CN106093806A - Helicopter AC power-supply system detection device - Google Patents
Helicopter AC power-supply system detection device Download PDFInfo
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- CN106093806A CN106093806A CN201610396641.2A CN201610396641A CN106093806A CN 106093806 A CN106093806 A CN 106093806A CN 201610396641 A CN201610396641 A CN 201610396641A CN 106093806 A CN106093806 A CN 106093806A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of Helicopter AC power-supply system detection device, this detection device includes: dragging system, for being connected with the alternating current generator of Helicopter AC power-supply system to drive alternating current generator work；Load system, for the various loads of helicopter simulating AC power supply system work carrying；Control and data actuation, all communicate to connect with dragging system and load system, control dragging system, load system and Helicopter AC power-supply system respectively with the duty of helicopter simulating AC power supply system Real-time Collection all kinds of detection signal so that Helicopter AC power-supply system is carried out performance detection for exporting control signal.The present invention can carry out complete detection, integrated level is high, through a set of detection device, Helicopter AC power-supply system, alternating current generator, control device and current transformer can be detected, and according to test request, open loop and closed loop detection can be carried out, manually and automatically detect, there is the Automatic analysis ability of test overall process.
Description
Technical field
The present invention relates to helicopter electronic accessories field, especially, relate to a kind of Helicopter AC power-supply system detection
Device.
Background technology
Helicopter AC power-supply system is made up of alternating current generator, control device summation current transformer, and it is defeated to aircraft electrical network
Go out alternating current, for airborne equipment.Major function has two: one to be steady-state adjustment function, and another is failure protection function.
The AC power supply system of certain type helicopter needs system, alternating current generator, control in development, test, delivery process
Device and current transformer carry out Data Detection.This AC power supply system function is complicated, and the data of needs detection are many, precision is wanted
Ask high.And the detection device of existing routine there is problems in that 1), level of integrated system low, AC power supply system, alternative electric generation
Machine, control box summation current transformer respectively need a set of detection equipment, and equipment is many, and efficiency is low, costly；2), detectable data
Few, it is only capable of doing the Function detection of routine, it is impossible to meet the demand of this AC power supply system；3), detection process is complicated, it is impossible to directly
The failure protection function of detection AC power supply system, can only be by realizing the detection controlling unit protection function indirectly；4)、
Accuracy of detection is low, and data only just have higher precision in a certain specific minizone, and the Data Detection precision in other intervals is relatively
Low, it is impossible to meet the demand of this AC power supply system.
Summary of the invention
The invention provides a kind of Helicopter AC power-supply system detection device, to solve existing Helicopter AC electricity
The technical problem that the Data Detection concentration degree of origin system is low, detection process is complicated and accuracy of detection is low.
The technical solution used in the present invention is as follows:
A kind of Helicopter AC power-supply system detection device, for carrying out data inspection to Helicopter AC power-supply system
Surveying, the present invention detects device and includes:
Dragging system, for being connected with the alternating current generator of Helicopter AC power-supply system to drive alternating current generator work；
Load system, for the various loads of helicopter simulating AC power supply system work carrying；
Control and data actuation, all communicate to connect with dragging system and load system, be used for exporting control signal and control respectively
Dragging system processed, load system and Helicopter AC power-supply system are with the duty of helicopter simulating AC power supply system reality
Time gather all kinds of detection signal so that Helicopter AC power-supply system is carried out performance detection.
Further, control to include with data actuation:
Signal sampling input block, for gathering all kinds of detection signals of Helicopter AC power-supply system；
Signal condition unit, connects signal sampling input block, for all kinds of inspections exported by signal sampling input block
Survey signal and pass to industrial computer after signal condition is changed；
Industrial computer, is provided with performance parameter test module in industrial computer, manage the signal of unit output also for receiving signal
Carry out corresponding data to process to detect the properties of product of Helicopter AC power-supply system；
Instruction execution unit, is connected with industrial computer communication, regulates Helicopter AC for the control signal according to industrial computer
The duty of power-supply system.
Further, instruction execution unit includes:
Communicating circuit, with the port communication of industrial computer；
Microprocessor, is connected with communicating circuit, receives the control signal of industrial computer through communicating circuit；
Switching value output circuit, drives switching relay for the digital output signal of microprocessor is converted to control instruction
Helicopter AC power-supply system is controlled by device group.
