CN110920759B - Automobile aerodynamic suite active control system based on flow field sensing - Google Patents
Automobile aerodynamic suite active control system based on flow field sensing Download PDFInfo
- Publication number
- CN110920759B CN110920759B CN201911152035.6A CN201911152035A CN110920759B CN 110920759 B CN110920759 B CN 110920759B CN 201911152035 A CN201911152035 A CN 201911152035A CN 110920759 B CN110920759 B CN 110920759B
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- vehicle
- flow field
- automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
Abstract
The invention provides an automobile aerodynamic suite active control system based on flow field perception, which comprises a signal acquisition module, a signal transmission module, a main control module, an execution module and a suite module which are sequentially connected, wherein the signal acquisition module is used for acquiring flow field characteristic signals on the surface of an automobile and transmitting the signals to the main control module through the signal transmission module, the main control module processes the transmitted data to judge the flow field environment around the automobile and the automobile state, and the execution module drives the suite module and performs motion feedback to enable the automobile to reach the state with optimal aerodynamic performance. According to the invention, the flow field information around the vehicle is acquired and processed, so that the state of the flow field around the vehicle can be analyzed and judged in real time, and the pneumatic external member of the vehicle is actively controlled according to the state, so that the aerodynamic performance of the vehicle in different environments is optimal, and the stability and the fuel economy of the vehicle can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of automobile active control, and particularly relates to an automobile aerodynamic suite active control system based on flow field sensing.
Background
With the popularization of automobile application and the pursuit of high-quality life, people also put higher requirements on the performances of fuel economy, operation stability, comfort and the like of automobiles, so that the development of the aerodynamic performance of vehicles is increasingly valued by various enterprises. In the traditional development of the aerodynamic performance of the vehicle, in order to improve the aerodynamic performance of the vehicle, some aerodynamic external members are usually added, the external members are usually of fixed structures, real-time adjustment cannot be carried out according to the running state of the vehicle, and the vehicle can be ensured to be in good aerodynamic performance only in a certain state. At present, some aerodynamic external members capable of being actively controlled are installed on some high-end vehicle models through the development of an electric control technology at any time, however, the active control external members are mainly adjusted according to the vehicle speed, and in the actual running process of the vehicle, the surrounding environment is complex, and the influence on the performance of the vehicle is large. At present, the vehicle speed is used as a judgment signal for active adjustment, only the state of the vehicle in an ideal environment is considered, and the actual state of the vehicle cannot be accurately reflected, so that the vehicle cannot be in the optimal aerodynamic performance only according to the vehicle speed, a real-time signal acquisition and processing system capable of sensing the surrounding environment needs to be developed, the state of the vehicle in different environments is directly and truly fed back, and the active control technology for improving the vehicle pneumatic suite is of great significance.
Disclosure of Invention
In view of the above, the present invention is directed to provide an active control system for an automotive aerodynamic kit based on flow field sensing, which can analyze and judge the state of a flow field around a vehicle in real time by collecting and processing the information of the flow field around the vehicle, and actively control the aerodynamic kit of the vehicle based on the analysis, so that the aerodynamic performance of the vehicle in different environments is optimized, and the stability and fuel economy of the vehicle can be effectively improved.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides an automobile aerodynamics external member initiative control system based on flow field perception, is including the signal acquisition module, signal transmission module, host system, execution module and the external member module that connect gradually, signal acquisition module be used for gathering car surface department flow field characteristic signal to through signal transmission module with signal transmission to host system, host system handles through the data of transmission, judges flow field environment and vehicle state around the vehicle, drives the external member module through the execution module, and the motion feedback makes the vehicle reach the state that the aerodynamic performance is optimal.
Furthermore, the signal acquisition module comprises a pressure sensor array, odd front pressure sensor arrays are arranged at the front bumper of the vehicle by taking the central axis of the vehicle as the center and at equal intervals towards two sides, and the same number of rear pressure sensor arrays are arranged at the corresponding positions of the rear bumper of the vehicle.
