KR20070059561A - Suspension system having linear car-height sensor and method thereof - Google Patents

Suspension system having linear car-height sensor and method thereof Download PDF

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KR20070059561A
KR20070059561A KR1020050118549A KR20050118549A KR20070059561A KR 20070059561 A KR20070059561 A KR 20070059561A KR 1020050118549 A KR1020050118549 A KR 1020050118549A KR 20050118549 A KR20050118549 A KR 20050118549A KR 20070059561 A KR20070059561 A KR 20070059561A
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South Korea
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height
vehicle
linear
sensor
garage
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KR1020050118549A
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Korean (ko)
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KR100784377B1 (en
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김완일
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주식회사 만도
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B60G17/0525—Height adjusting or levelling valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A suspension system having a linear car-height sensor and a control method thereof are provided to more precisely control a car-height through more accurate detection of the car-height. A suspension system having a linear car-height sensor includes an air spring(306), a damper(304), a linear car-height sensor(308), and an electronic control unit(310). The air spring is disposed between a vehicle body(300) and an axle(302) to support the vehicle body. The air spring is controlled by the electronic control unit to supply or discharge a compressed air to adjust a car-height. The damper reduces vibration transmitted from a road surface. The linear car-height sensor is mounted on a piston rod(312) of the damper to detect variation of the car-height depending on a linear movement of the piston rod. The electronic control unit receives running information of a vehicle to control the car-height.

Description

선형 차고 센서를 구비한 차량의 현가장치 및 차고 제어 방법{SUSPENSION SYSTEM HAVING LINEAR CAR-HEIGHT SENSOR AND METHOD THEREOF}Suspension system and garage control method of vehicle equipped with linear garage sensor {SUSPENSION SYSTEM HAVING LINEAR CAR-HEIGHT SENSOR AND METHOD THEREOF}

도 1은 종래 차량의 외장 로타리형 차고센서 예시도,1 is an exemplary view of an exterior rotary type garage sensor of a conventional vehicle;

도 2는 종래 차량의 외장 로타리형 차고센서에서 회전각 변화에 따른 차고 검출 동작 예시도,2 is a view illustrating a garage detection operation according to a rotation angle change in an exterior rotary type garage sensor of a conventional vehicle;

도 3은 본 발명의 실시 예에 따른 선형 차고 센서를 구비한 차량의 현가장치 구성도.3 is a configuration diagram of a suspension device for a vehicle having a linear garage sensor according to an embodiment of the present invention.

<도면의 주요 부호에 대한 간략한 설명><Brief description of the major symbols in the drawings>

300 : 차체 302 : 차축300: body 302: axle

304 : 댐퍼 306 : 공기스프링304: damper 306: air spring

308 : 선형차고센서 310 : ECU308: linear height sensor 310: ECU

312 : 피스톤 로드312: Piston Rod

본 발명은 차량의 전자현가장치에 관한 것으로, 특히 댐퍼 피스톤 내부에 선형 차고 센서를 장착하여 차고의 정확한 검출을 통한 보다 정밀한 차고 제어가 가 능하도록 하는 차량의 현가장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic suspension device for a vehicle, and more particularly, to a suspension system and a method of mounting a linear garage sensor inside a damper piston to enable more precise garage control through accurate detection of a garage.

차량의 현가장치는 차축과 차체를 연결하여 주행할 때 차축이 노면에서 받는 진동이나 충격이 차체에 직접 전달되지 않도록 하여 차체나 하물의 손상을 방지하고 승차감을 좋게 하는 장치이다.Suspension of a vehicle is a device that prevents damage to the vehicle body or loads and improves the riding comfort by preventing the axle from being directly transmitted to the vehicle body when vibrations or shocks received from the road surface when driving by connecting the axle and the vehicle body.

도 1은 종래 차량의 현가장치 구성을 도시한 것으로, 종래에는 현가 제어를 위한 차고를 계산하기 위해 차체와 차축의 상대 거리를 측정함에 있어서, 상기 도 1에서 도시된 바와 같이 차체와 차축간 연결되는 외장 로타리형의 상대 거리 측정용 차고센서를 통해 차체와 차축간 거리를 측정하고 있다.1 illustrates a configuration of a suspension device of a conventional vehicle, and in the related art, in measuring a relative distance between a vehicle body and an axle to calculate a height for suspension control, the vehicle body is connected between the vehicle body and the axle as shown in FIG. Relative distance measuring height sensor of external rotary type measures the distance between body and axle.

