CN106782024A - A kind of many electric mixed dynamic system teaching experiment platforms and teaching method - Google Patents
A kind of many electric mixed dynamic system teaching experiment platforms and teaching method Download PDFInfo
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Abstract
A kind of many electric mixed dynamic system teaching experiment platforms disclosed by the invention and teaching method, are related to many electric mixed dynamic system teaching experiment platforms and teaching method for SUAV, belong to many electricity blended instruction technical field of experiment equipment.A kind of many electric mixed dynamic system teaching experiment platforms of the invention, including solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system, energy management system, power control unit, dynamometer and control object.The teaching and experiment method realized based on a kind of many electric mixed dynamic system teaching experiment platforms is also disclosed, comprises the following steps：Optional solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system independently carry out the cognitive experiment of key property；Carry out many electric mixed dynamic system teaching experiments.The present invention can intuitively show the operation principle and basic structure of many electric mixed dynamic systems of SUAV, and convenient teaching is conducive to promoting, reduces expenses.
Description
Technical field
It is more particularly to a kind of for SUAV the present invention relates to many electricity blended instruction technical field of experiment equipment
Many electric mixed dynamic system teaching experiment platforms and teaching method.Described many electric mixed dynamic systems are dynamic including solar cell
Force system, hydrogen fuel cell dynamical system and battery dynamical system.
Background technology
New energy hybrid electrically unmanned plane is to use novel energy, such as battery, solar energy and Hydrogen Energy, and utilizes energy
Reforming unit, such as solar cell and fuel cell, electric energy that new energy is converted into provide power unmanned plane (UAVs,
Unmanned Aerial Vehicles).Compared with using conventional fossil fuel unmanned plane, the prime energy of use is green
The energy, its energy resource system power density is higher, and the power type for utilizing is more, environmentally safe, and it is all converted into electricity
Power can be provided, with zero-emission, low noise, infrared signal not substantially, the advantage such as good concealment, while when there is overlength to navigate
Potentiality, so as to be more suitable for performing the tasks such as information gathering, patrol monitoring and long-range scouting.But, new energy also respectively has deficiency, such as
Conversion efficiency of solar cell is low, fuel battery power density is low, storage battery energy density is low, therefore in order to maximize favourable factors and minimize unfavourable ones, makes
Each energy difference electrical characteristics have complementary advantages, and increase whole efficiency and service life, it is necessary to each energy is mixed.It is single with using
The unmanned plane (such as solar energy unmanned plane) of one energy is compared, and hybrid power system avoids the limit Design of structure, and pneumatic
The larger problem of elasticity, so that its application field is more extensive, low latitude that can be in troposphere uses.Therefore, hybrid power system
System is increasingly becoming the focus of domestic and international research, also for the development of future super long endurance unmanned aircraft provides direction.
Technique Popularizing, education are leading, are promoted as new energy hybrid electrically unmanned air vehicle technique, and current some schools have opened
If correlated curriculum, but generally lack experimental facilities, although what is had is in kind as displaying using new energy hybrid electrically unmanned plane, but
It is not belonging to teaching equipment.
The content of the invention
For the dynamical system Platform of Experimental Teaching lacked in the prior art dedicated for SUAV.The present invention will be solved
Technical problem certainly is to provide a kind of many electric mixed dynamic system teaching experiment platforms, can intuitively show that SUAV is used
The operation principle and basic structure of many electric mixed dynamic systems, convenient teaching are conducive to promoting, and reduce expenses.Described electricity more
Hybrid power system includes solar cell dynamical system, hydrogen fuel cell dynamical system and battery dynamical system.This experiment
Platform needs to select the principle and structured teaching of single energy source and power, or fusion to get up to carry out many electricity and mix according to teaching experiment purpose
Close the principle and structured teaching of dynamical system.Invention additionally discloses based on a kind of many electric mixed dynamic system teaching experiment platform realities
Existing teaching and experiment method.
The purpose of the present invention is achieved through the following technical solutions：
A kind of many electric mixed dynamic system teaching experiment platforms disclosed by the invention, including solar cell dynamical system,
Hydrogen fuel cell dynamical system, battery dynamical system, energy management system, power control unit, dynamometer and control object.
