KR100693149B1 - Semi-acticve suspension of a vehicle - Google Patents

Semi-acticve suspension of a vehicle Download PDF

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Publication number
KR100693149B1
KR100693149B1 KR1020000051297A KR20000051297A KR100693149B1 KR 100693149 B1 KR100693149 B1 KR 100693149B1 KR 1020000051297 A KR1020000051297 A KR 1020000051297A KR 20000051297 A KR20000051297 A KR 20000051297A KR 100693149 B1 KR100693149 B1 KR 100693149B1
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South Korea
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vehicle
semi
sensor
road surface
active suspension
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KR1020000051297A
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Korean (ko)
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KR20020017783A (en
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고유석
심정수
김영철
김학균
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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
    • B60G17/015—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
    • B60G17/0152—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 action on a particular type of suspension unit
    • B60G17/0157—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 action on a particular type of suspension unit non-fluid unit, e.g. electric motor
    • 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
    • B60G17/016—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 their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—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 their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • 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
    • 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
    • B60G17/01908—Acceleration or inclination sensors
    • 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
    • B60G2400/10—Acceleration; Deceleration
    • 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
    • B60G2400/20—Speed
    • B60G2400/204—Vehicle speed
    • 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
    • B60G2400/40—Steering conditions
    • B60G2400/41—Steering angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/96—ASC - Assisted or power Steering control
    • B60G2800/964—Auto-navigation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/303—Speed sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors

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

Abstract

본 발명은 차량의 반능동 현가장치에 관한 것으로서, 반능동 현가장치의 작동을 위해 일반적인 센서의 입력값 외에 네비게이션 시스템(70)에서 노면정보와 도로 상황에 대한 정보를 입력받아 추가적인 센서의 장착이나 부대비용없이 차량을 모션제어할 수 있어 프리뷰 제어가 가능하다는 이점이 있다.
The present invention relates to a vehicle's semi-active suspension device, in addition to the input value of the general sensor for the operation of the semi-active suspension device receives the road surface information and road situation information from the navigation system 70, the installation of additional sensors or incidental The advantage of preview control is that the vehicle can be motion-controlled at no cost.

반능동 현가장치 네비게이션 프리뷰 노면 정보 Semi-active suspension navigation preview road surface information

Description

차량의 반능동 현가장치{SEMI-ACTICVE SUSPENSION OF A VEHICLE} Semi-active suspension of vehicle {SEMI-ACTICVE SUSPENSION OF A VEHICLE}             

도1은 일반적인 차량의 반능동 현가장치를 나타낸 블록구성도이다. 1 is a block diagram showing a semi-active suspension of a typical vehicle.

도2는 일반적인 차량의 반능동 현가장치의 작동을 설명하기 위해 쇽업소버의 단면을 나타낸 작동도이다. Figure 2 is an operation diagram showing a cross-section of the shock absorber to explain the operation of a semi-active suspension of a typical vehicle.

도 3은 본 발명에 의한 차량의 반능동 현가장치를 나타낸 블록구성도이다.
3 is a block diagram showing a semi-active suspension of a vehicle according to the present invention.

- 도면의 주요부분에 대한 부호의 설명 -   -Explanation of symbols for the main parts of the drawings-

10 : 가속도센서 20 : 조향각센서10: acceleration sensor 20: steering angle sensor

30 : 차속센서 40 : 제어부30: vehicle speed sensor 40: control unit

50 : 스텝모터 60 : 쇽업소버50: step motor 60: shock absorber

70 : 네비게이션 시스템
70: navigation system

본 발명은 차량의 반능동 현가장치에 관한 것으로서, 보다 상세하게는 반능 동 현가장치의 작동을 위해 네비게이션 시스템에서 노면정보와 도로 상황에 대한 정보를 입력받아 추가적인 센서의 장착이나 부대비용없이 차량을 모션제어할 수 있도록 한 반능동 현가장치에 관한 것이다. The present invention relates to a semi-active suspension of a vehicle, and more particularly, to receive a road surface information and road information from a navigation system for the operation of the semi-active suspension, and to operate a vehicle without additional sensors or additional costs. It relates to a semi-active suspension that can be controlled.