도 2는 종래 위와 같이 차체와 차축간 연결되는 외장 로타리형 차고센서에서 차체와 차축간 각도에 따른 차고를 계산하는 개념도를 도시한 것으로, 종래 로타리형 차고센서(200)는 상기 도 2의 (a)에 도시된 바와 같이 차량의 차고 변화에 따라 차체와 차축간 연결된 로타리형 센서(200)의 각도가 변화하게 되는 경우 위 각도 변화에 따른 센서의 전압값을 검출하여 도 2의 (b)에서와 같은 전압과 각도간 관계에 따라 센서 출력 전압으로부터 로타리형 센서의 각도 변화 값을 검출한 후, 이를 다시 차체와 차축 간 상대거리를 아래의 [수학식 1]에서와 같이 산출하여 변환하게 된다.Figure 2 shows a conceptual diagram of calculating the garage according to the angle between the vehicle body and the axle in the external rotary type garage sensor connected between the vehicle body and the axle as described above, the conventional rotary type garage sensor 200 is shown in FIG. As shown in FIG. 2, when the angle of the rotary sensor 200 connected between the vehicle body and the axle is changed according to the vehicle height change, the voltage value of the sensor according to the above angle change is detected and as shown in FIG. After detecting the angle change value of the rotary type sensor from the sensor output voltage according to the relationship between the same voltage and angle, the relative distance between the vehicle body and the axle is calculated and converted as shown in Equation 1 below.

Figure 112005071394283-PAT00001
Figure 112005071394283-PAT00001

그러나 위와 같은 종래 외장 로타리형 차고센서를 통한 차체와 차축간 상대거리 계산에 있어서는 센서가 외부로 노출되어 장착 공간을 많이 차지하고, 침수, 먼지, 거친 길 주행 시 충격 등과 같은 환경적인 요인에 매우 열악하여 고장의 원인이 되며, 이와 같은 문제점을 보완하기 위해 내환경성을 좋게 하는 경우 가격이 상승되는 문제점이 있었다.However, in calculating the relative distance between the vehicle body and the axle through the conventional external rotary type garage sensor as described above, the sensor is exposed to the outside and occupies a lot of mounting space, and it is very poor for environmental factors such as flooding, dust, and impact during rough road driving. It is a cause of failure, and if the environmental resistance is good to compensate for this problem, there was a problem that the price is increased.

또한 현가제어를 위해 필요한 것은 차체와 차축의 상대거리인데, 종래 로타리형의 차고센서로는 차고에 따른 차체와 차축간 각도를 검출하도록 되어 있어 이를 다시 차체와 차축간 상대거리로 계산하는데 따른 오차가 발생하게 되는 문제점이 있으며, 위와 같은 로타리형 차고센서는 일반적으로 에어 스프링 보다 차체 중심쪽에 가까운 곳에 위치하여 상대거리 변환 시 정밀도가 떨어져 차체와 차축간 상대거리를 정확하게 측정하기 어려운 문제점이 있었다.In addition, the suspension distance is required for the relative distance between the vehicle body and the axle, and the conventional rotary sensor detects the angle between the vehicle body and the axle according to the garage. There is a problem that occurs, the rotary type garage sensor as described above is generally located closer to the center of the body than the air spring has a problem that it is difficult to accurately measure the relative distance between the vehicle body and the axle because the accuracy is reduced when the relative distance is converted.

따라서, 본 발명의 목적은 댐퍼 피스톤 내부에 선형 차고 센서를 장착하여 차고의 정확한 검출을 통한 보다 정밀한 차고 제어가 가능하도록 하는 차량의 현가장치 및 방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a suspension system and a method of mounting a linear garage sensor inside the damper piston to enable more precise garage control through accurate detection of the garage.

상술한 목적을 달성하기 위한 본 발명은 차고 제어를 위한 차량의 현가장치로서, 차체와 차축간 연결되어 노면에서 전달되는 진동을 절연하고 차량의 자세 변화에 대응한 접지력을 확보시키는 댐퍼와, 상기 댐퍼와 평행하게 차체와 차축간에 연결되어, 압축 공기의 공급 및 배출을 통해 차고의 조절을 수행하는 공기스프링과, 상기 댐퍼의 피스톤 로드에 장착되어 피스톤 로드의 선형 움직임에 따른 차고 변화를 검출하는 선형 차고 센서와, 상기 선형 차고 센서로부터 검출되는 차량의 차고 변화를 인식하여 차고가 기준 높이 이상으로 유지되도록 상기 댐퍼에 연결된 공기스프링을 제어하여 차고를 제어하는 ECU를 포함하는 것을 특징으로 한다.The present invention for achieving the above object is a suspension device for vehicle control, the damper is connected between the vehicle body and the axle to insulate the vibration transmitted from the road surface and to secure the grounding force corresponding to the change in attitude of the vehicle, and the damper An air spring connected between the vehicle body and the axle in parallel to the vehicle body to adjust the garage through the supply and discharge of compressed air, and a linear garage mounted on the piston rod of the damper to detect a change in the garage according to the linear movement of the piston rod. And a ECU for controlling a garage by recognizing a garage change of the vehicle detected by the linear garage sensor and controlling an air spring connected to the damper so that the garage is maintained above a reference height.

