simulation system for the electrical performance of a fuel regulator. The simulation system comprises an oscillator, a gear input module, a microprocessor, a digital potentiometer and a transformer, wherein a power supply module supplies power to the microprocessor and the digital potentiometer; a signal input end of the microprocessor is connected with signal output ends of the oscillator and the gear input module, and a signal output end of the microprocessor is connected with a signal input end of the digital potentiometer; a fixing end A of the digital potentiometer is connected with a total winding output end NNOUTALL of the transformer, a fixing end B of the digital potentiometer is connected with an NNOUT- of an output winding of the transformer, and a sliding end W of the digital potentiometer is connected with an NNOUT+ of the output winding of the transformer. According to the simulation system provided by the invention, the problem of difficulties in out-field maintenance caused by large size and difficult y in carrying of the fuel regulator is solved; and the problem of increase of the number of spare parts of an engine controller as the flexible transference of an engine control algorithm cannot be completed in the outfield due to the limit to a place is solved.
Description
Technical field
The present invention relates to technical field of engine control is and in particular to a kind of simulation system of fuel regulator electric property
System.
Background technology
In engine control system, engine controller and fuel regulator are most important two parts, and both are tight
Close fit, completes the fuel feeding of electromotor.But, after fuel regulator does not provide in time or loads electromotor, to electromotor control
Device single machine test aspect processed brings a lot of difficulties, especially engine controller controls test of heuristics aspect and electromotor and controls
Device algorithm is in terms of spare part transplanting.
Engine controller and fuel regulator are fixed Combination, must in test engine controller control algolithm
Fuel regulator need be accessed.Amount of fuel according to needed for electromotor, engine controller passes through to control according to present amount
Algorithm sends control waveform to fuel regulator, adjusts fuel regulator oil circuit valve action, returns the amount of fuel after adjusting, enters
And verify the fuel oil control ability of engine controller.Generally engine controller and fuel regulator are produced by different manufacturers,
Make the level test of institute of engine controller controls algorithm factory become very difficult, have a strong impact on the progress of product payment.Meanwhile, when
After fuel regulator loads whole machine, because dismounting difficulty is so that the single machine test of engine controller and unit troubleshooting become more
Plus it is difficult；
Due to the diversity of fuel regulator itself, directly there is regular collocation in engine controller and fuel regulator
Relation.When engine controller parts replacement, need the ratiometric conversion relation of former controller is transplanted in spare part.Work as fuel oil
After actuator loads electromotor, carry out auxiliary tone it is impossible to enter it is impossible to disassemble with engine controller spare part as non-replaceable part
The transplanting of row ratiometric conversion relation.Therefore each fuel regulator configures the spare part of fixed number, thus causing electromotor control
Device processed is quantitative to be increased and wastes.
At present, the test of engine controller controls algorithm generally carrys out test engine control using real fuel regulator
Device processed, but because fuel regulator volume is big, carry difficulty, bring a lot of difficulties to flight-line service；Engine controller controls
The transplanting of algorithm, by controller loads the engine fuel control of laboratory, carrys out regulation parameter, completes the shifting of parameter
Plant.Because the restriction in place it is impossible to complete the flexible transplanting of electromotor control algolithm in outfield, cause engine controller spare part
The increasing of quantity.
Chinese patent CN103699114A disclose a kind of controller for debugging tests of aviation fuel regulating device and
Control method, this patent is applied to Aeroengine control technology field, and adjusts for aero-engine fuel oil regulating device
Examination, is concentrated measurement using modular technology and controls motility and the versatility improving controller, carried using digital control technology
High system control accuracy；Do not have open application simulation technology to solve this patent technical problem to be solved, this patent
This patent technical problem to be solved can not be solved.
