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KR100250698B1 - Vehicle suspension control device - Google Patents

Vehicle suspension control device Download PDF

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Publication number
KR100250698B1
KR100250698B1 KR1019970025726A KR19970025726A KR100250698B1 KR 100250698 B1 KR100250698 B1 KR 100250698B1 KR 1019970025726 A KR1019970025726 A KR 1019970025726A KR 19970025726 A KR19970025726 A KR 19970025726A KR 100250698 B1 KR100250698 B1 KR 100250698B1
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South Korea
Prior art keywords
damping force
shock absorber
power
power hop
hop
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KR1019970025726A
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Korean (ko)
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KR980001027A (en
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다카히사 다타라자코
게니치 에가와
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하나와 요시카즈
닛산 지도우샤 가부시키가이샤
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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
    • 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
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B60G2400/206—Body oscillation speed; Body vibration frequency
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/07—Inhibiting means

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

Abstract

차량의 서스펜션 제어장치에 있어서 파워홉의 발생을 방지한다.In the vehicle suspension control device, generation of power hops is prevented.

쇼크업소버(10)가 부여하는 감쇠력을 조정하는 감쇠력 조정기구(20)를 구비하고, 차체측에 생기는 스프링상 상하 가속도 Gz를 검출하는 가속도센서(60)를 구비함과 동시에, 검출되는 가속도 Gz에 따라서 차체의 진동주파수 fo가 소정의 저주파수 영역으로 되는 파워홉 발생시를 판정하여서 쇼크업소버(10)의 감쇠력을 높이는 구성으로 한다.A damping force adjusting mechanism 20 for adjusting the damping force applied by the shock absorber 10 is provided, and an acceleration sensor 60 for detecting spring-like vertical acceleration Gz generated on the vehicle body side is provided, and at the same time, the acceleration Gz detected is provided. Therefore, it is set as the structure which raises the damping force of the shock absorber 10 by determining the generation | occurrence | production of the power hop in which the vibration frequency fo of a vehicle body becomes a predetermined low frequency area | region.

Description

차량의 서스펜션 제어장치Suspension Control Unit of Vehicle

본 발명은 차량의 서스펜션 제어장치의 개량에 관한 것이다.The present invention relates to an improvement of a suspension control device for a vehicle.

종래부터 차량의 운전상태에 따라서 감쇠력을 조정가능한 쇼크업소버를 구비하고, 차량의 조종안정성이나 승차감을 향상시킨 서스펜션이 알려져 있다(예를들면, 일본국 특허공개 평 7-186662호 공보 등, 참조)BACKGROUND ART Conventionally, suspensions are known which have a shock absorber that can adjust the damping force according to the driving state of a vehicle, and improve the steering stability and ride comfort of the vehicle (see, for example, Japanese Patent Laid-Open No. 7-186662, etc.).

그러나, 이와 같은 종래의 차량의 서스펜션 제어장치에 있어서는 저차속 영역에서는 조종 안정성 보다 승차감을 우선해서 확보하기 위해 쇼크업소버의 감쇠력을 낮게 하는 제어가 행해지고 있었기 때문에 급발진시 등에 구동륜과 노면 사이에 스틱 슬립 현상이 발생하기 쉽다. 이 스틱 슬립 현상에 의한 구동력의 변동이 기진력으로 되어 스프링하의 진동이 발생하고, 말하자면 파워홉 현상이 발생할 가능성이 있다.However, in the conventional suspension control apparatus of the vehicle, in the low vehicle speed region, the control of lowering the damping force of the shock absorber is performed in order to secure the ride comfort over the steering stability, so that the stick slip phenomenon occurs between the driving wheel and the road surface during sudden start and the like. Easy to occur The fluctuation of the driving force due to this stick slip phenomenon becomes an oscillating force, and vibration under spring occurs, that is, a power hop phenomenon may occur.

또한, 파워홉(powerhop) 현상은 급발진시에 한정되지 아니하고, 트랙션 콘트롤 시스템(traction control system)을 구비하는 차량에 있어서, 노면 상황등에 맞추어서 구동륜이 공전하지 않도록 엔진의 출력제어 또는 구동륜의 브레이크 제어가 행해지는 운전조건에서도 발생할 가능성이 있다.In addition, the power-hop phenomenon is not limited at the time of rapid start, and in a vehicle provided with a traction control system, the output control of the engine or the brake control of the driving wheel is prevented so that the driving wheel does not idle in accordance with road conditions. There is a possibility of occurrence even in the operating conditions performed.