Further, the outfan of industrial computer connects analog output card, and analog output card connecting test is believed
Number device, test advertiser generates alternating current power supply simulated failure signal, alternating current power supply under the driving of analog output card
Simulated failure signal inputs to Helicopter AC power-supply system through switching relay group to carry out error protection detection.
Further, in industrial computer, it is provided with dragging platform operation monitoring module, is used for driving dragging system work and to dragging
System carries out on-line monitoring.
Further, dragging system includes arrangements for speed regulation, dragging motor, shaft joint and the gearbox being sequentially connected with, speed governing
Device receives the instruction works of industrial computer and then drives dragging motor, shaft joint and gearbox output, also includes dragging system
Carry out the Pulvis Emolliens hot systems of cooling and lubricating.
Further, in industrial computer, it is provided with load dispatch monitoring module, for the most right according to test request
Load system carries out Load-unload control and load system is carried out on-line monitoring.
Further, load system includes being connected with alternating current generator outfan and various electricity consumptions set on helicopter simulating
The first standby load cabinet and alternating current generator pilot exciter are connected to test the second load cabinet of pilot exciter load capacity.
Further, signal sampling input block is based on subsection detecting technique, according to the range district being sampled residing for signal
Between drive corresponding sensor sample to meet the sampling precision in each interval.
Further, in industrial computer, it is provided with metering module, for the acquisition precision of sensor is implemented metering, according to metering
As a result, the configuration parameter of corresponding sampling channel is revised.
The method have the advantages that
Helicopter AC power-supply system of the present invention detection device, by arranging dragging system to drive alternating current generator work
Making, load system is with the various loads of helicopter simulating AC power supply system work carrying, and passes through to control and data actuation control
System output control signal controls dragging system, load system and Helicopter AC power-supply system respectively and exchanges with helicopter simulating
The duty of power-supply system Real-time Collection all kinds of detection signal are to carry out performance detection, energy to Helicopter AC power-supply system
Helicopter AC power-supply system carries out complete detection, and integrated level is high, can be through a set of detection device to Helicopter AC power supply
System, alternating current generator, control device and current transformer detect, and according to test request, can enter AC power supply system
Row open loop and closed loop detection, manually and automatically detect alternating current generator, have test overall process and (include stable state and transient state mistake
Journey) Automatic analysis ability, level of integrated system height, complete function, detection parameters precision are high.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to accompanying drawings, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structure block diagram of preferred embodiment of the present invention Helicopter AC power-supply system detection device；
Fig. 2 is to control the structure block diagram with data actuation in the preferred embodiment of the present invention；
Fig. 3 is the structure block diagram of dragging system in the preferred embodiment of the present invention；
Fig. 4 is the structural representation that preferred embodiment of the present invention detection device is combined with Helicopter AC power-supply system；
Fig. 5 is the structural representation of industrial computer built-in module in the preferred embodiment of the present invention；
Fig. 6 is the structural representation of overvoltage protection relay assembly in preferred embodiment of the present invention switching relay group；
Fig. 7 is the structural representation of open-phase protection relay combination in preferred embodiment of the present invention switching relay group.
Description of reference numerals:
10, dragging system；11, arrangements for speed regulation；12, dragging motor；
13, shaft joint；14, gearbox；15, Pulvis Emolliens hot systems；
20, load system；
30, control and data actuation；
31, signal sampling input block；32, signal condition unit；33, industrial computer；331, performance parameter test module；
332, platform operation monitoring module is dragged；333, load dispatch monitoring module；334, metering module；
34, instruction execution unit；35, communicating circuit；36, analog output card；
37, test advertiser；38, switching relay group.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The preferred embodiments of the present invention provide a kind of Helicopter AC power-supply system detection device, for helicopter
AC power supply system carries out Data Detection, to meet the performance test of Helicopter AC power-supply system, and grinding of strong guarantee product
Make, test and pay.With reference to Fig. 1, the present embodiment detection device includes: dragging system 10, for Helicopter AC power supply system
The alternating current generator of system connects to drive alternating current generator work；Load system 20, works for helicopter simulating AC power supply system
The various loads of carrying；Control and data actuation 30, all communicate to connect with dragging system 10 and load system 20, be used for exporting control
Signal processed controls dragging system 10, load system 20 and Helicopter AC power-supply system respectively with helicopter simulating alternating current power supply system
The duty of system Real-time Collection all kinds of detection signal are to carry out performance detection to Helicopter AC power-supply system.
The present embodiment works with drive alternating current generator by arranging dragging system, and load system is with helicopter simulating alternating current
Origin system work carrying various loads, and by control with data actuation control output control signal respectively control drag system
System, load system and Helicopter AC power-supply system are with the duty of helicopter simulating AC power supply system Real-time Collection
Helicopter AC power-supply system, so that Helicopter AC power-supply system is carried out performance detection, can be carried out comprehensively by all kinds of detection signals
Detection, integrated level is high, can be through a set of detection device to Helicopter AC power-supply system, alternating current generator, control device and electric current
Transformer detects, and according to test request, AC power supply system can carry out open loop and closed loop detection, enter alternating current generator
Row manually and automatically detects, and has the Automatic analysis ability of test overall process (including stable state and transient process), system collection
One-tenth degree height, complete function, detection parameters precision are high.
The present embodiment controls the Digital electronic control system using industrial computer to combine with data actuation 30, ginseng with single-chip microcomputer
According to Fig. 2, comprising:
Signal sampling input block 31, for gathering all kinds of detection signals of Helicopter AC power-supply system；Specifically, respectively
Class detection signal includes: 1), on-off model: such as helicopter startup, stop, the on-off model such as protection；The present embodiment
Each on-off model is for the control process of helicopter simulating central controller；2), analog signals: include electric current, voltage and
Temperature signal, wherein, electric current, voltage need to use transformer or Hall element detection alternating current generator, control device and mutual inductance
Voltage that device is corresponding, electric current, temperature uses thermal resistance temperature sensor to detect the operating temperature of the present embodiment detection device；3)、
Frequency quantity signal: include rotating speed and electric voltage frequency, rotating speed uses the rotating speed of magnetoelectric tachometric transducer detection alternating current generator, voltage
Frequency signal uses voltage signal or the signal detection alternating current generator of Hall element, controls device and voltage corresponding to transformer
Frequency.
Signal condition unit 32, connects signal sampling input block 31, for exported by signal sampling input block 31
All kinds of detection signals pass to industrial computer 33 after signal condition is changed；In the present embodiment, signal condition unit 32 is by all kinds of inspections
Survey signal be converted to input card required standard signal and import industrial computer 33 the digital signal conversion exported by industrial computer
The signal of telecommunication required for relay.Signal condition unit 32 includes analog signals conditioning module and frequency quantity signal condition mould
Block, wherein, analog signals conditioning module is used for becoming analog input signal the standard signal of 0～5V (or-5V～5V),
Including voltage, electric current and temperature signal regulation, wherein, signal condition part and sensing part have all carried out physical isolation,
Ensure that the reliable of system and safety；Frequency quantity Signal-regulated kinase is for becoming by frequency quantity input signal into the standard block of 5V
Signal, frequency quantity signal condition includes the conditioning of tach signal, alternating current generator output signal and secondary excitation output signal etc..Frequency
Amount signal condition uses existing ripe circuit, and it is mainly characterized by Zero-cross comparator and Filtering Processing.
Industrial computer 33, is provided with performance parameter test module 331 in industrial computer 33, export for receiving signal reason unit 32
Signal and carry out corresponding data process with detect Helicopter AC power-supply system properties of product.The present embodiment industrial computer 33 leads to
Cross plug-in automatically carry out signals collecting and output order to instruction execution unit 34 be operated state switching and load cut
Changing etc. and to adjust, in the present embodiment, performance parameter test module 331 is for requiring to product (such as: control dress according to relevant technology
Put, alternating current generator, transformer) test.Signal sampling input block 31 Real-time Collection, by the relevant parameter of trial product, passes through
Network passes to industrial computer 33, industrial computer 33 carry out data process on request, and result shown over the display.
