CN109466643A - A kind of automobile resistance-reducing System and method for based on active Flow Control - Google Patents
A kind of automobile resistance-reducing System and method for based on active Flow Control Download PDFInfo
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- CN109466643A CN109466643A CN201811620983.3A CN201811620983A CN109466643A CN 109466643 A CN109466643 A CN 109466643A CN 201811620983 A CN201811620983 A CN 201811620983A CN 109466643 A CN109466643 A CN 109466643A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
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Abstract
The automobile resistance-reducing system based on active Flow Control that the present invention provides a kind of, including central processing subsystem, pressometer, voltage collector, excitation power supply generating device, array element switch control subsystem and the plasma array device being connect with array element switch control subsystem, plasma array device includes exposure electrod-array layer, insulating medium layer and encapsulated electrode array layer, insulating medium layer is set to inside car body installation place and is located at below exposure electrod-array layer, it is mutually staggered between exposure electrod-array layer and encapsulated electrode array layer, and with two dimension interlock Mi Pu arrangement mode in zonal distribution in installation site.Based on above system, the present invention also provides a kind of drag reduction methods.The present invention, which is solved, adjusts the air-flow of car body by the pressure information for the problem that real-time monitoring in the case where not changing body contour, so that realizing reduces air drag.The configuration of the present invention is simple, method is flexible, has very strong application value.
Description
Technical field
The present invention relates to automobile pneumatic technical field more particularly to a kind of automobile resistance-reducing systems based on active Flow Control
With method.
Background technique
Automobile it is horizontal when driving, automobile resistance mainly includes rolling resistance and aerodynamic drag, when automobile reaches a timing
Speed, aerodynamic drag is because that, at a square proportional relation, can account for 60% of automobile running resistance or more with speed, it means that hair
Motivation will be used for significant component of power or fuel oil energy to overcome air drag, therefore, reduce air drag not only
Energy saving fuel oil, moreover it is possible to automobile be made to reach higher speed.
Currently, high speed car drag reduction technology focuses mostly in the application of streamline body design and bionic non-smooth surface, but
It is extremely limited to be limited to changeable running environment and riding comfort requirement limitation, the effect promoting of drag reduction.Although depositing at present
In the design of certain applications active Flow Control, but still there is the disadvantages of structure is complicated, functional reliability is poor, therefore, faces
The highway communication of domestic high speed development, is badly in need of that a kind of simple, the movable original part of structure is few, robustness is good, can be directed to real-time vehicle condition,
Actively carry out the method and apparatus of automobile flowing control.
Summary of the invention
For above-mentioned deficiency in the prior art, a kind of automobile resistance-reducing system based on active Flow Control provided by the invention
System and method solve and actively adjust car body by the barometric information for real-time monitoring in the case where not changing body contour
Air-flow, to realize the problem of capable of being effectively reduced air drag.
In order to reach the goals above, the technical solution adopted by the present invention are as follows:
This programme provides a kind of automobile resistance-reducing system based on active Flow Control, including central processing subsystem, difference
Pressometer, voltage collector, excitation power supply generating device and the array element connecting with the central processing subsystem are opened
Control subsystem is closed, and connect and be installed on headstock, roof both ends and the tailstock with the array element switch control subsystem
Plasma array device, wherein
The plasma array device includes exposure electrod-array layer, insulating medium layer and encapsulated electrode array layer, institute
Insulating medium layer is stated to be set to inside car body installation place and be located at below the exposed electrod-array layer, the exposed electrod-array
It is mutually staggered between layer and encapsulated electrode array layer, and is in zonal distribution in installation position with the arrangement mode of the two-dimentional Mi Pu that interlocks
It sets.
Further, the exposed electrod-array layer is spaced apart from each other arrangement and square exposure electrode unit by multiple
It constituting, the exposed electrode unit is located at car body surface, and it is concordant with car body surface, and be tightly attached to above the insulating medium layer.
Still further, the encapsulated electrode array layer is spaced apart from each other arrangement and square encapsulated electrode list by multiple
Member is constituted, and the encapsulated electrode unit is embedded in inside insulating medium layer.
Still further, the pressometer is distributed in car body gradient locations, it to be used for multiple spot real-time measurement car body surface
The pressure information of position, and it is uploaded to central processing subsystem；
The voltage collector feeds back information of voltage for the information of voltage of real-time measurement plasma array device
To central processing subsystem, and monitor the drag-reduction system operation conditions；
The central processing subsystem, pressure information for being obtained according to pressometer and voltage collector measurement with
Information of voltage chooses whether using active Flow Control, and on-off order is passed to array element switch control subsystem；
The array element switch control subsystem, for controlling plasma according to the on-off order of central processing subsystem
The on-off of volume array device；
The excitation power supply device include signal generator, the power generator being connect with the signal generator and with
The step-up transformer of the power generator connection, for providing required driving voltage for the plasma array device.
