CN110082060A - A kind of plant protection unmanned aerial vehicle wind resistance test equipment and method - Google Patents
A kind of plant protection unmanned aerial vehicle wind resistance test equipment and method Download PDFInfo
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- CN110082060A CN110082060A CN201910441871.XA CN201910441871A CN110082060A CN 110082060 A CN110082060 A CN 110082060A CN 201910441871 A CN201910441871 A CN 201910441871A CN 110082060 A CN110082060 A CN 110082060A
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- wind
- aerial vehicle
- unmanned aerial
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Abstract
The invention discloses a kind of plant protection unmanned aerial vehicle wind resistance test equipments, wind equipment is made by three groups and a set of wind measuring system forms, the wind equipment of making is made of axial flow fan with adjustable moving blades, wind guiding mechanism, hoistable platform, powering shelf, frequency-conversion control cabinet, the axial flow fan with adjustable moving blades is mounted on hoistable platform, the wind guiding mechanism is mounted on the air outlet and air inlet of axial flow fan with adjustable moving blades, the axial flow fan with adjustable moving blades and hoistable platform are powered by powering shelf, and the axial flow fan with adjustable moving blades is controlled by frequency-conversion control cabinet；The wind measuring system is formed by catching wind net and anemobiagraph.The present invention is the plant protection unmanned aerial vehicle wind resistance detection system based on frequency conversion control technique, pass through frequency conversion, adjust the revolving speed of axial flow blower, it obtains testing required ideal wind field, establish wind-field model, it obtains meeting testing and needs wind field region, test with realizing plant protection unmanned aerial vehicle wind resistance fast, economical.
Description
Technical field
The present invention relates to a kind of plant protection unmanned aerial vehicle wind resistance test equipment and methods, belong to agricultural aviation technology neck
Domain.
Background technique
The wind resistance test request of unmanned plane be based on aircraft in the environment of different brackets wind position control and posture
The thinking of control.Currently, test method has unilateral extension weight test, simulation of wind test and wind tunnel test etc..Unilateral extension weight
Test is to hang up corresponding weight in certain side horn of aircraft and make a flight test, and simulates aircraft in the feelings by gust disturbance
Flying scene under condition.Such test method is relatively rough, test result extremely inaccuracy and easy air crash.Simulation of wind test is imitative
True means introduce wind field data in flight and course line calculate and are tested, there is wind and calm two kinds of rings by comparing
Border is got off the plane position and course-line deviation, and the quality of the wind resistance of tested unmanned plane is assessed.Simulation of wind test be it is current nobody
It is a kind of using more method in machine Study of Wind-Resistant Behavior, but since wind field type is complicated, modeling wind field and practical wind field have very
Big difference, wind resistance test result precision be not high.Wind tunnel test is also one of them very important means, although its
Measuring accuracy is high, but wind tunnel test equipment construction cost and operating cost are excessively high, for plant protection unmanned aerial vehicle service check
Cost performance is too low, does not meet the needs of agricultural industry application；Also useful fan forms one of air curtain, but the wind field that fan is formed is not
Enough stable and uniforms especially form sinuous flow vulnerable to the interference of natural wind in outdoor；Also have borrow natural conditions strong wind weather into
Row test, this to be limited by natural conditions, the demand for the performance test that is not accordant to the old routine.In conclusion these means of testing
It is not result inaccuracy, is exactly that operating cost is excessively high, does not meet the demand of product traditional performance inspection.For this reason, it may be necessary to design phase
The technical solution answered, which is given, to be solved.
Summary of the invention
The present invention is the plant protection unmanned aerial vehicle wind resistance detection system based on frequency conversion control technique, passes through frequency control tune
The revolving speed of bearing flow fan obtains testing required ideal wind field, establishes wind-field model, obtains satisfaction test and needs wind field area
Domain is tested, meets actual operation requirements with realizing plant protection unmanned aerial vehicle wind resistance fast, economical.