Preferably, data process and include: switch amount signal carries out back surveying, and analog signals and frequency quantity signal are added up, counted
Calculate (meansigma methods, extreme value, Fourier transformation etc.), and compare with standard value, it is judged that product is the most qualified.In the present embodiment, standard
Value is inputted by user, and testing result is with chart, and the mode such as curve shows, and can export printing, with reference to Fig. 2, by with industry control
The display of machine communication connection or printer perform corresponding display and printing.
Instruction execution unit 34, is connected with industrial computer 33 communication, regulates for the control signal according to industrial computer 33 and goes straight up to
The duty of machine AC power supply system.The deficiency of industrial computer system maximum is not have house dog, at electric source disturbance and outside letter
Under number disturbed condition, program may be flown away, and causes system disorders, causes the damage of detection equipment and testpieces.For improving inspection
The reliability of measurement equipment, the present embodiment instruction execution unit 34 have employed the Single Chip Microcomputer (SCM) system with house dog.Soft equipped with controlling
The instruction execution unit 34 of part includes: communicating circuit 35, with the port communication of industrial computer 33；Microprocessor, with communicating circuit 35
Connect, receive the control signal of industrial computer 33 through communicating circuit 35；Switching value output circuit, for by defeated for the numeral of microprocessor
Go out signal be converted to control instruction drive switching relay group 38 Helicopter AC power-supply system is controlled.
Preferably, with reference to Fig. 2, the outfan of the present embodiment industrial computer 33 connects analog output card 36, analog quantity
Output board card 36 connecting test advertiser 37, test advertiser 37 generates exchange under the driving of analog output card 36
Power supply simulated failure signal, alternating current power supply simulated failure signal inputs to Helicopter AC power-supply system through switching relay group 38
To carry out error protection detection.The failure protection function of Helicopter AC power-supply system, i.e. breaks down when AC power supply system
Or owing to electrical equipment fault causes AC power supply system parameter to exceed standard, AC power supply system should be stopped power supply, and simultaneously switches off
Electrical equipment.When normally working, AC power supply system output is normal signal, it is impossible to detection defencive function, simultaneously alternating current
Machine is rashly placed on malfunction when running up has higher risk can damage testpieces even testing crew.
The present embodiment uses alternating current power supply simulated failure signal, and by relay assembly switching by the fault-signal input AC of simulation
Power-supply system, it is achieved the detection of AC power supply system failure protection function.Due to AC power supply system output is three-phase alternating current
Signal, from the similarity of characteristics of signals, it is possible to use alternating current power supply is simulated.When carrying out protection detection, instruction execution unit
34 send signal by receiving the instruction of industrial computer 33, and switching relay group 38 is by simulated failure signal input ac power system
System, now alternating current generator is still within normal operating conditions, the foundation that its output signal judges not as protection.Protecting
During Function detection, also need to detect guard time.One group of output of all switching relays meets 5V and monitors signal, is used for detecting protection
Time or confirmation switching action.
Fig. 6 illustrates the structural representation of the relay assembly of overvoltage protection, and it uses four groups of relays exported:
Control signal: 24V (instruction execution unit 34 produces)；
First group of output: normally closed pin connects 5V, normally opened pin ground connection；
Other three groups outputs: normally closed pin connects normal signal, normally opened pin connects fault-signal.
5V monitoring signal is used for measuring guard time.
Fig. 7 illustrates the structural representation of the relay assembly of open-phase protection, and it uses two groups of relays exported:
Control signal: 24V (instruction execution unit 34 produces)；
First group of output: normally closed pin connects 5V, normally opened pin ground connection；
Second group of output: normally closed pin connects normal signal, and normally opened pin is unsettled.
5V monitoring signal is used for measuring guard time, and principle is as follows: instruction execution unit 34 receives the switching of industrial computer 33
Instruction sends switching relay control signal, and industrial computer record first group output 0 changes to the moment T1 of 5V, then records alternating current
The moment T2, T2-T1 of origin system protection signal output are guard time.
With reference to Fig. 3 and Fig. 4, the present embodiment dragging system 10 includes the arrangements for speed regulation 11 being sequentially connected with, dragging motor 12, connects
Axial organ 13 and gearbox 14, arrangements for speed regulation 11 receive the instruction works of industrial computer 33 and then drive dragging motor 12, shaft joint 13
And gearbox 14 exports, also include the Pulvis Emolliens hot systems 15 that dragging system 10 is carried out cooling and lubricating.