Preferably, the model YZ1301 of the pressometer.
Preferably, the model HS3-5MHz of the voltage collector.
The automobile resistance-reducing method based on active Flow Control that the present invention also provides a kind of, includes the following steps:
(S1) pressure information of the car body surface of pressometer measurement is uploaded to central processing subsystem；
(S2) pressure information that central processing subsystem receives is compared with preset regulation threshold values；
(S3) whether the plasma array device of car body different location is located at using actively stream according to comparing result judgement
Dynamic control enters step (S4) if it need to use, otherwise repeats step (S1)；
(S4) excitation power supply generating device is opened, and control instruction is sent to array element switch control subsystem, into
And the corresponding electrode unit of on-off, to realize accurate drag reduction regulation.
Further, whether the judgement in described (S3) is located at the plasma array device of car body different location using master
Dynamic flowing control method particularly includes: it is default to judge whether the pressure difference of the plasma array device of car body different location is greater than
Regulation threshold values otherwise, do not use active Flow Control if so, entering step (S4) using active Flow Control, repeat
Step (S1).
Further, the calculation formula of the pressure difference are as follows:
ΔPij=Pi-Pj
Wherein, Δ PijFor pressure difference, Pi、PjFor the intensity of pressure and i ≠ j of different location measurement.
Still further, the corresponding electrode unit of on-off in (S3), specifically: encapsulated electrode unit is pacified respectively
The encapsulated electrode of different directions is then opened after opening exposure electrode unit loaded on the four direction around exposure electrode unit
Unit, and then the induced draft of four direction in two-dimensional surface is generated, to realize accurate drag reduction regulation.
Beneficial effects of the present invention:
(1) present invention can be switched according to the pressure information of real-time monitoring automobile in the process of running by array element
The on-off of control subsystem flexible modulation plasma array device, takes corresponding control methods, realizes optimal active Flow
Control, and the present invention can effectively reduce the resistance of automobile in the process of moving, not only in the case where not changing car body shape
It effectively achieves energy-saving effect and also as save cost；
(2) it is mutually staggered between exposure electrod-array layer and encapsulated electrode array layer in the present invention, and staggeredly close with two dimension
For the arrangement mode of paving in zonal distribution in installation site, the density of on-off in unit area is can be changed in this structure, and then is adjustable
The size of induced draft, identical effect can be realized in the size for being implemented without the driving voltage of adjusting power supply, to make electricity
The usage amount of pressure reforming unit is reduced accordingly, effectively improves the service life of power supply；
(3) present invention is by the selection of the installation site of plasma array device in the biggish position of body shapes variable gradient
It sets, such as headstock, roof two sides, the tailstock, can be installed for Truck type choice one or more position, regulation passes through car body stage by stage
The air-flow on surface further improves automation and drag-reduction effect；
(4) it by the on-off of different array elements in the present invention, may be implemented big for different location generation different directions
Small induced draft, effectively control flow field, to realize accurate drag reduction regulation.
Detailed description of the invention
Fig. 1 is the control structure schematic diagram of system in the present invention.
Fig. 2 is the method flow diagram in the present invention.
Fig. 3 is the schematic diagram of plasma array apparatus of the present invention.
Fig. 4 is the schematic view of the mounting position of plasma of the present invention installation in the car.
Wherein, 1- central processing subsystem, 2- pressometer, 3- voltage collector, 4- excitation power supply generating device, 5-
Array element switch control subsystem, 6- plasma array device, 601- exposure electrod-array layer, 602- insulating medium layer,
603- encapsulated electrode array layer, the first damping device of 701- installation site, the second damping device of 702- installation site, 703- third
Damping device installation site, the 4th damping device installation site of 704-.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
Embodiment.