Described control object includes electron speed regulator, motor and propeller.Solar cell dynamical system, hydrogen fuel cell dynamical system
System and battery dynamical system are used to provide power for unmanned plane；There is energy control method in energy management system, for controlling
Make the output of each energy；Power control unit be used for feedback compensation control object state and record the output of each energy voltage,
The numerical value of electric current and power and dynamometer；Dynamometer is used to measure the pulling force of propeller.
Solar cell is mainly the device that luminous energy is converted directly into electric energy by photoelectric effect, generally by crystalline silicon too
Positive cell piece or thin film solar cell sheet are constituted.The power output of solar cell is relevant with output voltage, in order that the sun
Energy battery is with maximum power output, it is necessary to maximum power point follower (Maximum Power Point Tracking, MPPT)
Regulation output voltage.Solar power generation has sufficient spatter property, absolute security, the relative popularity of resource and abundance
Advantage not available for other conventional energy resources such as property, longevity and maintainability, but also there is a problem of in practical application it is a lot,
One of major defect is that the photoelectric transformation efficiency of solar battery array is too low.
Solar cell dynamical system includes solar panel, electronic load, light intensity meter, inclinator and host computer, too
Positive energy battery is connected with electronic load, and host computer is connected with electronic load, and solar panel is converted solar energy into electrical energy, electricity
The electric energy that sub- load consumption solar cell is produced, host computer is used for adjusting electronic load and preserves data, and light intensity meter measurement is real
The angle on the intensity of illumination of solar panel vertical direction when testing, inclinator measurement solar panel and ground.Realize
Solar cell dynamical system characteristic cognition teaching experiment purpose：Measure electric current when different angles, different shading rate,
Voltage and intensity of illumination, and VA characteristic curve and peak power curve etc. are drawn, in order to understand the electricity of solar cell
Pond characteristic.
Hydrogen fuel cell is the generating that a kind of chemical energy that will be present among fuel and oxidant is converted into electric energy
Device, mainly constituting by electrode, electrolyte membrance and current-collector.Other fuel cell need to include reactant supply system,
The accessory systems such as heat-extraction system, drainage system and electrical property control system could work.Fuel battery energy metric density is high, efficiency
It is high, pollute it is small, operate steadily, but power density is low, reaches the rated power time more long.
Hydrogen fuel cell dynamical system including hydrogen storage bottle, flowmeter, h2 fuel cell stack, electronic load and host computer etc.,
By flowmeter incoming fuel battery pile, battery pile is connected hydrogen in hydrogen storage bottle with electronic load, host computer connection Electronic Negative
Carry and flowmeter.Oxidant is reacted in a fuel cell stack with reducing agent, and chemical energy is converted into electric energy, and electronic load consumption is produced
Raw electric energy, the data on flows of host computer recording flowmeter and the electric current of electronic load, voltage, that is, realize hydrogen fuel cell power
System performance cognition teaching experiment purpose：VA characteristic curve and voltage-power curve are drawn by the data for recording, in order to
Understand the battery behavior of hydrogen fuel cell.
Battery is the TRT that chemical energy is converted into electric energy, is the battery by rechargeable design, by can
Inverse chemical reaction is realized recharging, and is generally made up of minus plate, positive plate and electrolyte.Battery have power density it is high,
Output power, can fast charging and discharging, the advantages of charge efficiency is high, but energy density is small.The preferred lithium battery of described battery.
Battery dynamical system includes battery, electronic load, host computer and charger, and battery will first with filling before
Be full of for accumulator electric-quantity by electrical equipment, and then battery is discharged, when dump energy (State of Charge, SOC) is less than
During a certain value, represent battery discharging and finish, data are recorded by host computer, that is, realize that battery dynamical system characteristic is cognitive
Teaching experiment purpose：The VA characteristic curve of battery is drawn, to understand the battery behavior of battery；Use different electric discharge times
Rate is discharged, and observes the change of accumulator capacity under different discharge-rates.The preferred lithium battery of described battery.