차량의 현가장치는 차축과 차체를 연결하며 주행할 때 차축이 노면에서 받는 진동이나 충격을 차체에 직접 전달되지 않도록 하여 차체나 하물의 손상을 방지하고 승차감을 좋게 하는 장치이다. 노면에서 받는 충격을 완화하는 섀시스프링과, 섀시 스프링의 자유진동을 억제하여 승차감을 좋게 하는 쇽 업소버 및 자동차가 옆으로 흔들리는 것을 방지하는 스테이빌라이져 등으로 구성되어 있다. Suspension of the vehicle is a device that connects the axle and the vehicle body and prevents the axle from being transmitted directly to the vehicle body when the axle travels on the road surface, thereby preventing damage to the vehicle body or cargo and improving ride comfort. It consists of a chassis spring that mitigates the impact on the road, a shock absorber that restrains free vibration of the chassis spring to improve ride quality, and a stabilizer that prevents the vehicle from shaking sideways.

그리고 현가장치는 구동 바퀴에 발생하는 구동력이나 제동할 때에 각 바퀴의 제동력을 차체에 전달함과 동시에 선회할 때의 원심력에도 견디고 각 바퀴를 차체에 대해 바른 위치로 지지하는 역할도 해야 한다. In addition, the suspension system must transmit the driving force generated in the driving wheels or the braking force of each wheel to the vehicle body when braking, and at the same time, withstand the centrifugal force during the turning and support each wheel in the correct position with respect to the vehicle body.

그런데 위와 같은 현가장치의 특성은 보통 주행시는 승차감을 향상시키기 위해 부드러워야 하고, 고속주행시에는 주행안정성을 확보하기 위해 딱딱해야한다. 또한 주행중 노면의 상태에 따라 발생되는 모든 충격을 흡수하여 차체의 진동을 최소화할 수 있어야 한다. 그러나 현재 사용되고 있는 기계식 현가장치는 스프링상수, 쇽업소버의 감쇠력 등이 일정값으로 고정되어 있어 상반된 요구를 동시에 만족시킬 수 없다는 문제점이 있다. By the way, the characteristics of the suspension device as above should be smooth in order to improve the riding comfort in normal driving, and should be hard in order to secure driving stability in high speed driving. In addition, it must be able to minimize the vibration of the vehicle body by absorbing all the shock generated by the road surface condition while driving. However, the mechanical suspension currently used has a problem that the spring constant, the damping force of the shock absorber, etc. are fixed to a constant value, so that the opposite requirements cannot be satisfied at the same time.

그래서 위와 같은 문제점을 해결하기 위해 스프링과 댐퍼 대신에 공기압이나 유압으로 작동하는 액튜에이터를 사용하고, 각종 센서로부터 자동차와 노면의 상태를 감지하고, 컴퓨터에 의하여 스프링상수, 쇽업소버의 감쇠력 그리고 공기나 유공 압 스프링의 회로압력 등을 가변시켜 차고를 제어하거나 차체의 자세를 제어하여 주행안정성과 승차감을 동시에 향상시키는 것을 목적으로 통상의 스프링과 댐퍼를 갖추고 스프링 레이트나 댐퍼의 감쇠력을 가변시켜 제어하는 반능동 현가장치와, 공기나 가스를 스프링으로 사용하는 저주파 능동 현가장치 등 여러 가지 타입이 있고, 유압 실린더와 서보만으로 작용하는 능동 현가장치가 있다. So, in order to solve the above problems, use actuators operated by pneumatic or hydraulic pressure instead of springs and dampers, and detect the condition of automobile and road surface from various sensors, and by using computer, spring constant, damper damping force and air or air gap. Semi-active to control the garage by varying the circuit pressure of the pressure spring, etc., or to control the attitude of the car body to improve driving stability and ride comfort at the same time, and to control the spring rate or damper by varying the damping force of the damper. There are various types of suspensions, such as low frequency active suspensions using air or gas as springs, and active suspensions that operate only by hydraulic cylinders and servos.

도1은 전자제어 현가장치중 종래의 반능동 현가장치의 블록구성도를 도시하였다. 1 is a block diagram of a conventional semi-active suspension of the electronically controlled suspension.

여기에 도시된 바와 같이 차체의 상하진동 가속도를 측정하기 위한 가속도센서(10)와, 조향휠의 회전각을 측정하여 차체의 롤링을 판정하기 위한 조향각센서(20)와, 차량의 속도를 측정하기 위한 차속센서(30)와, 가속도센서(10)와 조향각센서(20)와 차속센서(30)의 값을 입력받아 차량의 현가특성을 결정하는 제어부(40)와, 제어부(40)의 판정에 따라 쇽업소버(60)내의 회전밸브(62)를 조절하는 스텝모터(50)로 이루어진다 As shown here, the acceleration sensor 10 for measuring the vertical vibration acceleration of the vehicle body, the steering angle sensor 20 for determining the rolling of the vehicle body by measuring the rotation angle of the steering wheel, and measuring the speed of the vehicle The controller 40 and the controller 40 for determining the suspension characteristic of the vehicle by receiving values of the vehicle speed sensor 30, the acceleration sensor 10, the steering angle sensor 20, and the vehicle speed sensor 30. According to the shock absorber 60, the step motor 50 is configured to adjust the rotary valve 62.