Content of the invention
For solving above-mentioned technical problem, the invention provides a kind of analog systemss of fuel regulator electric property, this combustion
The analog systemss of oil conditioner electric property set the resistance of digital regulation resistance by the way of the input of analog quantity AO.Digital current potential
Fixing end A, B connection transformer coil output NNOUTALL and NNOUT- of device, sliding end W are defeated as angular displacement sensor
Go out NNOUT+.Controller communicates to set the resistance of digital potentiometer by SPI according to resistance demand, realize NNOUT+ and
Resistance variations between NNOUT-.The amplitude realizing NNOUT square wave when NNIN square wave input inputs regulation waveforms amplitude with AO
Function, complete simulate fuel regulator electric function；Solve that fuel regulator volume is big, carry difficulty, to outfield dimension
Protecting band carrys out much difficult problem；And because the restriction in place it is impossible to complete the flexible transplanting of electromotor control algolithm in outfield,
Cause the problem increasing of engine controller spare part quantity.
The amplitude realizing NNOUT square wave when NNIN square wave input inputs, with AO, the function of adjusting waveforms amplitude, completes mould
Intend the electric function of fuel regulator
The present invention is achieved by the following technical programs.
The present invention provide a kind of fuel regulator electric property analog systemss, including agitator, gear input module,
Microprocessor, digital potentiometer and transformator, microprocessor, digital potentiometer are powered by power module；Described microprocessor
Signal input part is connected with the signal output part of agitator and gear input module respectively, the signal output part of described microprocessor
It is connected with the signal input part of digital potentiometer；Fixing end A of described digital potentiometer and the total winding terminal of the output of transformator
NNOUTALL connects, and fixing end B is connected with the NNOUT- of the output winding of transformator, the output winding of sliding end W and transformator
NNOUT+ connect；
The square-wave signal NNIN that engine controller sends be input to transformator field winding coil-end NNIN+ and
NNIN-.
Described microprocessor is connected with the signal input part of digital potentiometer by SPI communication.
The AD5293 chip of 1024 gears selected by described digital potentiometer.
Described microprocessor is from 8 AVR microcontroller ATmega128s carrying AD acquisition function.
The beneficial effects of the present invention is：The resistance of digital regulation resistance is set by the way of the input of analog quantity AO.Numeral
Fixing end A, B connection transformer coil output NNOUTALL and NNOUT- of potentiometer, sliding end W is as angular displacement sensor
Output NNOUT+.Controller communicates to set the resistance of digital potentiometer by SPI according to resistance demand, realize NNOUT+ and
Resistance variations between NNOUT-.Finally, the amplitude realizing NNOUT square wave when NNIN square wave input inputs regulation waveform with AO
The function of amplitude, completes to simulate the electric function of fuel regulator, is that the single machine test aspect of engine controller brings very
Facilitate more.Solve that fuel regulator volume is big, carry difficulty, bring much difficult problem to flight-line service；Also solve
Because the restriction in place it is impossible to complete the flexible transplanting of electromotor control algolithm in outfield, cause engine controller spare part number
The problem increasing of amount.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the data software flow chart of microprocessor in Fig. 1；
Fig. 3 is inventive engine controller control algolithm test block chart；
Fig. 4 is the ratiometric conversion relation schematic diagram of inventive engine controller.
Specific embodiment
Technical scheme be described further below, but claimed scope be not limited to described.
A kind of analog systemss of fuel regulator electric property as shown in Figure 1, including agitator, gear input module,
Microprocessor, digital potentiometer and transformator, microprocessor, digital potentiometer are powered by power module；Described microprocessor
Signal input part is connected with the signal output part of agitator and gear input module respectively, the signal output part of described microprocessor
It is connected with the signal input part of digital potentiometer；Fixing end A of described digital potentiometer and the total winding terminal of the output of transformator
NNOUTALL connects, and fixing end B is connected with the NNOUT- of the output winding of transformator, the output winding of sliding end W and transformator
NNOUT+ connect；
The square-wave signal NNIN that engine controller sends be input to transformator field winding coil-end NNIN+ and
NNIN-.
Described microprocessor is connected with the signal input part of digital potentiometer by SPI communication.