Many electric mixed dynamic systems include solar cell dynamical system, hydrogen fuel cell dynamical system, battery power
System, energy management system, power set etc..Power set are by electron speed regulator, motor, propeller, dynamometer and power control
Unit composition processed, electron speed regulator regulation motor rotating speed, motor drives propeller rotational, dynamometer to measure the thrust of propeller,
Power control unit is fed back to, to realize the regulation to rotating speed.Energy management system is additionally operable to the flight according to unmanned plane
Section selects corresponding dynamical system, is exported with each energy is recorded by the state of power control unit feedback compensation control object
Voltage, electric current and power and dynamometer numerical value, energy control system according to experimental teaching purpose and flight profile, mission profile need choosing
Select following three kinds of power drive modes：(1) solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system
Unification and independence found drive pattern；(2) solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system group two-by-two
Close drive pattern；(3) solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system drive mould jointly
Formula.Realize many electric mixed dynamic system teaching experiment purposes：Suitable dynamical system is selected by different flight profile, mission profiles, quickly
Required when the power demand and boat long that meet unmanned plane during flying.
Invention additionally discloses the teaching and experiment method realized based on a kind of many electric mixed dynamic system teaching experiment platforms, bag
Include following steps：
Step one：Solar cell dynamical system, hydrogen fuel cell dynamical system, storage in optional many electric mixed dynamic systems
Cell power systems independently carry out the cognitive experiment of key property.
Step 1.1：During the cognition experiment of solar cell dynamical system key property, host computer and electronic load are opened, too
Positive energy cell wing is just to the sun, and solar panel keeps certain angle with ground, and Electronic Negative is adjusted by host computer
The voltage of load to change the electric current of solar panel generation, and record current and voltage numerical value, while being measured with light intensity meter
Go out the intensity of illumination with solar panel vertical direction, magnitude of voltage is one by the open-circuit voltage of zero change to solar panel
Group data, after having measured one group of data, change the angle of solar panel and ground, continue to measure electric current, voltage and light intensity,
Then VA characteristic curve and voltage-power curve are drawn, different angles is analyzed to solar cell peak power, peak power
When voltage, power density and conversion efficiency influence；Same measures electric current, voltage, intensity of illumination in a certain shading rate,
Then change shading rate to continue to measure, then draw VA characteristic curve and voltage-power curve, analyze different shading rates to too
The influence of voltage, power density and conversion efficiency when positive energy battery peak power, peak power；Adjust negative by electronic load
Spline smoothing is carried, the solar cell response time is measured.
Step 1.2：During the cognition experiment of hydrogen fuel cell dynamical system key property, host computer and electronic load are opened, by
Host computer is reacted into h2 fuel cell stack by flowmeter monitoring hydrogen flow rate, hydrogen with the oxygen in air, is produced
Electric current, measures electric current, the voltage of fuel cell, draws VA characteristic curve, understands the battery behavior of hydrogen fuel cell, finds most
It is high-power；By electronic load regulating load Spline smoothing, the hydrogen fuel cell response time is measured.
Step 1.3：During the cognition experiment of battery dynamical system key property, battery charging experiment is carried out first, will store
Battery is connected with charger, and selection charge mode is charged, and is then discharged with different discharge currents, measurement electric current,
Voltage and battery capacity, the discharge time under also different discharge currents, draw VA characteristic curve, analyze different discharge currents
Influence to accumulator capacity, by electronic load regulating load Spline smoothing, measures the battery response time.
Step 2：Carry out many electric mixed dynamic system teaching experiments.
Suitable dynamical system is selected by different flight profile, mission profiles, the power demand and boat long of unmanned plane during flying is quickly met
Shi Yaoqiu, that is, complete many electric mixed dynamic system teaching experiments.
Beneficial effect：
A kind of many electric mixed dynamic system teaching experiment platforms disclosed by the invention and teaching method, it is former using system engineering
Reason, according to methods such as fuzzy logic or optimum controls, solar energy, hydrogen fuel cell and battery equal energy source is merged,
It is common to drive unmanned plane operation.Multiple energy resouce combination together, can intuitively be shown new energy unmanned plane by the teaching equipment
The operation principle and basic structure of dynamical system, while the Experiment of Principle of each energy resource system can also be carried out, convenient teaching, favorably
In popularization, reduce expenses.
Brief description of the drawings
Fig. 1 is solar cell key property cognition experimental system；
Fig. 2 is hydrogen fuel cell key property cognition experimental system；
Fig. 3 is battery key property cognition experimental system；
Fig. 4 is many electric mixed dynamic system experiment porch；
Fig. 5 is flow chart.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.Accompanying drawing is schematic diagram, and the present invention is only illustrated in a schematic way
Basic structure, therefore only show the composition relevant with the present invention.
