KR19980039089A - Electronic Control Suspension of Automobile - Google Patents
Electronic Control Suspension of Automobile Download PDFInfo
- Publication number
- KR19980039089A KR19980039089A KR1019960058046A KR19960058046A KR19980039089A KR 19980039089 A KR19980039089 A KR 19980039089A KR 1019960058046 A KR1019960058046 A KR 1019960058046A KR 19960058046 A KR19960058046 A KR 19960058046A KR 19980039089 A KR19980039089 A KR 19980039089A
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- South Korea
- Prior art keywords
- solenoid valve
- outputting
- road
- determined
- standard
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Classifications
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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
- B60G17/016—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
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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
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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
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- 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
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
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- 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
- B60G2600/22—Magnetic elements
- B60G2600/26—Electromagnets; Solenoids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
본 발명은 주행 도로에 따라 차체의 높이를 자동 조절함으로써 승차감을 향상하기 위하여 주행하게 될 도로의 상태를 판단하기 위하여 전방의 도로 기울기를 연산하는 제1단계와, 상기 제1단계에서 연산된 결과에 따라 주행 도로의 해당 모드를 선정하는 제2단계와, 상기 제2단계에서 도로가 오르막으로 판단된 경우, 오르막 주행에 맞는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제3단계와, 상기 제2단계에서 도로가 구덩이가 파인 것으로 판단된 경우, 구덩이를 안전하게 통과할 수 있는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제4단계와, 상기 제2단계에서 도로의 일부분이 튀어나온 것으로 판단된 경우, 튀어나온 지점을 안전하게 통과할 수 있는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제5단계로 이루어지는 자동차의 전자제어 현가장치에 관한 것이다.The present invention relates to a first step of calculating the inclination of the road ahead in order to determine the state of the road to be driven in order to improve the riding comfort by automatically adjusting the height of the vehicle body according to the driving road, and the result calculated in the first step A second step of selecting a corresponding mode of the driving road, and a third step of outputting a control signal to each solenoid valve to adjust to a height suitable for driving uphill when the road is determined to be uphill in the second step; If it is determined in step 2 that the road is dug, the fourth step of outputting a control signal to each solenoid valve in order to fit the garage into the garage that can pass safely, and the part of the road protruding in the second step If it is determined that a control signal is provided to each solenoid valve in order to fit the protruding point into a garage that can pass safely It relates to an electronic control suspension of a vehicle made of a fifth step of outputting.
Description
본 발명은 자동차의 현가장치에 관한 것으로서, 차체의 전/후측 뿐만 아니라 좌/우측을 개별적으로 또는 동시에 작동시킬 수 있도록 하여 도로 상황에 따라 차고의 높이를 조절함으로써 보다 쾌적한 주행이 이루어지도록 하기 위한 자동차의 전자제어 현가장치에 관한 것이다.The present invention relates to a suspension device for a vehicle, and to enable the front and rear of the vehicle body as well as the left and right sides to be operated individually or at the same time to adjust the height of the garage according to the road conditions for a more comfortable driving Relates to an electronically controlled suspension device.
자동차의 주행 상태에 따라 차체와 차축 사이에서 노면으로부터의 진동이나 충격을 완화하여 승차감을 향상시키고 자동차의 자세 변화를 최소화하여 조종 안정성 등을 향상시키기 위하여 자동차에는 스프링, 쇽 압소버, 스테빌라이저 등으로 이루어진 현가장치가 장착되어 있다.Depending on the driving condition of the vehicle, the vehicle has a spring, shock absorber, stabilizer, etc. to improve ride comfort by minimizing vibration and shock from the road surface between the body and the axle, and to minimize steering posture change. It is equipped with a suspension system.
일반적으로 자동차의 승차감과 조종 안정성은 서로 상반된 요구를 필요로 한다.In general, ride comfort and steering stability of vehicles require mutually opposite requirements.