Furthermore, the main control module comprises a signal fusion module, a signal filtering module and a signal processing module, the signal fusion module performs fusion processing on the signals obtained by the signal acquisition module through a fusion algorithm, and a calculation formula is as follows
P＝[(pa1-pb1),(pa2-pb2),......,(pan-pbn)]×[α1,α2,......,αn]T (1)
In the formula (1), P is a pressure intensity fusion signal; p is a radical ofanThe signal collected by the nth sensor in the front pressure sensor array; p is a radical ofbnThe signal collected by the nth sensor in the rear pressure sensor array; alpha is alphanFor nth set of sensor acquisitionThe weight of the signal, and
n is the number of sensors and is an odd number greater than 1;
the fusion signal is processed by the signal filtering module to obtain a smooth signal, the signal processing module is used for judging the surrounding flow field environment of the vehicle and the vehicle state according to the smooth signal and outputting a judgment signal, and the calculation formula is as follows
In the formula (2), F is the resistance borne by the vehicle; p is a pressure intensity fusion signal; a is the vehicle orthographic projection area; λ and γ are vehicle coefficients;
the judgment signal is transmitted to the execution module through the signal transmission module.
Furthermore, the execution module comprises a driving module and a state comparison module, wherein the driving module drives the external member module through the actuator according to the judgment signal, and the state comparison module feeds back the motion of the driving module by acquiring the state information of the external member module, so that the vehicle finally reaches the state with the optimal aerodynamic performance.
Furthermore, the signal acquisition module comprises speed sensors which are arranged on the front side, the rear side, the upper side, the lower side, the left side and the right side of the vehicle and respectively acquire signals of the resistance force, the lift force and the lateral force.
Furthermore, the measurement accuracy of the pressure sensor used in the signal acquisition module is not lower than 0.1%.
Furthermore, the signal transmission module comprises two modes of wireless transmission and wired transmission.
Furthermore, a Kalman filtering algorithm is arranged in the signal fusion module.
Furthermore, a CAN bus communication mode is adopted between the main control module and the execution modules, and each execution module is provided with a node controller.
Furthermore, the driving module adopts a steering engine with a self-locking function, and the adjusting precision is 0.2-1.0 degree.
Compared with the prior art, the active control system of the automobile aerodynamic suite based on flow field perception has the following advantages:
the invention provides an automobile aerodynamic external member active control system based on flow field perception, which can analyze and judge the state of a flow field around a vehicle in real time by acquiring and processing the information of the flow field around the vehicle, and actively control the aerodynamic external member of the vehicle according to the state of the flow field around the vehicle, so that the aerodynamic performance of the vehicle in different environments is optimal, and the stability and the fuel economy of the vehicle can be effectively improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of an active control system of an automotive aerodynamic suite based on flow field sensing according to an embodiment of the present invention;
FIG. 2 is a schematic view of a front sensor mounting according to an embodiment of the present invention;
fig. 3 is a schematic view of a rear sensor according to an embodiment of the present invention.
Description of reference numerals:
1-a signal acquisition module; 2-a signal transmission module; 3-a main control module; 4-an execution module; 5-a kit module; 6-a signal fusion module; 7-a signal filtering module; 8-a signal processing module; 9-a drive module; 10-state comparison module, 11-front pressure sensor array, 12-back pressure sensor array.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-3, the invention provides an active control system of an automotive aerodynamic suite based on flow field sensing, which comprises a signal acquisition module 1, a signal transmission module 2, a main control module 3, an execution module 4 and an suite module 5, wherein an odd number of front pressure sensor arrays 11 are arranged at equal intervals to two sides of a front bumper of a vehicle by taking a central axis of the vehicle as a center, the same number of rear pressure sensor arrays 12 are arranged at corresponding positions of a rear bumper of the vehicle, and the front pressure sensor arrays 11 and the rear pressure sensor arrays 12 form the signal acquisition module 1; the signal acquisition module 1 acquires flow field characteristic signals on the surface of the automobile, the signals are transmitted to the main control module 3 through the signal transmission module 2, the main control module 3 comprises a signal fusion module 6, a signal filtering module 7 and a signal processing module 8, and the signal fusion module 6 performs fusion processing on the signals obtained by the signal acquisition module 1 through a fusion algorithm, as shown in formula 1; the fusion signal is processed by the signal filtering module 7 to obtain a smooth signal, the signal processing module 8 is used for judging the surrounding flow field environment of the vehicle and the vehicle state according to the smooth signal, and outputting a judgment signal as shown in the formula 2; the judgment signal is transmitted to the execution module 4 through the signal transmission module 2, the execution module 4 comprises a driving module 9 and a state comparison module 10, the driving module 9 drives the external member module 5 through an actuator according to the judgment signal, the state comparison module 10 feeds back the motion of the driving module 9 by acquiring the state information of the external member module 5, and finally the vehicle reaches the state with the optimal aerodynamic performance;
P＝[(pa1-pb1),(pa2-pb2),......,(pan-pbn)]×[α1,α2,......,αn]T (1)
in the formula (1), P is a pressure intensity fusion signal; p is a radical ofanThe signal collected by the nth sensor in the front pressure sensor array; p is a radical ofbnThe signal collected by the nth sensor in the rear pressure sensor array; alpha is alphanWeights of the signals are collected for the nth group of sensors, and
n is the number of sensors and is an odd number greater than 1;
in the formula (2), F is the resistance borne by the vehicle; p is a pressure intensity fusion signal; a is the vehicle orthographic projection area; λ and γ are vehicle coefficients.
