KR100702325B1 - Anti squat control method for electronically controlled suspension - Google Patents

Anti squat control method for electronically controlled suspension Download PDF

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KR100702325B1
KR100702325B1 KR1020020028958A KR20020028958A KR100702325B1 KR 100702325 B1 KR100702325 B1 KR 100702325B1 KR 1020020028958 A KR1020020028958 A KR 1020020028958A KR 20020028958 A KR20020028958 A KR 20020028958A KR 100702325 B1 KR100702325 B1 KR 100702325B1
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vehicle speed
vehicle
rear wheel
damping force
control method
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KR1020020028958A
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Korean (ko)
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KR20030090473A (en
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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
    • 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
    • B60G2400/30—Propulsion unit conditions
    • B60G2400/33—Throttle position
    • 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
    • B60G2800/16—Running
    • B60G2800/164—Heaving; Squatting

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

Abstract

본 발명은 차속에 따라 전후륜 댐퍼(damper)의 감쇠력을 제어하는 방법에 관한 것이다. 종래의 차량 주행에 있어서, 운전자가 차량을 저속이나 고속으로 운전하는 경우에 차량에 스쿼트 현상이 발생하면 타이어의 접지력이 약해진다. 따라서, 차량의 자세가 불안정해지고 승차감도 떨어진다. 본 발명은, 트로틀 밸브의 개도량 정보 및 차속 정보에 따라 전후륜 댐퍼의 감쇠력을 제어해서 타이어의 접지력을 확보한다. 따라서, 차량의 가속이나 감속시 차량의 스쿼트 현상을 방지할 수 있다.The present invention relates to a method for controlling the damping force of the front and rear wheel dampers according to the vehicle speed. In the conventional vehicle driving, when the driver drives the vehicle at a low speed or a high speed, if a squat phenomenon occurs in the vehicle, the traction force of the tire is weakened. Therefore, the attitude of the vehicle becomes unstable and the ride comfort is also deteriorated. According to the present invention, the damping force of the front and rear wheel dampers is controlled in accordance with the opening amount information and the vehicle speed information of the throttle valve to secure the traction force of the tire. Therefore, the squat phenomenon of the vehicle during acceleration or deceleration of the vehicle can be prevented.

Description

전자제어 현가장치의 안티 스쿼트 제어방법{ANTI SQUAT CONTROL METHOD FOR ELECTRONICALLY CONTROLLED SUSPENSION}Anti-Squat Control Method of Electronic Control Suspension {ANTI SQUAT CONTROL METHOD FOR ELECTRONICALLY CONTROLLED SUSPENSION}

도 1은 본 발명에 따른 전자제어 현가장치의 일 실시예를 나타낸 블록도,1 is a block diagram showing an embodiment of an electronically controlled suspension according to the present invention;

도 2는 본 발명에 따른 전자제어 현가장치의 안티 스쿼트 제어방법의 일 실시예를 단계별로 나타낸 순서도.Figure 2 is a flow chart showing step by step an embodiment of an anti-squat control method of the electronically controlled suspension according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 트로틀 포지션 센서 12 : 차속 센서10: throttle position sensor 12: vehicle speed sensor

14 : 제어부 16 : 전륜 댐퍼14 controller 16 front wheel damper

18 : 후륜 댐퍼18: rear wheel damper

본 발명은 전자제어 현가장치(electronically controlled suspension)의 안티 스쿼트(anti-squat) 제어방법에 관한 것으로, 특히, 차속에 따라 전후륜 댐퍼(damper)의 감쇠력을 제어하는 방법에 관한 것이다.The present invention relates to an anti-squat control method of an electronically controlled suspension, and more particularly, to a method of controlling the damping force of a front and rear wheel damper according to the vehicle speed.

종래의 차량 주행에 있어서, 운전자가 차량을 저속이나 고속으로 운전하는 경우에 차량에 스쿼트 현상이 발생하면 타이어의 접지력이 약해진다. 따라서, 차량 의 자세가 불안정해지고 승차감도 떨어진다.In the conventional vehicle driving, when the driver drives the vehicle at a low speed or a high speed, if a squat phenomenon occurs in the vehicle, the traction force of the tire is weakened. Therefore, the attitude of the vehicle becomes unstable and the ride comfort is also reduced.