따라서 노면의 미세한 진동까지 흡수하기 위해서는 스프링을 유연하게 하면 승차감은 좋으나 선회시 롤링이 심하며 제동시에는 다이브(dive)현상의 심화 등 조종 안정성이 불안하게 된다.Therefore, in order to absorb even the minute vibration of the road surface, if the spring is flexible, the riding comfort is good, but the rolling is severe during turning, and the braking stability such as the deepening of the dive phenomenon becomes unstable during braking.
그리고 반대로 스프링 상수가 클수록 조종 안정성은 좋지만 노면의 미세한 진동까지 차체에 전달되어 승차감을 떨어뜨리는 문제가 발생한다.On the contrary, the greater the spring constant, the better the steering stability, but even the slightest vibration of the road surface is transmitted to the vehicle body, causing a problem of deterioration.
상기와 같이 승차감이나 조종 안정성을 향상시키기 위한 서로 상반된 요구를 적절하게 제어하기 위하여 자동차의 주행 상태에 따라 서스펜션 특성을 제어하여 승차감이나 조종 안정성을 모두 만족시킬 수 있도록 하기 위해 현가장치를 전반적으로 제어하게 된다.As described above, in order to appropriately control mutually conflicting demands for improving ride comfort or steering stability, the suspension system is controlled according to the driving state of the vehicle to control the suspension and overall steering stability to satisfy both riding comfort and steering stability. do.
따라서 상기 전자제어 현가장치는 자동차의 주행 상태에 따라 스프링 상수나 댐핑력 그리고 차고를 조정한다.Therefore, the electronically controlled suspension adjusts the spring constant, the damping force and the garage according to the driving state of the vehicle.
자동차의 차고를 제어하기 위해, 종래에는 자동차의 앞뒤에 장착되는 차고센서의 신호를 이용하여 자동차의 전/후 높이에 따라 자동차의 전/후측에 장착되는서스펜션을 독립적으로 제어한다.In order to control a garage of a vehicle, conventionally, a suspension sensor mounted on the front / rear side of a vehicle is independently controlled according to the height of the front / rear of the vehicle by using signals of the height sensor mounted on the front and rear of the vehicle.
그러므로 전자제어 현가장치의 제어 장치는 자동차의 주행 상태에 따라 솔레노이드 밸브의 동작을 제어하여 저장 탱크에 저장되어 있는 고압의 에어가 전/후의 차고 조절 에어 밸브로의 공급이나 배출 동작을 제어하여 자동차 전/후의 차고를 제어한다.Therefore, the control device of the electronically controlled suspension device controls the operation of the solenoid valve according to the driving condition of the vehicle, thereby controlling the supply or discharge operation of the high pressure air stored in the storage tank to the garage control air valve before and after the vehicle. Control the garage after.
그러나, 종래의 기술은 주행 상태에 따라 현가장치를 제어하므로, 다양한 도로에서 노면의 모든 불규칙한 상황을 만족하기에 부족한 점이 있다.However, since the conventional technology controls the suspension according to the driving state, there is a shortage in satisfying all irregularities of the road surface on various roads.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 도로의 상태를 감지하여 각 솔레노이드 밸브에 제어신호를 출력하여 승차감과 조종 안정성을 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, the object of the present invention is to provide a ride comfort and steering stability by outputting a control signal to each solenoid valve by detecting the state of the road.
상기한 목적을 달성하기 위한 수단으로서 주행하게 될 도로의 상태를 판단하기 위하여 전방의 도로 기울기를 연산하는 제1단계와, 상기 제1단계에서 연산된 결과에 따라 주행 도로의 해당 모드를 선정하는 제2단계와, 상기 제2단계에서 도로가 오르막으로 판단된 경우, 오르막 주행에 맞는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제3단계와, 상기 제2단계에서 도로가 구덩이가 파인 것으로 판단된 경우, 구덩이를 안전하게 통과할 수 있는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제4단계와, 상기 제2단계에서 도로의 일부분이 튀어나온 것으로 판단된 경우, 튀어나온 지점을 안전하게 통과할 수 있는 차고로 맞추기 위하여 각 솔레노이드 밸브에 제어신호를 출력하는 제5단계로 이루어지는 것을 특징으로 한다.A first step of calculating the inclination of the road ahead in order to determine a state of the road to be driven as a means for achieving the above object; In step 2 and, if it is determined that the road is uphill in the second step, a third step of outputting a control signal to each solenoid valve in order to adjust to a garage suitable for driving uphill; and in the second step, the road is dug up. If it is determined, the fourth step of outputting a control signal to each solenoid valve in order to fit into the garage that can pass through the pit safely, and if it is determined in the second step that a part of the road is protruding, the protruding point safely And a fifth step of outputting a control signal to each solenoid valve in order to fit the garage which can pass. The.
