KR940011847B1 - Method of steering control of vehicle - Google Patents
Method of steering control of vehicle Download PDFInfo
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- KR940011847B1 KR940011847B1 KR1019920011927A KR920011927A KR940011847B1 KR 940011847 B1 KR940011847 B1 KR 940011847B1 KR 1019920011927 A KR1019920011927 A KR 1019920011927A KR 920011927 A KR920011927 A KR 920011927A KR 940011847 B1 KR940011847 B1 KR 940011847B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
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Abstract
Description
제1도는 종래의 자동차 조향제어장치의 블럭도.1 is a block diagram of a conventional vehicle steering control apparatus.
제2도는 본 발명 자동차 조향제어장치의 블럭도.2 is a block diagram of the vehicle steering control apparatus of the present invention.
제3도는 본 발명 자동차 조향제어장치의 플로우챠트.3 is a flowchart of the vehicle steering control apparatus of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
ENG-S : 엔진회전수센서 SP-S : 차속센서ENG-S: Engine Speed Sensor SP-S: Vehicle Speed Sensor
1 : 전자제어장치 SOL : 비례솔레노이드1: Electronic controller SOL: Proportional solenoid
TPS : 트로틀밸브 개도감지센서 S : 고장진단용 출력신호단자TPS: Throttle valve opening sensor S: Output signal terminal for troubleshooting
본 발명은 자동차의 조향제어방법에 관한 것으로, 특히 자동차시동전에 전류소모를 최소화하고, 차속신호의 에러를 트로틀밸브 개도감지센서를 사용하여 차속센서의단선여부를 판정함과 아울러, 각 고장신호 출력할 수 있도록 한 자동차의 조향 제어방법에 관한 것이다.The present invention relates to a steering control method of a vehicle, and particularly, to minimize the current consumption before starting the vehicle, and to determine whether the vehicle speed sensor is disconnected by using the throttle valve opening detection sensor and outputting each fault signal. It relates to a steering control method of a vehicle to enable.
종래의 자동차 조향제어방법은 제1도에 도시한 바와 같이 시스템에 구동전원을 공급하게 되는 이그니션스위치(ING-SW)와, 엔진의 회전수를 감지하는 엔진회전수센서(ENG-S)와, 차속을 감지하는 차속센서(SP-S)와, 상기 엔진회전수센서(ENG-S), 차속센서(SP-S)로부터 입력되는 감지신호를 제어하여 제어된 신호를 출력하는 전자제어장치(1)와, 상기 전자제어장치(1)에서 출력되는 신호에 의해 비례제어되는 액츄에이터는 비례솔레노이드(SOL)로 구성되어, 전자제어장치(1)는 차속센서(SP-S)에 따라서 비례솔레노이드(SOL)의 전류를 제어함으로써, 조향혁이 가변되고 차속센서(SP-S)의 단선은 엔진회전수센서(ENG-S)를 이용하여 간접적으로 체크하도록 구성되어 있다.The conventional vehicle steering control method includes an ignition switch (ING-SW) for supplying driving power to the system as shown in FIG. 1, an engine speed sensor (ENG-S) for detecting an engine speed, and Electronic control device for controlling the detection signal input from the vehicle speed sensor (SP-S) and the engine speed sensor (ENG-S), the vehicle speed sensor (SP-S) for detecting a vehicle speed (1) And the actuator proportionally controlled by the signal output from the electronic control device 1 is composed of a proportional solenoid SOL, and the electronic control device 1 is a proportional solenoid SOL according to the vehicle speed sensor SP-S. By controlling the electric current of the motor), the steering wheel is variable and the disconnection of the vehicle speed sensor SP-S is indirectly checked using the engine speed sensor ENG-S.
즉 엔진회전수센서(ENG-S)의 신호를 받아 어느 일정엔진회전수 이상에서 차속신호가 일정시간이상 입력이 없다고 판정될 경우, 차속센서(SP-S)의 단선이라 판정하여 비례솔레노이드(SOL)의 전류제어룰 중지시킴으로서, 조향력을 최대로 무겁게 되어 차량이 저속주행시 차속센서(SP-S)의 단선이라 판정 될수도 있으며, 이때 조향력은 갑자기 최대로 무겁게 되어 운전자에게 위험을 초래하게 되는 한편, 엔진을 시동걸지 않고 이그니션스위치(ING-SW)만을 온상태로 접속할 경우, 전자제어장치(1)가 작동되어 비례솔레노이드(SOL)의 전류를 최대로 하여 전류소모가 많게되는 문제점을 가지게 되었다.That is, when the engine speed sensor (ENG-S) receives a signal and determines that the vehicle speed signal is not input for a certain time or more at a certain engine speed, it is determined that the vehicle speed sensor (SP-S) is disconnected and the proportional solenoid (SOL) By stopping the current control rule, the steering force becomes maximum heavy, and the vehicle may be judged to be disconnection of the SP-S when driving at low speed, and the steering force suddenly becomes heavy to the maximum and poses a danger to the driver. When only the ignition switch (ING-SW) is connected to the on state without starting, the electronic control device 1 operates to maximize the current of the proportional solenoid SOL, which causes a problem of high current consumption.
