KR100599312B1 - Forward inertia movement preventing method in vehicle - Google Patents
Forward inertia movement preventing method in vehicle Download PDFInfo
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- KR100599312B1 KR100599312B1 KR1020040066185A KR20040066185A KR100599312B1 KR 100599312 B1 KR100599312 B1 KR 100599312B1 KR 1020040066185 A KR1020040066185 A KR 1020040066185A KR 20040066185 A KR20040066185 A KR 20040066185A KR 100599312 B1 KR100599312 B1 KR 100599312B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
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- 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
- B60Y2400/3032—Wheel speed sensors
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
본 발명은 차량의 정지 관성에 의한 전방 쏠림 방지 방법에 관한 것으로, 차량 제동시 조작되는 브레이크 페달의 답입량에 따른 제동압 발생을 다단계로 변화시켜 정지되는 차량의 주행 관성 크기를 줄여 차량과 탑승객의 전방 쏠림 현상을 방지함에 그 목적이 있다.The present invention relates to a method of preventing forward tilting due to a stop inertia of a vehicle. The present invention relates to a method of preventing front tilting by reducing the magnitude of inertia of a vehicle that is stopped by changing the amount of braking pressure generated in response to a depression amount of a brake pedal operated during vehicle braking. Its purpose is to prevent forward tilting.
상기와 같은 목적을 달성하기 위한 본 발명은, 제동압을 제어하는 능동모드 선택시 브레이크 페달 조작에 상응하는 제동압을 생성해 차륜 속도가 0(영)Km/h인지 여부를 판단한 후, The present invention for achieving the above object, after selecting the active mode to control the braking pressure generates a braking pressure corresponding to the brake pedal operation to determine whether the wheel speed is 0 (zero) Km / h,
차륜 속도가 0(영)Km/h으로 판단되면, 앞차와의 거리가 충분히 확보된 경우 차량의 전방 쏠림 현상을 방지하도록 브레이크 제동압을 저하시켜 주고,If the wheel speed is determined to be 0 (zero) Km / h, the brake braking pressure is lowered to prevent the vehicle from tipping when the distance to the vehicle ahead is secured.
브레이크 제동압 저하 후 차륜 속도가 0(영)Km/h보다 크고 1Km/h보다 작은지 여부를 판단하여, 차륜 속도가 0(영)Km/h보다 크면 브레이크 페달의 현 답입량에 따른 브레이크 제동압을 발생시켜 차륜속도가 0(영)Km/h이 될 때까지 차량을 제동시켜 주는 것을 특징으로 한다. After the brake braking pressure is lowered, it is determined whether the wheel speed is greater than 0 (zero) Km / h and less than 1 km / h. If the wheel speed is greater than 0 (zero) Km / h, brake brake according to the current depression amount of the brake pedal By generating dynamic pressure, the vehicle is braked until the wheel speed becomes 0 (zero) Km / h.
Description
도 1은 본 발명에 따른 차량의 정지 관성에 의한 전방 쏠림 방지 방법의 순서도1 is a flowchart of a method of preventing front tilting due to stop inertia of a vehicle according to the present invention.
본 발명은 차량의 정지시 전방 쏠림 방지 방법에 관한 것으로, 보다 상세하게는 안전거리를 확보하면서 제동압을 조정해 차량의 정지 관성에 의한 전방 쏠림을 방지하기 위한 방법에 관한 것이다.The present invention relates to a method for preventing front tilt when the vehicle is stopped, and more particularly, to a method for preventing front tilt due to a stop inertia of a vehicle by adjusting a braking pressure while securing a safety distance.
일반적으로, 차량의 주행 중 신호등이나 횡단보도 앞에서 정지할 경우 정지하려는 차량의 관성으로 인하여 차량은 물론 차량 내 운전자와 승객이 순간 앞으로 쏠리게 되는 현상이 발생하게 된다.In general, when a vehicle stops in front of a traffic light or a crosswalk while driving, a phenomenon in which the driver and the passenger in the vehicle as well as the vehicle are momentarily forward due to the inertia of the vehicle to stop.
이와 같은, 차량의 정지시 전방 쏠림 현상은 주행중인 차량의 제동 정도에 따라 큰 차이가 발생하는데 즉, 차량의 전방 쏠림 현상은 운전자가 조작하는 브레이크 페달을 밟는 조작성에 달려 있음은 물론이다.As such, the forward tilting when the vehicle is stopped greatly varies depending on the degree of braking of the vehicle being driven, that is, the forward tilting of the vehicle depends on the operability of stepping on the brake pedal operated by the driver.