도 1은 본 발명을 실현하기 위하여 구비되는 현가장치에 관한 블록도이고,1 is a block diagram of a suspension provided to realize the present invention,
도 2는 각 상태별로 분류한 도로를 도시한 도면이고,2 is a diagram illustrating roads classified by states;
도 3은 본 발명을 실현하기 위하여 실시되는 전자제어 현가장치의 순서도이다.3 is a flowchart of an electronically controlled suspension device implemented in order to realize the present invention.
이하, 첨부된 도면을 참조로 하여 본 발명의 가장 바람직한 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention.
본 발명의 구성을 도 1을 참고로 하여 설명하면 다음과 같다.Referring to the configuration of the present invention with reference to Figure 1 as follows.
전방의 도로의 상태를 검출하기 위하여 구비되는 초음파 센서(11)와, 차체의 기울기 및 높이를 검출하는 차고 센서(12)와, 자동차의 가속도를 검출하기 위한 가속도 센서(13)와, 운전자에 의한 조향 휠의 회전 방향과 각도에 따라 출력되는 전기 신호의 상태가 변화하는 조향각 센서(14)와, 운전자에 의한 가속 페달의 가압상태를 검출하는 스로틀 개도 센서(15)와, 자동차의 주행 속도에 따라 출력되는 전기 신호의 상태가 변화하는 차속 센서(16)와, 전방의 도로 상황을 감지하는 도로상황 센서(17)와, 상기 각 센서(11∼17)의 신호를 입력받아 전/후, 좌/우 솔레노이드 밸브(31∼32)에 제어신호를 출력하는 ECS(20)로 이루어진다.Ultrasonic sensor 11 provided for detecting the state of the road ahead, garage sensor 12 for detecting the inclination and height of the vehicle body, acceleration sensor 13 for detecting the acceleration of the vehicle, and The steering angle sensor 14, which changes the state of the electric signal output according to the rotation direction and angle of the steering wheel, the throttle opening sensor 15 which detects the pressurization state of the accelerator pedal by the driver, and the driving speed of the vehicle The vehicle speed sensor 16 in which the state of the output electrical signal changes, the road condition sensor 17 for detecting the road condition in front of it, and the signals of the sensors 11 to 17 are received before and after, The solenoid valve 31-32 consists of ECS20 which outputs a control signal.
상기와 같이 이루어지는 본 발명의 동작을 설명하면 다음과 같다.Referring to the operation of the present invention made as described above are as follows.
먼저 각 센서(11∼17)로 부터 인가되는 신호를 판독하여 전방의 도로 기울기를 연산하고(S100), 상기 S100에서 도로 기울기가 연산되면 차량의 기울기를 연산한다(S200 ).First, the slope of the road is calculated by reading signals applied from the sensors 11 to 17 (S100). When the slope of the road is calculated in S100, the slope of the vehicle is calculated (S200).
상기 S200에서 연산되는 차량의 기울기에 따라 오르막 도로에 해당하는가를 비교판단하고(S300), 상기 S300에서 오르막 도로로 판단되면 차량 기울기가 표준 상태인가를 비교 핀단한다(S310).In operation S300, a comparison is made according to the slope of the vehicle calculated in step S200. When it is determined that the road is an uphill road in step S300, it is determined whether the vehicle slope is in a standard state (S310).