본 발명은 상술한 결점을 해결하기 위하여 안출한 것으로, 트로틀 밸브(throttle valve)의 개도량 정보 및 차속 정보에 따라 전후륜 댐퍼의 감쇠력을 제어해서 타이어의 접지력을 확보하여 차량의 스쿼트 현상을 방지하는 전자제어 현가장치의 안티 스쿼트 제어방법을 제공하는 데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, which controls the damping force of the front and rear wheel dampers according to the opening amount information and vehicle speed information of the throttle valve to secure the traction force of the tire to prevent squatting of the vehicle. An object of the present invention is to provide an anti-squat control method for an electronically controlled suspension.

상기 목적을 달성하기 위한 본 발명은, 차속 센서로부터 제공되는 신호를 감지하여 현재 차속이 설정 차속 미만인지 여부를 판단하는 단계; 상기 현재 차속이 설정 차속 미만일 경우 전륜 댐퍼의 리바운드 감쇠력 및 후륜 댐퍼의 컴프레션 감쇠력을 하드 모드로 설정하여 타이어의 접지력을 확보하는 단계; 상기 현재 차속이 설정 차속 미만이 아닐 경우 상기 현재 차속이 설정 차속 이상인지 여부를 판단하는 단계; 및 상기 현재 차속이 설정 차속 이상일 경우 트로틀 포지션 센서로부터 트로틀 밸브의 개도량 정보를 제공받아 상기 트로틀 밸브의 개도량에 따라 전후륜 댐퍼의 감쇠력을 각기 설정하여 타이어의 접지력을 확보하는 단계를 포함하는 것을 특징으로 한다.The present invention for achieving the above object is, by detecting a signal provided from the vehicle speed sensor to determine whether the current vehicle speed is less than the set vehicle speed; Setting a rebound damping force of the front wheel damper and a compression damping force of the rear wheel damper to a hard mode when the current vehicle speed is less than a predetermined vehicle speed to secure a traction force of a tire; Determining whether the current vehicle speed is greater than or equal to a preset vehicle speed when the current vehicle speed is not less than a preset vehicle speed; And receiving the opening amount information of the throttle valve from the throttle position sensor when the current vehicle speed is equal to or greater than a predetermined vehicle speed, thereby setting the damping force of the front and rear wheel dampers according to the opening amount of the throttle valve, respectively, to secure the traction force of the tire. It features.

이하, 첨부된 도면을 참조하여 본 발명에 따른 실시 예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 전자제어 현가장치의 일 실시예를 나타낸 블록도로, 제어부(14)가 트로틀 포지션 센서(10)로부터 제공되는 트로틀 밸브의 개도량 정보 및 차속 센서(12)로부터 제공되는 차속 정보를 이용하여 전륜 댐퍼(16)의 감쇠력 및 후륜 댐퍼(18)의 감쇠력을 제어하도록 해서 타이어의 접지력을 확보하여 차량의 스쿼트 현상을 방지하도록 구성된다. 1 is a block diagram showing an embodiment of an electronically controlled suspension device according to the present invention, in which the controller 14 provides the opening amount information of the throttle valve provided from the throttle position sensor 10 and the vehicle speed provided from the vehicle speed sensor 12. The damping force of the front wheel damper 16 and the damping force of the rear wheel damper 18 are controlled by using the information to secure the grounding force of the tire to prevent squatting of the vehicle.                     

이와 같이 구성된 본 발명을 도 2를 참조하여 보면 다음과 같다.The present invention configured as described above will be described with reference to FIG. 2.

도 2는 본 발명에 따른 전자제어 현가장치의 안티 스쿼트 제어방법의 일 실시예를 단계별로 나타낸 순서도이다.Figure 2 is a flow chart showing step by step an embodiment of an anti-squat control method of the electronically controlled suspension according to the present invention.

먼저, 제어부(14)는 차속 센서(12)로부터 제공되는 신호를 감지하여 현재 차속이 설정 차속 미만인지 여부를 판단한다(단계 10).First, the controller 14 detects a signal provided from the vehicle speed sensor 12 to determine whether the current vehicle speed is less than the set vehicle speed (step 10).