The AD5293 chip of 1024 gears selected by described digital potentiometer；Described microprocessor is selected and is carried AD acquisition function
8 AVR microcontroller ATmega128s.Gear input is carried out by the AD acquisition function of ATmega128 chip, is led to by SPI
Interrogate and to set the resistance of digital potentiometer AD5293.AD0～AD3 inputs for gear；The reset of AD5293 adopts RC reset mode；
VDD、VSS、VLOGIC10 μ F in parallel and 0.1 μ F electric capacity, to GND, play filter action；VDD, VSS power for ± 15V bipolarity；
VLOGICIt is chosen to be the supply voltage VCC of ATmega128, exports the judgment criterion of SPI signal high level as ATmega128, protect
The concordance of card level.The additional 1 μ F electric capacity of EXT_CAP is to GND；RDY, SDO are OC level open circuit mode, additional pull-up 2.2K resistance
To VCC, realize voltage jump and gather for ATmega128.The flag that DP_RDY adjusts for gear, 1 is to adjust successfully, and 0 is
Adjust unsuccessfully, as the output of simulation angular displacement sensor, for host computer or external circuit.
Fuel regulator electric property is an electromagnetic sensor, for measuring the rotating shaft angular travel of valve, by stator
With rotor composition, wherein stator winding is as the former limit of transformator, the signal of reception fixed excitation frequency and excitation voltage, rotor
Winding as the secondary of transformator, by the change (i.e. the rotating shaft angular travel situation of valve) of electromagnetic coupled and the angular displacement of rotor
Induce the induced voltage of different amplitudes, its amplitude is linear with corner in certain angle range.
Ignore the internal complicated formula of fuel regulator and relational expression, in terms of input and output angle, input as a square wave
Signal, is output as going out the transformable square wave of amplitude according to the angular displacement isolated variable of rotating shaft, similar to rotary transformer.In electronics
In circuit, control the output difficulty of rotary transformer larger by way of mechanics, can be converted into " stationary transformer+
The electronic control mode of adjustable resistor ", by the change of adjustable resistor resistance, changes electric resistance partial pressure ratio, realizes output
The change of square wave amplitude.
Stationary transformer realizes the isolated variable output waveform of input square-wave signal；The turn ratio of stationary transformer coil,
Conductor resistance, winding mode, phase relation and each winding of fuel regulator are consistent, wherein coil input end NNIN+ and
NNIN- simulates field winding, outfan NNOUT+ and NNOUT- simulation output winding.Output NNOUT+ and NNOUT- end with excitatory
Signal NNN+ and NNN- end same phase.
The amplitude that adjustable resistance R realizes output waveform changes.First, square-wave signal NNIN waveform can be input to field winding
Coil-end NNIN+ and NNIN-, are exporting total winding terminal NNOUTALL and NNOUT- output square wave A after coils isolated variable, so
Square wave A carries out amplitude partial pressure output by adjustable resistance R afterwards, thus the transformable square wave of output amplitude between 0 and NNOUT-
NNOUT.
In conjunction with ATE and digital potentiometer, adjust the friendship between simulator and ATE for realizing fuel oil
Mutually, adjustable resistance to be realized by " microprocessor+digital potentiometer ".Set numeral by the way of the input of analog quantity AO
The resistance of potentiometer.Fixing end A, B connection transformer coil output NNOUTALL and NNOUT- of digital regulation resistance, sliding end
W is as the output NNOUT+ of angular displacement sensor.Controller communicates to set digital potentiometer by SPI according to resistance demand
Resistance, realizes the resistance variations between NNOUT+ and NNOUT-.Finally, the width of NNOUT square wave is realized when NNIN square wave input
Value inputs the function of adjusting waveforms amplitude with AO, completes to simulate the electric function of fuel regulator.
Software mainly includes AD collection, SPI writes data, SPI reads the modules such as data.Software configuration is using " while+for follows
Ring " apply mechanically pattern.The data software flow chart of microprocessor is as shown in Figure 2.