Fig. 5 is flow chart, first carries out the experiment of solar cell key property, hydrogen fuel cell key property and battery base
This performance test, this battery selection lithium battery, has a basic insight to the battery behavior of three kinds of batteries, then carries out
Many electric mixed dynamic system experiments.
Fig. 1 is solar cell key property cognition experimental system, and solar panel is connected with electronic load, Electronic Negative
Carry by PC control, light intensity meter is used for intensity of illumination during measurement experiment, inclinator measurement solar panel and ground
Angle.
During work, host computer and electronic load are first opened, solar panel is just to the sun, and solar panel and ground
Face keeps certain angle, and it is big to change the electric current of solar panel generation that the voltage of electronic load is adjusted by host computer
It is small, and record current and voltage numerical value, while measure the intensity of illumination measured with solar panel vertical direction with light intensity,
Magnitude of voltage is one group of data by the open-circuit voltage of zero change to solar panel, after having measured one group of data, changes solar energy
Cell wing and the angle on ground, continue to measure electric current, voltage and light intensity, then draw VA characteristic curve and voltage-power is bent
Line, the shadow of voltage, power density and conversion efficiency when analyzing different angles to solar cell peak power, peak power
Ring；Same holding solar panel and ground angle are 0 °, and electric current, voltage, intensity of illumination are measured in a certain shading rate,
Then change shading rate to continue to measure, then draw VA characteristic curve and voltage-power curve, analyze different shading rates to too
The influence of voltage, power density and conversion efficiency when positive energy battery peak power, peak power；Adjust negative by electronic load
Spline smoothing is carried, the solar cell response time is measured.
Fig. 2 is hydrogen fuel cell key property cognition experimental system, and hydrogen storage bottle is connected to hydrogen fuel cell by flowmeter
On heap, hydrogen flowing quantity is monitored by flowmeter, and hydrogen flowing quantity, fuel cell current and voltage are recorded by host computer.During work by
Host computer is reacted into h2 fuel cell stack by flowmeter monitoring hydrogen flow rate, hydrogen with the oxygen in air, is produced
Electric current, constantly changes the voltage of electronic load, measures electric current, the voltage of fuel cell, draws VA characteristic curve, understands hydrogen combustion
Expect the battery behavior of battery, find peak power；By electronic load regulating load Spline smoothing, hydrogen fuel cell battery is measured
Response time.
Fig. 3 is battery key property cognition experimental system, and preferably 3s lithium batteries are tested and carry out first lithium battery and fill
Electricity experiment；Then discharged with different discharge currents, measurement electric current, voltage and battery capacity, also different discharge currents
Under discharge time, draw VA characteristic curve, influence of the different discharge currents to lithium battery capacity is analyzed, by electronic load
Regulating load Spline smoothing, measures the lithium battery response time.Compare three kinds of response times of battery, it is known that the lithium battery response time
It is most short, it is fastest, therefore should be powered with lithium battery in unmanned plane takeoff phase.
Fig. 4 is many electric mixed dynamic system experiment porch, and solar cell is connected by MPPT with energy management system, lithium
Battery is directly connected with energy management system, and hydrogen storage bottle is connected with fuel cell pack, energy management system and electron speed regulator phase
Even, electron speed regulator is connected with motor, motor connection propeller, drives unmanned plane motion.Recognized by above-mentioned solar cell
Know that experiment can obtain the peak power of solar cell, setting MPPT makes solar cell with maximum power output；Fired by hydrogen
The cognitive experiment of material battery can obtain the peak power of hydrogen fuel cell, set it with maximum power output.Energy management algorithm is burnt
Enter energy management controller, and can according to circumstances modify.
During work, first simulate takeoff phase, be powered by lithium battery, but lithium battery power-on time no more than at this
Discharge time under electric current, in case lithium battery is crossed putting, damage battery.After taking off, it is powered by solar cell, energy management
System judges whether solar cell can fully meet the aggregate demand power of unmanned plane according to energy management method.If can not
Meet demand, not enough power is provided by lithium battery, provided by hydrogen fuel cell after lithium battery dump energy is less than a certain value
Not enough power.If solar cell can meet power demand, power is all provided by solar cell.If solar energy
Battery energy power is more than power demand, checks electric quantity of lithium battery, if lithium battery is not full power state, solar cell is unnecessary
Power is to lithium cell charging, if lithium battery is full electric, the unmanned plane power unnecessary by increasing power consumption.If solar-electricity
Pond can not meet the demand power of unmanned plane, and the electricity of lithium battery and the hydrogen of hydrogen fuel cell are exhausted, then should use up
Unmanned plane is set to land soon.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any real without departing from spirit of the invention
Matter and the change, modification, replacement made under principle, combine, simplify, should be equivalent substitute mode, being included in the present invention
Protection domain within.