제어부(14)는 상기 현재 차속이 설정 차속 미만일 경우 전륜 댐퍼(16)의 리바운드 감쇠력 및 후륜 댐퍼(18)의 컴프레션 감쇠력을 하드 모드로 설정한다(단계 12). 즉, 설정 차속 미만의 저속에서는 댐퍼가 하드 모드로 설정되어도 차량의 승차감에 큰 영향을 미치지 않으므로 설정 차속 미만의 저속에서는 트로틀 밸브의 개도량에 상관없이 전륜은 리바운드 하드 모드로, 후륜은 컴프레션 하드 모드로 각기 설정해서 댐퍼의 느린 응답에 미리 대처한다. 상기 전후륜 댐퍼(16, 18)는 노말 타입(nomal type) 댐퍼와 리버스 타입(reverse type) 댐퍼로 구분할 수 있기 때문에, 각 타입별로 제어 방식이 다르다. 이때, 노말 타입 댐퍼는 리바운드 측과 컴프레션 측의 각 감쇠력이 같이 증감하고 리버스 타입 댐퍼는 리바운드 측과 컴프레션 측의 각 감쇠력이 다르게 증감한다.The controller 14 sets the rebound damping force of the front wheel damper 16 and the compression damping force of the rear wheel damper 18 to the hard mode when the current vehicle speed is less than the set vehicle speed (step 12). In other words, if the damper is set to the hard mode at a low speed below the set speed, the front wheel is in the rebound hard mode and the rear wheel is the compression hard mode at a low speed below the set speed regardless of the opening amount of the throttle valve. Set each one to counteract the slow response of the damper. Since the front and rear wheel dampers 16 and 18 can be classified into normal type dampers and reverse type dampers, the control schemes are different for each type. At this time, each damping force of the rebound side and the compression side increases and decreases in the normal type damper, and each damping force of the rebound side and the compression side increases and decreases differently.

반면, 제어부(14)는 상기 현재 차속이 설정 차속 미만이 아닐 경우 상기 현재 차속이 설정 차속 이상인지 여부를 판단한다(단계 14).On the other hand, if the current vehicle speed is not less than the set vehicle speed, the controller 14 determines whether the current vehicle speed is greater than or equal to the set vehicle speed (step 14).

제어부(14)는 상기 현재 차속이 설정 차속 이상일 경우 트로틀 포지션 센서(10)로부터 트로틀 밸브의 개도량 정보를 제공받아 트로틀 밸브의 개도량에 따라 전후륜 댐퍼(16, 18)의 감쇠력을 각기 설정하여 타이어의 접지력을 확보한다(단 계 16).When the current vehicle speed is greater than or equal to the set vehicle speed, the controller 14 receives the opening amount information of the throttle valve from the throttle position sensor 10 and sets the damping force of the front and rear wheel dampers 16 and 18 according to the opening amount of the throttle valve. Secure the traction of the tires (step 16).

이상에서 설명한 바와 같이, 본 발명은, 트로틀 밸브의 개도량 정보 및 차속 정보에 따라 전후륜 댐퍼의 감쇠력을 제어해서 타이어의 접지력을 확보한다. 따라서, 차량의 가속이나 감속시 차량의 스쿼트 현상을 방지할 수 있다.As described above, the present invention controls the damping force of the front and rear wheel dampers according to the opening amount information and the vehicle speed information of the throttle valve to secure the traction force of the tire. Therefore, the squat phenomenon of the vehicle during acceleration or deceleration of the vehicle can be prevented.

Claims (2)