Microprocessor recognizes the need for the gear value setting by " AD collection " module, and the gear being stored with it is compared
Relatively.When gear change, " SPI writes data " module writes data into AD5293 chip according to the sequential chart of writing shown in figure 2 above, it
" SPI reads data " module reads gear data value according to the reading sequential chart shown in figure 3 above from AD5293 chip afterwards；Warp and setting
Gear value is more afterwards by DP_RDY set.If set position is unsuccessful, repeats and set again for 2 times；If 3 settings all do not become
Work(, then exit circulation, and gear sets unsuccessfully.
The present invention solves the problems, such as that the single machine test of engine controller and unit troubleshooting are difficult.In engine controller
During single machine test, need the correctness of test engine controller " control algolithm ".As shown in figure 3, by " fuel oil adjusts simulation
Device " completes the test of " control algolithm "." fuel oil regulation simulator " receives the standard NNIN waveform that engine controller sends, and
Simulate the variable NNOUT waveform of the action output waveform amplitude of fuel regulator oil circuit valve.Engine controller receives
After NNOUT waveform, obtain feeding back amount of fuel through " ratiometric conversion ", pass through " control algolithm " output after difference with calculating fuel oil and measuring
PWM waveform.Finally, the correctness by testing PWM waveform judges the correctness of control algolithm, completes engine controller
The test of " control algolithm ".
The ratiometric conversion relation of engine controller exports amplitude and the feedback amount of fuel of NNOUT waveform for fuel regulator
Relation, by the self-characteristic of fuel regulator, usual conversion relation is that (x is the amplitude of NNOUT waveform to y=kx+b, and y is anti-
Feedback amount of fuel) linear relationship.Engine controller original paper pass through " fuel oil regulation simulator " adjusted point A1 (x1, y1) and
After A2 (x2, y2) and checkpoint B1, B2, B3, " fuel oil regulation simulator " inputs same waveform to engine controller spare part
Amplitude x1, x2, makes spare part export identical feedback amount of fuel y1, y2 by adjusting resistance R1, R2 in spare part.When on spare part
Obtain it is believed that spare part and original paper have identical conversion relation during A1 (x1, y1) and A2 (x2, y2), that is, spare part and original paper
There is same ratio conversion relation.Simultaneously in order to improve transplanting precision, increase smallest point B1, the school of median point B2 and maximum point B3
Test work, so far the transplanting of completed percentage conversion relation.Ratiometric conversion relation schematic diagram is as shown in Figure 4.
Claims (4)
1. a kind of analog systemss of fuel regulator electric property, including agitator, gear input module, microprocessor, numeral
Potentiometer and transformator, microprocessor, digital potentiometer powered by power module it is characterised in that：The letter of described microprocessor
Number input is connected with the signal output part of agitator and gear input module respectively, the signal output part of described microprocessor with
The signal input part of digital potentiometer connects；Fixing end A of described digital potentiometer and the total winding terminal of the output of transformator
NNOUTALL connects, and fixing end B is connected with the NNOUT- of the output winding of transformator, the output winding of sliding end W and transformator
NNOUT+ connect；
The square-wave signal NNIN that engine controller sends is input to field winding coil-end NNIN+ and the NNIN- of transformator.
2. fuel regulator electric property as claimed in claim 1 analog systemss it is characterised in that：Described microprocessor leads to
Cross SPI communication to be connected with the signal input part of digital potentiometer.
3. fuel regulator electric property as claimed in claim 1 or 2 analog systemss it is characterised in that：Described numeral electricity
Position meter is from the AD5293 chip of 1024 gears.
4. fuel regulator electric property as claimed in claim 1 or 2 analog systemss it is characterised in that：Described microprocessor
Device is from 8 AVR microcontroller ATmega128s carrying AD acquisition function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031546.9A CN106444722B (en) | 2016-11-18 | 2016-11-18 | Simulation system for electrical performance of fuel regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031546.9A CN106444722B (en) | 2016-11-18 | 2016-11-18 | Simulation system for electrical performance of fuel regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106444722A true CN106444722A (en) | 2017-02-22 |
| CN106444722B CN106444722B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611031546.9A Active CN106444722B (en) | 2016-11-18 | 2016-11-18 | Simulation system for electrical performance of fuel regulator |
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