Preferably, industrial computer 33 in house software main program module sees Fig. 5, wherein:
Drag platform operation monitoring module 332, be used for driving dragging system 10 to work and dragging system 10 being supervised online
Control.Its management work mainly includes dragging the startup of platform, stopping, rotational speed setup, and acceleration, deceleration degree sets, according to tested alternating current
Machine cooling requires that control etc. implemented by cooling system.Dragging platform and cooling system running status are mainly implemented in by monitoring work
Line monitors, and shows relevant information in real time, once breaks down, automatically provides warning information, and automatically take measures, isolation event
Barrier.In the present embodiment, dragging system 10 connects alternating current generator to drive alternating current generator rotation, when a failure occurs it, such as speedup
Case oil-break, AC phase shortage, excessively stream, Motor Over Speed, cooling fan power-off etc., can cut off rapidly major loop, simultaneously display alarm
Region and trouble point.Fault is not got rid of, and motor does not allow to start.
Load dispatch monitoring module 333, for manually or automatically adding, unload load system 20 according to test request
Carry and control and load system 20 is carried out on-line monitoring.When a failure occurs, software is reported to the police.In the present embodiment, load system 20
Including being connected with alternating current generator outfan and the first load cabinet of various electrical equipments and alternating current generator on helicopter simulating
Pilot exciter is connected to test the second load cabinet of pilot exciter load capacity.
Preferably, the present embodiment signal sampling input block 31 is based on subsection detecting technique, according to being sampled residing for signal
Range interval drive corresponding sensor sample to meet the sampling precision in each interval.The present embodiment detects skill based on segmentation
Art, will be sampled signal and be divided into several interval in the range of gamut, use suitable sampling sensor, signal can be made to exist
Sampling precision in each interval is satisfied by technology requirement.Preferably, the most built-in metering module of industrial computer 33 334, for sensing
The acquisition precision of device implements metering, according to metric results, revises the configuration parameter of corresponding sampling channel.The present embodiment passes through program
Judge to be sampled the range residing for signal interval, control the switching of relay, by the signal sampling in different sensors to controlling
With data actuation, improve gamut accuracy of detection.
Preferably, the present embodiment industrial computer 33 is the most built-in is controlled monitoring module by test specimen state, shows exchange in real time
Motor pilot exciter voltage, pilot exciter frequency, pilot exciter electric current, exciting current, excitation voltage, electromotor three-phase output electricity
The parameters such as pressure, electric current and frequency.Preferably, alternating current generator running status is monitored by photographic head.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a Helicopter AC power-supply system detection device, for Helicopter AC power-supply system is carried out Data Detection,
It is characterized in that, described detection device includes:
Dragging system (10), for being connected to drive described alternating current generator with the alternating current generator of described Helicopter AC power-supply system
Work；
Load system (20), for simulating the various loads of described Helicopter AC power-supply system work carrying；
Control and data actuation (30), all communicate to connect, for defeated with described dragging system (10) and described load system (20)
Go out control signal control respectively described dragging system (10), described load system (20) and described Helicopter AC power-supply system with
Simulate the duty of described Helicopter AC power-supply system Real-time Collection all kinds of detection signal with to described Helicopter AC
Power-supply system carries out performance detection.
Helicopter AC power-supply system the most according to claim 1 detection device, it is characterised in that
Described control including with data actuation (30):
Signal sampling input block (31), for gathering all kinds of detection signals of described Helicopter AC power-supply system；
Signal condition unit (32), connects described signal sampling input block (31), for by described signal sampling input block
(31) all kinds of detection signals exported pass to industrial computer (33) after signal condition is changed；
Industrial computer (33), is provided with performance parameter test module (331) in described industrial computer (33), be used for receiving described signal condition
Signal that unit (32) exports also carries out corresponding data and processes to detect the properties of product of described Helicopter AC power-supply system；
Instruction execution unit (34), is connected with described industrial computer (33) communication, believes for the control according to described industrial computer (33)
Number regulate described Helicopter AC power-supply system duty.