트로틀 포지션 센서, 차속 센서, 및 전후륜 댐퍼를 구비한 전자제어 현가장치의 안티 스쿼트 제어방법으로,Anti-squat control method of electronically controlled suspension equipped with a throttle position sensor, a vehicle speed sensor, and a front and rear wheel damper, 상기 차속 센서로부터 제공되는 신호를 감지하여 현재 차속이 설정 차속 미만인지 여부를 판단하는 단계;Sensing whether a current vehicle speed is less than a predetermined vehicle speed by sensing a signal provided from the vehicle speed sensor; 상기 현재 차속이 설정 차속 미만일 경우 상기 전륜 댐퍼의 리바운드 감쇠력 및 상기 후륜 댐퍼의 컴프레션 감쇠력을 하드 모드로 설정하여 타이어의 접지력을 확보하는 단계;Setting a rebound damping force of the front wheel damper and a compression damping force of the rear wheel damper to a hard mode when the current vehicle speed is less than a predetermined vehicle speed to secure a traction force of a tire; 상기 현재 차속이 설정 차속 미만이 아닐 경우 상기 현재 차속이 설정 차속 이상인지 여부를 판단하는 단계; 및Determining whether the current vehicle speed is greater than or equal to a preset vehicle speed when the current vehicle speed is not less than a preset vehicle speed; And 상기 현재 차속이 설정 차속 이상일 경우 상기 트로틀 포지션 센서로부터 트로틀 밸브의 개도량 정보를 제공받아 상기 트로틀 밸브의 개도량에 따라 상기 전후륜 댐퍼의 감쇠력을 각기 설정하여 타이어의 접지력을 확보하는 단계를 포함하는 것을 특징으로 하는 전자제어 현가장치의 안티 스쿼트 제어방법.And when the current vehicle speed is greater than or equal to a predetermined vehicle speed, receiving the opening amount information of the throttle valve from the throttle position sensor to set the damping force of the front and rear wheel dampers according to the opening amount of the throttle valve, respectively, to secure the traction force of the tire. An anti squat control method for an electronically controlled suspension device, characterized in that. 삭제delete
KR1020020028958A 2002-05-24 2002-05-24 Anti squat control method for electronically controlled suspension KR100702325B1 (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691284A (en) * 1984-08-18 1987-09-01 Toyota Jidosha Kabushiki Kaisha Control system for three way variable shock absorber device for suspension with highest shock absorber effectiveness not selected in manual mode
US5159554A (en) * 1987-07-06 1992-10-27 Toyota Jidosha Kabushiki Kaisha Electronic controlled fluid suspension system
KR19980010408U (en) * 1996-08-06 1998-05-15 이정언 Electronically Controlled Tilting Suspension of Automobile
KR19980049096A (en) * 1996-12-19 1998-09-15 박병재 Automotive Anti Squat Control System
KR19980078675A (en) * 1997-04-29 1998-11-25 김영귀 Shock absorber device of vehicle and its control method
KR19980084126A (en) * 1997-05-21 1998-12-05 박문규 Semi-active suspension device for automobiles and control method thereof
KR20000027739A (en) * 1998-10-29 2000-05-15 밍 루 Electro control suspension apparatus
KR100285997B1 (en) * 1999-12-09 2001-01-09 Mando Corp Method for controlling suspension of vehicle
KR20020053589A (en) * 2000-12-27 2002-07-05 밍 루 Semi-active suspension system of the car
US20050159554A1 (en) * 2002-04-12 2005-07-21 Noriko Endou Process for producing modified polymer, modified polymer obtained by the process, and rubber composition

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691284A (en) * 1984-08-18 1987-09-01 Toyota Jidosha Kabushiki Kaisha Control system for three way variable shock absorber device for suspension with highest shock absorber effectiveness not selected in manual mode
US5159554A (en) * 1987-07-06 1992-10-27 Toyota Jidosha Kabushiki Kaisha Electronic controlled fluid suspension system
KR19980010408U (en) * 1996-08-06 1998-05-15 이정언 Electronically Controlled Tilting Suspension of Automobile
KR19980049096A (en) * 1996-12-19 1998-09-15 박병재 Automotive Anti Squat Control System
KR19980078675A (en) * 1997-04-29 1998-11-25 김영귀 Shock absorber device of vehicle and its control method
KR19980084126A (en) * 1997-05-21 1998-12-05 박문규 Semi-active suspension device for automobiles and control method thereof
KR20000027739A (en) * 1998-10-29 2000-05-15 밍 루 Electro control suspension apparatus
KR100285997B1 (en) * 1999-12-09 2001-01-09 Mando Corp Method for controlling suspension of vehicle
KR20020053589A (en) * 2000-12-27 2002-07-05 밍 루 Semi-active suspension system of the car
US20050159554A1 (en) * 2002-04-12 2005-07-21 Noriko Endou Process for producing modified polymer, modified polymer obtained by the process, and rubber composition

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