상기 S310에서 차량 기울기가 표준 상태를 유지하는 것으로 판단되면 솔레노이드 밸브(FR/FL)에 서스펜션을 높히기 위한 중가 신호를 출력한다(S320).If it is determined in S310 that the vehicle inclination maintains a standard state, a weight signal for increasing the suspension is output to the solenoid valve FR / FL at step S320.
상기의 S320에서 솔레노이드 밸브 제어 출력이 완료되면 도 2의 ①에서 A지점을 통과하였는가를 비교 판단한다(S330).When the solenoid valve control output is completed in S320 above, it is determined whether or not the point A has passed through ① in FIG. 2 (S330).
상기 S330에서 A지점을 통과한 것으로 판단되면 솔레노이드 밸브(RR/RL)에증가신호를 출력하고(S340), 솔레노이드 밸브(FR/FL)에 감소신호를 출력한다(S341 ).If it is determined in S330 that the point A has passed, an increase signal is output to the solenoid valve RR / RL (S340), and a decrease signal is output to the solenoid valve FR / FL (S341).
그리고 각 솔레노이드 밸브 제어 출력이 완료되면 차량이 오르막을 완전히 통과하였는지를 비교 판단하여(S350), 오르막을 완전히 통과한 것으로 판단되면 표준 상태로 복귀하기 위하여 솔레노이드 밸브(FR/FL)와 솔레노이드 밸브(RR/RL)를 표준으로 맞추기 위한 신호를 출력한다(S360JS361).When each solenoid valve control output is completed, it is determined whether the vehicle completely passes the uphill (S350), and when it is determined that the vehicle has completely passed the uphill, the solenoid valve (FR / FL) and the solenoid valve (RR /) are returned. A signal for adjusting RL) to a standard is output (S360JS361).
따라서 오르막 도로에서는 오르막 진입전에 앞쪽의 차고가 높아지고 오르막을 올라갔을 경우 뒤쪽이 차고를 높혀주게 된다.Therefore, on the uphill road, the front garage increases before the uphill entry, and the rear raises the garage if you go uphill.
그러나, S300에서 도로가 오르막이 아닌 것으로 판단되면 구덩이가 파인 도로인지를 비교 판단한다(S400).However, if it is determined in S300 that the road is not uphill, it is determined whether the pit is a fine road (S400).
상기 S400에서 구덩이가 파인 도로로 판단되면 차량의 기울기가 표준 상태인지를 비교 판단하여(S410), 표준 상태를 유지하는 것으로 판단되면 솔레노이드 밸브(FR/FL)에 서스펜션을 높히기 위한 증가 신호를 출력한다(S420).If it is determined that the pit is a fine road in S400, it is determined whether the slope of the vehicle is in a standard state (S410), and if it is determined that the standard state is maintained, an increase signal for increasing the suspension is output to the solenoid valve (FR / FL) ( S420).
상기 S420에서 솔레노이드 밸브(FR/FL) 제어가 완료되면 앞바퀴가 도 2의 ②에 도시된 B지점을 통과하였는가를 비교 판단한다(S430).When the control of the solenoid valve (FR / FL) is completed in S420, it is determined whether the front wheel passes the point B shown in ② of FIG. 2 (S430).
상기 S430에서 B지점을 통과한 것으로 판단되면 솔레노이드 밸브(FR/FL)를표준으로 유지하기 위한 신호를 출력하고(S440), 솔레노이드 밸브(RR/RL)를 증가하는 신호를 출력한다(S441).If it is determined in step S430 that the point B has passed, a signal for maintaining the solenoid valve FR / FL as a standard is output (S440), and a signal for increasing the solenoid valve RR / RL is output (S441).
상기 S440, S441의 동작이 완료되면 뒷바퀴가 도 2의 ②에 도시된 B지점을 통과하였는지를 비교 판단한다(S450).When the operations of S440 and S441 are completed, it is determined whether the rear wheel has passed the point B shown in ② of FIG. 2 (S450).
상기 S450에서 뒷바퀴가 B지점을 통과한 것으로 판단되면 솔레노이드 밸브(RR/RL)을 표준으로 유지하기 위한 신호를 출력한다(S460).If it is determined in S450 that the rear wheel has passed the point B, a signal for maintaining the solenoid valve RR / RL as a standard is output (S460).
따라서 구덩이가 파인 도로에서는 앞쪽의 차고가 높아진 상태에서 구덩이의 중심부를 통과하고 중심부를 통과하고 난 뒤에는 뒤쪽의 차고가 높아지게 된다.Therefore, on the road where the pit is dug, the garage in the front of the pit is elevated and the garage in the rear is raised after passing through the center of the pit.
그러나, S400에서 구덩이가 파인 도로가 아닌 것으로 판단되면 튀어나온 도로인지를 비교 판단한다(S500).However, if it is determined that the pit is not a fine road in S400, it is determined whether or not the road that protrudes (S500).
상기 S500에서 튀어나온 도로가 아닌 것으로 판단되면 S300으로 리턴되어 다시 도로의 모드를 비교판단하고, 튀어나온 도로인 것으로 판단되면 차량의 기울기가 표준 상태인지를 비교 판단하여(S510), 표준 상태를 유지하는 것으로 판단되면 솔레노이드 밸브(FR/FL)에 감소 신호를 출력하고(S520), 솔레노이드 밸브(RR/RL)에 증가 신호를 출력한다(S521).If it is determined that the road is not protruding from the S500, it is returned to S300 to determine the mode of the road again, and if it is determined that it is the protruding road, it is determined whether the inclination of the vehicle is in the standard state (S510) and maintains the standard state. If it is determined that the output signal to the solenoid valve (FR / FL) (S520), the increase signal to the solenoid valve (RR / RL) (S521).
상기 S520, S521의 동작이 완료되면 차량이 도 2의 ③에 도시된 C지점을 통과하였는지를 비교 판단한다(S530).When the operations of S520 and S521 are completed, it is determined whether the vehicle has passed the point C shown in 3 in FIG. 2 (S530).
상기 S530에서 뒷바퀴가 차량이 C지점을 통과한 것으로 판단되면 표준 상태를 유지하는 것으로 판단되면 솔레노이드 밸브(FR/FL)를 표준으로 유지하기 위한 제어신호를 출력하고(S540), 솔레노이드 밸브(RR/RL)오 표준으로 맞추기 위한 제어신호를 출력한다(S541).If it is determined in S530 that the rear wheel passes the C point, the vehicle is outputted with a control signal for maintaining the solenoid valve (FR / FL) as a standard (S540), and the solenoid valve (RR / RL) A control signal for adjusting to the standard is output (S541).
따라서 튀어나온 도로에서는 앞쪽의 차고가 낮아지고 뒤쪽의 차고가 높아지게 된다.Therefore, on the protruding road, the front garage is lowered and the rear garage is higher.
그러므로 각 도로의 상황에 맞게 차고의 높이가 자동 조절되므로 차량 하부를 보호하는 효과가 있으며 전방 사각지대의 시야 확보에 유리해지는 효과가 있다.Therefore, since the height of the garage is automatically adjusted according to the situation of each road, there is an effect of protecting the lower part of the vehicle, which is advantageous in securing visibility of the front blind spot.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960058046A KR100250318B1 (en) | 1996-11-27 | 1996-11-27 | Vehicle electric control suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960058046A KR100250318B1 (en) | 1996-11-27 | 1996-11-27 | Vehicle electric control suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980039089A true KR19980039089A (en) | 1998-08-17 |
| KR100250318B1 KR100250318B1 (en) | 2000-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960058046A KR100250318B1 (en) | 1996-11-27 | 1996-11-27 | Vehicle electric control suspension |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100250318B1 (en) |
-
1996
- 1996-11-27 KR KR1019960058046A patent/KR100250318B1/en not_active IP Right Cessation
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| KR100250318B1 (en) | 2000-04-01 |
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