본 발명은 상기한 문제점을 감안해서 이루어진 것이고 차량의 서스펜션 제어장치에 있어서, 파워홉의 발생을 방지하는 것을 목적으로 한다.The present invention has been made in view of the above problems, and an object of the present invention is to prevent generation of power hops in a suspension control apparatus for a vehicle.

청구항 제1항에 기재된 차량의 서스펜션 제어장치는 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지 수단은 쇼크업소버의 스트로크량 S을 검지하는 스트로크 센서를 구비하며, 검출되는 스트로크량 S에 의거해서 스프링하의 진동 주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된다.The suspension control apparatus for a vehicle according to claim 1 includes a shock absorber connected between a vehicle body and a drive wheel, a damping force adjusting mechanism for adjusting a damping force of the shock absorber, and generation of a power hop which is a spring-load vibration caused by a change in driving force. And a power hop suppression means for increasing the damping force of the shock absorber through the damping force adjusting mechanism when the occurrence of the power hop is detected. The power hop detecting means has a stroke amount S of the shock absorber. And a stroke sensor to be detected, and configured to determine, at the time of power hop generation, an operating condition in which the oscillation frequency fo under the spring becomes a predetermined low frequency region based on the detected stroke amount S.

청구항 제2항에 기재된 차량의 서스펜션 제어장치는 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지수단은 차속 V이 소정값 Vo 이하의 차속영역에서 스프링하의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된다.The suspension control apparatus for a vehicle according to claim 2 includes a shock absorber connected between the vehicle body and the drive wheel, a damping force adjusting mechanism for adjusting the damping force of the shock absorber, and generation of a power hop which is a spring-load vibration caused by a change in the driving force. And a power hop suppression means for increasing the damping force of the shock absorber through a damping force adjusting mechanism when the occurrence of the power hop is detected, wherein the power hop detecting means has a vehicle speed V equal to or less than a predetermined value Vo. It is configured to determine at the time of power hop generation an operating condition in which the oscillation frequency fo under the spring becomes a predetermined low frequency region in the vehicle speed region of.

청구항 제3항에 기재된 차량의 서스펜션 제어장치는 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지수단은 차속 V이 소정값 Vo보다 높은 차속 영역에서 차체의 전후방향의 가속도 Gy가 소정값 Gyo 이상의 진동발생시로 스프링하의 진동 주파수 fo가 소정의 저주파수 영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된다.The suspension control apparatus for a vehicle according to claim 3 includes a shock absorber connected between the vehicle body and the drive wheel, a damping force adjusting mechanism for adjusting the damping force of the shock absorber, and generation of a power hop which is a spring-load vibration caused by a change in the driving force. A power hop detecting means for detecting the power hop and a power hop suppressing means for increasing the damping force of the shock absorber through the damping force adjusting mechanism when the occurrence of the power hop is detected, wherein the power hop detecting means has a vehicle speed V of a predetermined value Vo. In the high vehicle speed region, it is configured to determine an operation condition in which the acceleration Gy in the front-rear direction of the vehicle body is a predetermined value Gyo or more when the vibration frequency fo under the spring becomes a predetermined low frequency region at the time of power hop generation.

작용Action

청구항 제1항에 기재된 차량의 서스펜션 제어장치에 있어서, 검출되는 스트로크량 S에 의거해서 스프링하의 진동 주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정해서, 쇼크업소버의 감쇠력을 높이는 제어를 행하기 때문에 급발진시 등에서 파워홉에 의해 차체에 발생하는 진동을 억제하고 승차감을 개선할 수가 있다.In the suspension control apparatus for a vehicle according to claim 1, on the basis of the detected stroke amount S, a driving condition at which the vibration frequency fo under the spring becomes a predetermined low frequency region is determined at the time of power hop generation, and the damping force of the shock absorber is increased. Since the control is performed, vibration generated in the vehicle body by the power hop at the time of sudden start and the like can be suppressed and the riding comfort can be improved.