As shown in Figure 1, the present invention provides a kind of automobile resistance-reducing system based on active Flow Control, including central processing
System 1, the pressometer 2 being connect respectively with the central processing subsystem 1, voltage collector 3, excitation power supply generating device
4 and array element switch control subsystem, 5 and headstock, vehicle are connect and are installed on the array element switch control subsystem 5
Push up the plasma array device 6 of both ends and the tailstock, the plasma array device 6 includes exposure electrod-array layer 601, absolutely
Edge dielectric layer 602 and encapsulated electrode array layer 603, the insulating medium layer 602 are set to inside car body installation place and are located at institute
Exposed 601 lower section of electrod-array layer is stated, is mutually staggered between the exposed electrod-array layer 601 and encapsulated electrode array layer 603,
And with two dimension interlock Mi Pu arrangement mode in zonal distribution in installation site, the exposed electrod-array layer 601 is by multiple phases
It is mutually alternatively arranged and square exposure electrode unit is constituted, the exposed electrode unit is located at car body surface, with car body table
Face is concordant, and is tightly attached to 602 top of insulating medium layer, and the encapsulated electrode array layer 603 is spaced apart from each other arrangement by multiple
And square encapsulated electrode unit is constituted, the encapsulated electrode unit is embedded in inside insulating medium layer 602, the pressure
Measuring appliance 2 is distributed in car body gradient locations, for the pressure information of multiple spot real-time measurement car body surface position, and is uploaded to center
Processing subsystem 1, the model YZ1301 of the pressometer 2；The voltage collector 3 is used for real-time measurement plasma
The information of voltage is fed back to central processing subsystem 1, and monitors the drag-reduction system by the information of voltage of volume array device 6
Operation conditions, the model HS3-5MHz of the voltage collector 3；The central processing subsystem 1, for according to pressure measurement
The pressure information and information of voltage that device 2 and voltage collector 3 measure, choose whether using active Flow Control, and on-off is ordered
Order passes to array element switch control subsystem 5；The array element switch control subsystem 5, for according to central processing
The on-off of the order control plasma array device 6 of subsystem 1；The excitation power supply device 4 includes signal generator and institute
It states the power generator of signal generator connection and connect step-up transformer with the power generator, wherein sent out by signal
Voltage signal needed for raw device generates, amplifies, then rise to required voltage by step-up transformer, and then be described through power generator
Plasma array device 6 provides required driving voltage.
Based on above system, the automobile resistance-reducing method based on active Flow Control that the invention also discloses a kind of, such as Fig. 2 institute
Show, its implementation includes the following steps:
(S1) pressure information of the car body surface of pressometer measurement is uploaded to central processing subsystem；
(S2) pressure information that central processing subsystem receives is compared with preset regulation threshold values；
(S3) judge whether the plasma array device of different location uses active Flow Control according to comparing result, if
Need to using then entering step (S4), on the contrary it is then repeatedly step (S1)；
Whether the plasma array device for judging different location in (S3) uses the specific of active Flow Control
Method are as follows: judge whether the pressure difference of the plasma array device of car body different location is greater than preset regulation threshold values, if so,
Active Flow Control is then used, (S4) is entered step, otherwise, active Flow Control is not used, repeats step (S1).
The calculation formula of the pressure difference are as follows:
ΔPij=Pi-Pj
Wherein, Δ PijFor pressure difference, Pi、PjFor the intensity of pressure and i ≠ j of different location measurement.
The corresponding electrode unit of on-off in (S3), specifically: encapsulated electrode unit is respectively arranged in exposure electricity
Four direction around pole unit then opens the encapsulated electrode unit of different directions, and then produce after opening exposure electrode unit
The induced draft of four direction in raw two-dimensional surface, to realize accurate drag reduction regulation；
(S4) excitation power supply generating device is opened, and control instruction is sent to array element switch control subsystem, into
And the corresponding electrode unit of on-off, to realize accurate drag reduction regulation.
In the present embodiment, as Figure 1-Figure 4, the selection criteria of 6 installation site of plasma array device is car body shape
The biggish position of shape variable gradient, such as the first damping device installation site 701, the second damping device installation site 702, third subtract
Device installation site 703 and the 4th damping device installation site 704 are hindered, can be pacified for Truck type choice one or more position
Dress, regulates and controls the air-flow by car body surface stage by stage.Around exposure electrode unit respectively there is an encapsulation electricity in four direction
Pole unit is matched, after opening exposure electrode unit, opens corresponding encapsulated electrode unit, that is, can produce in two-dimensional surface
The induced draft of four direction, thus realize accurate drag reduction regulation, exposure electrod-array layer 601 and encapsulated electrode in the present invention
It is mutually staggered between array layer 603, and is in zonal distribution in installation site with the arrangement mode of the two-dimentional Mi Pu that interlocks.
The working principle of the invention: by the pressure information of 2 real-time measurement car body surface different location of pressometer, and
It is uploaded to central processing subsystem 1 in real time, central processing subsystem 1 compares this after extracting the pressure information of vehicle body at this time
When different location point between pressure difference and preset threshold, judgement want if desired then to open using active Flow Control means
Control command is passed to array element switch control subsystem 5 for the pressure information of each point by excitation power supply generating device 4,
The corresponding plasma array device 6 of on-off, realizes the finely regulating of stream field, at the same the passback etc. in real time of voltage collector 3 from
The information of voltage of daughter array apparatus 6, while the information is stored by central processing subsystem 1, regulation is improved convenient for researcher
Mode.
The present invention by above-mentioned design, actively adjusts vehicle by being directed to real-time condition in the case where not changing body contour
The air-flow of body is effectively reduced the resistance of air, has very strong application value.
Claims (10)
1. a kind of automobile resistance-reducing system based on active Flow Control, which is characterized in that including central processing subsystem (1), divide
Pressometer (2), the voltage collector (3), excitation power supply generating device not connect with the central processing subsystem (1)
(4) and array element switch control subsystem (5) it, and connect and is installed on the array element switch control subsystem (5)
The plasma array device (6) of headstock, roof both ends and the tailstock, wherein
The plasma array device (6) includes exposure electrod-array layer (601), insulating medium layer (602) and encapsulated electrode
Array layer (603), the insulating medium layer (602) are set to inside car body installation place and are located at the exposed electrod-array layer
(601) lower section, mutually staggers between the exposed electrod-array layer (601) and encapsulated electrode array layer (603), and is handed over two dimension
The arrangement mode of wrong Mi Pu is in zonal distribution in installation site.
2. the automobile resistance-reducing system according to claim 1 based on active Flow Control, which is characterized in that the exposure electricity
Pole array layer (601) is spaced apart from each other arrangement and square exposure electrode unit is constituted, the exposed electrode unit by multiple
It is concordant with car body surface positioned at car body surface, and be tightly attached to above the insulating medium layer (602).
3. the automobile resistance-reducing system according to claim 1 based on active Flow Control, which is characterized in that the encapsulation electricity
Pole array layer (603) is spaced apart from each other arrangement and square encapsulated electrode unit is constituted, the encapsulated electrode unit by multiple
It is internal to be embedded in insulating medium layer (602).
4. the automobile resistance-reducing system according to claim 1 based on active Flow Control, which is characterized in that the pressure is surveyed
Measuring device (2) is distributed in car body gradient locations, for the pressure information of multiple spot real-time measurement car body surface position, and is uploaded to center
Processing subsystem (1)；
The voltage collector (3) is used for the information of voltage of real-time measurement plasma array device (6), and information of voltage is anti-
It feeds central processing subsystem (1), and monitors the drag-reduction system operation conditions；
The central processing subsystem (1), for measuring obtained air pressure according to pressometer (2) and voltage collector (3)
Information and information of voltage choose whether using active Flow Control, and on-off order is passed to array element switch control
System (5)；
The array element switch control subsystem (5), for according to the on-off order of central processing subsystem (1) control etc. from
The on-off of daughter array apparatus (6)；
The excitation power supply device (4) include signal generator, the power generator being connect with the signal generator and with
The step-up transformer of the power generator connection, for driving voltage needed for being provided for the plasma array device (6).
5. the automobile resistance-reducing system according to claim 4 based on active Flow Control, which is characterized in that the pressure is surveyed
The model YZ1301 of measuring device (2).
6. the automobile resistance-reducing system according to claim 4 based on active Flow Control, which is characterized in that the voltage is adopted
The model HS3-5MHz of storage (3).
7. a kind of automobile resistance-reducing method based on active Flow Control, includes the following steps:
(S1) pressure information of the car body surface of pressometer measurement is uploaded to central processing subsystem；
(S2) pressure information that central processing subsystem receives is compared with preset regulation threshold values；
(S3) whether active Flow control is used according to the plasma array device that comparing result judgement is located at car body different location
System enters step (S4) if it need to use, otherwise repeats step (S1)；
(S4) excitation power supply generating device is opened, and control instruction is sent to array element switch control subsystem, Jin Ertong
Break corresponding electrode unit, to realize accurate drag reduction regulation.
8. the automobile resistance-reducing method according to claim 7 based on active Flow Control, which is characterized in that in (S3)
Judgement be located at car body different location plasma array device whether use active Flow Control method particularly includes: judgement
Whether the pressure difference of the plasma array device of car body different location is greater than preset regulation threshold values, if so, using actively
Flowing control, enters step (S4), otherwise, does not use active Flow Control, repeats step (S1).
9. the automobile resistance-reducing method according to claim 8 based on active Flow Control, which is characterized in that the pressure difference
The calculation formula of value are as follows:
ΔPij=Pi-Pj
Wherein, Δ PijFor pressure difference, Pi、PjFor the intensity of pressure and i ≠ j of different location measurement.
10. the drag reduction method according to claim 7 based on active Flow Control automobile, which is characterized in that (S3)
The corresponding electrode unit of middle on-off, specifically: four be respectively arranged in encapsulated electrode unit around exposed electrode unit
The encapsulated electrode unit of different directions is then opened, and then four are generated in two-dimensional surface after opening exposure electrode unit in direction
The induced draft in direction, to realize accurate drag reduction regulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811620983.3A CN109466643A (en) | 2018-12-28 | 2018-12-28 | A kind of automobile resistance-reducing System and method for based on active Flow Control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811620983.3A CN109466643A (en) | 2018-12-28 | 2018-12-28 | A kind of automobile resistance-reducing System and method for based on active Flow Control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113766722A (en) * | 2021-09-10 | 2021-12-07 | 大连理工大学 | Method for comparing thickness of cathode layer in surface dielectric barrier discharge |
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