JP7560308B2 - vehicle - Google Patents

Description

The present invention relates to a rectification technology capable of rectifying the airflow around a vehicle, and more specifically, to a vehicle whose behavior can be controlled by rectifying the airflow using a plasma actuator.

Vehicles are indispensable in modern society and have become an important means of transportation in daily life. Such vehicles may be driven in a variety of driving environments. For example, when driving on a bridge or on a windy day, the vehicle's behavior may become unstable due to the influence of crosswinds, etc.

In response to this, in recent years, as exemplified by Patent Document 1, attempts have been made to install plasma actuators using the dielectric barrier discharge (DBD) method (hereinafter, various plasma actuators including the DBD method will be collectively referred to as "PA") in vehicles. Such PAs have a pair of electrodes sandwiching a dielectric material such as resin or ceramic, and generate plasma by applying a high-frequency AC voltage or pulse voltage between these electrodes.

According to Patent Document 1 and Patent Document 2, it is possible to rectify the airflow around the vehicle using the plasma generated by the PA described above. More specifically, for example, Patent Document 1 proposes installing a PA on the A-pillar or fender of the vehicle, and suppressing (rectifying) the separation flow of air flowing around the vehicle by driving the PA.

U.S. Pat. No. 9,821,862 JP 2019-167006 A

Existing technologies, including those described in the above patent documents, do not adequately meet market needs, and the following problems exist. That is, as shown in patent documents 1 and 2, by installing a plasma actuator, it is certainly possible to straighten the airflow around the vehicle and reduce air resistance.

However, existing technologies, including those described in the above patent documents, focus solely on a specific PA and rectify the airflow around that PA. On the other hand, since a vehicle undergoes tilting such as pitch, roll, and yaw while traveling, it can be said that a more comfortable drive could be achieved if at least one of these behaviors could be controlled using the above plasma actuator.

The present invention has been made in consideration of the above-mentioned problems, and aims to provide a vehicle that can improve driving comfort by using a plasma actuator to control at least one of the pitch, roll, and yaw behaviors that occur in the vehicle.

In order to solve the above problems, a vehicle in one embodiment of the present invention is a vehicle comprising: (1) a first plasma actuator installed on one side of the center of a vehicle body, a second plasma actuator installed on the other side of the center, and a control device that controls the drive of the first plasma actuator and the second plasma actuator, respectively, to control the yaw behavior of the vehicle, wherein the one side is the front right side of the vehicle body in the direction of travel of the vehicle, and the other side is the front left side of the vehicle body, and the control device drives the first plasma actuator and the second plasma actuator, respectively, to control the separation of traveling wind passing through the left and right sides of the vehicle, thereby adjusting the pressure balance between the left and right sides, and when the vehicle speed of the vehicle is equal to or greater than a predetermined value, the control device drives the first plasma actuator and the second plasma actuator, and the predetermined value is variable depending on the area in which the vehicle is traveling .

In another embodiment of the present invention, a vehicle includes: (2) a first plasma actuator installed on one side of a center of a vehicle body, a second plasma actuator installed on the other side of the center, and a control device that controls the driving of the first plasma actuator and the second plasma actuator, respectively, to control the rolling behavior of the vehicle, wherein the one side is the top and bottom surfaces of the front and rear portions of the right side of the vehicle body in the direction of travel of the vehicle, and the other side is the top and bottom surfaces of the front and rear portions of the left side of the vehicle body, the control device drives a plurality of the first plasma actuators and a plurality of the second plasma actuators, respectively, to control the separation of wind passing through the left and right sides of the vehicle, thereby adjusting the pressure balance between the right and left sides of the vehicle, and the control device drives the first plasma actuator and the second plasma actuator when the speed of the vehicle is equal to or greater than a predetermined value, and the predetermined value is variable depending on the area in which the vehicle is traveling.

In addition, in the vehicle described in (1) or (2) above, (3) it is preferable to further include a first pressure sensor arranged on the front right side of the vehicle and upstream of the first plasma actuator, and a second pressure sensor arranged on the front left side of the vehicle and upstream of the second plasma actuator, and the control device drives the first plasma actuator and the second plasma actuator based on the respective pressure values at the front right side and the front left side detected by the first pressure sensor and the second pressure sensor respectively arranged upstream.

Furthermore, in the vehicle described in any of (1) to (3) above, (4) it is preferable that the vehicle further includes a third pressure sensor arranged on the front right side of the vehicle downstream from the first plasma actuator, and a fourth pressure sensor arranged on the front left side of the vehicle downstream from the second plasma actuator, and the control device drives the first plasma actuator and the second plasma actuator based on pressure values detected by the third pressure sensor and the fourth pressure sensor, respectively, arranged downstream.

The present invention makes it possible to control airflow separation while a vehicle is moving, thereby improving driving comfort.

1 is a front view of a vehicle with a straightening function according to an embodiment of the present invention; FIG. 2 is a side view of a vehicle with a straightening function. FIG. 2 is a rear perspective view of the vehicle with a straightening function, as viewed obliquely from the rear. FIG. 2 is a functional block diagram of a vehicle with a rectifying function. 4 is a flowchart showing a method for controlling vehicle behavior using a plasma actuator according to an embodiment. 1 is a schematic diagram showing the positional relationship between a pressure sensor and a PA in a vehicle with a rectifying function, and the state of wind received in front of the vehicle. FIG. 13 is a schematic diagram showing a control table of a pressure sensor and a PA used for yaw control and pitch control. 11 is a schematic diagram showing a pressure sensor and a control table of a PA used in roll control. FIG.

Next, a preferred embodiment for carrying out the present invention will be described. Note that, for example, for parts of the driving mechanism of the plasma actuator other than those described in this embodiment, known plasma actuator mechanisms, including those described in the above-mentioned patent documents, may be used. In addition, for vehicle configurations other than those described in detail in this embodiment, known component technologies and mechanisms related to vehicles may be used to supplement the configuration.

[Vehicle 100]
First, a vehicle 100 according to the present embodiment will be described with reference to Figures 1 to 4. Note that the vehicle 100 according to the present embodiment is preferably a four-wheeled vehicle as shown in the figures, but may be applied to other known vehicles such as two-wheeled vehicles. Furthermore, as the four-wheeled vehicle, for example, in addition to gasoline-powered vehicles, hybrid vehicles and electric vehicles equipped with various types of secondary batteries may be applied.

As can be seen from these figures, the vehicle 100 of this embodiment has a rectifying function that rectifies the airflow around the vehicle that becomes turbulent when it is subjected to, for example, a crosswind, and is configured to include at least a plasma actuator 10, sensors 20, and a control device 30.

<Plasma actuator 10>
Plasma actuator 10 has a function of rectifying the airflow around vehicle 100. More specifically, plasma actuator 10 of this embodiment is configured to have a function of separating and rectifying vortex flows generated in a specific portion of vehicle 100. Note that the portion of a vehicle where a vortex flow occurs can take various forms depending on the shape of the vehicle, and the portion can be identified by known wind tunnel experiments, simulations, or the like.

The specific structure of such a plasma actuator 10 is a known plasma actuator disclosed in, for example, Patent Document 1 or Patent Document 2, and in this embodiment, a dielectric barrier discharge (DBD) type plasma actuator can be applied. Note that the plasma actuator 10 of this embodiment is not limited to the DBD plasma actuator described above, and other known PAs may be applied, such as a sliding discharge (SD) type plasma actuator that has been improved to have a larger plasma generation area.

Specifically, the plasma actuator 10 of this embodiment is made up of eight plasma actuators PA1 to PA8 provided at the front and rear of the vehicle 100, respectively.
That is, as can be seen from Figures 1 and 2, in the vehicle 100 of this embodiment, first, at the front of the vehicle 100, four plasma actuators PA1 to PA4 are arranged on the left and right and on the top and bottom so that the front is divided in half in the middle of the vehicle width direction.

More specifically, the plasma actuator PA1 of this embodiment is disposed at the lower right front of the vehicle 100 (e.g., on the right side of the front bumper). The plasma actuator PA2 of this embodiment is disposed at the lower left front of the vehicle 100 (e.g., on the left side of the front bumper). The plasma actuator PA3 of this embodiment is disposed at the upper right front of the vehicle 100 (e.g., near the boundary between the front right fender and the A-pillar). The plasma actuator PA4 of this embodiment is disposed at the upper left front of the vehicle 100 (e.g., near the boundary between the front left fender and the A-pillar).

As can be seen from Figures 2 and 3, four plasma actuators PA5 to PA8 are arranged on the left and right and on the top and bottom at the rear of the vehicle 100, so that the rear is divided in half at the center in the vehicle width direction.

More specifically, the plasma actuator PA5 of this embodiment is disposed at the lower right rear part of the vehicle 100 (e.g., to the right of the rear bumper). The plasma actuator PA6 of this embodiment is disposed at the lower left rear part of the vehicle 100 (e.g., to the left of the rear bumper). The plasma actuator PA7 of this embodiment is disposed at the upper right rear part of the vehicle 100 (e.g., below the C-pillar or the rear left fender). The plasma actuator PA8 of this embodiment is disposed at the upper left rear part of the vehicle 100 (e.g., below the C-pillar or the rear left fender).

The above-mentioned installation of the plasma actuators PA1 to PA8 is just one example, and they may be installed in other locations on the vehicle 100, as long as they can be divided into two pairs in the vehicle width direction, vehicle length direction, and vertical direction.

Here, the plasma actuator 10 of this embodiment includes a first plasma actuator installed on one side of the center of the vehicle body, and a second plasma actuator installed on the other side of the center of the vehicle body. That is, in the vehicle 100 of this embodiment, the rolling behavior, pitching behavior, and yawing behavior that occur in the vehicle 100 are controlled using this pair of plasma actuators (first plasma actuator, second plasma actuator) under the control of the control device 30 described below.

Therefore, when controlling the above-mentioned behavior, the control device 30 selects a pair of plasma actuators from the eight plasma actuators PA1 to PA8 arranged on the vehicle 100 that is appropriate for the target behavior to be controlled.

<In the case of yawing behavior>
More specifically, for example, when controlling the yawing behavior of vehicle 100, as shown in Fig. 1, plasma actuator PA1 arranged at the lower right front of vehicle 100 functions as the above-mentioned first plasma actuator, while plasma actuator PA2 arranged at the lower left front of vehicle 100 functions as the above-mentioned second plasma actuator. Therefore, in this case, as shown in Fig. 4, plasma actuators PA1 and PA2 are set as the control targets in the case of yawing behavior as yaw control system PA10C.

In this embodiment, the plasma actuator 10 is used at the front lower part of the vehicle 100, but the yawing behavior may also be controlled using the front upper part (plasma actuators PA3 and PA4).
In other words, when controlling the yawing behavior of vehicle 100, the aforementioned "one side" is the front right side of the vehicle body in the direction of travel of vehicle 100 (Y direction), and the aforementioned "other side" is the front left side of the vehicle body.
As described below, the control device 30 drives the first plasma actuator (in this case PA1) and the second plasma actuator (in this case PA2) to control the separation of the air flow (driving wind) passing through the left and right sides of the vehicle 100, thereby adjusting the left and right pressure balance in the vehicle.

<In the case of pitching behavior>
2, when controlling the pitching behavior of vehicle 100, plasma actuator PA4 located at the upper left front of vehicle 100 functions as the above-mentioned first plasma actuator, while plasma actuator PA8 located at the upper left rear of vehicle 100 functions as the above-mentioned second plasma actuator. Therefore, in this case, as shown in Fig. 4, plasma actuators PA4 and PA8 are set as the control targets in the case of pitching behavior as pitching control system PA10B.

For example, when controlling the pitching behavior of vehicle 100, the pitching behavior may be controlled using the set of plasma actuators (plasma actuators PA3 and PA7) on the right side of vehicle 100 instead of the left side.
In other words, when controlling the pitching behavior of vehicle 100, the aforementioned "one side" can be said to be the front side of vehicle 100 in the direction of travel based on the center of gravity of vehicle 100, and the aforementioned "other side" can be said to be the rear side of vehicle 100 in the direction of travel based on the center of gravity.
As described below, the control device 30 drives the first plasma actuator (in this case PA4) and the second plasma actuator (in this case PA8) to control the separation of the running wind at the front and rear of the vehicle 100 and adjust the pressure balance between the front and rear of the vehicle.

<In the case of rolling behavior>
1, when controlling the rolling behavior of vehicle 100, plasma actuator PA3 located at the upper right front of vehicle 100 functions as the above-mentioned first plasma actuator, while plasma actuator PA4 located at the upper left front of vehicle 100 functions as the above-mentioned second plasma actuator. Therefore, in this case, as shown in Fig. 4, plasma actuators PA3 and PA4 are set as the control targets in the case of rolling behavior as rolling control system PA10A.

Note that the above is just one example, and for example, when controlling the rolling behavior of the vehicle 100, the pitching behavior may be controlled using a set of plasma actuators at the rear of the vehicle 100 (e.g., plasma actuators PA7 and PA8) rather than at the front. Furthermore, when controlling the rolling behavior of the vehicle 100, for example, the pitching behavior may be controlled using a set of plasma actuators (a set of plasma actuators PA1 and PA2, or a set of plasma actuators PA5 and PA6) located at the lower front or rear.

Furthermore, for example, when controlling the rolling behavior of the vehicle 100, the pitching behavior may be controlled using a set of front and rear plasma actuators (e.g., four plasma actuators PA1, PA2, PA5, and PA6).

In other words, when controlling the rolling behavior of vehicle 100, the aforementioned "one side" refers to at least one of the top and bottom surfaces of the front and rear portions on the right side of the body in the direction of travel of vehicle 100, and the aforementioned "other side" refers to at least one of the top and bottom surfaces of the front and rear portions on the left side of vehicle 100.
As described below, the control device 30 drives one or more first plasma actuators (in this case, at least one of PA1, PA3, PA5 and PA7) and one or more second plasma actuators (in this case, at least one of PA2, PA4, PA6 and PA8) to control the separation of the running wind flowing to the left and right of the vehicle 100 and adjust the pressure balance between the right and left sides of the vehicle 100.

<Sensors 20>
As shown in FIG. 4, the sensors 20 of this embodiment include a vehicle speed sensor V, a pressure sensor S, and the like.
Of these, the vehicle speed sensor V can be, for example, a known sensor capable of measuring the speed of the vehicle 100 while it is traveling. This enables the control device 30 to control the drive of the plasma actuator 10 in accordance with the vehicle speed obtained from the vehicle speed sensor V.

The pressure sensor S is installed on the vehicle 100 so that the detection area is located on the body surface of the vehicle 100, and has the function of detecting the pressure (static pressure) of the airflow that the vehicle 100 receives. There are no particular limitations on the structure of such a pressure sensor S, and various known pressure (static pressure) sensors, such as a diffused semiconductor pressure sensor, can be used.

More specifically, in this embodiment, pressure sensors S are provided corresponding to the plasma actuators 10 described above. That is, as can be seen from FIG. 1, pressure sensor S1 is provided in the lower right front portion of vehicle 100 (e.g., to the right of the front bumper) so as to correspond to plasma actuator PA1.

In this embodiment, the pressure sensor S1 is composed of an upstream pressure sensor S1a capable of detecting the pressure (static pressure) upstream of the plasma actuator PA1, and a downstream pressure sensor S1b capable of detecting the pressure (static pressure) downstream of the plasma actuator PA1. As a result, in this embodiment, as shown in Figures 1 to 3, it is possible to measure the static pressures by the respective pressure sensors S1 to S8 on the upstream and downstream sides of each of the plasma actuators PA1 to PA8.

<Control device 30>
The control device 30 has a function of controlling the driving of the first plasma actuator and the second plasma actuator, respectively, to control at least one of the pitch behavior, roll behavior, and yaw behavior of the vehicle 100.
A specific example of the control device 30 is a known integrated circuit (control IC) that is powered by a battery (not shown), such as a known lithium ion secondary battery or a nickel metal hydride battery, mounted on the vehicle 100. The control device 30 of this embodiment may also include a memory (not shown) that stores a control program that can execute a rectification method, which will be described later.

Such a control device 30 has the function of generating high-frequency signals that drive each of the above-mentioned plasma actuators 10 (plasma actuators PA1 to PA8). More specifically, the control device 30 of this embodiment is configured to include a known inverter element that converts the DC voltage of the battery described above into AC voltage.

The battery described above has the function of supplying the necessary power to the plasma actuator 10 and the sensors 20. The battery in this embodiment may be any other known battery, such as a lead acid battery or a nickel-metal hydride battery, as long as it is capable of boosting the voltage to the driving voltage of the plasma actuator.

The control device 30 of this embodiment preferably includes a known boost circuit that boosts the voltage from the battery to a voltage at which the plasma actuator can be driven. Alternatively, a known boost circuit may be provided separately between the control device 30 and the PA group 10 (first PA11 to eighth PA18). More specifically, the boost circuit of this embodiment may be a known transformer that boosts a voltage of, for example, 24 V (as another example, 120 V in an EV high voltage system) to several thousand to tens of thousands of V. The plasma actuator 10 of this embodiment is a known plasma actuator that can be driven at several hundred V, but the boost ratio provided by the boost circuit described above can be changed as appropriate depending on the value of the drive voltage of the plasma actuator.

More specifically, as shown in FIG. 4 , the control device 30 of this embodiment includes a pressure difference detection unit 31 , a speed information acquisition unit 32 , a calculation unit 33 , a PA drive control unit 34 , and a presentation unit 35 .
Of these, the pressure difference detection unit 31 has a function of receiving pressure (static pressure) information from the pressure sensor S at each installation location of the vehicle 100 .
Further, the speed information acquisition unit 32 has a function of receiving vehicle speed information from the vehicle speed sensor V described above while the vehicle 100 is traveling.

As described below, the calculation unit 33 has a function of calculating, for example, the difference in pressure (static pressure) between each of the plasma actuator pairs in the target behavior to be controlled.
The PA drive control unit 34 has a function of controlling the drive of the plasma actuators 10 (PA1 to PA8) via the above-mentioned boost circuit, etc. In addition to this embodiment, the drive control of the plasma actuators may be performed using a known control mechanism for the plasma actuator.
The presentation unit 35 presents setting screens for various equipment installed in the vehicle 100 via the presentation device DS described later, and also has the function of presenting the driving status and behavior control status of the above-mentioned plasma actuator 10 to the occupants.

The external communication device CS can be, for example, a known communication device that can communicate various types of information with the outside world using packet communication using the above-mentioned smartphone or next-generation automotive wireless communication technology, such as connected services.

The storage device MR can be, for example, a known recording device/storage device such as a hard disk drive or non-volatile memory, and is a means capable of recording various information including a control table to be described later.
The navigation device NS can be, for example, a known navigation system equipped with a GPS function, and is capable of detecting position information of the vehicle 100 in cooperation with the above-mentioned control device 30. Furthermore, the navigation device NS stores map information (not shown), and the control device 30 can detect the absolute position of the vehicle by referring to the map information.

In this embodiment, the presentation device DS is configured to include a known speaker SP and display DP mounted on the vehicle. Of these, the display DP may also be used as a monitor for the navigation device NS. In addition, the presentation device DS of this embodiment may be configured to be capable of short-range wireless communication with a portable device such as a smartphone owned by the occupant.

[Method of controlling vehicle behavior using plasma actuator]
5 to 8, a method for controlling vehicle behavior using a plasma actuator executed by the control device 30 in this embodiment will be described. In the following, yawing behavior will be described as an example of a target behavior controlled by the vehicle 100. However, as described above, the present invention is not limited to yawing behavior, and can be similarly applied to pitching behavior and rolling behavior.

As shown in FIG. 5, in step 1, the vehicle speed is detected by the vehicle speed sensor V of the vehicle 100.
Next, in step 2, the control device 30 determines whether the current vehicle speed detected in step 1 is equal to or greater than a predetermined value. This makes it possible to stop driving the plasma actuator 10, for example, at low speeds where the effect of airflow is relatively gentle, thereby achieving the above-mentioned energy saving of the battery.

Note that steps 1 and 2 are not essential and may be omitted as appropriate. In this case, regardless of the speed of the vehicle 100, it is possible to execute PA (plasma actuator) output control based on the pressure difference described below, feedforward PA output control based on an upstream pressure sensor, or feedback PA output control based on a downstream pressure sensor.

The "predetermined value" in step 2 can be set to various values depending on the type of vehicle 100, the region in which the vehicle is traveling, etc. As an example, in this embodiment, a speed of 50 km/h is set, and the operation of the plasma actuator 10 is stopped when the vehicle speed is below 50 km/h. The control device 30 may also refer to map information from the navigation device NS and vary the "predetermined value" according to the current location of the vehicle 100. This makes it possible to set a "predetermined value" according to the region when traveling in a region where strong winds are likely to occur, such as a valley or basin, thereby further improving driving comfort.

If the current vehicle speed is equal to or greater than a predetermined value in step 2 (Yes in step 2), the static pressure values are detected in step 3 using the pressure sensor S described above.
Next, in step 4, it is detected whether or not the pressure difference in the pressure sensors S corresponding to the pair of plasma actuators (PA) is equal to or greater than a specified value.

As an example, a specific example in the case of controlling yawing behavior is shown in FIG.
6B and 6C, the behavior of the vehicle 100 changes when the vehicle 100 is subjected to wind while traveling straight ahead and when it is subjected to a crosswind. That is, when the vehicle 100 is subjected to a crosswind, a pressure difference occurs between the right front and the left front of the vehicle 100, and the vehicle 100 yawing due to the effect of this pressure difference.

The pressure difference can be obtained, for example, as shown in FIG. 6( a), by measuring the difference between the static pressure value detected by the downstream pressure sensor S1b and the static pressure value detected by the downstream pressure sensor S2b.
Note that the above is just one example, and for example, the pressure difference may be measured based on the difference between the static pressure value detected by the upstream pressure sensor S1a and the static pressure value detected by the upstream pressure sensor S2a.

In the next step 5, the control device 30 refers to the control table of the yawing behavior stored in the memory or the storage device MR and controls the output of the pair of plasma actuator sets according to the pressure difference. At this time, as described above, the pair of plasma actuator sets are each positioned at a separation position where the airflow separates from the vehicle 100.

As an example, a control table for the yawing behavior is shown in FIG.
More specifically, the control device 30 controls the output of the plasma actuators PA1 and PA2 in accordance with the difference (P1-P2) between the static pressure value P1 of the pressure sensor S1 corresponding to the plasma actuator PA1 as the first plasma actuator and the static pressure value P2 of the pressure sensor S2 corresponding to the plasma actuator PA2 as the second plasma actuator.

For example, as shown in FIG. 6(c), when the vehicle 100 is hit by a crosswind and the left and right pressure balance is disrupted, the static pressure value is measured by the pressure sensor S, for example, and the control device 30 determines that the state is pattern 5. The control device 30 then controls the behavior (yawing) of the vehicle 100 in question by relatively increasing the output of the first plasma actuator (PA1) while relatively decreasing the output of the second plasma actuator (PA2) so as to balance the pressure.

In this embodiment, yawing has been described as an example of the target behavior controlled by the control device 30, but when controlling pitching behavior, the control table illustrated in FIG. 7 can be used, and when controlling rolling behavior, the control table illustrated in FIG. 8 can be used.
Further, in this example, the control device 30 controls the yawing behavior, but instead, the yawing, rolling and pitching behaviors may be controlled in parallel, or at least one of these behaviors may be controlled.

The above describes in detail preferred embodiments of the present invention with reference to the attached drawings, but the present invention is not limited to these examples. It is clear that a person with ordinary knowledge in the technical field to which the present invention pertains may attempt further modifications to these embodiments and variations within the scope of the technical ideas described in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

As an example, in the present embodiment, for example, in controlling yawing behavior, a pair of plasma actuators is controlled to detect the pressure difference between the left and right sides and eliminate the pressure difference, but this is not limited to the above embodiment. For example, in controlling yawing behavior, a change in the static pressure value of an upstream sensor (e.g., S1a) on at least one side may be detected, and the output of the corresponding plasma actuator 10 (plasma actuator PA1 in this case) may be controlled in a feedforward manner in response to this change.

In other words, the vehicle 100 in this embodiment further includes a first pressure sensor (e.g., S1a) arranged on the front right side of the vehicle 100 and upstream of the first plasma actuator (e.g., PA1), and a second pressure sensor (e.g., S2a) arranged on the front left side of the vehicle 100 and upstream of the second plasma actuator (e.g., PA2), and it is preferable that the control device 30 drives the first plasma actuator and the second plasma actuator based on the pressure values at the front right side and the front left side detected by the first pressure sensor and the second pressure sensor arranged upstream, respectively.

Furthermore, for example, in controlling yawing behavior, a change in the static pressure value of a downstream sensor (e.g., S2b) on at least one side may be detected, and the output of the corresponding plasma actuator 10 (in this case, plasma actuator PA2) may be feedback-controlled in response to this change.

In other words, the vehicle 100 in this embodiment further includes a third pressure sensor (e.g., S1b) located on the front right side of the vehicle 100 downstream of the first plasma actuator (e.g., PA1), and a fourth pressure sensor (S2b) located on the front left side of the vehicle 100 downstream of the second plasma actuator (e.g., PA2), and the control device 30 preferably drives the first plasma actuator and the second plasma actuator based on the pressure values detected by the third pressure sensor and the fourth pressure sensor, which are respectively located downstream.

In the above embodiment, as shown in Figures 1 to 3, one plasma actuator is installed at each installation location of the vehicle 100. However, the present invention is not limited to this form, and at least one plasma actuator may be installed at each installation location. In other words, at least one of the first plasma actuator and the second plasma actuator in this embodiment may be a form in which two or more plasma actuators are connected in series or parallel.

The specific example given above is an example of control of yawing behavior, but similar control may be performed in the case of pitching behavior or rolling behavior by using the above-mentioned form. Also, in the above-mentioned embodiment, a process is performed to stop the drive of the plasma actuator 10 when the vehicle speed is below a predetermined value, but this is not limited to the above, and the occupant may manually stop the drive of the plasma actuator 10 via the display DP, etc.

10 Plasma actuator 20 Sensors 30 Drive device 100 Vehicle

Claims (4)

A first plasma actuator installed on one side of the center of the vehicle body;
a second plasma actuator disposed on the other side of the center;
a control device that controls the driving of the first plasma actuator and the second plasma actuator to control a yaw behavior of a vehicle;
A vehicle comprising:
the one side is a front right side of the vehicle body in a traveling direction of the vehicle, and the other side is a front left side of the vehicle body,
the control device drives the first plasma actuator and the second plasma actuator, respectively, to control separation of airflow passing through the left and right sides of the vehicle, thereby adjusting the left and right pressure balance ;
the control device drives the first plasma actuator and the second plasma actuator when a vehicle speed of the vehicle is equal to or greater than a predetermined value;
The predetermined value is variable depending on the area in which the vehicle travels . A first plasma actuator installed on one side of the center of the vehicle body;
a second plasma actuator disposed on the other side of the center;
a control device that controls driving of the first plasma actuator and the second plasma actuator to control a rolling behavior of a vehicle;
A vehicle comprising:
the one side is an upper surface and a bottom surface of a front and rear portion on a right side of the vehicle body relative to a traveling direction of the vehicle, and the other side is an upper surface and a bottom surface of a front and rear portion on a left side of the vehicle body,
the control device controls separation of airflow passing through the left and right sides of the vehicle by driving the plurality of first plasma actuators and the plurality of second plasma actuators , thereby adjusting the pressure balance between the right and left sides of the vehicle;
the control device drives the first plasma actuator and the second plasma actuator when a vehicle speed of the vehicle is equal to or greater than a predetermined value;
The predetermined value is variable depending on the area in which the vehicle travels . a first pressure sensor disposed on a front right side of the vehicle and upstream of the first plasma actuator;
a second pressure sensor disposed on the front left side of the vehicle and upstream of the second plasma actuator;
3. The vehicle according to claim 1, wherein the control device drives the first plasma actuator and the second plasma actuator based on pressure values at the front right side and the front left side detected by the first pressure sensor and the second pressure sensor, respectively, arranged upstream. a third pressure sensor disposed on a front right side of the vehicle and downstream of the first plasma actuator;
a fourth pressure sensor disposed on the front left side of the vehicle downstream of the second plasma actuator;
The vehicle according to any one of claims 1 to 3, wherein the control device drives the first plasma actuator and the second plasma actuator based on pressure values detected by the third pressure sensor and the fourth pressure sensor, respectively, arranged downstream.