Helicopter AC power-supply system the most according to claim 2 detection device, it is characterised in that
Described instruction execution unit (34) including:
Communicating circuit (35), with the port communication of described industrial computer (33)；
Microprocessor, is connected with described communicating circuit (35), receives the control of described industrial computer (33) through described communicating circuit (35)
Signal processed；
Switching value output circuit, drives switching relay for the digital output signal of described microprocessor is converted to control instruction
Described Helicopter AC power-supply system is controlled by device group (38).
Helicopter AC power-supply system the most according to claim 2 detection device, it is characterised in that
The outfan of described industrial computer (33) connects analog output card (36), and described analog output card (36) connects
Test advertiser (37), described test advertiser (37) generates exchange under the driving of described analog output card (36)
Power supply simulated failure signal, described alternating current power supply simulated failure signal is through going straight up to described in the input extremely of described switching relay group (38)
Machine AC power supply system is to carry out error protection detection.
Helicopter AC power-supply system the most according to claim 2 detection device, it is characterised in that
It is provided with dragging platform operation monitoring module (332) in described industrial computer (33), is used for driving described dragging system (10) to work
And described dragging system (10) is carried out on-line monitoring.
Helicopter AC power-supply system the most according to claim 5 detection device, it is characterised in that
Described dragging system (10) includes arrangements for speed regulation (11), dragging motor (12), shaft joint (13) and the speedup being sequentially connected with
Case (14), described arrangements for speed regulation (11) receive described industrial computer (33) instruction works so that drive described dragging motor (12),
Described shaft joint (13) and described gearbox (14) output, also include the lubrication that described dragging system (10) carries out cooling and lubricating
Cooling system (15).
Helicopter AC power-supply system the most according to claim 2 detection device, it is characterised in that
Load dispatch monitoring module (333) it is provided with, for the most right according to test request in described industrial computer (33)
Described load system (20) carries out Load-unload control and described load system (20) is carried out on-line monitoring.
Helicopter AC power-supply system the most according to claim 7 detection device, it is characterised in that
Described load system (20) includes being connected with alternating current generator outfan and various electrical equipments on helicopter simulating
First load cabinet and alternating current generator pilot exciter are connected to test the second load cabinet of described pilot exciter load capacity.
Helicopter AC power-supply system the most according to claim 2 detection device, it is characterised in that
Described signal sampling input block (31), based on subsection detecting technique, drives according to the range interval being sampled residing for signal
Corresponding sensor sample is to meet the sampling precision in each interval.
Helicopter AC power-supply system the most according to claim 9 detection device, it is characterised in that
Metering module (334) it is provided with, for the acquisition precision of sensor is implemented metering, according to metering in described industrial computer (33)
As a result, the configuration parameter of corresponding sampling channel is revised.
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| CN201610396641.2A CN106093806B (en) | 2016-06-07 | 2016-06-07 | Helicopter AC power-supply system detection device |
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Cited By (4)
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| CN107748339A (en) * | 2017-11-29 | 2018-03-02 | 成都飞亚航空设备应用研究所有限公司 | A kind of power of alterating and direct current multi-function test stand |
| CN108226815A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of airborne AC power quality real-time monitoring system |
| CN109946508A (en) * | 2019-04-04 | 2019-06-28 | 乳源东阳光机械有限公司 | A kind of portable type current detection recording device |
| CN111103478A (en) * | 2019-11-22 | 2020-05-05 | 中国人民解放军总参谋部第六十研究所 | Steering wheel automatic checkout equipment for unmanned helicopter |
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| CN108226815A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of airborne AC power quality real-time monitoring system |
| CN107748339A (en) * | 2017-11-29 | 2018-03-02 | 成都飞亚航空设备应用研究所有限公司 | A kind of power of alterating and direct current multi-function test stand |
| CN109946508A (en) * | 2019-04-04 | 2019-06-28 | 乳源东阳光机械有限公司 | A kind of portable type current detection recording device |
| CN111103478A (en) * | 2019-11-22 | 2020-05-05 | 中国人民解放军总参谋部第六十研究所 | Steering wheel automatic checkout equipment for unmanned helicopter |
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