CN209700792U - A kind of pneumatic noise reduction automobile A column device based on active vortex control - Google Patents
A kind of pneumatic noise reduction automobile A column device based on active vortex control Download PDFInfo
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- CN209700792U CN209700792U CN201920423040.5U CN201920423040U CN209700792U CN 209700792 U CN209700792 U CN 209700792U CN 201920423040 U CN201920423040 U CN 201920423040U CN 209700792 U CN209700792 U CN 209700792U
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- column
- noise reduction
- automobile
- vortex
- pneumatic noise
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Abstract
The utility model discloses a kind of pneumatic noise reduction automobile A column devices based on active vortex control, comprising: A column is equidistantly positioned multiple mounting holes along its length；Multiple vortex generators, setting is in the mounting hole and through the mounting hole；Connecting rod is arranged on the inside of the A column, and is connected with described vortex generator one end；Two groups of lead screw mould groups drive the surface of the relatively described A column of the connecting rod to move up and down；PLC controller connects the lead screw mould group.It by two pairs of lead screw mould groups controls height of multiple vortex generators relative to A column surface to the utility model, realizes pneumatic noise reduction under conditions of different speeds based on vortex generator.
Description
Technical field
The utility model relates to aerodynamics noise reduction field more particularly to a kind of pneumatic drops based on active vortex control
It makes an uproar automobile A column device.
Background technique
With the development of economy, automobile industry development is rapid, and automobile has become the vehicles the most convenient and fast instantly.But
It is the raising increased with speed with car ownership, serious shadow also increasing in the aerodynamic noise that it is generated when driving
Ring the riding comfort and driving safety of automobile.Researcher and automaker increasingly pay attention in automobile pneumatic at this stage
The analysis and control of noise.
Aerodynamic noise refers in running car, air-flow can be caused to separate when air-flow flows through bodywork surface high spot, occurs
Turbulent flow and the noise generated.Studies have shown that the source of Automotive Pneumatic Noise is mainly hood, front of the car bottom plate, front window
With the positions such as rear window.Wherein, in high-frequency range, for driver, front window region is main noise source, because of air-flow
Long vortex wake is formed in the region, causes the pressure fluctuation that side window surface is violent.Therefore, have to the flow field in the region
Effect combing is significant to raising vehicle ride comfort and driving safety to reduce levels of aerodynamic noise.
Vortex control be for vortex generate region, take improve be vortexed method come achieve the purpose that comb flow field,
The structure that some passive control vortex are installed in the region that vortex generates is common method, and this kind of vortex control structure is known as whirlpool
Flow-generator.Vortex control at this stage in aviation field using relatively broad, it is seldom in automotive field application.
Currently, the vehicle A column structure that most of automobile is smooth using surface, can not have the flow field in front window region
The combing of effect can generate strong aerodynamic noise in galloping, seriously affect automobile vehicle ride comfort and
Driving safety.In addition, non-smooth surface has the A -pillar structure of certain pneumatic noise reduction effect, structure is fixed, Wu Fashi
To the optimization of vehicle Flow Field outside carding effect when existing automobile is run at high speed with friction speed, pneumatic noise reduction effect is very limited,
And it will increase the aerodynamic noise of automobile instead when automobile is run at a low speed.
Studies have shown that the identical vortex generator of dimensional parameters, under the conditions of different flow field velocities, reduce air-flow separation and
The effect for improving vortex is not also identical, and under the conditions of different flow fields environments, the carding effect of vortex generator stream field is different,
When flow field velocity is lower, the height dimension that vortex generator is exposed in flow field is excessive to will increase automobile noise instead；It is flowing
When field speed degree is higher, with the increase of flow field velocity, to keep vortex generator stream field that there is optimal carding effect, Ying Shi
The height dimension in flow field is exposed to when increasing vortex generator.
Utility model content
The utility model is to solve current technology shortcoming, provides a kind of pneumatic drop based on active vortex control
It makes an uproar automobile A column device, controls height of multiple vortex generators relative to A column surface by two pairs of lead screw mould groups, realize base
In the pneumatic noise reduction of vortex generator.
A kind of technical solution provided by the utility model are as follows: pneumatic noise reduction automobile A column dress based on active vortex control
It sets, comprising:
A column is equidistantly positioned multiple mounting holes along its length；
Multiple vortex generators, setting is in the mounting hole and through the mounting hole；
Connecting rod is arranged on the inside of the A column, and is connected with one end of the vortex generator；
Two groups of lead screw mould groups drive the surface of the relatively described A column of the connecting rod to move up and down；
Controller connects the lead screw mould group.
Preferably, the lead screw mould group includes:
Pedestal, one side surface have groove, and the groove two sides have sliding rail；
Motor, setting is in the groove；
Screw rod, the output axis connection with the motor；
Feed screw nut, matches setting with the lead screw, and the feed screw nut is connected the connecting rod.
Preferably, further includes:
Surface on the base is arranged in sliding rail, is located at the groove two sides；
Sliding block, middle part are connected the feed screw nut, and both ends slideably match in the sliding rail.
Preferably, further includes:
Vehicle speed sensor is arranged in automobile gearbox output end；
Shaping amplifier is arranged by the vehicle speed sensor, connects the vehicle speed sensor and the controller.
Preferably,
Sealing ring is set on the inside of the mounting hole, and slotted liner is arranged in lower section；
Wherein, the vortex generator is arranged in the fluting.
Preferably,
The bottom lengths of the vortex generator are 34.5~35.5mm, and width is 4.7~5.3mm, highly for 7.0~
8.0mm。
It is described in the utility model the utility model has the advantages that 1) the utility model during running car pass through automobile speed pass
Sensor acquires real-time speed, controls height of multiple vortex generators relative to A column surface by two pairs of lead screw mould groups, realizes
To the pneumatic noise reduction based on vortex generator.Automobile A column controls multiple vortex generators relative to A column table according to real-time speed
The height in face makes it match the combing effect in front window region flow field and the real-time environmental conditions in flow field, realizes to front side
The optimization of the pneumatic noise reduction effect in window region improves the riding comfort and driving safety of automobile；2) it can widely apply
It is applied widely in a variety of models, there is higher reliability, can satisfy the demand of user；3) in the installation of automobile A column surface
Multiple vortex generators improve the technology sense and artistic feeling of vehicle modeling.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pneumatic noise reduction automobile A column device based on active vortex control of the utility model.
Fig. 2 is the structural schematic diagram of the thick stick mould group of the utility model.
Fig. 3 is the circuit diagram of the shaping amplifier of the utility model.
Fig. 4 is the front view of the vortex generator of the utility model.
Fig. 5 is the left view of the vortex generator of the utility model.
Fig. 6 is the top view of the vortex generator of the utility model.
Fig. 7 is the optimal control device of the pneumatic noise reduction vehicle A column structure based on active vortex control of the utility model
Control flow chart.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
As shown in Figure 1, a kind of pneumatic noise reduction automobile A column device based on active vortex control of the utility model, comprising:
Automobile A column 100, multiple mounting holes of spaced set from top to bottom on upper plate；Multiple vortex generators 110 are mounted on automobile A
At the mounting hole of column, penetrating mounting holes be arranged and can be moved up and down in hole, when its relative to A column surface rise when, to vehicle outside
Flow field has good combing effect, and the aerodynamic noise in automobile front side window region can be effectively reduced.Connecting rod 130 is arranged in A column
Inside is connected with one end of turbine generator 110.Two pairs of opposite A column surfaces of 150 drive link of lead screw mould group 130 move up and down.
The connection control lead screw mould group of PLC controller 140.
Car speed sensor is arranged in A outer surface of column, is arranged by car speed sensor.Car speed sensor is
Hall effect type sensor is connect with the PLC controller input terminal by shaping amplifier.
The input terminal of PLC controller is connect with the car speed sensor, and output end and two pairs of lead screws mould group are believed
The connection of number receiver, PLC controller obtain the real-time speed signal of automobile by the car speed sensor, and output is believed
The movement of number control two pairs of lead screws mould group sliding block, and then control the lifting of the multiple vortex generator.Automobile speed passes
Sensor is connect by shaping amplifier with the input terminal of PLC controller 140, and pulse signal is made to be amplified and be passed after Shape correction
It is handled to PLC controller 140.
As shown in Fig. 2, lead screw mould group 150 includes pedestal 151, the one side of pedestal 151 has groove, and groove two sides have
Sliding slot 155.Motor 152 is arranged in groove, the output shaft connection wire rod 153 of motor 152, feed screw nut 154 and the lead screw
153 matching settings, the feed screw nut 154 are connected the connecting rod 130.
In another embodiment, the both ends of the bottom of the connected sliding block 156 of feed screw nut 154, sliding block 156 are matched in sliding slot
In 155, sliding block can be slided up and down with the movement of feed screw nut 154 along sliding slot 155.Sealing ring is set on the inside of mounting hole
120, slotted liner 160 is arranged in lower section, and the setting of slotted liner 160 and sealing ring 120 can enter in A column to avoid dirt etc.
Portion, and move up and down vortex generator steadily.
The dimensional parameters of mounting hole are as follows: bottom is grown between 36.5~37.5mm, wide between 6.7~7.3mm, and both ends
For semicircle, semicircle radius is between 3.35~3.65mm.The spacing of adjacent mounting hole is between 9.5~10.5mm.
The dimensional parameters of sealing ring 120 are as follows: bottom is grown between 36.5~37.5mm, wide between 6.7~7.3mm, and
Both ends are semicircle, and semicircle radius R is highly 2mm, with a thickness of 4mm in 3.35~3.65mm.
As Figure 4-Figure 6, multiple vortex generators, dimensional parameters are as follows: the long L1 in bottom between 34.5~35.5mm,
Wide W is between 4.7~5.3mm, and whole height H is between 7.0~8.0mm, and top two sides use round-corner transition, radius of corner
R1 is between 4.8~5.2mm, and the corresponding central angle of circular arc is 90 °, and two long side of top uses round-corner transition, radius of corner R2
Between 2.4~2.6mm, and the corresponding central angle of circular arc is 90 °.The multiple vortex generator is on the length direction of A column
Equidistant arranged in parallel, neighbouring vortices generator spacing is between 9.5~10.5mm.
The multiple vortex generator bottom is connect by welding manner with connecting rod, when connecting rod is subjected to displacement, multiple whirlpools
Equal displacement can also occur for flow-generator.The output shaft and screw rod of motor are welded to connect, when the output shaft of motor generates rotation
When, screw rod also generates equal rotation, feed screw nut can generate displacement feed screw nut accordingly on screw rod length direction with
Sliding block is welded to connect, and when feed screw nut generates displacement, sliding block is generating equal displacement in slide direction.Two pairs of silks
Thick stick mould group sliding block, is limited between 0~5mm in the displacement range in slide direction.
Car speed sensor is hall effect type sensor, can satisfy the requirement of quick response and sensitivity, is vapour
Vehicle be equipped with electronic system pedestal sensor, specially in automobile with certain speed when driving, wheel often rotates a circle, automobile
Vehicle speed sensor can export its frequency pulse signal directly proportional to vehicle wheel rotational speed, pass through the counter counts of PLC controller
The umber of pulse in the unit time is calculated, the real-time speed of automobile can be obtained；Car speed sensor by shaping amplifier with
The input terminal of PLC controller connects, and so that pulse signal is reached PLC controller after amplification and Shape correction and is handled, wherein
In this embodiment, shaping amplifier is made of 1 operational amplifier, 1 shaping integrated circuit and several capacitors, resistance, tool
Body is shown in Fig. 3；Shaping amplifier is made of 1 operational amplification circuit and 1 shaping integrated circuit, and operational amplification circuit is transported by 1
Calculate 210,1 potentiometer VR of amplifier1With resistance R1、R2、 R3Composition, shaping integrated circuit are defeated by power supply VCC, 74L,S32 42
Enter or door 220 and diode D1、 D2, resistance R4、R5、R6Composition, UxIt is obtained after operational amplification circuit is handled for signal input part
The signal U arrivedx'=(R1×VCC+Ux(R3+VR1+R4))/R1×R4, then shaped integrated circuit repair true processing after obtain output letter
Number U0, U0=β Ux, wherein β is amplification coefficient, and value is determined by potentiometer VR1.PLC controller is believed according to the speed of input terminal
Number size output electric signal is to two pairs of lead screw mould groups, with the displacement of this sliding block for controlling lead screw mould group, to control multiple vortex
Height of the generator relative to A column surface, and then the pneumatic noise reduction effect for controlling vortex generator keeps optimal.
As shown in fig. 7, a kind of control of pneumatic noise reduction automobile A column device based on active vortex control of the utility model
Process and working principle include:
Step 1 is obtained according to the pedestal sensor hall effect type car speed sensor for the electronic system that automobile is equipped with
Take the real-time speed signal of automobile；
Step 2 obtains the real-time speed signal size of automobile, output according to car speed sensor using PLC controller
Signal is controlled to two pairs of lead screw mould groups, two pairs of lead screw mould group sliding blocks is controlled and slides into suitable position；
Step 3 dynamically controls height of multiple vortex generators relative to A column surface using two pairs of lead screw mould group sliding blocks
Degree.
When the real-time speed signal of automobile is between preset value 1 (70m/s) and preset value 2 (90m/s), multiple whirlpools are controlled
Flow-generator rises to preset height 1 (2.5mm~3.5mm)；When the real-time speed signal of automobile in preset value 2 (90m/s) and
When between preset value 3 (110m/s), controls multiple vortex generators and rise to preset height 2 (4.5mm~5.5mm)；Work as automobile
When real-time speed signal is more than preset value 3 (110m/s), control multiple vortex generators be increased to preset height 3 (6mm~
7mm)；When the real-time speed signal of automobile is lower than preset value 1 (70m/s), control so that multiple vortex generators drop to just
Begin height (2mm).Using multiple vortex generators relative to A column surface height control under different speeds its to vehicle Flow Field outside
With good combing effect, and then the aerodynamic noise in automobile front side window region is effectively reduced.
The utility model acquires real-time speed by car speed sensor during running car, passes through two pairs of silks
Thick stick mould group controls height of multiple vortex generators relative to A column surface, realizes to the pneumatic noise reduction based on vortex generator
Automobile A column controls height of multiple vortex generators relative to A column surface according to real-time speed, flows it to front window region
The combing effect of field and the real-time environmental conditions in flow field match, and realize in automobile with friction speed when driving to front window area
The optimization of the pneumatic noise reduction effect in domain improves the riding comfort and driving safety of automobile.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (6)
1. a kind of pneumatic noise reduction automobile A column device based on active vortex control characterized by comprising
A column is equidistantly positioned multiple mounting holes along its length；
Multiple vortex generators, setting is in the mounting hole and through the mounting hole；
Connecting rod, setting are connected simultaneously on the inside of the A column, and with one end of the vortex generator；
Two groups of lead screw mould groups drive the surface of the relatively described A column of the connecting rod to move up and down；
Controller connects the lead screw mould group.
2. the pneumatic noise reduction automobile A column device according to claim 1 based on active vortex control, which is characterized in that institute
Stating lead screw mould group includes:
Pedestal, one side surface have groove, and the groove two sides have sliding rail；
Motor, setting is in the groove；
Screw rod, the output axis connection with the motor；
Feed screw nut, matches setting with the lead screw, and the feed screw nut is connected the connecting rod.
3. the pneumatic noise reduction automobile A column device according to claim 2 based on active vortex control, which is characterized in that also
Include:
Surface on the base is arranged in sliding rail, is located at the groove two sides；
Sliding block, middle part are connected the feed screw nut, and both ends slideably match in the sliding rail.
4. the pneumatic noise reduction automobile A column device according to claim 3 based on active vortex control, which is characterized in that also
Include:
Vehicle speed sensor is arranged at automobile gearbox output shaft,
Shaping amplifier is arranged by the vehicle speed sensor, connects the vehicle speed sensor and the controller.
5. the pneumatic noise reduction automobile A column device according to claim 4 based on active vortex control, which is characterized in that
Sealing ring is set on the inside of the mounting hole, and slotted liner is arranged in lower section；
Wherein, the vortex generator is arranged in the fluting.
6. the pneumatic noise reduction automobile A column device according to claim 5 based on active vortex control, which is characterized in that
The bottom lengths of the vortex generator are 34.5~35.5mm, and it is highly 7.0~8.0mm that width, which is 4.7~5.3mm,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920423040.5U CN209700792U (en) | 2019-04-01 | 2019-04-01 | A kind of pneumatic noise reduction automobile A column device based on active vortex control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920423040.5U CN209700792U (en) | 2019-04-01 | 2019-04-01 | A kind of pneumatic noise reduction automobile A column device based on active vortex control |
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| CN209700792U true CN209700792U (en) | 2019-11-29 |
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|---|---|---|---|
| CN201920423040.5U Expired - Fee Related CN209700792U (en) | 2019-04-01 | 2019-04-01 | A kind of pneumatic noise reduction automobile A column device based on active vortex control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911019A (en) * | 2019-04-01 | 2019-06-21 | 吉林大学 | A kind of pneumatic noise reduction automobile A column device and its control method based on active vortex control |
-
2019
- 2019-04-01 CN CN201920423040.5U patent/CN209700792U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911019A (en) * | 2019-04-01 | 2019-06-21 | 吉林大学 | A kind of pneumatic noise reduction automobile A column device and its control method based on active vortex control |
| CN109911019B (en) * | 2019-04-01 | 2024-02-06 | 吉林大学 | Active vortex control-based pneumatic noise reduction automobile A column device and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 Termination date: 20200401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |