KR102442016B1 - Variable damper device using vibration characteristics of vehicle and control method thereof - Google Patents

Abstract

The present invention relates to a variable damper device using vibration characteristics of a vehicle and a control method thereof. In addition, the variable damper device comprises: a variable damper unit which is installed on a road, on which vehicles drive, or a bridge to form a ground surface coming in contact with tires of vehicles and has at least a part forming the ground surface and descending according to a control signal so as to form a plurality of vibration control grooves for controlling vehicle vibrations; a vibration characteristic information receiving unit which receives vibration characteristic information from an entering vehicle; and a control unit which checks the number of unique vibrations of the entering vehicle based on the received vibration characteristic information and determines the number and intervals of the vibration control grooves to be formed on the ground surface according to a frequency band of the checked number of the unique vibrations so as to output the control signal to the variable damper unit. The present invention can reduce the amount of shocks caused by resonance by controlling the number of unique vibrations of the vehicle passing through the plurality of vibration control grooves.

Description

Variable damper device using vibration characteristics of vehicle and control method thereof

The present invention relates to a variable damper device using vibration characteristics of a vehicle and a method for controlling the same.

In general, vibrations occur in an engine and a dynamometer of a vehicle, and vibrations may occur depending on road driving conditions.

For example, when the vehicle travels on a paved road, an unpaved road, and an uneven road, vibration characteristics such as a small vibration occurs on an unpaved road compared to a paved road, and the vibration of the axle is greatly increased on an uneven road compared to a paved road will show In addition, when the vehicle speed is high, vibration is increased, and when the road surface condition is poor, vibration is greatly generated.

In this way, vibration generated during vehicle driving may cause adverse effects such as applying an impact or increasing the amount of impact while resonating with a road or bridge, and may cause damage or shorten the life of the road or bridge due to the accumulated impact. can

In addition, when a sensor device for cracking down on a freight vehicle or an overloaded vehicle is buried in the road, the lifespan of the sensor device may be shortened or malfunction may occur due to the impact applied to the vehicle while passing.

Therefore, in order to reduce the fatigue of the road or bridge, it is necessary to adjust the natural frequency of the vehicle so that resonance between the vehicle and the road and the vehicle and the bridge does not occur. There is a problem that cannot be done.

The present invention has been devised in view of the above problems, and a variable damper device using vibration characteristics of a vehicle that can control the vibration of a vehicle by changing an interval of a tire tread according to the vibration characteristics of an entering vehicle, and a method for controlling the same Its purpose is to provide

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The present invention for achieving the above object is installed on a road or bridge on which a vehicle travels to form a ground plane in contact with the tire of the vehicle, and at least a portion forming the ground plane is lowered according to a control signal to control vehicle vibration a variable damper unit forming a plurality of vibration control grooves for a vibration characteristic information receiving unit for receiving vibration characteristic information from an entering vehicle; and a control signal to the variable damper unit by determining the natural frequency of the vehicle entering based on the received vibration characteristic information, and determining the number and spacing of vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency. It provides a variable damper device using the vibration characteristics of the vehicle including; a control unit for outputting.

In a preferred embodiment, the vibration characteristic information includes information on a natural frequency determined by at least one of a vehicle loading weight, an axle weight, a traveling speed, a center of gravity, a suspension characteristic, and a driving road slope.

In a preferred embodiment, when determining the interval of the vibration control groove, the control unit forms a wider interval of the vibration control groove in the low frequency band than in the high frequency band.

In a preferred embodiment, the control unit controls the variable damper unit so that each vibration control groove is sequentially arranged spaced apart by the same interval.

In a preferred embodiment, the variable damper unit includes: a plurality of damper blocks extending in a transverse direction of a road or a bridge, forming a ground plane or unevenness in contact with a tire of a vehicle when ascending and descending, and forming a vibration control groove when descending; a plurality of support parts supporting each damper block from a lower portion, elevating each damper block when air is supplied from the outside, and lowering each damper block when the supplied air is discharged; and an air chamber for supplying air to each support unit according to a control signal from the control unit.

In addition, the present invention provides a control method of a variable damper device performed in a variable damper device using vibration characteristics of a vehicle, comprising: a receiving step of receiving vibration characteristic information from an entering vehicle; a confirmation step of confirming a natural frequency of an entering vehicle based on the received vibration characteristic information; A determining step of determining the number and spacing of the vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency; and a control step of forming a plurality of vibration control grooves for controlling vehicle vibration by controlling the variable damper unit according to the determined number and spacing of the vibration control grooves. do.