The signal acquisition module 1 can also be composed of speed sensors, and the module can be arranged at the front and back, the upper and lower sides, and the left and right sides of the vehicle to respectively acquire signals of the resistance force, the lift force and the lateral force. The invention can accurately obtain the real-time flow field information around the vehicle by arranging the pressure sensors at different positions, and takes the data as the active control basis of the pneumatic external member.
The measurement precision of the pressure sensor used in the signal acquisition module 1 is not lower than 0.1%, and accurate extraction of information around the flow field is guaranteed.
The signal transmission module 2 comprises two modes of wireless transmission and wired transmission, and the best transmission mode can be selected according to specific implementation conditions.
And a Kalman filtering algorithm is arranged in the signal fusion module 6, so that the data acquired on site can be updated and processed in real time.
The main control module 3 and the execution modules 4 adopt a CAN bus communication mode, and each execution module 4 is provided with a node controller. The data communication among all nodes of the network formed by the CAN bus is strong in real-time performance, a redundant structure is easy to form, the reliability and the flexibility of the system are improved, and the development period is short.
The driving module 9 adopts a steering engine with a self-locking function, the adjusting precision is 0.2-1.0 degree, and the accurate control of the pneumatic external member can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides an automobile aerodynamics external member active control system based on flow field perception which characterized in that: the automobile front bumper system comprises a signal acquisition module, a signal transmission module, a main control module, an execution module and an external member module which are sequentially connected, wherein the signal acquisition module comprises a pressure sensor array, an odd number of front pressure sensor arrays are arranged at equal intervals to two sides at a front bumper of an automobile, the same number of rear pressure sensor arrays are arranged at positions corresponding to a rear bumper of the automobile, the signal acquisition module also comprises speed sensors which are arranged at the front side, the rear side, the upper side, the lower side and the left side of the automobile and are used for respectively acquiring resistance, lift force and lateral force, and the signal acquisition module is used for acquiring flow field characteristic signals at the surface of the automobile and transmitting the signals to the main control module through the signal transmission module; the main control module comprises a signal fusion module, a signal filtering module and a signal processing module, the signal fusion module performs fusion processing on the signals obtained by the signal acquisition module through a fusion algorithm, and the calculation formula is as follows
P＝[(pa1-pb1),(pa2-pb2),......,(pan-pbn)]×[α1,α2,......,αn]T (1)
In the formula (1), P is a pressure intensity fusion signal; p is a radical ofanThe signal collected by the nth sensor in the front pressure sensor array; p is a radical ofbnThe signal collected by the nth sensor in the rear pressure sensor array; alpha is alphanWeights of the signals are collected for the nth group of sensors, and
n is the number of sensors and is an odd number greater than 1;
the fusion signal is processed by the signal filtering module to obtain a smooth signal, the signal processing module is used for judging the surrounding flow field environment and the vehicle state of the vehicle according to the smooth signal and outputting a judgment signal, and the calculation formula is as follows:
in the formula (2), F is the resistance borne by the vehicle; p is a pressure intensity fusion signal; a is the vehicle orthographic projection area; λ and γ are vehicle coefficients;
a Kalman filtering algorithm is arranged in the signal fusion module; the judging signal is transmitted to the execution module through the signal transmission module; the main control module processes the transmitted data, judges the surrounding flow field environment and the vehicle state of the vehicle, and drives the external member module through the execution module, wherein the execution module comprises a driving module and a state comparison module, the driving module drives the external member module through an actuator according to the judgment signal, and the state comparison module feeds back the motion of the driving module by acquiring the state information of the external member module, so that the vehicle finally reaches the state with the optimal aerodynamic performance.
2. The active control system of an automotive aerodynamic suite based on flow field sensing of claim 1, characterized by: the measurement accuracy of the pressure sensor used in the signal acquisition module is not lower than 0.1%.
3. The active control system of an automotive aerodynamic suite based on flow field sensing of claim 1, characterized by: the signal transmission module comprises a wireless transmission mode and a wired transmission mode.
4. The active control system of an automotive aerodynamic suite based on flow field sensing of claim 1, characterized by: the main control module and the execution modules adopt a CAN bus communication mode, and each execution module is provided with a node controller.