도2는 도 1의 쇽업소버(60)를 나타낸 단면도로써 피스톤로드(68)를 중공으로 형성하여 그 내부에 컨트롤로드(61)를 설치하고 컨트롤로드(61)와 일체로 회전밸브(62)를 설치한다. 그리고 컨트롤로드(61)에는 좌우로 일정각도 회전시키는 스텝모터(50)가 연결된다. FIG. 2 is a cross-sectional view of the shock absorber 60 of FIG. 1, in which the piston rod 68 is formed in a hollow state, a control rod 61 is installed therein, and the rotary valve 62 is integrally formed with the control rod 61. Install. And the control motor 61 is connected to the step motor 50 for rotating a predetermined angle to the left and right.

상기와 같이 이루어진 반능동 현가장치의 작동을 설명하면 다음과 같다. 각종 센서에 의해 차량의 상하진동이나 좌우롤링 등을 측정하여 바운싱을 감쇠시키거나 롤링을 줄이기 위해 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시켜 쇽업 소버(60)의 감쇠력을 조절함으로써 스프링의 자유진동을 제어하게 된다. Referring to the operation of the semi-active suspension made as described above are as follows. By measuring the vibration of the vehicle up and down or left and right by various sensors to attenuate bounce or reduce rolling by operating the step motor 50 to rotate the control rod 61 to adjust the damping force of the shock absorber 60 It controls the free vibration of the spring.

도2의 (가)에 도시된 바와 같이 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시키면 회전밸브(62)를 통해 상/하압력실(66)(67)이 서로 연결된다. 따라서 회전밸브(62)가 오리피스(63)를 막지 않기 때문에 동작유체는 오리피스(63)와 피스톤밸브(64)를 통해 흐르게 되어 쇽업소버(60)의 감쇠력은 상대적으로 감소하여 부드럽게 된다. As shown in (a) of FIG. 2, when the control rod 61 is rotated by operating the step motor 50, the upper / lower pressure chambers 66 and 67 are connected to each other through the rotary valve 62. Therefore, since the rotary valve 62 does not block the orifice 63, the working fluid flows through the orifice 63 and the piston valve 64, so that the damping force of the shock absorber 60 is relatively reduced and smoothed.

또한, 도2의 (나)에 도시된 바와 같이 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시키면 회전밸브(62)가 상/하압력실(66)(67)을 서로 차단한다. 따라서 회전밸브(62)가 오리피스(63)를 폐쇄하므로 상/하압력실(66)(67) 간의 유체유동은 단지 피스톤밸브(64)에 의해서 이루어지기 때문에 쇽업소버(60)의 감쇠력은 상대적으로 증가하여 딱딱하게 된다. In addition, as shown in (b) of FIG. 2, when the control rod 61 is rotated by operating the step motor 50, the rotary valve 62 blocks the upper / lower pressure chambers 66 and 67 from each other. . Therefore, since the rotary valve 62 closes the orifice 63, the fluid flow between the upper / lower pressure chambers 66 and 67 is made only by the piston valve 64, so that the damping force of the shock absorber 60 is relatively low. It increases and hardens.

위와 같이 오리피스(63)를 회전밸브(62)에 의해 폐쇄하거나 개방시킴으로써 쇽업소버(60)의 감쇠력을 조절함으로써 노면의 특성이나 주행특성에 따라 현가특성을 조절할 수 있게 된다. By closing or opening the orifice 63 by the rotary valve 62 as described above, by adjusting the damping force of the shock absorber 60, the suspension characteristic can be adjusted according to the characteristics of the road surface or the driving characteristic.

그런데, 위와 같이 가속도센서, 조향각센서, 차속센서 등의 값과 그밖에 브레이크, TPS 등의 조작신호를 받아들이는데 이와 같은 센서의 값으로는 노면의 전반적인 특성을 규명하는 데는 한계가 있으며 이와 같은 센서의 신호는 차량에 모션이 발생한 후에 제어 출력이 발생하게 되어 미리 도로의 상황등을 예측할 수 없다는 문제점이 있다.
However, as mentioned above, it accepts values such as acceleration sensor, steering angle sensor, vehicle speed sensor, and other operation signals such as brake and TPS, but the value of such sensor is limited in identifying the overall characteristics of the road surface. The control output is generated after the motion occurs in the vehicle, there is a problem that can not predict the situation of the road in advance.

