KR19980060218A - Brake control system - Google Patents
Brake control system Download PDFInfo
- Publication number
- KR19980060218A KR19980060218A KR1019960079572A KR19960079572A KR19980060218A KR 19980060218 A KR19980060218 A KR 19980060218A KR 1019960079572 A KR1019960079572 A KR 1019960079572A KR 19960079572 A KR19960079572 A KR 19960079572A KR 19980060218 A KR19980060218 A KR 19980060218A
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- South Korea
- Prior art keywords
- pressure
- voltage
- chamber
- braking
- amplifying
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Classifications
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
-
- 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
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
-
- 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
- B60Y2400/306—Pressure sensors
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
전자 제어 제동장치에서 운행되는 자동차의 속도를 감속시키거나 정지시키고자 하는 제동력의 발생시 부스터 및 압력제어 밸브간의 진공실과 대기압실의 압력차를 피드백 검출하여 안정된 정밀제어를 실행하도록 한 것으로, 공급되는 전압을 안정되게 유지하여 정전류 드라이브하는 증폭수단과, 상기 증폭수단의 전압에 따라 브레이크 부스터와 유압제어 밸브간의 진공실과 대기압실의 압력차를 검출하는 압력검출수단과, 상기 압력검출수단의 신호를 비교 증폭하는 비교수단과, 상기 피드백 검출되는 진공실과 대기압실의 압력차를 분석하여 제동 압력을 정밀 제어하는 제어수단을 구비하는 것을 특징으로 한다.When the braking force is generated to decelerate or stop the speed of the vehicle driven by the electronically controlled braking system, the pressure difference between the vacuum chamber and the atmospheric pressure chamber between the booster and the pressure control valve is feedback detected to perform stable precision control. Amplifying means for driving a constant current while maintaining a stable voltage, a pressure detecting means for detecting a pressure difference between a vacuum booster and an atmospheric pressure chamber between the brake booster and the hydraulic control valve according to the voltage of the amplifying means, and amplifying a signal of the pressure detecting means. And a comparison means and a control means for precisely controlling the braking pressure by analyzing the pressure difference between the vacuum chamber and the atmospheric pressure chamber in which the feedback is detected.
Description
본 발명은 전자 제어 제동장치에 관한 것으로, 보다 더 상세하게는 운행되는 자동차의 속도를 감속시키거나 정지시키고자 하는 제동력의 발생시 부스터 및 압력 제어 밸브간의 진공실과 대기압실의 압력차를 피드백 검출하여 안정된 정밀제어를 실행하도록 한 자동차의 제동 제어장치에 관한 것이다.The present invention relates to an electronically controlled braking device, and more particularly, by detecting a pressure difference between a vacuum chamber and an atmospheric pressure chamber between a booster and a pressure control valve when a braking force is generated to reduce or stop the speed of a driving vehicle. The present invention relates to a braking control device for a vehicle that executes precise control.
종래의 자동차에 구비되는 전자 제어 제동장치는 브레이크 페달을 통한 제동력의 발생이 검출되면 휠속 검출수단에서 인가되는 차속의 정보와 슬립율 및 감 가속도 등의 운행정보에 대해서만 디스크 측에 유입되는 압력을 조정하여 제동 제어를 실행하였다.The electronically controlled braking device provided in the conventional vehicle adjusts the pressure flowing into the disc side only for the information of the vehicle speed applied to the wheel speed detecting means and the driving information such as slip rate and deceleration acceleration when the occurrence of the braking force through the brake pedal is detected. To execute the braking control.
따라서, 종래의 전자 제어 제동장치에서는 실질적으로 압력을 발생시켜 주는 부스터의 압력상태가 검출되지 않아 대기압실과 진공실의 압력 차이로 인하여 정상적인 제동력이 확보되지 못하는 문제점이 있으며, 정밀제어가 실행되지 못하는 문제점이 있었다.Therefore, in the conventional electronically controlled braking device, there is a problem that a normal braking force cannot be secured due to the pressure difference between the atmospheric pressure chamber and the vacuum chamber because the pressure state of the booster that substantially generates pressure is not detected, and precise control cannot be executed. there was.