청구항 제2항에 기재된 차량의 서스펜션 제어장치에 있어서, 자속 V이 소정값 Vo이하의 차속영역에 있어서, 차체의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하는 구성에 의해, 정돈되지 않은 도로를 주행시 등에 있어서 진동 발생시를 파워홉시로 잘못 판정해서 쇼크업소버의 감쇠력을 높이는 일이 없이 승차감을 유지할 수가 있다.The suspension control apparatus for a vehicle according to claim 2, wherein in the vehicle speed region in which the magnetic flux V is equal to or less than a predetermined value Vo, the driving condition at which the vibration frequency fo of the vehicle body becomes a predetermined low frequency region is determined at the time of power hop generation. In this way, it is possible to maintain the riding comfort without incorrectly determining the occurrence of vibration as a power hop during driving or the like on an uneven road and increasing the damping force of the shock absorber.

청구항 제3항에 기재된 차량의 서스펜션 제어장치에 있어서, 차속 V이 소정값 Vo보다 높은 차속영역에 있어서 차체의 전후방향의 가속도 Gy가 소정값 Gyo이상의 진동발생시로 스프링하의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하는 구성에 의해, 차속이 Vo 이상이라도 급가속 등에 의해 발생한 파워홉을 확실하게 검출할 수 있다.The suspension control apparatus for a vehicle according to claim 3, wherein in the vehicle speed region where the vehicle speed V is higher than the predetermined value Vo, the vibration frequency fo under the spring is a predetermined low frequency when the acceleration Gy in the front and rear direction of the vehicle body generates a vibration higher than or equal to the predetermined value Gyo. By the configuration for determining the operation condition to be the area at the time of the power hop generation, it is possible to reliably detect the power hop generated by the rapid acceleration or the like even when the vehicle speed is Vo or higher.

도1은 본 발명의 실시형태를 도시하는 시스템도.1 is a system diagram showing an embodiment of the present invention.

도2는 동일하게 제어내용을 도시하는 플로우챠트.Fig. 2 is a flowchart showing control content in the same way.

도3은 다른 실시형태를 도시하는 시스템도.3 is a system diagram showing another embodiment.

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

10 : 쇼크업소버 20 : 감쇠력 조정기구10: shock absorber 20: damping force adjustment mechanism

30 : 구동륜 40 : 상하방향 가속도센서30: driving wheel 40: vertical acceleration sensor

45 : 전후방향 가속도센서 50 : 콘트롤 유닛45: front and rear acceleration sensor 50: control unit

60 : 차속 센서 70 : 스트로크 센서60: vehicle speed sensor 70: stroke sensor

다음에 본 발명의 실시형태를 첨부도면에 의거해서 설명을 한다.EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described based on an accompanying drawing.

도1에 있어서 도면부호 30은 차량에 설치된 구동륜이고 도시하지 아니한 엔진에서 회전력이 전달된다.In FIG. 1, reference numeral 30 denotes a drive wheel installed in a vehicle, and rotational force is transmitted from an engine (not shown).

도면부호 10은 도시하지 아니한 차체와 구동륜(30) 사이에 연결되는 쇼크업소버이고, 구동륜(30)에서 입력되는 진동을 감쇄한다.Reference numeral 10 is a shock absorber connected between the vehicle body and the driving wheel 30 (not shown), and attenuates the vibration input from the driving wheel 30.

도면부호 20은 쇼크업소버(10)에 구비된 감쇠력 조정기구이고 쇼크업소버(10)의 감쇠력을 조정한다.Reference numeral 20 denotes a damping force adjusting mechanism provided in the shock absorber 10 and adjusts the damping force of the shock absorber 10.

도면부호 40은 차체에 설치된 상하방향 가속도 센서이고, 차체에 생기는 상하가속도 Gz에 의거한 신호를 출력한다. 도면부호 45는 차체에 설치되는 전후방향 가속도센서이고 차체에 생기는 전후방향의 가속도 Gy에 의한 신호를 출력한다.Reference numeral 40 denotes an up-down acceleration sensor provided in the vehicle body, and outputs a signal based on the up-down acceleration Gz generated in the vehicle body. Reference numeral 45 denotes a front and rear acceleration sensor installed in the vehicle body, and outputs a signal by the acceleration Gy in the front and rear direction generated on the vehicle body.

도면부호 60은 차속센서이고 차속 V에 의한 신호를 출력한다.Reference numeral 60 denotes a vehicle speed sensor and outputs a signal by the vehicle speed V.