또한 본 발명은 차량의 현가장치에서 선형 차고 센서를 이용한 차량의 차고 제어 방법으로서, (a)차량의 주행 시 선형 차고 센서를 통해 차체와 차축간 차고 변화를 측정하는 단계와, (b)상기 차체와 차축간 차고 측정값이 미리 설정된 기준 높이 이하로 낮아지는지 여부를 검사하는 단계와, (c)상기 차량의 차고가 기준 높이 이하로 낮아지는 경우 공기스프링을 통해 차고를 조절시키는 단계를 포함하는 것을 특징으로 한다.In another aspect, the present invention provides a vehicle height control method using a linear height sensor in a vehicle suspension device, the method comprising the steps of: (a) measuring the height change between the vehicle body and the axle through the linear height sensor when the vehicle is running, and (b) the vehicle body And checking whether the height measurement value between the axles and the vehicle axle falls below a preset reference height, and (c) adjusting the height through an air spring when the height of the vehicle falls below a reference height. It features.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예의 동작을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

도 3은 본 발명의 실시 예에 따른 외장 로타리형의 차고 센서를 이용하지 않고 댐퍼 피스톤 내부에 선형 차고 센서를 장착하여 차고 제어를 수행하는 차량의 현가장치 구성을 도시한 것이다.FIG. 3 illustrates a configuration of a suspension device of a vehicle in which a garage control is performed by mounting a linear garage sensor inside a damper piston without using an external rotary type garage sensor according to an exemplary embodiment of the present invention.

이하 상기 도 3을 참조하여 본 발명의 차량 현가장치에서 선형 차고 센서를 이용한 차고 제어 동작을 상세히 설명하기로 한다.Hereinafter, the garage control operation using the linear garage sensor in the vehicle suspension of the present invention will be described in detail.

먼저 공기스프링(306)은 차체(300)와 차축(302) 사이에 위치하여 차체를 지지하는 기능을 하며, ECU(310)의 제어에 따라 압축공기의 공급 및 배출을 통해 차고의 조절 기능을 수행한다. 또한 적재 하중에 비례하여 스프링 상수가 증가하는 공기스프링의 특성을 이용하여 공차와 만차 시에도 차체 고유진동수를 1 Hz부근의 낮은 값으로 유지하여 부드럽고 쾌적한 승차감을 제공한다. 상기 공기스프링(306)은 현가장치의 형태에 따라서 댐퍼(damper)와 일체형으로 사용되거나 분리형으로 사용될 수 있다.First, the air spring 306 is positioned between the vehicle body 300 and the axle 302 to support the vehicle body, and performs the adjustment of the garage through the supply and discharge of compressed air under the control of the ECU 310. do. In addition, by utilizing the characteristics of the air spring whose spring constant increases in proportion to the loading load, the body's natural frequency is maintained at a low value near 1 Hz even during tolerance and full load, providing a smooth and comfortable ride. The air spring 306 may be used integrally with a damper or may be used separately according to the type of suspension.

댐퍼(304)는 노면에서 전달되는 진동을 절연하여 쾌적한 승차감을 확보하는 기능과 차량 자세 변화에 대응하여 적절한 접지력을 확보하여 주행 안정성을 확보하는 기능을 수행한다. 코일스프링보다 부드러운 공기스프링 현가장치의 경우 댐퍼를 이용하여 감쇠력을 적절히 제어해줌으로써 주행 안정성을 확보한다.The damper 304 insulates vibration transmitted from the road surface to secure a comfortable riding comfort and to secure proper driving force in response to a change in vehicle attitude to secure driving stability. In the case of the air spring suspension system, which is softer than the coil spring, the damping force is used to properly control the damping force to secure driving stability.