본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 반능동 현가장치의 입력으로 네비게이션 시스템의 노면 정보와 도로 상황에 대한 정보를 받아들여 차량의 모션을 제어할 수 있도록 한 반능동 현가장치를 제공함에 있다.
The present invention was created to solve the above problems, and an object of the present invention is to receive the road surface information and the road information of the navigation system as an input of a semi-active suspension device to control the motion of the vehicle. It is to provide a semi-active suspension.

상기와 같은 목적을 실현하기 위한 본 발명은 차량의 진동이나 롤링 상태를 측정하여 쇽업소버의 감쇠력을 제어하는 반능동 현가장치에 있어서, 노면 정보와 도로 상황에 대한 정보를 네비게이션 시스템으로부터 입력받는 것을 특징으로 한다. The present invention for realizing the above object is a semi-active suspension device for controlling the damping force of the shock absorber by measuring the vibration or rolling state of the vehicle, characterized in that the road surface information and road information is received from the navigation system It is done.

위와 같이 이루어진 본 발명은 네비게이션 시스템에 제공되는 각종 정보중에서 노면 정보와 도로 상황에 대한 정보를 반능동 현가장치에서 입력받아 차체에 모션이 발생한 후 측정되는 센서의 값에 보충하여 미리 입력된 노면 정보와 도로 상황을 기반으로 프리뷰 제어를 가능하게 할 수 있게 된다.
According to the present invention made as described above, the road surface information and the road situation information are input from the semi-active suspension device among the various information provided to the navigation system and supplemented with the value of the sensor measured after the motion occurs in the vehicle body, Preview control can be enabled based on road conditions.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이며 종래 구성과 동일한 부분은 동일한 부호 및 명칭을 사용한다. Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.

도 3은 본 발명에 의한 차량의 반능동 현가장치를 개략적으로 도시한 블록구 성도이다. 3 is a block diagram schematically showing a semi-active suspension of a vehicle according to the present invention.

여기에 도시된 바와 같이 차체의 상하진동 가속도를 측정하기 위한 가속도센서(10)와, 조향휠의 회전각을 측정하여 차체의 롤링을 판정하기 위한 조향각센서(20)와, 차량의 속도를 측정하기 위한 차속센서(30)와, 기후, 노면 정보 및 도로 상황에 대한 정보를 입력받기 위한 네비게이션 시스템(70)과, 가속도센서(10)와 조향각센서(20)와 차속센서(30)와 네비게이션 시스템(70)의 출력값을 입력받아 차량의 현가특성을 결정하는 제어부(40)와, 제어부(40)의 판정에 따라 쇽업소버(60)내의 회전밸브(62)를 조절하는 스텝모터(50)로 이루어진다 As shown here, the acceleration sensor 10 for measuring the vertical vibration acceleration of the vehicle body, the steering angle sensor 20 for determining the rolling of the vehicle body by measuring the rotation angle of the steering wheel, and measuring the speed of the vehicle Vehicle speed sensor 30, the navigation system 70 for receiving information on the weather, road surface information and road conditions, acceleration sensor 10, steering angle sensor 20, vehicle speed sensor 30 and navigation system ( A control unit 40 for receiving the output value of 70 and determining the suspension characteristic of the vehicle, and a step motor 50 for adjusting the rotary valve 62 in the shock absorber 60 according to the determination of the control unit 40.

위와 같이 이루어진 본 실시예의 작동을 설명하면 다음과 같다. Referring to the operation of the present embodiment made as described above are as follows.

노면의 상태를 측정하기 위한 초음파 센서나 비젼센서 없이 네비게이션 시스템(70)에서 보유한 기후 및 각종 상황에 따른 노면의 상태, 그리고 도로 상황에 대한 정보를 입력받을 뿐만 아니라 가속도센서(10), 차속센서(30), 조향각센서(20)의 값을 입력받아 제어부(40)에서 현재 차량의 주행 상태 및 차량의 상하진동이나 좌우롤링 등을 판단하여 바운싱을 감쇠시키거나 롤링을 줄이기 위해 엑추에이터인 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시켜 쇽업소버(60)의 감쇠력을 조절함으로써 스프링의 자유진동을 제어하게 된다. Without the ultrasonic sensor or vision sensor to measure the state of the road surface, the state of the road surface according to the climate and various situations, and road conditions that are retained in the navigation system 70, as well as the input of the acceleration sensor 10, vehicle speed sensor ( 30), the step motor 50 as an actuator to attenuate bounce or reduce rolling by determining the current driving state of the vehicle and the vertical vibration or right and left rolling of the vehicle by receiving the value of the steering angle sensor 20; By controlling the damping force of the shock absorber (60) by rotating the control rod (61) by controlling the free vibration of the spring.