도면부호 50은 콘트롤 유닛이고 상하방향 가속도센서(40)와 전후 방향 가속도센서(45) 및 차속센서(60)등의 검출 신호를 입력하고 운전조건에 따라서 쇼크업소버(10)의 감쇠력을 제어한다.Reference numeral 50 denotes a control unit and inputs detection signals such as the up-down acceleration sensor 40, the front-rear acceleration sensor 45, the vehicle speed sensor 60, and the like and controls the damping force of the shock absorber 10 according to the driving conditions.

콘트롤 유닛(50)은 차속 V이 소정값 Vo(예를들면, 30km/h)이하의 차속영역이든지 혹은 차속 V이 소정값 Vo보다 높은 차속영역이라도 차체의 전후방향 가속도 Gy가 소정값 Gyo 이상의 전동 발생시인 운전조건이 성립하는가 어떤가를 판정한다. 이 운전 조건이 성립한 경우에, 상하 방향 가속도 Gz에 의거해서 차체의 진동주파수 fo가 소정의 저주파수영역(예를들면, 10Hz≤fo＜18Hz)으로 되는 운전상태를 파워홉 발생시로 판정한다. 파워홉 발생시로 판정된 경우에 감쇠력을 높이는 제어를 한다.The control unit 50 transmits the front and rear acceleration Gy of the vehicle body by the predetermined value Gyo even if the vehicle speed V is a vehicle speed range of less than or equal to the predetermined value Vo (for example, 30 km / h) or the vehicle speed region is higher than the predetermined value Vo. It is determined whether the operating condition at the time of occurrence is satisfied. When this driving condition is satisfied, the driving state at which the vibration frequency fo of the vehicle body becomes a predetermined low frequency region (for example, 10 Hz? In the case where it is determined that the power hop is generated, the control to increase the damping force is performed.

도2의 플로우챠트는 파워홉 발생시에 감쇠력을 제어하는 루틴을 도시하고 콘트롤 유닛(50)에 있어서 일정주기마다 실행된다.The flowchart in Fig. 2 shows a routine for controlling the damping force at the time of power hop generation and is executed in the control unit 50 at regular intervals.

이에 대해서 설명하면 먼저 스텝1에 있어서 차속 V이 소정값 Vo이하의 차속 영역인가 어떤가를 판정한다.In this regard, first, in step 1, it is determined whether or not the vehicle speed V is in the vehicle speed region below the predetermined value Vo.

차속 V이 소정값 Vo보다 높은 차속영역으로 판정이 된 경우 스텝2로 진행해서 차체의 전후방향 가속도 Gy가 소정값 Gyo 이상인가 어떤가를 판정한다.When it is determined that the vehicle speed V is higher than the predetermined value Vo, the flow advances to step 2 to determine whether the front and rear acceleration Gy of the vehicle body is equal to or larger than the predetermined value Gyo.

차속 V이 소정값 Vo 이하의 차속영역인가 혹은 차속 V이 소정값 Vo 보다 높은 차속영역이라도 차체의 전후방향 가속도 Gy가 소정값 Gyo 이상의 진동 발생시인 경우에, 스텝3으로 진행하여 상하방향 가속도 Gz에 의거해서 차체의 진동주파수 fo가 소정의 저주파수영역으로 되는 파워홉 발생시인가 어떤가를 판정한다.Even when the vehicle speed V is less than or equal to the predetermined value Vo or the vehicle speed is higher than or equal to the predetermined value Vo, when the front and rear acceleration Gy of the vehicle body generates a vibration higher than or equal to the predetermined value Gyo, the process proceeds to Step 3 to the up and down acceleration Gz. On the basis of this, it is determined whether or not the vibration frequency fo of the vehicle body is at the time of the power hop generation to become a predetermined low frequency region.

이렇게 해서 파워 홉 발생시로 판정된 경우에, 스텝4로 진행해서 쇼크업소버(10)의 감쇠력을 높이는 제어를 한다.In this way, when it is determined that the power hop has occurred, control proceeds to step 4 to increase the damping force of the shock absorber 10.

이상과 같이 구성되고 다음에 작용에 대해서 설명을 한다.It is comprised as mentioned above, and a following action is demonstrated.

본 발명은 급발진 혹은 급가속에 따른 구동력 변동에 기인하는 파워홉에 대처해서 차체의 진동 주파수 fo가 소정의 저주파수영역으로 되는 파워홉 발생시를 판정해서 쇼크업소버(10)의 감쇠력을 높이는 제어를 하기 때문에 차체에 생기는 진동을 억제하여 승차감을 개선할 수가 있다.Since the present invention deals with power hops caused by fluctuations in driving force due to rapid oscillation or rapid acceleration, it is judged when a power hop occurs in which the vibration frequency fo of the vehicle body becomes a predetermined low frequency region and controls to increase the damping force of the shock absorber 10. The riding comfort can be improved by suppressing the vibration generated in the vehicle body.

차속 V이 소정값 Vo 이하의 차속영역 인가 혹은 차속 V이 소정값 Vo보다 높은 차속영역이라도 차체의 전후방향 가속도 Gy가 소정값 Gyo이상의 진동발생시인 경우에, 상하방향 가속도 Gz에 의거해서 차체의 진동 주파수 fo가 소정의 저주파수 영역으로 되는 파워홉 발생시인가 어떤가를 판정하는 구성에 의해 정비되지 않은 도로주행시등에 있어서 진동 발생시를 파워홉시로 잘못 판정하여 쇼크업소버(10)의 감쇠력을 높이는 일이 없이 승차감을 유지할 수가 있다.Vibration of the vehicle body based on the up-down acceleration Gz when the front and rear acceleration Gy of the vehicle body generates vibration above the predetermined value Gyo even when the vehicle speed V is applied below the predetermined value Vo or when the vehicle speed V is higher than the predetermined value Vo. Ride comfort without increasing the damping force of the shock absorber 10 by incorrectly determining the occurrence of vibration as the power hop during road driving and the like that is not maintained by the configuration for determining whether the frequency fo is at the time of generating the power hop to be a predetermined low frequency region. Can be maintained.

다음에 도 3에 도시하는 실시형태에 대해서 설명한다. 또한 도1과의 대응 부분에는 동일부호를 붙인다.Next, the embodiment shown in FIG. 3 will be described. In addition, the same code | symbol is attached | subjected to the corresponding part with FIG.

쇼크업소버(10)의 스트로크량 S을 검지하는 스트로크 센서(70)를 구비한다. 콘트롤 유닛(50)은 스트로크센서(70)로부터의 검출신호를 입력해서 차체에 생기는 상하가속도 Gz를 산출한다.The stroke sensor 70 which detects the stroke amount S of the shock absorber 10 is provided. The control unit 50 inputs the detection signal from the stroke sensor 70 to calculate the vertical acceleration Gz generated in the vehicle body.

이 경우도 콘트롤 유닛(50)은 차속 V이 소정값 Vo(예를들면, 30km/h)이하의 차속영역인가 혹은 차속 V이 소정값 Vo 보다 높은 차속영역 이라도 차체의 전후방향 가속도 Gy가 소정값 Gyo 이상의 진동발생시인 운전 조건이 성립하는가 어떤가를 판정한다. 이 운전조건이 성립한 경우에, 상하방향 가속도 Gz에 의거해서 차체의 진동 주파수 fo가 소정의 저주파수영역(예를들면, 10Hz≤fo＜18Hz)으로 되는 운전 상태를 파워홉 발생시로 판정한다. 파워홉 발생시로 판정된 경우에 감쇠력을 높이는 제어를 한다.Also in this case, the control unit 50 may determine whether the vehicle body V has a predetermined value Vo (for example, 30 km / h) or less, or even if the vehicle speed V is higher than the predetermined value Vo, the front and rear acceleration Gy of the vehicle body is a predetermined value. It is determined whether the operating conditions at the time of vibration occurrence of Gyo abnormality are satisfied. In the case where this driving condition is satisfied, the driving state at which the vibration frequency fo of the vehicle body becomes a predetermined low frequency region (for example, 10 Hz? Fo <18 Hz) is determined at the time of power hop generation based on the up-down acceleration Gz. In the case where it is determined that the power hop is generated, the control to increase the damping force is performed.

또한, 상기한 구성은 트랙션 콘트롤 시스템을 구비하는 차량에 적용해도 좋다. 파워홉 현상은 급발진시에 한정되지 아니하고 트랙션 콘트롤 시스템을 구비하는 차량에 있어서, 노면 상황 등에 맞추어서 구동륜이 공전하지 않도록 엔진의 출력 제어 또는 구동륜의 브레이크 제어가 행해지는 운전 조건으로도 발생할 가능성이 있다. 트랙션 콘트롤 시스템의 작동에 따른 구동력 변동에 기인하는 파워홉에 대처해서 차체의 진동 주파수 fo가 소정의 저주파수영역으로 되는 파워홉 발생시를 판정해서 쇼크업소버(10)의 감쇠력을 높이는 제어를 하므로서 차체에 생기는 진동을 억제하여 승차감을 개선할 수가 있다.The above configuration may also be applied to a vehicle provided with a traction control system. The power hop phenomenon is not limited at the time of rapid start, but in a vehicle provided with a traction control system, there is a possibility that the output condition of the engine or the brake control of the driving wheel is performed so that the driving wheel does not idle in accordance with the road surface situation or the like. In response to power hops caused by fluctuations in driving force caused by the operation of the traction control system, the power hob generated by the shock absorber 10 is determined by determining when the power hob occurs when the vibration frequency fo of the car body becomes a predetermined low-frequency region, thereby controlling the damping force of the shock absorber 10. The riding comfort can be improved by suppressing vibration.

이상으로 설명한 바와 같이 청구항 제1항에 기재된 차량의 서스펜션 제어장치에 의하면, 검출되는 스트로크량 S에 의거해서 스프링하의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정해서, 쇼크업소버의 감쇠력을 높이는 제어를 하기 때문에 급발진시 등에 파워홉에 의해 차체에 생기는 진동을 억제하여 승차감을 개선할 수가 있다.As described above, according to the suspension control apparatus for a vehicle according to claim 1, on the basis of the detected stroke amount S, the driving condition at which the vibration frequency fo under the spring becomes a predetermined low-frequency region is determined at the time of power hop generation, and the shock is generated. Since the damping force of the absorber is controlled, vibrations generated in the vehicle body by the power hop during sudden start and the like can be suppressed to improve the riding comfort.

청구항 제2항에 기재된 차량의 서스펜션 제어장치에 의하면, 차속 V이 소정값 Vo 이하의 차속영역으로 되면 차체의 진동주파수 fo가 소정의 저주파수 영역으로 되는 운전조건을 파워홉 발생시로 판정하는 구성에 의해, 정비되지 않은 도로 주행시 등에 있어서 진동 발생 등을 파워홉시로 잘못 판정해서 쇼크업소버의 감쇠력을 높이는 일이 없이 승차감을 유지할 수가 있다.According to the suspension control apparatus for a vehicle according to claim 2, when the vehicle speed V becomes a vehicle speed range equal to or less than a predetermined value Vo, the driving condition at which the vibration frequency fo of the vehicle body becomes a predetermined low frequency range is determined by the power hop generation. In this case, the driving comfort can be maintained without erroneously determining the occurrence of vibration or the like at the time of power maintenance and increasing the damping force of the shock absorber.

청구항 제3항에 기재된 차량의 서스펜션 제어장치에 의하면, 차속 V이 소정값 Vo보다 높은 차속영역에 있어서 차체의 전후방향의 가속도 Gy가 소정값 Gyo이상의 진동 발생시로 스프링하의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하는 구성에 의해 차량의 서스펜션 제어장치에서 차속이 Vo 이상이라도 급가속 등에 의해 발생한 파워홉을 확실하게 검출할 수 있다.According to the suspension control apparatus for a vehicle according to claim 3, in the vehicle speed region in which the vehicle speed V is higher than the predetermined value Vo, the vibration frequency fo under the spring occurs at a predetermined low frequency when the acceleration Gy in the front and rear direction of the vehicle body is equal to or higher than the predetermined value Gyo. The configuration of determining the driving condition to be the area at the time of the power hop generation can reliably detect the power hop generated by the rapid acceleration or the like even when the vehicle speed is higher than Vo in the suspension control apparatus of the vehicle.