선형 차고센서(308)는 도 3의 (b)에서 보여지는 바와 같이 상기 댐퍼(304)의 피스톤 로드(piston rod)(312)에 장착되어 피스톤 로드의 선형 움직임에 따른 차고 변화(h)를 검출하여 ECU(310)로 인가시킨다.The linear height sensor 308 is mounted on the piston rod 312 of the damper 304 to detect the height change h due to the linear movement of the piston rod as shown in (b) of FIG. To the ECU 310.

ECU(Electronic Control Unit)(310)는 차량의 주행 정보 및 운전자의 의도를 차속, 조향각, G 센서, 차고 센서, TPS, 브레이크 센서 등으로부터 입력받아 각 제어 로직에 적합한 신호 처리를 수행하여 승차감 향상, 조정안정성 향상이 이루어지도록 하며, 또한 본 발명의 실시 예에 따라 상기 선형 차고 센서(308)로부터 검출되는 차량의 차고 변화를 인식하여 차고가 기준 높이 이상으로 유지되도록 상기 댐퍼(304)에 연결된 공기스프링(306)을 제어하여 차고를 제어하는 기능을 수행한다.The ECU (Electronic Control Unit) 310 receives the driving information of the vehicle and the driver's intention from the vehicle speed, steering angle, G sensor, garage sensor, TPS, brake sensor, etc. and performs signal processing suitable for each control logic to improve ride comfort, The air spring connected to the damper 304 to improve the adjustment stability, and also to recognize the change in the height of the vehicle detected from the linear height sensor 308 in accordance with an embodiment of the present invention so that the height is maintained above the reference height Control 306 to control the garage.

즉, 본원 발명에서는 상술한 바와 같이 차체(300)와 차축(302)간 연결되어 노면으로부터 전달되는 진동을 흡수하는 댐퍼(304)내 피스톤 로드(312)에 차고 측정을 위한 선형 차고 센서(308)가 장착되는데, ECU(310)는 상기 댐퍼(304)내 피스 톤 로드(312)에 장착된 선형 차고 센서(308)를 통해 차체(300)와 차축(302)간 차고 변화(h)를 지속적으로 측정한다.That is, in the present invention, as described above, the linear height sensor 308 for the height measurement on the piston rod 312 in the damper 304 is connected between the vehicle body 300 and the axle 302 and absorbs the vibration transmitted from the road surface. ECU 310 continuously maintains the height change (h) between the vehicle body 300 and the axle 302 through a linear height sensor 308 mounted to the piston rod 312 in the damper 304. Measure

위와 같이 선형 차고 센서(308)를 통해 측정된 차고 변화값을 입력받는 ECU(310)는 상기 차체와 차축간 차고 변화값이 미리 설정된 기준 높이 이하로 낮아지는 경우 노면과 차체 하부가 너무 근접해지지 않도록 공기스프링(306)을 제어하여 차고를 적정한 높이로 조절시키게 된다.As described above, the ECU 310 that receives the height change value measured through the linear height sensor 308 may prevent the road surface and the lower part of the body from being too close when the height change value between the vehicle body and the axle is lowered below a preset reference height. The air spring 306 is controlled to adjust the garage to an appropriate height.

이때 상기 선형 차고 센서(308)는 차고에 대한 직접적인 측정이 가능한 차축과 차체 연결부위에 선형으로 장착되어 차고 변화를 그대로 검출해냄으로써, 차고 변화값을 보다 정밀하게 측정할 수 있도록 하여 측정된 차고 변화값에 따른 정밀한 차고 조절이 수행될 수 있도록 하는 것이다.At this time, the linear height sensor 308 is mounted on the axle and the body connection portion that can be directly measured for the height of the vehicle to detect the change in the garage as it is, so that the garage change value can be measured more precisely measured garage change The precise height adjustment according to the value can be performed.

상기한 바와 같이 본 발명에서는 차고 제어를 위한 차량의 현가장치에 있어서, 차체와 차축간 연결된 댐퍼의 피스톤 로드에 차고 선형 변화값을 직접적으로 검출할 수 있는 선형 차고 센서를 장착하여 종래 차체와 차축간 회전각 변화값을 변환하여 차고를 측정하는 외장 로타리형 차고 센서 이용시보다 차체와 차축간 차고 변화를 보다 정밀하게 측정할 수 있도록 함으로써, 측정된 차고 변화값에 따른 정밀한 차고 제어가 이루어질 수 있도록 한다.As described above, in the present invention, in the suspension device of the vehicle for controlling the height, the conventional vehicle body and the axle are mounted by mounting a linear height sensor that can directly detect the height change of the garage on the piston rod of the damper connected between the body and the axle. By converting the rotation angle change value, the height change of the height between the vehicle body and the axle can be measured more precisely than when using an external rotary type garage sensor that measures the height, thereby enabling precise garage control according to the measured height change value.