본 발명은 전술한 바와 같은 문제점을 감안하여 안출한 것으로, 그 목적은 브레이크 부스터와 압력 제어 밸브 사이의 진공실과 대기압실을 관통하여 연결한 다음 그 사이에 차압센서를 더 구비하여 진공실과 대기압실간의 압력차이를 피드백 검출하여 제동력의 발생시 압력차에 따른 정밀제어가 실행되도록 하여 제동 제어에 안정성을 유지하도록 한 것이다.The present invention has been made in view of the above-described problems, and an object thereof is to connect through a vacuum chamber and an atmospheric pressure chamber between a brake booster and a pressure control valve, and further include a differential pressure sensor therebetween, By detecting the pressure difference feedback, precise control according to the pressure difference is executed when the braking force is generated to maintain stability in the braking control.
이와 같은 목적을 달성하기 위한 본 발명은 공급되는 전압을 안정되게 유지하여 정전류 드라이브하는 증폭수단과; 상기 증폭수단의 전압에 따라 브레이크 부스터와 유압제어 밸브간의 진공실과 대기압실의 압력차를 검출하는 압력검출수단과; 상기 압력검출수단의 신호를 비교 증폭하는 비교수단과; 상기 피드백 검출되는 진공실과 대기압실의 압력차를 분석하여 제동 압력을 정밀 제어하는 제어수단을 구비하는 것을 특징으로 한다.The present invention for achieving the above object is amplifying means for driving a constant current by maintaining a stable voltage supplied; Pressure detecting means for detecting a pressure difference between the vacuum chamber and the atmospheric pressure chamber between the brake booster and the hydraulic control valve according to the voltage of the amplifying means; Comparison means for comparatively amplifying the signal of the pressure detecting means; And controlling means for precisely controlling the braking pressure by analyzing a pressure difference between the vacuum chamber and the atmospheric pressure chamber in which the feedback is detected.
도 1은 본 발명의 일 실시예에 따른 자동차의 제동 제어장치의 구성도이고,1 is a block diagram of a brake control apparatus for a vehicle according to an embodiment of the present invention,
도 2는 제동장치에서 브레이크 부스터와 압력 제어밸브간의 구성도이다.2 is a configuration diagram between the brake booster and the pressure control valve in the braking device.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 일 실시예를 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1에서 알 수 있는 바와 같이 본 발명의 일 실시예에 따른 자동차의 제동 제어장치에서 증폭기(10)는 전압 플로워(Voltage Follower)로, 공급전원(BA)을 전류 제한하는 저항(R1)과 저항(R2) 사이의 접점에 일측단자(+)가 연결되고, 다른 일측단자(-)는 기준전압이 설정되는 제너 다이오드(ZD)가 연결되어 전류 제한 저항(R1)(R2)을 통해 공급되는 전원을 소정의 상태로 처리하여 차압센서(20)의 구동 정전류를 드라이브 한다.As can be seen in Figure 1 in the brake control apparatus of the vehicle according to an embodiment of the present invention, the amplifier 10 is a voltage follower (Voltage Follower), a resistor (R1) and a resistor to limit the current of the power supply (BA) One terminal (+) is connected to the contact between (R2), the other terminal (-) is connected to the zener diode (ZD) is set the reference voltage is supplied through the current limiting resistor (R1) (R2) Is processed in a predetermined state to drive the constant current driving of the differential pressure sensor 20.
차압센서(20)는 첨부된 도 2에서 알 수 있는 바와 같이 브레이크 부스터(100)와 압력제어 밸브(200) 사이의 진공실(b)과 대기압실(a) 간에 설치되어 제동력의 발생시 진공실(b)과 대기압실(a) 간의 압력차를 검출한 다음 그에 대한 소정의 신호를 출력한다.As shown in FIG. 2, the differential pressure sensor 20 is installed between the vacuum chamber b between the brake booster 100 and the pressure control valve 200 and the atmospheric pressure chamber a to generate a braking force. And a pressure difference between the atmospheric pressure chamber (a) is detected and a predetermined signal is output.