In a preferred embodiment, the variable damper unit is installed on a road or a bridge on which a vehicle travels to form a ground plane in contact with the tire of the vehicle, and in the control step, the variable damper unit forms a ground plane according to a control signal. At least a portion is lowered to form a plurality of vibration control grooves.

In a preferred embodiment, the vibration characteristic information includes information on a natural frequency determined by at least one of a vehicle loading weight, an axle weight, a traveling speed, a center of gravity, a suspension characteristic, and a driving road slope.

In a preferred embodiment, in the determining step, when determining the spacing of the vibration control grooves, the interval of the vibration control grooves is formed wider in the low frequency band than in the high frequency band.

In a preferred embodiment, in the controlling step, the variable damper unit is controlled so that each vibration control groove is spaced apart by the same interval and sequentially arranged.

By means of the above-described problem solving means, the present invention receives vibration characteristic information from an entering vehicle, checks the natural frequency, and forms a plurality of vibration control grooves for controlling vehicle vibration according to the frequency band of the identified natural frequency, There is an effect that can control the natural frequency of the vehicle passing through the vibration control groove of the

In addition, the present invention has the effect of attenuating the amount of impact caused by resonance by adjusting the natural frequency of a vehicle entering a road or bridge in which the sensor device is buried.

1 and 2 are views for explaining a variable damper device according to an embodiment of the present invention.
3 is a view for explaining a variable damper unit according to an embodiment of the present invention.
4 is a view for explaining an operating state of a variable damper unit according to an embodiment of the present invention;
5 is a view for explaining a control method of a variable damper device according to an embodiment of the present invention.

In the following description, specific details of the invention are set forth in order to provide a general understanding of the invention, but it is common knowledge in the art that the invention may be readily practiced without these specific details and with variations thereof. It will be self-evident to those who have

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings 1 to 5, but mainly the parts necessary for understanding the operation and operation according to the present invention.

1 and 2 are views for explaining a variable damper device according to an embodiment of the present invention, FIG. 3 is a view for explaining a variable damper unit according to an embodiment of the present invention, and FIG. It is a view for explaining an operation state of the variable damper unit according to an embodiment.

1 to 4 , the variable damper device 100 according to an embodiment of the present invention includes a vibration characteristic information receiving unit 110 , a variable damper unit 120 , and a control unit 130 .

Here, the variable damper device 100 according to an embodiment of the present invention may be installed on a road or a bridge 20 on which the vehicle 10 travels. In particular, a sensor device for controlling a cargo vehicle or an overloaded vehicle is provided. It may be buried at the entrance of the buried road or bridge 20 .

In addition, the variable damper device 100 according to an embodiment of the present invention generates vibrations in the vehicle 10 passing thereon by forming vibration control grooves and irregularities on the ground surface in contact with the tire of the vehicle 10 . It is possible to change the natural frequency of the vehicle 10 .

For this reason, the natural frequency of the vehicle 10 entering the road or bridge 20 in which the sensor device is buried is adjusted so that resonance between the road and the vehicle 10 or the bridge 20 and the vehicle 10 does not occur. Thus, the amount of impact caused by resonance can be attenuated.

In addition, FIG. 1 shows that one variable damper device 100 is installed at the entrance of the bridge 20. In addition, a plurality of variable damper devices 100 are provided and installed at regular intervals. it might be

The vibration characteristic information receiving unit 110 receives the vibration characteristic information from the vehicle 10 entering.

The vibration characteristic information receiving unit 110 is provided to communicate with a communication device mounted on the vehicle 10 using wireless communication, and in particular, a short-range wireless communication module for receiving vibration characteristic information using short-range wireless communication. can be provided with

In addition, the above-described vibration characteristic information is information that is measured in the vehicle 10 itself and transmitted to the outside, and is uniquely determined by at least one of a loading weight, an axle weight, a driving speed, a center of gravity, a suspension characteristic, and a driving road slope. It may be information about the vibration frequency.

For reference, the vehicle 10 is equipped with a weight measuring device to measure the load weight and the axle weight, and the driving speed, the center of gravity and the suspension characteristics can be checked using the pre-mounted controller (ECU), and the inclination The inclination of the driving road may be measured using the measuring device or the inclination sensor, and a natural frequency generated in the process of driving the vehicle 10 may be confirmed based on the measured information.

In addition, a separate device for analyzing vibration characteristic information may be mounted on the vehicle 10 , or various conventionally known measuring devices may be used.

The variable damper unit 120 is installed on the road or bridge 20 on which the vehicle 10 travels and generates vibration in the vehicle 10 passing over it so that the natural frequency of the vehicle 10 can be modified. do.

The variable damper unit 120 normally forms a ground plane in contact with the tire of the vehicle 10 , and at least a portion forming the ground plane is lowered according to a control signal from the controller 130 to be described later to the vehicle 10 . ) may be provided to form a plurality of vibration control grooves for controlling vibration.

Also, as shown in FIG. 3 , the variable damper part 120 may include a plurality of damper blocks 121 , a plurality of support parts 122 , and an air chamber 123 .

The plurality of damper blocks 121 are formed in a form extending in the transverse direction of the road or bridge 20, are sequentially arranged in the longitudinal direction of the road or bridge 20, and the tire of the vehicle 10 is in contact with the vehicle 10 when ascending and descending. It forms a ground plane or unevenness, and is provided to form a vibration control groove when descending.

These damper blocks 121 are preferably provided in a plate shape having a predetermined thickness to withstand the load of the vehicle 10, and all damper blocks 121 have the same size so that the damper blocks 121 have the same size. It is preferable to allow the vibration control grooves formed by the vibration control to form a constant interval.

The plurality of support parts 122 support each damper block 121 from the lower part. When air is supplied from the outside, each damper block 121 is raised and lowered to support it, and when the supplied air is discharged, each damper block 121 is provided. ) can be lowered.

The plurality of support parts 122 may be provided in the form of a cylinder or an air tube, and in addition, various means for supporting or pushing up an object using air may be utilized.

The air chamber 123 is for supplying air, and may be provided to supply air to each support part 122 according to a control signal from the controller 130 .

The air chamber 123 and the plurality of support parts 122 are connected through an air pipeline, and may include one air pipeline connected to the plurality of support parts 122 , and each support part 122 is connected to each other. A plurality of air pipelines to be connected may be provided.

In addition, in the air pipeline, a valve (not shown) that opens and closes to supply air or to prevent the supplied air from being discharged may be provided for each support part 122 .

The control unit 130 controls the variable damper unit 120 according to the vibration characteristic information received from the vibration characteristic information receiving unit 110 .

Specifically, the controller 130 checks the natural frequency of the vehicle 10 entering based on the received vibration characteristic information, and the number and spacing of the vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency. , and may output a control signal to the air chamber 123 of the variable damper unit 120 to lower the damper blocks 121 corresponding to the determined number and spacing of the vibration control grooves.

In addition, when controlling the variable damper unit 120 , the control unit 130 may control the vibration control grooves to be sequentially arranged while being spaced apart by the same interval.

In addition, when determining the interval between the vibration control grooves, the controller 130 may control the air chamber 123 of the variable damper unit 120 so that the interval between the vibration control grooves is widened in the low frequency band compared to the high frequency band.

For example, as shown in (a) of FIG. 4 , when it is confirmed that the natural frequency of the vehicle 10 belongs to a high frequency band, the control unit 130 regulates vibration having an interval of one damper block 121 . The variable damper unit 120 may be controlled to form six grooves.

At this time, the controller 130 controls the second damper block 121b, the fifth damper block 121e, the eighth damper block 121h, and the eleventh damper block 121 among the damper blocks 121 of the variable damper unit 120. 121k), the fourteenth damper block 121n and the seventeenth damper block 121q are lowered to form six vibration control grooves, the first damper block 121a, the third damper block 121c, and the fourth damper block (121d), sixth damper block (121f), seventh damper block (121g), ninth damper block (121i), tenth damper block (121j), twelfth damper block (121l), thirteenth damper block (121m) ), the fifteenth damper block 121o, the sixteenth damper block 121p, and the eighteenth damper block 121r are controlled to maintain an elevated state to form concavities and convexities dividing each vibration control groove, thereby A high-frequency vibration may be transmitted to a passing vehicle 10 .

In addition, as shown in (b) of Figure 4, when it is confirmed that the natural frequency of the vehicle 10 belongs to the intermediate band, the control unit 130 generates a vibration control groove having an interval of two damper blocks 121. Control the variable damper unit 120 to form six.

In this case, the controller 130 controls the second damper block 121b, the third damper block 121c, the fifth damper block 121e, and the sixth damper block among the damper blocks 121 of the variable damper unit 120 . (121f), eighth damper block (121h), ninth damper block (121i), eleventh damper block (121k), twelfth damper block (121l), fourteenth damper block (121n), fifteenth damper block ( 121o), the seventeenth damper block 121q and the eighteenth damper block 121r are lowered to form six vibration control grooves, the first damper block 121a, the fourth damper block 121d, and the seventh damper Block (121g), the tenth damper block (121j), the thirteenth damper block (121m), and the sixteenth damper block (121p) are controlled to maintain an elevated state to form concavities and convexities dividing each vibration control groove, The vibration of the intermediate band may be transmitted to the vehicle 10 passing through it.

And, as shown in (c) of FIG. 4 , when it is confirmed that the natural frequency of the vehicle 10 belongs to the low frequency band, the control unit 130 has a vibration control groove having an interval of five damper blocks 121 . The variable damper unit 120 may be controlled to form three .

In this case, the control unit 130 controls only the first damper block 121a, the seventh damper block 121g, and the thirteenth damper block 121m from among the eighteen damper blocks 121 provided in the variable damper unit 120 . By controlling to maintain the raised state, and lowering all other damper blocks 121b to 121f, 121h to 121l, and 121n to 121r to form three vibration control grooves, low-frequency vibration is generated in the vehicle 10 passing through them. can be transmitted.

Meanwhile, although eighteen damper blocks 121 are shown in FIGS. 3 and 4 for convenience of explanation, a larger or smaller number of damper blocks 121 may be used.

Hereinafter, a method of controlling the variable damper device 100 according to an embodiment of the present invention will be described.

5 is a view for explaining a control method of the variable damper device 100 according to an embodiment of the present invention.

A method of controlling the variable damper device 100 performed by the variable damper device 100 according to an embodiment of the present invention will be described with reference to FIG. 5 .

However, since all functions performed in the control method of the variable damper device 100 shown in FIG. 5 are performed by the variable damper device 100 described with reference to FIGS. 1 to 4 , even without an explicit explanation, FIGS. 1 to All the functions described with reference to FIG. 4 are performed in the control method of the variable damper device 100 according to the preferred embodiment of the present invention, and all functions described with reference to FIG. 5 are performed by the variable damper according to the preferred embodiment of the present invention. It should be noted that it is performed as it is in the device 100 .

First, the vibration characteristic information receiving unit 110 of the variable damper device 100 receives the vibration characteristic information from the vehicle 10 entering (S100).

In step S100 , the vibration characteristic information receiving unit 110 may receive vibration characteristic information by communicating with a communication device mounted on the vehicle 10 through short-range wireless communication.

Here, the above-described vibration characteristic information may include information on a natural frequency determined by at least one of a loading weight, an axle weight, a traveling speed, a center of gravity, a suspension characteristic, and a driving road slope of the vehicle 10 .

In addition, the vehicle 10 may be equipped with a separate device for analyzing the vibration characteristic information or may measure the natural frequency by using various conventionally known measuring devices.

Next, the control unit 130 of the variable damper device 100 checks the natural frequency of the vehicle 10 entering the vehicle 10 based on the received vibration characteristic information (S200).

In this case, the controller 130 may check whether the natural frequency of the vehicle 10 entering the vehicle 10 belongs to a high frequency band, an intermediate band, or a low frequency band.

Next, the control unit 130 determines the number and spacing of the vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency (S300).

In step S300, the control unit 130 determines whether the natural frequency belongs to a high frequency band, an intermediate band, or a low frequency band, and determines the number and spacing of the vibration control grooves according to the checked frequency band. The interval between the vibration control grooves can be widened in the band.

Next, the controller 130 controls the variable damper unit 120 according to the determined number and spacing of the vibration control grooves to form a plurality of vibration control grooves for controlling the vibration of the vehicle 10 ( S400 ).

In step S400 , the variable damper unit 120 is installed on a road or bridge 20 on which the vehicle 10 travels to form a ground plane in contact with the tire of the vehicle 10 , and according to a control signal from the control unit 130 . At least some of the damper blocks 121 forming the ground plane descend to form a plurality of vibration control grooves.

In this case, the control unit 130 may control the variable damper unit 120 such that the respective vibration control grooves are sequentially spaced apart by the same interval.

In addition, in step S400 , when it is confirmed that the natural frequency of the vehicle 10 belongs to the high frequency band, the control unit 130 forms six vibration control grooves having an interval equal to one damper block 121 , the variable damper unit 120 . ), and when it is confirmed that the natural frequency of the vehicle 10 belongs to the intermediate band, the variable damper unit 120 is controlled to form six vibration control grooves having an interval of two damper blocks 121, and the vehicle When it is confirmed that the natural frequency of (10) belongs to the low frequency band, the variable damper unit 120 may be controlled to form three vibration control grooves having an interval of five damper blocks 121 .

In the above, preferred embodiments of the present invention have been exemplarily described, but the scope of the present invention is not limited to such specific embodiments, and can be appropriately changed within the scope described in the claims.

100: variable damper device
110: vibration characteristic information receiving unit
120: variable damper part
121: damper block
122: support
123: air chamber
130: control unit

Claims (10)

Variable that is installed on a road or bridge on which a vehicle travels to form a ground plane in contact with the tire of the vehicle, and at least a portion forming the ground plane is lowered according to a control signal to form a plurality of vibration control grooves for controlling vehicle vibration damper part;
a vibration characteristic information receiving unit for receiving vibration characteristic information from an entering vehicle; and
Check the natural frequency of the vehicle entering based on the received vibration characteristic information, determine the number and interval of vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency, and apply a control signal to the variable damper unit. a control unit for outputting; and
The variable damper part,
A plurality of damper blocks extending in the transverse direction of the road or bridge, forming a ground plane or unevenness in contact with the tire of the vehicle when ascending and descending, and forming a vibration control groove when descending;
a plurality of support parts supporting each damper block from a lower portion, elevating each damper block when air is supplied from the outside, and lowering each damper block when the supplied air is discharged; and
and an air chamber for supplying air to each support unit according to a control signal from the control unit.
The method of claim 1,
The vibration characteristic information,
A variable damper device using vibration characteristics of a vehicle, characterized in that it includes information on a natural frequency determined by at least one of a vehicle load weight, an axle weight, a traveling speed, a center of gravity, a suspension characteristic, and a driving road slope.
The method of claim 1,
The control unit is
A variable damper device using vibration characteristics of a vehicle, characterized in that when the interval between the vibration control grooves is determined, the interval between the vibration control grooves is formed wider in the low frequency band than in the high frequency band.
The method of claim 1,
The control unit is
A variable damper device using vibration characteristics of a vehicle, characterized in that the variable damper unit is controlled so that each vibration control groove is sequentially arranged at the same distance apart.
delete A control method of a variable damper device performed in a variable damper device using vibration characteristics of a vehicle, the control method comprising:
A receiving step of receiving vibration characteristic information from an entering vehicle;
a confirmation step of confirming a natural frequency of an entering vehicle based on the received vibration characteristic information;
A determining step of determining the number and spacing of the vibration control grooves to be formed in the ground plane according to the frequency band of the identified natural frequency; and
A control step of forming a plurality of vibration control grooves for controlling vehicle vibration by controlling the variable damper according to the determined number and spacing of the vibration control grooves;
The variable damper part is installed on a road or a bridge on which the vehicle travels to form a contact surface with the tire of the vehicle,
In the control step, the variable damper unit,
A control method of a variable damper device using vibration characteristics of a vehicle, characterized in that at least a portion forming a ground plane is lowered according to a control signal to form a plurality of vibration control grooves.
delete 7. The method of claim 6,
The vibration characteristic information,
A variable damper device using vibration characteristics of a vehicle, characterized in that it includes information on a natural frequency determined by at least one of the vehicle's load weight, axle weight, traveling speed, center of gravity, suspension characteristics, and driving road slope. control method.
7. The method of claim 6,
The determining step is
A control method of a variable damper device using vibration characteristics of a vehicle, characterized in that when the interval of the vibration control groove is determined, the interval of the vibration control groove is formed wider in a low frequency band than in a high frequency band.
7. The method of claim 6,
The control step is
A control method of a variable damper device using vibration characteristics of a vehicle, characterized in that the variable damper unit is controlled so that each vibration control groove is sequentially arranged at the same distance.

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