한편 상술한 본 발명의 설명에서는 구체적인 실시 예에 관해 설명하였으나, 여러 가지 변형이 본 발명의 범위에서 벗어나지 않고 실시될 수 있다. 따라서 발명의 범위는 설명된 실시 예에 의하여 정할 것이 아니고 특허청구범위에 의해 정하여져야 한다.Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

이상에서 설명한 바와 같이, 본 발명에서는 차고 제어를 위한 차량의 현가장치에 있어서, 차체와 차축간 연결된 댐퍼의 피스톤 로드에 차고 선형 변화값을 직접적으로 검출할 수 있는 선형 차고 센서를 장착하여 종래 차체와 차축간 회전각 변화값을 변환하여 차고를 측정하는 외장 로타리형 차고 센서 이용시보다 차체와 차축간 차고 변화를 선형적으로 보다 정밀하게 측정할 수 있도록 함으로써, 측정된 차고 변화값에 따른 정밀한 차고 제어가 이루어질 수 있도록 하는 이점이 있다.As described above, in the present invention, in the suspension device of the vehicle for controlling the height, a conventional vehicle body is mounted on a piston rod of a damper connected between the vehicle body and the axle, and a linear garage sensor capable of directly detecting a vehicle linear change value. By changing the rotation angle change value between the axles, it is possible to measure the change of the height between the vehicle body and the axle linearly more precisely than when using the external rotary type garage sensor that measures the height. There is an advantage to this.

Claims (3)

차고 제어를 위한 차량의 현가장치로서,As a vehicle suspension for garage control, 차체와 차축간 연결되어 노면에서 전달되는 진동을 절연하고 차량의 자세 변화에 대응한 접지력을 확보시키는 댐퍼와,A damper connected between the vehicle body and the axle to insulate the vibration transmitted from the road surface and to secure a traction force corresponding to the change in attitude of the vehicle, 상기 댐퍼와 평행하게 차체와 차축간에 연결되어, 압축 공기의 공급 및 배출을 통해 차고의 조절을 수행하는 공기스프링과,An air spring connected between the vehicle body and the axle in parallel with the damper to adjust the height of the garage through supply and discharge of compressed air; 상기 댐퍼의 피스톤 로드에 장착되어 피스톤 로드의 선형 움직임에 따른 차고 변화를 검출하는 선형 차고 센서와,A linear height sensor mounted on the piston rod of the damper and detecting a change in height according to the linear movement of the piston rod; 상기 선형 차고 센서로부터 검출되는 차량의 차고 변화를 인식하여 차고가 기준 높이 이상으로 유지되도록 상기 댐퍼에 연결된 공기스프링을 제어하여 차고를 제어하는 ECUECU controlling the height by recognizing the change in the height of the vehicle detected by the linear height sensor and controlling the air spring connected to the damper so that the height is maintained above the reference height 를 포함하는 차고 제어를 위한 차량의 현가장치.Suspension of the vehicle for a garage control comprising a. 차량의 현가장치에서 선형 차고 센서를 이용한 차량의 차고 제어 방법으로서,A vehicle height control method using a linear height sensor in a vehicle suspension system, (a)차량의 주행 시 선형 차고 센서를 통해 차체와 차축간 차고 변화를 측정하는 단계와,(a) measuring a change in the height between the vehicle body and the axle by means of a linear height sensor while the vehicle is traveling; (b)상기 차체와 차축간 차고 측정값이 미리 설정된 기준 높이 이하로 낮아지는지 여부를 검사하는 단계와,(b) checking whether the height measurement value between the vehicle body and the axle falls below a preset reference height; (c)상기 차량의 차고가 기준 높이 이하로 낮아지는 경우 공기스프링을 통해 차고를 조절시키는 단계(c) adjusting the height of the vehicle through an air spring when the height of the vehicle drops below a reference height; 를 포함하는 선형 차고 센서를 이용한 차량의 차고 제어 방법.Garage control method of a vehicle using a linear garage sensor comprising a. 제2항에 있어서,The method of claim 2, 상기 선형 차고 센서는, 댐퍼내 피스톤 로드에 장착되어 차량의 선형 차고 변화값을 검출하는 것을 특징으로 하는 선형 차고 센서를 이용한 차량의 차고 제어 방법.The linear height sensor is mounted on the piston rod in the damper to detect a linear height change value of the vehicle, characterized in that the vehicle height control method using a linear height sensor.
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