비교부(30)는 차압센서(20)에서 저항(R4)을 통해 일측단자(-)로 인가되는 신호와 저항(R5)을 통해 다른 일측단자(+)로 인가되는 신호를 비교 증폭하여 검출되는 진공실(b)과 대기압실(a) 간의 압력차 신호를 출력한다.The comparator 30 is detected by comparing and amplifying a signal applied to one side terminal (−) through the resistor R4 and a signal applied to the other side terminal (+) through the resistor R5 in the differential pressure sensor 20. The pressure difference signal between the vacuum chamber b and the atmospheric pressure chamber a is output.
제어부(40)는 상기 비교부(30)에 인가되는 신호에 따라 부스터(100)와 유압 제어 밸브(200)간의 진공실(b) 압력과 대기압실(a) 압력을 분석한 다음 디스크측에 유입되는 유압 조정 및 제동 압력 조정을 실행한다.The controller 40 analyzes the vacuum chamber (b) pressure and the atmospheric pressure chamber (a) pressure between the booster 100 and the hydraulic control valve 200 according to the signal applied to the comparator 30, and then flows into the disk side. Perform hydraulic pressure adjustment and braking pressure adjustment.
또한, 제어부(40)는 공급전원(BA)단의 저항(R2)과 저항(R3) 사이의 접점(A)에 연결되어 배터리의 방전등으로 인하여 검출되는 전압이 일정 값 이하로 판단되는 경우 상기 차압 센서(20)에서 검출되는 신호를 무시한다.In addition, the controller 40 is connected to the contact point A between the resistor R2 and the resistor R3 of the supply power source BA, and when the voltage detected by the discharge of the battery is determined to be equal to or less than a predetermined value, the differential pressure Ignore the signal detected by the sensor 20.
전술한 바와 같은 기능을 구비하여 이루어지는 본 발명에서 제동 피드백 제어에 대한 동작을 설명하면 다음과 같다.Referring to the operation of the braking feedback control in the present invention having the function as described above are as follows.
이그니션 접점의 선택으로 자동차에 구비되는 각 부하장치에 전원이 공급되면 저항(R1)과 저항(R2)의 전류 제한을 통해 배터리(BA)의 전원이 증폭기(10)의 일측단자(+)에 인가된다.When power is supplied to each load device provided in the vehicle by selecting the ignition contact, the power of the battery BA is applied to one terminal (+) of the amplifier 10 through the current limiting of the resistors R1 and R2. do.
이때, 증폭기(10)는 다른 일측단자(-)에 제너 다이오드(ZD)로 설정된 기준전압(대략 6.8V)에 따라 공급되는 전원을 증폭하여 차압센서(20)에서 필요로 하는 안정된 정전류(대략 1.5mA)를 출력하여 차압센서(20)의 구동전압으로 인가한다.At this time, the amplifier 10 amplifies the power supplied to the other terminal (-) according to the reference voltage (approximately 6.8V) set as the zener diode (ZD) to stabilize the constant current required by the differential pressure sensor 20 (approximately 1.5). mA) is output and applied as the driving voltage of the differential pressure sensor 20.
이와 같이 차압센서(20)가 동작 대기의 상태에서 운행되는 자동차의 차속을 감속시키거나 정지시키기 위하여 브레이크 페달을 통하여 제동력을 발생시키게 되면 브레이크 부스터(100)는 압력을 발생시켜 구동되는 압력을 유압 제어 밸브(200)측에 공급한다.As such, when the differential pressure sensor 20 generates a braking force through the brake pedal to slow down or stop the vehicle speed of the vehicle running in the standby state, the brake booster 100 generates a pressure to control the hydraulic pressure driven. Supply to the valve 200 side.
이때, 첨부된 도 2에서 알 수 있는 바와 같이 브레이크 부스터(100)와 유압제어 밸브(200) 사이의 진공실(b)과 대기압실(a)을 관통시켜 설치되어 있는 차압센서(20)는 진공실(b)과 대기압실(a)간의 압력차를 검출한 다음 그에 대한 신호를 저항(R4)과 저항(R5)을 통해 비교기(30)측에 각각 인가한다.At this time, as can be seen in Figure 2 attached to the differential pressure sensor 20 is installed through the vacuum chamber (b) and the atmospheric pressure chamber (a) between the brake booster 100 and the hydraulic control valve 200 is a vacuum chamber ( The pressure difference between b) and the atmospheric pressure chamber (a) is detected and then a signal thereof is applied to the comparator 30 through the resistor R4 and the resistor R5, respectively.
비교기(30)는 인가되는 진공실(b)과 대기압실(a)간의 압력상태를 비교 증폭한 다음 제어부(40)측에 인가하면 제어부(40)는 인가되는 압력차의 분석을 통해 설정된 프로그램에 따라 휠의 구속을 위해 디스크측에 유입되는 유압의 조정과 동시에 부스터의 제동 압력을 조정하여 안정된 제동력을 유지하여 준다.The comparator 30 compares and amplifies the pressure state between the applied vacuum chamber (b) and the atmospheric pressure chamber (a), and applies the result to the control unit 40. The control unit 40 according to the program set through analysis of the applied pressure difference is performed. In order to restrain the wheel, the hydraulic pressure flowing into the disk side is adjusted, and the braking pressure of the booster is adjusted to maintain stable braking force.
이때, 전원단에서 저항(R2)과 저항(R3)의 전류 제한을 통해 A 접점에서 검출되는 배터리(BA)의 전원이 기준 값(대략 10V) 이하로 검출되는 경우 배터리(BA)의 전원이 안정되지 못한 상태로 인지하여 상기 피드백 검출되는 차압센서(20)의 신호를 무시한다.At this time, when the power of the battery BA detected at the A contact point is lower than the reference value (approximately 10 V) through the current limiting of the resistors R2 and R3 at the power supply terminal, the power of the battery BA is stable. The signal of the differential pressure sensor 20 which detects the feedback and ignores the feedback is ignored.
이상에서 설명한 바와 같이 본 발명은 제동 제어시 브레이크 부스터와 유압조정 밸브간의 진공실 및 대기압실간의 압력차를 검출한 다음 피드백 신호로 인가하여 제동 제어에 정밀성을 부여하여 안정된 제동성능을 유지하므로 운행에 신뢰성을 제공한다.As described above, the present invention detects the pressure difference between the vacuum chamber and the atmospheric pressure chamber between the brake booster and the hydraulic control valve during braking control, and then applies it as a feedback signal to impart precision to the braking control to maintain stable braking performance. To provide.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960079572A KR100256759B1 (en) | 1996-12-31 | 1996-12-31 | Auto-brake device of a car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960079572A KR100256759B1 (en) | 1996-12-31 | 1996-12-31 | Auto-brake device of a car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980060218A true KR19980060218A (en) | 1998-10-07 |
| KR100256759B1 KR100256759B1 (en) | 2000-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960079572A KR100256759B1 (en) | 1996-12-31 | 1996-12-31 | Auto-brake device of a car |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100256759B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000027027A (en) * | 1998-10-26 | 2000-05-15 | 밍 루 | Booster for anti-lock brake system and control method thereof |
| KR100382679B1 (en) * | 1999-02-10 | 2003-05-09 | 주식회사 만도 | Device for prevention from revolution of vehicle in sudden stop |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100357612B1 (en) * | 2000-12-26 | 2002-10-25 | 현대자동차주식회사 | Apparatus and method for controlling differential pressure with flexible gain adaption of active booster |
-
1996
- 1996-12-31 KR KR1019960079572A patent/KR100256759B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000027027A (en) * | 1998-10-26 | 2000-05-15 | 밍 루 | Booster for anti-lock brake system and control method thereof |
| KR100382679B1 (en) * | 1999-02-10 | 2003-05-09 | 주식회사 만도 | Device for prevention from revolution of vehicle in sudden stop |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100256759B1 (en) | 2000-06-01 |
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