Claims (5)
1. a kind of many electric mixed dynamic system teaching experiment platforms, it is characterised in that：Fired including solar cell dynamical system, hydrogen
Material cell power systems, battery dynamical system, energy management system, power control unit, dynamometer and control object；It is described
Control object include electron speed regulator, motor and propeller；Solar cell dynamical system, hydrogen fuel cell dynamical system and
Battery dynamical system is used to provide power for unmanned plane；There is energy control method in energy management system, it is each for controlling
The output of the energy；Power control unit is used for the state of feedback compensation control object and records voltage, the electric current of each energy output
With power and the numerical value of dynamometer；Dynamometer is used to measure the pulling force of propeller.
2. a kind of many electric mixed dynamic system teaching experiment platforms according to claim 1, it is characterised in that：
Solar cell dynamical system includes solar panel, electronic load, light intensity meter, inclinator and host computer, solar energy
Battery is connected with electronic load, and host computer is connected with electronic load, and solar panel is converted solar energy into electrical energy, Electronic Negative
The electric energy that consumption solar cell is produced is carried, host computer is used for adjusting electronic load and preserves data, during light intensity meter measurement experiment
The angle on the intensity of illumination of solar panel vertical direction, inclinator measurement solar panel and ground；Realize the sun
Can cell power systems characteristic cognition teaching experiment purpose：Measure electric current, the voltage when different angles, different shading rates
And intensity of illumination, and VA characteristic curve and peak power curve etc. are drawn, the battery in order to understand solar cell is special
Property；
Hydrogen fuel cell dynamical system including hydrogen storage bottle, flowmeter, h2 fuel cell stack, electronic load and host computer etc., hydrogen storage
By flowmeter incoming fuel battery pile, battery pile is connected hydrogen in bottle with electronic load, host computer connect electronic load with
Flowmeter；Oxidant is reacted in a fuel cell stack with reducing agent, and chemical energy is converted into electric energy, and electronic load consumption is produced
Electric energy, the data on flows of host computer recording flowmeter and the electric current of electronic load, voltage, that is, realize hydrogen fuel cell dynamical system
Characteristic cognition teaching experiment purpose：VA characteristic curve and voltage-power curve are drawn by the data for recording, in order to understand
The battery behavior of hydrogen fuel cell；
Battery dynamical system includes battery, electronic load, host computer and charger, and battery will first use charger before
Accumulator electric-quantity is full of, then battery is discharged, when dump energy (State of Charge, SOC) is less than a certain
During value, represent battery discharging and finish, data are recorded by host computer, that is, realize the cognitive teaching of battery dynamical system characteristic
Experiment purpose：The VA characteristic curve of battery is drawn, to understand the battery behavior of battery；Entered using different discharge-rates
Row electric discharge, observes the change of accumulator capacity under different discharge-rates；
Many electric mixed dynamic systems include solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system,
Energy management system, power set etc.；Power set are by electron speed regulator, motor, propeller, dynamometer and power control unit
Composition, electron speed regulator regulation motor rotating speed, motor drives propeller rotational, and dynamometer measures the thrust of propeller, and its is anti-
Feed power control unit, to realize the regulation to rotating speed；Energy management system is additionally operable to be selected according to the flight profile, mission profile of unmanned plane
Corresponding dynamical system is selected, by state and the electricity for recording each energy output of power control unit feedback compensation control object
The numerical value of pressure, electric current and power and dynamometer, energy control system needs under selection according to experimental teaching purpose and flight profile, mission profile
State three kinds of power drive modes：(1) solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system unification and independence
Vertical drive pattern；(2) solar cell dynamical system, hydrogen fuel cell dynamical system, battery dynamical system combination of two are driven
Dynamic model formula；(3) solar cell dynamical system, hydrogen fuel cell dynamical system, the common drive pattern of battery dynamical system；I.e.