감쇠력의 조절은 종래기술에서 언급한 도2의 (가)에 도시된 바와 같이 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시키면 회전밸브(62)를 통해 상/하압력실(66)(67)이 서로 연결된다. 따라서 회전밸브(62)가 오리피스(63)를 막지 않기 때문에 동작유체는 오리피스(63)와 피스톤밸브(64)를 통해 흐르게 되어 쇽업소버(60) 의 감쇠력은 상대적으로 감소하여 부드럽게 된다. The damping force is adjusted by operating the step motor 50 and rotating the control rod 61 as shown in FIG. 2A mentioned in the related art. 67 are connected to each other. Therefore, since the rotary valve 62 does not block the orifice 63, the working fluid flows through the orifice 63 and the piston valve 64, so that the damping force of the shock absorber 60 is relatively reduced and smoothed.

또한, 도 2의 (나)에 도시된 바와 같이 스텝모터(50)를 작동시켜 컨트롤로드(61)를 회전시키면 회전밸브(62)가 상/하압력실(66)(67)을 서로 차단한다. 따라서 회전밸브(62)가 오리피스(63)를 폐쇄하므로 상/하압력실(66)(67) 간의 유체유동은 단지 피스톤밸브(64)에 의해서 이루어지기 때문에 쇽업소버(60)의 감쇠력은 상대적으로 증가하여 딱딱하게 된다. In addition, as shown in (b) of FIG. 2, when the control rod 61 is rotated by operating the step motor 50, the rotary valve 62 blocks the upper / lower pressure chambers 66 and 67 from each other. . Therefore, since the rotary valve 62 closes the orifice 63, the fluid flow between the upper / lower pressure chambers 66 and 67 is made only by the piston valve 64, so that the damping force of the shock absorber 60 is relatively low. It increases and hardens.

위와 같이 네비게이션 시스템(70)에 제공되는 기후, 온도, 습도, 노면 상태 등 도로의 상황에 대한 정보를 EPS, VDC(차량안정성 제어시스템), DDC(Diret Digital Controller), ICMS 등의 각종 차량 제어에 응용할 수도 있다.
As described above, information on road conditions such as climate, temperature, humidity, and road conditions provided to the navigation system 70 may be used to control various vehicles such as EPS, VDC (Vehicle Stability Control System), DDC (Diret Digital Controller), and ICMS. It can also be applied.

상기한 바와 같이 본 발명은 반능동 현가장치의 입력으로 네비게이션 시스템에 제공되는 노면 정보 및 도로 상황에 대한 정보를 입력받아 별도의 센서의 장착이나 부대 비용없이 차량의 모션을 제어할 수 있어 프리뷰 제어를 가능하게 하여 최적의 승차감과 운전 안정성을 확보할 수 있는 이점이 있다.
As described above, the present invention receives the road surface information and the road situation information provided to the navigation system by the input of the semi-active suspension device, so that the motion of the vehicle can be controlled without the installation of additional sensors or additional costs, thereby controlling the preview. By doing so, there is an advantage of ensuring an optimum ride comfort and driving stability.

Claims (1)

차체의 상하진동 가속도를 측정하기 위한 가속도 센서;An acceleration sensor for measuring vertical vibration acceleration of the vehicle body; 조향휠의 회전각을 측정하여 차체의 롤링을 판정하기 위한 조향각 센서;A steering angle sensor for determining a rolling of the vehicle body by measuring a rotation angle of the steering wheel; 차량의 속도를 측정하기 위한 차속 센서;A vehicle speed sensor for measuring a speed of the vehicle; 기후, 노면 정보 및 도로 상황에 대한 정보를 입력받기 위한 네비게이션 시스템;A navigation system for receiving information on climate, road surface information, and road conditions; 상기 가속도 센서, 상기 조향각 센서, 상기 차속 센서 및 상기 네비게이션 시스템의 출력값을 입력받아 차량의 현가 특성을 결정하는 제어부 및A controller configured to receive output values of the acceleration sensor, the steering angle sensor, the vehicle speed sensor, and the navigation system to determine a suspension characteristic of the vehicle; 상기 제어부의 판정에 따라 쇽업소버 내의 컨트롤 로드 및 회전 벨브를 조정하는 스텝모터를 포함하는 쇽업소버의 감쇠력을 제어하는 차량의 반능동 현가장치. And a step motor for adjusting the control rod and the rotary valve in the shock absorber according to the determination of the controller.
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