Claims (3)

(정정) 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지 수단은 쇼크업소버의 스트로크량 S을 검지하는 스트로크 센서를 구비하며, 검출되는 스트로크량 S에 의거해서 스프링하의 진동 주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된 차량의 서스펜션 제어장치.(Correction) A shock absorber connected between the vehicle body and the drive wheels, a damping force adjusting mechanism for adjusting the damping force of the shock absorber, a power hop detecting means for detecting the generation of a power hop which is a spring-load vibration caused by the change of the driving force; A power hop suppression means for increasing the damping force of the shock absorber via the damping force adjusting mechanism when the occurrence of the power hop is detected, the power hop detecting means having a stroke sensor for detecting the stroke amount S of the shock absorber; A suspension control apparatus for a vehicle configured to determine, as a power-hop occurrence, an operation condition in which the vibration frequency fo under a spring becomes a predetermined low frequency region based on the stroke amount S to be generated. (정정) 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지수단은 차속 V이 소정값 Vo 이하의 차속영역에서 스프링하의 진동주파수 fo가 소정의 저주파수영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된 차량의 서스펜션 제어장치.(Correction) A shock absorber connected between the vehicle body and the drive wheels, a damping force adjusting mechanism for adjusting the damping force of the shock absorber, a power hop detecting means for detecting the generation of a power hop which is a spring-load vibration caused by the change of the driving force; And a power hop suppressing means for increasing the damping force of the shock absorber via the damping force adjusting mechanism when the occurrence of the power hop is detected, wherein the power hop detecting means has a vibration frequency under the spring in the vehicle speed range of which the vehicle speed V is equal to or less than a predetermined value Vo. A suspension control apparatus for a vehicle configured to determine, as a power hop occurrence, a driving condition in which is a predetermined low frequency region. (정정) 차체와 구동륜 사이에 연결되는 쇼크업소버와, 쇼크업소버의 감쇠력을 조정가능하게 하는 감쇠력 조정기구와, 구동력의 변동에 따른 스프링하 진동인 파워홉의 발생을 검지하는 파워홉 검지수단과, 파워홉의 발생이 검지된 경우에 감쇠력 조정기구를 거쳐서 쇼크업소버의 감쇠력을 높이는 파워홉 억제수단을 구비하고, 상기 파워홉 검지수단은 차속 V이 소정값 Vo 보다 높은 차속 영역에서 차체의 전후방향의 가속도 Gy가 소정값 Gyo 이상의 진동발생시로 스프링하의 진동 주파수 fo가 소정의 저주파수 영역으로 되는 운전조건을 파워홉 발생시로 판정하도록 구성된 차량의 서스펜션 제어장치.(Correction) A shock absorber connected between the vehicle body and the drive wheels, a damping force adjusting mechanism for adjusting the damping force of the shock absorber, a power hop detecting means for detecting the generation of a power hop which is a spring-load vibration caused by the change of the driving force; And a power hop suppression means for increasing the damping force of the shock absorber through the damping force adjusting mechanism when the occurrence of the power hop is detected, wherein the power hop detecting means is provided in the front and rear direction of the vehicle body in the vehicle speed region in which the vehicle speed V is higher than the predetermined value Vo. A suspension control apparatus for a vehicle, configured to determine, as a power-hop generation, an operation condition in which an oscillation frequency fo under a spring becomes a predetermined low frequency region when an acceleration Gy is a vibration generated by a predetermined value or more.
KR1019970025726A 1996-06-21 1997-06-19 Vehicle suspension control device Expired - Fee Related KR100250698B1 (en)

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JP8161953A JPH106731A (en) 1996-06-21 1996-06-21 Suspension device for vehicle
JP96-161953 1996-06-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190005619A (en) * 2017-07-07 2019-01-16 현대자동차주식회사 Vehicle controlling apparatus and method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6401853B1 (en) * 2000-11-13 2002-06-11 General Motors Corporation Power-hop responsive engine torque control method
GB2479431B (en) * 2011-03-01 2012-08-08 Protean Electric Ltd A suspension control system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6460411A (en) * 1987-09-01 1989-03-07 Nippon Denso Co Shock absorber control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6460411A (en) * 1987-09-01 1989-03-07 Nippon Denso Co Shock absorber control device

Cited By (2)

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KR20190005619A (en) * 2017-07-07 2019-01-16 현대자동차주식회사 Vehicle controlling apparatus and method thereof
KR102322259B1 (en) 2017-07-07 2021-11-04 현대자동차 주식회사 Vehicle controlling apparatus and method thereof

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JPH106731A (en) 1998-01-13

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