Realize many electric mixed dynamic system teaching experiment purposes：Suitable dynamical system is selected by different flight profile, mission profiles, it is quick to meet
Required when the power demand of unmanned plane during flying and boat long.
3. a kind of many electric mixed dynamic system teaching experiment platforms according to claim 2, it is characterised in that：Described storage
The preferred lithium battery of battery.
4. the teaching experiment side for being realized based on a kind of many electric mixed dynamic system teaching experiment platforms described in Claims 2 or 3
Method, it is characterised in that：Comprise the following steps,
Step one：Solar cell dynamical system, hydrogen fuel cell dynamical system, battery in optional many electric mixed dynamic systems
Dynamical system independently carries out the cognitive experiment of key property；
Step 1.1：During the cognition experiment of solar cell dynamical system key property, host computer and electronic load, solar energy are opened
Cell wing is just to the sun, and solar panel keeps certain angle with ground, and electronic load is adjusted by host computer
Voltage to change the electric current of solar panel generation, and record current and voltage numerical value, while measured with light intensity measure with
The intensity of illumination of solar panel vertical direction, magnitude of voltage is one group of number by the open-circuit voltage of zero change to solar panel
According to, after having measured one group of data, change the angle of solar panel and ground, continue to measure electric current, voltage and light intensity, then
VA characteristic curve and voltage-power curve are drawn, when analyzing different angles to solar cell peak power, peak power
The influence of voltage, power density and conversion efficiency；Same measures electric current, voltage, intensity of illumination in a certain shading rate, then
Change shading rate to continue to measure, then draw VA characteristic curve and voltage-power curve, analyze different shading rates to solar energy
The influence of voltage, power density and conversion efficiency when battery peak power, peak power；By electronic load regulating load rank
Transition, measures the solar cell response time；
Step 1.2：During the cognition experiment of hydrogen fuel cell dynamical system key property, host computer and electronic load are opened, by upper
Machine is reacted into h2 fuel cell stack by flowmeter monitoring hydrogen flow rate, hydrogen with the oxygen in air, produces electric current,
Electric current, the voltage of fuel cell are measured, VA characteristic curve is drawn, the battery behavior of hydrogen fuel cell is understood, maximum work is found
Rate；By electronic load regulating load Spline smoothing, the hydrogen fuel cell response time is measured；
Step 1.3：During the cognition experiment of battery dynamical system key property, battery charging experiment is carried out first, by battery
It is connected with charger, selection charge mode is charged, and is then discharged with different discharge currents, measurement electric current, voltage
And battery capacity, the discharge time under also different discharge currents, VA characteristic curve is drawn, different discharge currents are analyzed to storing
The influence of battery capacity, by electronic load regulating load Spline smoothing, measures the battery response time；
Step 2：Carry out many electric mixed dynamic system teaching experiments；
Described many electric mixed dynamic system teaching experiments refer to solar cell dynamical system, hydrogen fuel cell dynamical system, store
Cell power systems combination of two drive pattern or solar cell dynamical system, hydrogen fuel cell dynamical system, battery are dynamic
The common drive pattern of Force system；
Suitable dynamical system is selected by different flight profile, mission profiles, is wanted when the power demand and boat long that quickly meet unmanned plane during flying
Ask, that is, complete many electric mixed dynamic system teaching experiments.
5. teaching and experiment method according to claim 4, it is characterised in that：The preferred lithium battery of described battery.
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| CN107390128A (en) * | 2017-07-12 | 2017-11-24 | 北京理工大学 | A kind of fuel cell battery hybrid system energy management test platform and method |
| CN108205111A (en) * | 2017-12-19 | 2018-06-26 | 佛山科学技术学院 | A kind of hydrogen energy source Fuel cell electric test platform |
| CN108280267A (en) * | 2017-12-29 | 2018-07-13 | 中国电子科技集团公司第二十七研究所 | A kind of parameter optimization method of the uninterrupted flight unmanned plane of hand throwing type |
| CN108280267B (en) * | 2017-12-29 | 2021-03-23 | 中国电子科技集团公司第二十七研究所 | Parameter optimization method for hand-throwing type uninterrupted flying unmanned aerial vehicle |
| CN109000737A (en) * | 2018-09-21 | 2018-12-14 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transmission line of electricity monitoring sensor solar energy-battery group test method |
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