To solve the above problems, the technical solution used in the present invention is as follows:
A kind of plant protection unmanned aerial vehicle wind resistance test equipment makes wind devices, a set of wind measuring system and the platform that takes off by three groups
Composition, the wind devices of making are by axial flow fan with adjustable moving blades, inlet and outlet ventilating duct, hydraulic elevating platform, powering shelf, frequency control
Cabinet composition.The axial flow fan with adjustable moving blades is arranged on hydraulic elevating platform；The ventilating duct is arranged in Blade Adjustable Axial stream
At the air inlet and air outlet of blower；The axial flow fan with adjustable moving blades, hydraulic elevating platform and frequency-conversion control cabinet are by power supply
Cabinet power supply；The axial flow fan with adjustable moving blades revolving speed is controlled by frequency-conversion control cabinet；
The wind measuring system is formed by catching wind net, hot-wire array instrument and Gill wind speed instrument；The platform that takes off is aluminum profile
The cuboid table built；The hydraulic elevating platform is by pedestal, hydraulic oil container, hydraulic pump, hydraulic pump control device, hydraulic pump electricity
The composition such as case, lifting platform strut, hydraulic cylinder, hydraulic cylinder mounting rack, approach switch sensor, hydraulic elevator platform table top.
As an improvement of the above technical solution, the axial flow fan with adjustable moving blades specifically includes that collector, air inlet rectification
Net, fan blade, motor, electric machine support, wind-guiding grid, air outlet rectification grid, base plate composition.
As an improvement of the above technical solution, the collector is horn-like structure, and its center and fan blade rotate
Central coaxial；The air inlet screens are spirally distributed at fan inlet, and are fixed on by welding or being bolted
Collector edge.
As an improvement of the above technical solution, the electric machine support is parallel to each other by two pieces vertical placement steel plate and one piece
Horizontal crosswise is welded, and three pieces of steel plate edges are welded to connect with blower inner wall；The motor is set to electric machine support
On；Fan blade is bolted to connection with motor output shaft.
As an improvement of the above technical solution, the wind-guiding grid is made of gradual shrinkage air guide member with wind blade；It is described
Wind blade and gradual shrinkage air guide member and blower inner wall are welded to connect, and are evenly distributed on interior machine inner wall circumference.
As an improvement of the above technical solution, the air outlet rectification square grid by equally distributed crosswise and is erected
It sets steel plate to be connected with each other, and steel plate is connect with blower inner wall.
As an improvement of the above technical solution, the base plate is welded to connect by stainless steel square tube head and the tail, and passes through L-type
Steel plate, bolt and blower connect.
As an improvement of the above technical solution, the anemobiagraph includes: multiple three axis air velocity transducers, wireless data transmission
With data collecting and processing unit.
Specifically, plant protection unmanned aerial vehicle wind resistance test method is as follows:
S1: the air speed data of each node of wind net is caught with the test of hot-wire array instrument；
S1: natural wind speed is monitored with Gill wind speed instrument；
S2: according to existing wind-field model, the wind field wind speed region that test needs is found out；
S3: launching platform is placed in test area；
S4: tested plant protection unmanned aerial vehicle is placed on launching platform；
S5: opening axial flow fan with adjustable moving blades and is adjusted to corresponding frequencies, the wind speed in testing experiment region, and confirmation wind speed meets
Test needs；
S6: operation plant protection unmanned aerial vehicle takes off；
S7: the hovering of plant protection unmanned aerial vehicle is kept, and axial flow fan with adjustable moving blades is increased to the height that test needs；
S8: operation plant protection unmanned aerial vehicle flies to corresponding height, and is stopped in test wind field region；
S9: operation plant protection unmanned aerial vehicle is in movements such as the region wind advance, retrogressing, Zuo Fei, right winged, up and down；
S10: the hovering of plant protection unmanned aerial vehicle is kept, axial flow fan with adjustable moving blades is reduced as far as possible；
S11: operation plant protection unmanned aerial vehicle makes plant protection unmanned aerial vehicle drop to launching platform.
Compared with prior art, implementation result of the invention is as follows by the present invention:
The present invention can accurately test the wind resistance grade of aircraft, reduce testing cost, economical, conveniently, safely, accurately.
Detailed description of the invention
Fig. 1 is plant protection unmanned aerial vehicle wind resistance test equipment schematic perspective view of the present invention.
Fig. 2 is wind measuring system schematic diagram of the present invention.
Fig. 3 is axial flow fan with adjustable moving blades structural schematic diagram of the present invention.
Fig. 4 is that air inlet screens of the present invention, wind-guiding grid and air outlet rectify grid schematic diagram.
Fig. 5 is hydraulic elevator platform structural schematic diagram of the present invention.