5. The active control system of an automotive aerodynamic suite based on flow field sensing of claim 1, characterized by: the driving module adopts a steering engine with a self-locking function, and the adjusting precision is 0.2-1.0 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152035.6A CN110920759B (en) | 2019-11-21 | 2019-11-21 | Automobile aerodynamic suite active control system based on flow field sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152035.6A CN110920759B (en) | 2019-11-21 | 2019-11-21 | Automobile aerodynamic suite active control system based on flow field sensing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110920759A CN110920759A (en) | 2020-03-27 |
| CN110920759B true CN110920759B (en) | 2021-02-12 |
Family
ID=69851567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152035.6A Active CN110920759B (en) | 2019-11-21 | 2019-11-21 | Automobile aerodynamic suite active control system based on flow field sensing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110920759B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104670348A (en) * | 2015-02-03 | 2015-06-03 | 刘俊传 | Vehicular turbulent flow device |
| CN107117215A (en) * | 2017-04-28 | 2017-09-01 | 重庆长安汽车股份有限公司 | A kind of body upright post deflector and automobile |
| CN108622213A (en) * | 2017-03-17 | 2018-10-09 | 福特全球技术公司 | Active air dynamical type underbody shield system and up and down balance system method of adjustment |
| CN109906184A (en) * | 2016-10-14 | 2019-06-18 | 沙特基础工业全球技术公司 | Roof pod with movable panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10604197B2 (en) * | 2017-09-25 | 2020-03-31 | GM Global Technology Operations LLC | Downforce feedback systems and control logic for active aerodynamic devices of motor vehicles |
-
2019
- 2019-11-21 CN CN201911152035.6A patent/CN110920759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104670348A (en) * | 2015-02-03 | 2015-06-03 | 刘俊传 | Vehicular turbulent flow device |
| CN109906184A (en) * | 2016-10-14 | 2019-06-18 | 沙特基础工业全球技术公司 | Roof pod with movable panel |
| CN108622213A (en) * | 2017-03-17 | 2018-10-09 | 福特全球技术公司 | Active air dynamical type underbody shield system and up and down balance system method of adjustment |
| CN107117215A (en) * | 2017-04-28 | 2017-09-01 | 重庆长安汽车股份有限公司 | A kind of body upright post deflector and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110920759A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108327714B (en) | Distributed independent drive vehicle control system with active attitude adjustment capability | |
| CN100482483C (en) | Frame integrated rear suspension system | |
| CN107176004B (en) | Suspension control method, suspension control device and vehicle with suspension control device | |
| CN110789288A (en) | Active and passive switchable suspension control system and method | |
| CN110920759B (en) | Automobile aerodynamic suite active control system based on flow field sensing | |
| CN111137136B (en) | Braking response method and system for pure electric vehicle | |
| CN112224212A (en) | Vehicle control system based on road surface condition tactile perception | |
| CN111751118A (en) | Test method for obtaining vehicle primary comfort index | |
| CN113138401A (en) | Method for calculating track deviation rectifying technology in motion process | |
| CN115782709B (en) | Automatic seat adjusting system | |
| CN109816736B (en) | Automatic calibration method and system for vehicle camera and vehicle-mounted control equipment | |
| CN110861462B (en) | Image recognition-based whole vehicle intelligent hybrid suspension coordination control system | |
| CN102207737B (en) | Car noise response type seat adjustment control system and control method thereof | |
| CN116331077A (en) | Automobile seat centrifugal force active compensation control algorithm and vibration isolation system | |
| CN217483569U (en) | Outdoor diversified environment multiple index thing monitoring devices | |
| CN113561726A (en) | Vehicle active obstacle avoidance system | |
| CN209299461U (en) | Car microphone topological structure | |
| CN201787935U (en) | Body-in-white door and window deformation testing device | |
| CN219416712U (en) | Real-time detection system for performance of port oil-to-electricity container tractor | |
| CN209600637U (en) | Instrument desk assembly | |
| CN113147522A (en) | Self-balancing method for automobile seat and self-balancing automobile seat | |
| CN218594079U (en) | Distributed semi-active suspension system | |
| CN106909737B (en) | A kind of flat fore suspension and rear suspension rigidity distribution method for jumping pitching couple movement of control car body | |
| CN112668103A (en) | Method for calculating dynamic characteristics of automobile power assembly-auxiliary frame suspension system | |
| CN109878348A (en) | A kind of kinetic control system and method for antero posterior axis distribution driving electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |