KR100559529B1 - Vehicle's attitude adjusting apparatus - Google Patents

Abstract

The present invention uses the induced electromotive force generated in the induction electromotive force sensing means to detect the front and rear tilt of the vehicle generated by the vehicle turning and sudden stop of the vehicle generated by the turning of the vehicle, and according to the detected front and rear and left and right tilt It provides a vehicle attitude control device that controls the height of the suspension of the vehicle to keep the vehicle level and comfortable driving.

Suspension, tilt sensor, induction electromotive force

Description

Vehicle attitude adjusting apparatus {Vehicle's attitude adjusting apparatus}

Figure 1a is a view showing the configuration of a tilt sensor of a vehicle used in the present invention.

Figure 1b is a perspective view showing the configuration of a second member used in the tilt sensor of the vehicle used in the present invention.

Figure 2 is a block diagram showing a connection state of the attitude control device and the tilt sensor of the vehicle according to the present invention.

3A, 3B, and 3C are diagrams illustrating an operation state of a tilt detection sensor according to a change in left and right tilt of the vehicle.

4A, 4B, and 4C are diagrams illustrating an operating state of the inclination detection sensor according to the change of the front and rear inclination of the vehicle.

* Explanation of symbols for main parts of the drawings

10; Tilt sensor 12; A first member;

14; Second member 20; AC electromagnet

30; Induction electromotive force sensing means 40; Control unit

50; Step motor

The present invention relates to a vehicle attitude control device, and in particular, to detect a sudden change in the inclination of the vehicle due to the turning direction of the vehicle or the sudden stop of the vehicle and to maintain the vehicle horizontally by controlling the suspension of the vehicle after the detection. It relates to a vehicle attitude control device.

Suspension devices generally applied to automobiles are devices that connect axles and frames and absorb vibrations and shocks received from the road surface while driving to improve ride comfort and stability.

Therefore, the suspension device should be flexible in the up and down direction to alleviate the impact from the road surface, and should be firmly connected in the horizontal direction to overcome the driving force, braking force, centrifugal force during turning, and the like.

These suspensions are classified into various types according to their structural characteristics, and elements having the most ideal geometric characteristics are selectively applied to vehicles. In the case of passenger cars, both wheels operate independently by dividing the axles. Independent suspension with good ride comfort and stability is applied.

Thus, the suspension of the vehicle is mounted so that the trailing arm can pivot in the vertical direction to the cross member mounted to the vehicle body, the wheel is mounted to the tip of the trailing arm via the knuckle. A shock absorber is installed on the upper side of the trailing arm to reduce the transmission of the impact force of the wheels and the road surface to the vehicle body.

By the way, the mechanical suspension has a fixed spring constant and damping coefficient of the shock absorber, which improves runability and stability with an optimal design for linear driving. However, when steering, one side of the vehicle is inclined to reduce riding comfort. .

In addition, when the vehicle is suddenly stopped while driving in a straight line, or when driving on a place where the height of the road surface is not constant, the height of the front or rear portion of the vehicle is changed drastically, which causes the body of the vehicle occupant There was a problem with the panel.

In order to solve the above problems, the present invention efficiently detects a change in the tilt of the vehicle during turning or sudden stop of the vehicle and adjusts the height of the suspension of the vehicle according to the detected left and right and front and rear tilt changes of the vehicle driver. An object of the present invention is to provide a vehicle posture control device which prevents a body from being inclined so that a driver of a vehicle can drive while feeling comfortable.

The present invention to achieve the above object, the inclination detection sensor installed in the vehicle; A control unit configured to detect the inclination of the vehicle by receiving the detection information of the inclination detection sensor; It provides a vehicle attitude control device comprising a hydraulic cylinder for adjusting the height of the suspension in accordance with the signal of the control unit.

According to the invention, the inclination detection sensor, the fixed first member; A second member moving according to left and right and front and rear tilts of the vehicle; And sensing means installed on the first member or the second member to sense a distance between the first member and the second member.

In addition, the second member is rotatably coupled to the first member to rotate so that the distance between the first member and the second member is closer or farther according to the vehicle tilt change, the sensing means is the first A magnet installed on one of the member and the second member, and an induction electromotive force sensing means formed of a coil wound around the magnet on the other, and the induction electromotive force sensing means is connected to the magnet. And configured to input into the control unit an induction current generated by an induction electromotive force generated as the distance changes.

In particular, the magnet is composed of an iron core and a coil wound around it, it is preferable that the coil is formed of an electromagnet to which power is applied through an alternator.

The present invention provides a tilt sensor for sensing the tilt of the vehicle, to achieve another object, the first member is fixed; A second member rotatably coupled to the first member to rotate according to the front, rear, left, and right tilts of the vehicle so that the distance from the first member is closer or further away from the first member; A magnet installed on one of the first member and the second member; And an induction electromotive force sensing means formed of a coil wound around the magnet, the first member and the second member being provided toward the magnet.

Preferably, the magnet is composed of an iron core and a coil wound thereon, and the coil is composed of an electromagnet to which power is applied through an alternator.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A is a view showing the configuration of a tilt sensor of a vehicle according to the present invention, and FIG. 1B is a perspective view showing the configuration of a second member used in the tilt detection sensor of a vehicle according to the present invention. 2 is a block diagram of a vehicle attitude control device according to the present invention.

Referring to FIG. 1A, the inclination sensor 10 of the vehicle according to the present invention is formed with a fixed first member 12 and a '+' shape to be fixed to the first member 10, and the left and right sides of the vehicle And a second member 14 and a magnet and inductive electromotive force sensing means which move according to the change of the front and rear inclination.

In this case, the second member 14 is rotatably coupled to the central portion of the first member 12 and rotates according to the change of the left and right and front tilt angles of the vehicle, thereby allowing the first member 12 and the second member 14 to be interposed therebetween. The distance of is configured to get closer or further away according to the change of the tilt of the vehicle.

At this time, in order to easily measure the change in the inclination according to the left and right and front and rear inclination change of the vehicle, as shown in FIG. It consists of a front and rear sensor 14b for sensing.

A magnet is installed in any one selected from the first member 12 and the second member 14. In this embodiment, a magnet is installed in the fixed first member 12. The magnet may be a permanent magnet, but in the present embodiment, the magnet is formed of an iron core and a coil, and a power source generated from the alternator of the vehicle is applied to the coil to form a magnet. In particular, since the inclination detection sensor installed in the vehicle is for determining the inclination of the vehicle while driving, it is preferable to connect to an alternator that generates power only while driving so that the power is not used when the vehicle does not travel.

At the ends of the left and right sensors 14a and the front and rear sensors 14b constituting the second member 14, an induction electromotive force sensing means 30 composed of a coil 34 wound around the cylindrical member 32 is provided with an AC electromagnet 20. These are installed toward each other to form a left and right sensor 14a and a front and rear sensor 14b. Induction electromotive force detecting means 30, the magnetic flux passing through the coil changes when the distance to the AC electromagnet 20 is changed according to the electromagnetic induction phenomenon, the induced electromotive force (V) is generated in the coil, and the induced electromotive force ( V) is calculated by Faraday's law.

That is, the induced electromotive force sensing means 30 and the change according to the change of the angle θ between the left and right sensors 14a and the front and rear sensors 14b of the first member 12 and the second member 14, that is, the inclination angle, The distance between the alternating current electromagnets 20 is variable, and different induced electromotive force is generated by Faraday's law.

The inclination sensor according to the present invention is configured to accurately measure the inclination of the vehicle by using the change of the induced electromotive force according to the change of the magnetic flux passing through the coil of the induction sensing means according to the change of the inclination.

Referring to FIG. 2, the vehicle attitude control apparatus according to the present invention detects the inclination of the vehicle using the inclination monitoring sensor 10, and inputs the detection information to the control unit 40 to control the unit 40. By controlling the hydraulic valve 50 for supplying the hydraulic pressure to adjust the degree of expansion and contraction of the hydraulic cylinder 60 installed on the upper portion of the suspension 100 of the vehicle is configured to be able to adjust the height of the suspension (100).

 The inclination monitoring sensor 10 according to the present invention may be used a conventional inclination monitoring sensor, according to an embodiment of the present invention, the fixed first member 12, and moving according to the front and rear and left and right tilt of the vehicle It is composed of a second member 14, the sensing means for sensing the distance between the first member 12 and the second member 14 between the first member 12 and the second member 14 It is configured to detect the front, rear, left and right tilts of the vehicle by sensing the distance.

Preferably, the second member 14 is rotatably coupled about the central axis of the first member 12 so that the second member 14 and the first member 12 and the first member 12 rotate as the vehicle is inclined. The distance between the left and right sensors 14a and the front and rear sensors 14b of the two members 14 is configured to be variable.

That is, when the vehicle travels in parallel, the second member 14 maintains the horizontal state so that the first member 12 and the second member 14 maintain 90 °. When the inclination changes, the second member 14 is also rotated so that the distance between the left and right sensors 14a and the front and rear sensors 14b of the first member 12 and the second member 14 changes.

Therefore, the control part 44 compares the inclination input from the calculating part 42 with the preset data, and determines the adjustment state of the hydraulic valve 50, and controls the hydraulic valve 50 accordingly. The height of the suspension and the setting of the hydraulic valve 50 according to the inclination set in the control unit 44 are determined in consideration of the characteristics of the vehicle, the characteristics of the suspension, and the like. The control unit 40 may be one computer device that integrally performs the functions of the calculator 42 and the controller 44.

An amplifier 41 is provided between the control unit 40 and the induced electromotive force detecting means 30 to amplify the voltage of the induced electromotive force generated in the induced electromotive force detecting means.

Therefore, the control part 44 compares the inclination input from the calculating part 42 with the preset data, and determines the adjustment state of the hydraulic valve 50, and controls the hydraulic valve 50 accordingly. The height of the suspension and the setting of the hydraulic valve 50 according to the inclination set in the control unit 44 are determined in consideration of the characteristics of the vehicle, the characteristics of the suspension, and the like. The control unit 40 may be one computer device that integrally performs the functions of the calculator 42 and the controller 44.

According to the present invention configured as described above, when the vehicle is traveling in a straight line, the left and right sensors 14a of the second member 14 maintain the horizontal state as shown in FIG. 3A and the first member 12. If the left and right sensors 14a of the second member 14 maintain 90 °, but the left and right inclinations change while the vehicle is turning, the left and right sensors 14a of the second member 14 are rotated according to the inclination of the vehicle, thereby causing the first to be rotated. The angle θ between the member 12 is changed.

That is, when the vehicle turns to the right, the inclination of the left and right sensors 14a of the first member 12 and the second member 14 is changed as shown in FIG. 3B. When the vehicle turns to the left, the height of the left side of the vehicle is lowered, so that the inclination of the left and right sensors 14a of the first member 12 and the second member 14 is changed as shown in FIG. 3C.

As described above, the left and right sensors 14a of the second member 14 rotate to reduce the distance between the first member 12, that is, the angle θ, and thus the induced electromotive force sensing means according to the size of the distance θ. As the magnetic flux passing through the coil 34 of 30 is varied, an induced electromotive force corresponding to the angle θ is generated. The calculation unit 42 calculates the left and right inclination of the vehicle by using the voltage of the induced electromotive force input from the induced electromotive force detecting means 30.

The controller 44 compares the inclination input from the calculator 42 with the preset data, thereby controlling the hydraulic pressure supply state of the hydraulic valve 50 according to the left and right inclination. For example, when the inclination of the left side of the vehicle is lowered, the hydraulic pressure is supplied to the hydraulic cylinder 60 installed in the left suspension of the vehicle by the control of the hydraulic valve 50 so that the length of the piston 65 on the left side of the vehicle is extended. Make sure the vehicle is level.

On the contrary, when the right inclination of the vehicle is lowered, the hydraulic pressure is supplied to the hydraulic cylinder 60 installed in the right suspension of the vehicle by the control of the hydraulic valve 50 so that the length of the piston 65 on the right side of the vehicle is extended. To keep the vehicle horizontal to the left and right.

When the vehicle is leveled by the operation of the hydraulic cylinder 60, the control unit 44 to stop the operation of the hydraulic valve 50.

In addition, when the vehicle runs in a normal straight line, as shown in FIG. 4A, the front and rear sensors 14b of the second member 14 are kept horizontal so that the first member 12 and the second member 14 may be moved. When the front and rear sensor 14b maintains 90 ° and the vehicle changes its front and rear inclination due to a sudden stop, etc., the front and rear sensor 14b of the second member 14 rotates in accordance with the inclination of the vehicle, and the distance between the front and rear sensors 14b and the first member 12 is maintained. The angle θ is changed.

That is, when the front of the vehicle is lowered, the inclination of the front and rear sensors 14b of the first member 12 and the second member 14 is changed as shown in FIG. 4B. When the rear of the vehicle is lowered, the inclination of the front and rear sensors 14b of the first member 12 and the second member 14 is changed as shown in FIG. 4C.

As described above, the front and rear sensors 14b of the second member 14 rotate to reduce the distance between the first member 12, that is, the angle θ, and according to the magnitude of the angle θ, the induced electromotive force sensing means. As the magnetic flux passing through the coil 34 of 30 is varied, an induced electromotive force corresponding to the angle θ is generated. The calculating unit 42 calculates the front and rear inclination of the vehicle by using the voltage of the induced electromotive force input from the induced electromotive force detecting means 30.

The controller 44 compares the inclination input from the calculator 42 with the preset data, thereby controlling the hydraulic pressure supply state of the hydraulic valve 50 according to the left and right inclination. For example, when the front inclination of the vehicle is lowered, the hydraulic pressure is supplied to the hydraulic cylinder 60 installed in the front suspension of the vehicle by the control of the hydraulic valve 50 so that the length of the piston 65 is extended so that the vehicle is extended. Keep it level.

On the contrary, when the rear inclination of the vehicle is lowered, the hydraulic pressure is supplied to the hydraulic cylinder 60 installed in the rear suspension of the vehicle by the control of the hydraulic valve 50 so that the length of the piston 65 is extended so that the vehicle is horizontal. To keep.

When the vehicle is leveled by the operation of the hydraulic cylinder 60, the control unit 44 to stop the operation of the hydraulic valve 50.

According to the inclination detection sensor of the present invention, by using the induced electromotive force generated in the induction electromotive force detecting means can detect the front and rear inclination of the vehicle generated by the left and right inclination of the vehicle and the sudden stop of the vehicle.

In addition, by adjusting the height of the suspension according to the front and rear and right and left tilt of the vehicle detected by the inclination sensor, the vehicle driver can drive while feeling stable in a comfortable state.

Claims (7)

It is composed of a fixed first member, a second member moving according to the left and right and front and rear inclination, and sensing means installed on the first member or the second member to sense the distance between the first member and the second member A tilt sensor installed in the vehicle; A control unit which receives the detection information of the inclination detection sensor and outputs a tilt control signal of the vehicle; In the attitude control device of a vehicle comprising a hydraulic cylinder for adjusting the height of the suspension in accordance with the signal of the control unit, The inclination detection sensor, The second member is rotatably coupled to the first member and rotates so that the distance between the first member and the second member becomes closer or further away according to the front, rear, left and right tilts of the vehicle, The sensing means is formed of a magnet installed on any one of the first member and the second member, and induction electromotive force sensing means consisting of a coil installed on the other toward the magnet, wound around the cylindrical member, And the inductive electromotive force detecting means is configured to input the induced electromotive force generated as the distance from the magnet to the control unit. delete delete The method of claim 1, The magnet is composed of an iron core and a coil wound around the posture control device of a vehicle, characterized in that the coil is an electromagnet to which power is applied through an alternator. The method of claim 4, wherein the control unit A calculation unit calculating a slope using the voltage of the induced electromotive force input from the induced electromotive force sensing means; And And a control unit configured to output a valve control signal by comparing the inclination input from the operation unit with preset data. A control unit which receives the detection information of the inclination detection sensor and outputs a tilt control signal of the vehicle; In the attitude control device of a vehicle comprising a hydraulic cylinder for adjusting the height of the suspension in accordance with the signal of the control unit, A fixed first member, A second member rotatably coupled to the first member, the second member being rotated according to the front, rear, left, and right tilts of the vehicle so that the distance from the first member is closer or farther away; A magnet installed on one of the first member and the second member; And At least one of the first member and the second member is installed toward the magnet and the attitude control device of the vehicle comprising a tilt detection sensor comprising an induction electromotive force sensing means consisting of a coil wound around the cylindrical member. The method of claim 6, The magnet is composed of an iron core and a coil wound around the posture control device of a vehicle, characterized in that the coil is an electromagnet to which power is applied through an alternator.

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