그러나, 상기와 같은 차량의 정지시 전방 쏠림 현상은 단지 운전자의 브레이크 페달 조작 미숙으로 치부될 수 밖에 없는 한계가 있는 실정이므로, 이를 방지하기 위해 운전 조작이 미숙한 초보 운전자 또는 부주의에 따른 급격한 제동시에도 이와 같은 차량의 정지시 전방 쏠림 현상을 방지할 수 있는 기술의 개발이 절실히 요구되고 있는 실정이다.However, since the front tilting phenomenon of the vehicle as described above has a limitation that can only be regarded as a driver's immature brake pedal operation, in order to prevent this, during a sudden braking due to an inexperienced driver or an inexperienced driver, In addition, the development of a technology that can prevent the front tilting when the vehicle is stopped is urgently required.
이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 차량의 제동시 조작되는 브레이크 페달의 답입량에 따른 제동압 발생을 다단계로 변화시켜 정지되는 차량의 주행 관성 크기를 줄여 차량과 탑승객의 전방 쏠림 현상을 방지함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above, and changes the braking pressure generation according to the depression amount of the brake pedal operated when the vehicle is braked in multiple stages, thereby reducing the magnitude of the inertia of the vehicle that is stopped and the front of the vehicle and the passenger. The purpose is to prevent tipping.
상기와 같은 목적을 달성하기 위한 본 발명은, 제동압을 제어하는 능동모드 선택시 브레이크 페달 조작에 상응하는 제동압을 생성해 차륜 속도가 0(영)Km/h인지 여부를 판단하는 초기제동단계;The present invention for achieving the above object, the initial braking step of determining whether the wheel speed is 0 (zero) Km / h by generating a braking pressure corresponding to the brake pedal operation when selecting the active mode for controlling the braking pressure ;
차륜 속도가 0(영)Km/h으로 판단되면, 앞차와의 거리가 충분히 확보된 경우 차량의 전방 쏠림 현상을 방지하도록 브레이크 제동압을 저하시켜 주는 제동압저하단계;If the wheel speed is determined to be 0 (zero) Km / h, a braking pressure lowering step of lowering the brake braking pressure to prevent the vehicle from tipping when the distance between the vehicle ahead is secured;
브레이크 제동압 저하 후 차륜 속도가 0(영)Km/h보다 크고 1Km/h보다 작은지 여부를 판단하는 지속판단단계;Determining whether the wheel speed is greater than 0 (zero) Km / h and less than 1 Km / h after the brake braking pressure is lowered;
차륜 속도가 0(영)Km/h보다 크면 브레이크 페달의 현 답입량에 따른 브레이크 제동압을 발생시켜 차륜속도가 0(영)Km/h이 될 때까지 차량을 제동시켜 주는 최종제동단계로 이루어진 것을 특징으로 한다.If the wheel speed is greater than 0 (zero) Km / h, the brake braking pressure is generated according to the current depression amount of the brake pedal, and the final braking step is performed to brake the vehicle until the wheel speed reaches 0 (zero) Km / h. It is characterized by.
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이하 본 발명의 실시예를 첨부된 예시도면을 참조로 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 차량의 정지 관성에 의한 전방 쏠림 방지 방법의 순서도를 도시한 것인바, 본 발명은 운전자가 주행 중인 차량을 정지시키고자 브레이크 페달을 조작해 브레이크 장치가 브레이크 페달의 답입량에 따른 제동압을 생성할 때 제동압을 다단계로 제어할지 여부를 판단 즉, 차량이 주차를 위해 전·후진 상태인지 일반적인 주행상태인지에 따라 브레이크 조작시 능동모드(Active Mode ; 제동압을 제어하는 모드)와 수동모드(Passive Mode ; 제동압을 제어하지 않는 모드)를 선택할지 결정하게 된다[S10 ~ S30].1 is a flowchart illustrating a method of preventing front tilting due to a stop inertia of a vehicle according to the present invention. In the present invention, a brake device is operated by a brake device to stop a vehicle in which a driver is driving. Determining whether to control the braking pressure in multiple stages when generating the braking pressure according to the control, that is, controlling the braking pressure during the brake operation according to whether the vehicle is in the forward, reverse or normal driving state for parking. Mode) and passive mode (mode that does not control braking pressure) are selected [S10 ~ S30].
이때, 상기 능동모드와 수동모드는 운전자가 직접 조작하는 모드 버튼의 조작 신호에 따라 결정된 상태에 맞추어 ABS 제어용 콘트롤러(ECU)가 브레이크 제동압 생성을 제어할 수도 있고, 또한 브레이크페달의 답입량이 상대적으로 급격하게 될 때 이를 감지하는 콘트롤러(ECU)에서 능동모드로 판단해 브레이크 제동압 생성을 제어할 수도 있음은 물론이다.In this case, in the active mode and the passive mode, the ABS controller (ECU) may control the brake braking pressure generation according to the state determined according to the operation signal of the mode button directly operated by the driver, and the amount of depression of the brake pedal is relative. As a result, the controller (ECU) that detects the sudden change may determine the active mode to control the brake braking pressure generation.
이어, 능동모드에서 차량 제동이 수행되면 브레이크 페달 답입량에 따른 제동압에 의한 제동에 따라 차륜 속도가 0(영)Km/h인지 여부를 판단하게 된다[S40].Subsequently, when the vehicle braking is performed in the active mode, it is determined whether the wheel speed is 0 (zero) Km / h according to the braking by the braking pressure according to the brake pedal depression amount [S40].
이때, 차륜 속도가 0(영)Km/h이 아닌 경우는 브레이크 페달 답입량에 따른 제동압으로 제동을 수행해 차륜 속도를 0(영)Km/h으로 만들어 주게 된다.At this time, when the wheel speed is not 0 (zero) Km / h, the braking pressure is braked according to the brake pedal depression amount to make the wheel speed 0 (zero) Km / h.
그러나, 상기 S40 단계에서 차륜 속도가 0(영)Km/h으로 되면, 차체 전방에 구비된 초음파나 레이저를 이용한 거리측정센서가 앞쪽의 차량과 자차와의 거리를 측정한 후 앞차와의 거리(d)가 1.5m 이상일 경우 차량의 전방 쏠림 현상을 방지하도록 브레이크 제동압을 저하시켜 주게 된다[S50 ~ S70]. 이때, 브레이크 제동압 저하는 브레이크 페달 답입량에 따라 발생되는 제동압에 대한 상대적인 저하임은 물론이다.However, when the wheel speed is 0 (zero) Km / h in the step S40, the distance sensor using the ultrasonic wave or laser provided in front of the vehicle measures the distance between the vehicle in front of the vehicle and the distance between the vehicle in front of the vehicle ( If d) is 1.5m or more, the brake braking pressure is reduced to prevent the vehicle from tipping [S50 ~ S70]. At this time, the brake braking pressure drop is a relative decrease with respect to the braking pressure generated according to the brake pedal depression amount.
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이어, 브레이크 제동압 저하 정도가 브레이크 페달 답입량에 따라 발생되는 정상적인 제동압에 대해 1/3정도의 크기로 감소될 때까지 지속적으로 수행한 후[S80], 차륜 속도가 0(영)Km/h보다 크고 1Km/h보다 작은지 여부를 판단한다[S90].Subsequently, after the brake braking pressure drop was reduced to about 1/3 of the normal braking pressure generated by the brake pedal depression [S80], the wheel speed was 0 (zero) Km /. It is determined whether it is larger than h and smaller than 1 Km / h [S90].
이후, 차륜 속도가 0(영)Km/h ~ 1Km/h 범위 내에 포함되면 재차 차륜속도가 0(영)Km/h 인지를 판단한 후, 만약 차륜속도가 0(영)Km/h이 아니면 차륜속도가 0(영)Km/h이 될 때까지 브레이크 페달의 현 답입량에 따른 브레이크 제동압을 발생시켜 차륜속도가 0(영)Km/h이 될 때까지 차량을 제동시켜 주게 된다[S100, S110].Then, if the wheel speed is within the range of 0 (zero) Km / h ~ 1Km / h, it is again determined whether the wheel speed is 0 (zero) Km / h, and if the wheel speed is not 0 (zero) Km / h The brake braking pressure is generated according to the current depression amount of the brake pedal until the speed reaches 0 (zero) Km / h, and the vehicle is braked until the wheel speed reaches 0 (zero) Km / h [S100, S110].
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이상 설명한 바와 같이 본 발명에 의하면, 차량의 제동시 앞차와의 간격을 충분히 유지하면서 급격한 제동에 의한 차량의 전방 쏠림 현상을 방지할 수 있도록, 브레이크 페달에 상응하는 제동압 생성 대신 완만한 브레이크 페달조작에 상응하는 제동압을 생성시켜 급격한 페달 조작시에도 쏠림현상 등에 의한 탑승자의 불쾌감을 방지할 수 있는 효과를 갖는다.As described above, according to the present invention, a gentle brake pedal operation instead of generating a braking pressure corresponding to the brake pedal can be prevented while the vehicle is braking while preventing the front tilting of the vehicle due to rapid braking while maintaining a sufficient distance from the front vehicle. By generating a braking pressure corresponding to this has an effect that can prevent the discomfort of the occupant due to the phenomenon such as the tipping phenomenon even during sudden pedal operation.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR970040609A (en) * | 1995-12-19 | 1997-07-24 | 김태구 | Brake system |
KR19990061293A (en) * | 1997-12-31 | 1999-07-26 | 정몽규 | Inertial force reduction device |
KR20030003461A (en) * | 2001-07-02 | 2003-01-10 | 이기춘 | Method and apparatus for shortening a braking distances of vehicle |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR970040609A (en) * | 1995-12-19 | 1997-07-24 | 김태구 | Brake system |
KR19990061293A (en) * | 1997-12-31 | 1999-07-26 | 정몽규 | Inertial force reduction device |
KR20030003461A (en) * | 2001-07-02 | 2003-01-10 | 이기춘 | Method and apparatus for shortening a braking distances of vehicle |
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