Specific embodiment
Illustrate the contents of the present invention below in conjunction with specific embodiments.
It is as shown in Figures 1 to 5: for plant protection unmanned aerial vehicle wind resistance test equipment overall structure of the present invention and key
Block diagram.
Embodiment: the plant protection unmanned aerial vehicle wind resistance test equipment makes wind equipment by three groups, the platform that takes off forms.
Wind equipment is made by axial flow fan with adjustable moving blades 1, inlet and outlet ventilating duct 2, hydraulic elevating platform 3, powering shelf 4, frequency conversion
Control cabinet 5 forms；Axial flow fan with adjustable moving blades 1 is arranged on hydraulic elevating platform 3；The setting of inlet and outlet ventilating duct 2 can in movable vane
It adjusts at the air inlet and air outlet of axial flow blower 1；Axial flow fan with adjustable moving blades 1, hydraulic elevating platform 3 and frequency-conversion control cabinet 5 are equal
It is powered by powering shelf 4；1 revolving speed of axial flow fan with adjustable moving blades is controlled by frequency-conversion control cabinet 5；The platform that takes off is built rectangular for aluminum profile
Object table table；Hydraulic elevating platform 3 by pedestal 31, hydraulic oil container 32, hydraulic pump 33, hydraulic pump control device 34, hydraulic pump electronic box 35,
The groups such as lifting platform strut 36, hydraulic cylinder 37, hydraulic cylinder mounting rack 38, approach switch sensor 39, hydraulic elevator platform table top 310
At.
Axial flow fan with adjustable moving blades 1 specifically includes that 11 air inlet screens 12 of collector, fan blade 13, motor 14, electricity
Machine support 141, wind-guiding grid 15, air outlet rectification square grid 16, base plate 17 form.
Specifically, wherein collector 11 is horn-like structure, and its center and 13 rotation center of fan blade are coaxial；Into
Air port screens 12 are spirally distributed at fan inlet, and are fixed on 11 edge of collector by welding or being bolted.
And the vertical placement steel plate that electric machine support 141 is parallel to each other by two pieces is welded with one piece of horizontal crosswise, three blocks of steel plates
Edge is welded to connect with blower inner wall, and motor 14 is set on electric machine support 141, fan blade 13 and motor output shaft 142
It is bolted to connection.Wind-guiding grid 15 is made of gradual shrinkage air guide member 151 and wind blade 152；Wind blade 152 with gradually
Miniature air guide member 151 and blower inner wall are welded to connect, and are evenly distributed on interior machine inner wall circumference.Air outlet rectifies rectangular grid
Lattice 16 are connected with each other by equally distributed crosswise with steel plate is vertically arranged, and steel plate is connect with blower inner wall.
More specifically, base plate 17 is welded to connect by stainless steel square tube head and the tail, and pass through L-type steel plate, bolt and blower
Connection.Anemobiagraph includes: multiple three axis air velocity transducers 81, wireless data transmission and data collecting and processing unit 82.
Axial flow fan with adjustable moving blades rotates manufacture wind field by impeller, by changing 5 output frequency of frequency-conversion control cabinet, adjustment
1 revolving speed of axial flow fan with adjustable moving blades；Axial flow fan with adjustable moving blades 1 is mounted on hydraulic elevating platform 3, axial flow fan with adjustable moving blades
The wind speed band of 1 manufacture can move up and down adjustment height with hoistable platform.Wind resistance test macro provided by the invention, utilizes change
Frequency device adjusts the wheel speed of axial flow fan with adjustable moving blades 1, and the wind field wind direction of manufacture is stablized, and wind speed band height is adjustable, and wind speed is equal
Even, adjustable, test method provided by the invention can accurately test the wind resistance grade of aircraft, reduce testing cost, economic, side
Just, accurately.
More specifically, the general structure schematic diagram of plant protection unmanned aerial vehicle wind resistance test macro uses as shown in Figure 1:
The operating structure of " frequency control+axial flow fan with adjustable moving blades ", by adjusting blade angle by blower all-the-time stable most efficiently
Rate point, realizes the translation of characteristic curve of fan, remains efficient operation during providing a kind of adjustment of blower for blower fan system
Means；Axial flow fan with adjustable moving blades 1 may be implemented under the conditions of fixed rotating speed, mechanical by changing axial flow fan with adjustable moving blades 1
The ability that can be converted to fluid dynamic energy avoids without changing system pipeline resistance and makees idle work, and air quantity is big, and wind direction is fixed,
Revolving speed is low, high-efficient, and air outlet sea land distribution is slower, saves the energy；Using the revolving speed of frequency conversion control technique adjustment blower, not only
The modeling wind field that variable wind speed can be manufactured, can also offset natural wind field to the coupling effect of modeling wind field；Utilize hydraulic lifting
Platform 3 drives axial flow fan with adjustable moving blades 1 to move up and down, and reaches what wind speed band was adjusted with plant protection unmanned aerial vehicle normal operation height
Purpose.
It is as shown in Figure 2: wind measuring system schematic diagram of the present invention.
Embodiment: wind measuring system is formed by catching wind net, hot-wire array instrument and Gill wind speed instrument；Anemobiagraph includes: multiple
Three axis air velocity transducers, wireless data transmission and data collecting and processing unit.Using catch wind net and hot-wire array instrument measurement wind
The wind speed profile of each node of machine wind field is changed by triple axle anemobiagraph real-time detection natural environment wind speed, finds blower wind
The rule that field distribution rule changes with natural wind speed obtains testing required ideal wind field, establishes wind-field model.It is utilized when test
It catches wind net and anemobiagraph is quickly found out the region for meeting test requirements document under natural environment, launching platform is placed on corresponding position
Set, test that corresponding wind speed gets off the plane take off, can the flare maneuvers such as side flies, advance, retreat, landing normally complete, observation flies
Row posture tests its positioning accuracy, therefore, it is determined that aircraft wind resistance grade.
Specifically, the plant protection unmanned aerial vehicle wind resistance test method is as follows:
S1: natural wind speed is tested with anemobiagraph；
S2: according to existing wind-field model, the wind field wind speed region that test needs is found out；
S3: launching platform is placed in test area；
S4: tested plant protection unmanned aerial vehicle is placed on launching platform；
S5: opening axial flow fan with adjustable moving blades and is adjusted to corresponding frequencies, the wind speed in testing experiment region, and confirmation wind speed meets
Test needs；
S6: operation plant protection unmanned aerial vehicle takes off；
S7: the hovering of plant protection unmanned aerial vehicle is kept, and axial flow fan with adjustable moving blades is increased to the height that test needs；
S8: operation plant protection unmanned aerial vehicle flies to corresponding height, and is stopped in test wind field region；
S9: operation plant protection unmanned aerial vehicle is in movements such as the region wind advance, retrogressing, Zuo Fei, right winged, up and down；
S10: the hovering of plant protection unmanned aerial vehicle is kept, axial flow fan with adjustable moving blades is reduced as far as possible；
S11: operation plant protection unmanned aerial vehicle makes plant protection unmanned aerial vehicle drop to launching platform.
In summary: the present invention is the plant protection unmanned aerial vehicle wind resistance detection system based on frequency conversion control technique, is passed through
Frequency conversion adjusts the revolving speed of axial flow blower, obtains testing required ideal wind field, establishes wind-field model, obtains meeting test needs
Wind field region is tested, meets actual operation requirements with realizing plant protection unmanned aerial vehicle wind resistance fast, economical.
The foregoing is a detailed description of the present invention in conjunction with specific embodiments, and it cannot be said that the present invention is specifically real
It applies and is only limitted to these explanations.For those skilled in the art to which the present invention belongs, before not departing from present inventive concept
It puts, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the scope of protection of the invention.
Claims (9)
1. a kind of plant protection unmanned aerial vehicle wind resistance test equipment, it is characterised in that: make wind devices, a set of wind measuring system by three groups
With the platform composition that takes off；The wind devices of making are by axial flow fan with adjustable moving blades (1), inlet and outlet ventilating duct (2), hydraulic elevating platform
(3), powering shelf (4), frequency-conversion control cabinet (5) composition；The axial flow fan with adjustable moving blades (1) is arranged in hydraulic elevating platform (3)
On；The ventilating duct setting is at the air inlet and air outlet of axial flow fan with adjustable moving blades (1)；The axial flow fan with adjustable moving blades
(1), hydraulic elevating platform (3) and frequency-conversion control cabinet (5) are powered by powering shelf (4)；The axial flow fan with adjustable moving blades (1) turns
Speed is controlled by frequency-conversion control cabinet (5)；
The wind measuring system is formed by catching wind net (6), hot-wire array instrument (7) and Gill wind speed instrument (8), and the platform that takes off is aluminium
The cuboid table that profile is built；
The hydraulic elevating platform (3) is by pedestal (31), hydraulic oil container (32), hydraulic pump (33), hydraulic pump control device (34), liquid
Press pump electronic box (35), lifting platform strut (36), hydraulic cylinder (37), hydraulic cylinder mounting rack (38), approach switch sensor (39), liquid
Press the composition such as lifting platform table top (310).
2. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 1, it is characterised in that: the Blade Adjustable Axial
Flow fan mainly by: collector (11) air inlet screens (12), fan blade (13), motor (14), electric machine support (141),
Wind-guiding grid (15), air outlet rectification square grid (16), base plate (17) composition.
3. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 2, it is characterised in that: the collector (11)
For horn-like structure, and its center and fan blade (13) rotation center are coaxial；The air inlet screens (12) are in the shape of a spiral
It is distributed at fan inlet, and is fixed on collector (11) edge by welding or being bolted.
4. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 2, it is characterised in that: the electric machine support
(141) the vertical placement steel plate being parallel to each other by two pieces is welded with one piece of horizontal crosswise, three pieces of steel plate edges with
Blower inner wall is welded to connect；The motor (14) is set on electric machine support (141)；The fan blade (13) and motor export
Axis (142) is bolted to connection.
5. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 2, it is characterised in that: the wind-guiding grid
(15) it is made of gradual shrinkage air guide member (151) and wind blade (152)；The wind blade (152) and gradual shrinkage air guide member
(151) it is welded to connect with blower inner wall, and is evenly distributed on interior machine inner wall circumference.
6. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 2, it is characterised in that: the air outlet rectification
Square grid (16) is connected with each other by equally distributed crosswise with steel plate is vertically arranged, and steel plate is connect with blower inner wall.
7. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 2, it is characterised in that: the base plate
(17) it is welded to connect by stainless steel square tube head and the tail, and is connected by L-type steel plate, bolt and blower.
8. plant protection unmanned aerial vehicle wind resistance test equipment according to claim 1, it is characterised in that: the anemobiagraph packet
It includes: multiple three axis air velocity transducers (81), wireless data transmission and data collecting and processing unit (82).
9. -8 plant protection unmanned aerial vehicle wind resistance test method according to claim 1, it is characterised in that: the test method
It is as follows:
S1: the air speed data of each node of wind net is caught with the test of hot-wire array instrument；
S1: natural wind speed is monitored with Gill wind speed instrument；
S2: according to existing wind-field model, the wind field wind speed region that test needs is found out；
S3: launching platform (9) is placed in test area；
S4: tested plant protection unmanned aerial vehicle (10) is placed on launching platform；
S5: opening axial flow fan with adjustable moving blades and is adjusted to corresponding frequencies, and the wind speed in testing experiment region confirms wind speed Pass Test
It needs；
S6: operation plant protection unmanned aerial vehicle takes off；
S7: the hovering of plant protection unmanned aerial vehicle is kept, and axial flow fan with adjustable moving blades is increased to the height that test needs；
S8: operation plant protection unmanned aerial vehicle flies to corresponding height, and is stopped in test wind field region；
S9: operation plant protection unmanned aerial vehicle is in movements such as the region wind advance, retrogressing, Zuo Fei, right winged, up and down；
S10: the hovering of plant protection unmanned aerial vehicle is kept, axial flow fan with adjustable moving blades is reduced as far as possible；
S11: operation plant protection unmanned aerial vehicle makes plant protection unmanned aerial vehicle drop to launching platform.
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| CN111879495A (en) * | 2020-08-19 | 2020-11-03 | 苏州电器科学研究院股份有限公司 | Simulation test method for large-scale movable natural wind load condition |
| CN114486149A (en) * | 2022-01-19 | 2022-05-13 | 山东交通学院 | Wind field simulation generation device and method based on unmanned aerial vehicle test |
| CN114577432A (en) * | 2022-05-05 | 2022-06-03 | 中国飞机强度研究所 | Open type wind tunnel lifting system for airplane test and lifting method thereof |
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Application publication date: 20190802 |