따라서 본 발명의 목적은 자동차 시동전에 전류소모를 최소화 시키며, 차속신호의 에러를 트로블밸브 개도감지센서를 판정하여 고장이 발생시 에러신호를 출력시킬 수 있도록 하는데 있다.Therefore, an object of the present invention is to minimize the current consumption before starting the vehicle, and to determine the trouble detection sensor of the vehicle speed signal to output the error signal when a failure occurs.
상기의 목적을 실현하기 위하여 본 발명은, 자동차 시동시 엔진의 회전수를 감지하고, 감지된 신호에 따라 차속센서로 차속을 계산하며, 계산된 차속에 따른 비례솔레노이드를 제어한 후, 트로틀밸브 개도감지센서로 부터 차속센서의 단선신호를 입력시키도록 된 차속입력 단계와, 상기 차속센서 입력단계에서 입력된 신호로부터 차속센서 단선신호를 판단한 후 단선시 단선에 대한 에러신호를 출력하는 차속센서 고장진단 신호출력단계와, 솔레노이드 제어전압 대비 피드백 전압으로부터 솔레노이드 단선상태를 판단하여 단선시 단선에 대한 고장진단용 에러신호를 출력하는 비례솔레노이드 고장 진단신호 출력단계로 이루어진다.In order to realize the above object, the present invention detects the rotational speed of the engine when the vehicle is started, calculates the vehicle speed by the vehicle speed sensor according to the detected signal, controls the proportional solenoid according to the calculated vehicle speed, and then opens the throttle valve. The vehicle speed sensor fault diagnosis is performed to input the disconnection signal of the vehicle speed sensor from the detection sensor, and the vehicle speed sensor breakdown signal is output after determining the vehicle speed sensor disconnection signal from the signal input in the vehicle speed sensor input step and outputting an error signal for disconnection. And a proportional solenoid failure diagnosis signal output step of determining a solenoid disconnection state from the feedback voltage relative to the solenoid control voltage and outputting a fault diagnosis error signal for disconnection.
이하 첨부된 도면에 의거 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 발명에 적용되는 자동차의 조향제어장치의 회로도로서, 이그니션스위치(ING-SW), 엔진회전수센서(ENG-S), 차속센서(SP-S)로부터 입력신호를 제어하며, 비례솔레노이드(SOL)를 제어하도록 된 전자제어장치(1)로 구성된 자동차의 조향 제어장치에 있어서, 상기 전자제어장치(1)에 차속센서(SP-S)의 단선유무를 감지하는 트로틀밸브 개도감지센서(TPS)를 접속하고, 상기 각 센서로부터 입력되는 신호에 따라서 차속센서의 단선, 비례솔레노이드의 단선 발생시 고장진단용 출력신호(S)를 출력토록 구성하여서 된것이다.FIG. 2 is a circuit diagram of a steering control apparatus for a vehicle applied to the present invention, and controls input signals from an ignition switch (ING-SW), an engine speed sensor (ENG-S), and a vehicle speed sensor (SP-S), and proportionally. In a steering control apparatus for a vehicle composed of an electronic control device (1) configured to control a solenoid (SOL), a throttle valve opening degree sensor for detecting the disconnection of the vehicle speed sensor (SP-S) in the electronic control device (1) (TPS) is connected, and the output of the fault diagnosis output signal (S) is outputted in the event of disconnection of the vehicle speed sensor and disconnection of the proportional solenoid according to the signals input from the respective sensors.
제3도는 본 발명 자동차의 조향제어방법의 플로우챠트로서, 자동차시동시, 엔진센서(ENG-S)로 엔진의 회전수를 감지하는 엔진회전수감지단계(300)와, 상기 차속센서(SP-S)로 차속을 감지하여 차속을 계산하는 차속계산단계(301)와, 상기 차속계산단계(301)에서 계산된 차속에 따른 비례솔레노이드(SOL)를 제어하는 비례솔레노이드 제어단계(302)와, 상기 트로틀밸브 개도감지센서 신호입력단계(303)로 수행되는 차속입력단계(400)와, 상기 트로틀밸브 개도감지센서 신호입력단계(303)로 부터 입력되는 차속센서의 단선신호입력을 판단하는 단선신호 입력판단단계(304)와, 상기 단선신호입력판단단계(304)에서 단선신호로 판단되며, 차속에러신호를 출력하는 차속에러 신호출력단계(305)로 수행되는 차속센서고장진단용 신호출력단계(450)와, 상기 솔레노이드제어피드백 전압 입력상태로 비례솔레노이드의 단선유무를 판단하게 되고, 비례솔레노이드 단선판단단계(306)와, 상기 비례솔레노이드 판단단계(306)에서 단선판단시, 비례솔레노이드 에러신호를 출력시키는 비례솔레노이드 에러출력단계(307)로 수행되는 고장진단용 비례솔레노이드 에러신호출력단계(500)로 이루어진 것이다.3 is a flowchart of a steering control method for a vehicle according to the present invention, wherein the engine speed detection step 300 detects the engine speed by the engine sensor ENG-S and the vehicle speed sensor SP- when the vehicle starts up. S) a vehicle speed calculation step 301 for calculating a vehicle speed by detecting a vehicle speed, a proportional solenoid control step 302 for controlling a proportional solenoid SOL according to the vehicle speed calculated in the vehicle speed calculation step 301, and the The disconnection signal input for determining the disconnection signal input of the vehicle speed sensor inputted from the vehicle speed input step 400 performed by the throttle valve opening detection sensor signal input step 303 and the throttle valve opening detection sensor signal input step 303. The vehicle speed sensor fault diagnosis signal output step 450, which is determined as the disconnection signal in the determination step 304 and the disconnection signal input determination step 304, is performed by the vehicle speed error signal output step 305 for outputting a vehicle speed error signal. And the solenoid control feed In the voltage input state, the presence or absence of the disconnection of the proportional solenoid is determined, and the proportional solenoid error output step of outputting the proportional solenoid error signal when determining the disconnection in the proportional solenoid disconnection determination step 306 and the proportional solenoid determination step 306 ( 307 is made up of a proportional solenoid error signal output step 500 for fault diagnosis.
상기와 같이 이루어지는 본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention made as described above are as follows.
먼저 자동차에 시동을 걸게되면 이그니션스위치(ING-S)가 온 되면서, 엔진이 회전함과 아울러, 전자제어장치(1)에 전압이 공급하게 되고 주행이 시작되면 전자제어장치(1)에서는 차속입력단계(400)의 엔진회전수 감지단계(300)로 가서 엔진센서(ENG-S)로 부터 엔진의 회전수를 감지하게 되고, 이어서 전자제어장치(1)에서는 차속계산단계(301)로 가서 차속센서(SP-S)로 부터 차속을 감지하여 차속을 계산하게 되면 상기 전자제어장치(1)는 비례솔레노이드 제어단계(302)로 가서 상기 계산된 차속에 따른 제어신호를 보내 비례솔레노이드(SOL)의 전류를 제어하게 된다.First, when the vehicle is started, the ignition switch (ING-S) turns on, the engine rotates, and the voltage is supplied to the electronic controller 1, and when the driving starts, the electronic controller 1 inputs the vehicle speed. Go to the engine speed detection step 300 of step 400 to detect the engine speed from the engine sensor (ENG-S), then the electronic control device 1 goes to the vehicle speed calculation step 301 to the vehicle speed When the vehicle speed is detected by the sensor SP-S and the vehicle speed is calculated, the electronic controller 1 goes to the proportional solenoid control step 302 and sends a control signal according to the calculated vehicle speed of the proportional solenoid SOL. To control the current.
이와 같이 비례솔레노이드(SOL)의 전류를 제어한 상태에서, 전자제어장치(1)에서는 트로틀밸브 개도감지센서 입력단계(303)로가서, 상기 차속센서(SP-S)로부터 트로틀밸브 개도감지센서(TPS)로서 단선여부에 대한 센서신호가 입력되었는가를 판단하게되고, 전자제어장치(1)에서는 차속센서 고장진단용 신호출력단계(450)의 단선신호 입력판단단계(304)로 가서 상기 트로틀밸브 개도감지센서(TPS)가 일정값 이상이 될때, 일정시간 이상동안 차속신호의 유무를 판단하여, 이때 일정시간동안 차속이 있으면 상기 엔진 회전수 입력단계(300)로 부터 반복 수행하고, 상기 단선신호입력판단단계(304)에서 트로틀밸브 개도감지센서(TPS)가 일정값이상 일정시간동안 차속이 없으면, 전자제어장치(1)에서는 고장진단출력단호단자(S)로 차속센서(SP-S)의 단선이라고 고장진단용 에러신호를 출력시키고, 상기 전자제어장치(1)에서는 비례솔레노이드 고장진단용 신호출력단계(500)의 비례솔레노이드 단선판단단계(306)로 가서, 솔레노이드제어 피드백 전압으로 비례솔레노이드(SOL)의 단선여부를 판단하고, 이때 솔레노이드 제어 피드백 전압이 정상적이면, 비례솔레노이드(SOL)는 정상으로 판단, 상기 엔진회전수 입력단계(300)로부터 반복 수행하며, 상기 솔레노이드제어 피드백전압이 제어된 전압보다 기준치이상으로 낮아지면 전자제어장치(1)에서는 비례솔레노이드(SOL)가 단선으로 판단하여 전자제어장치(1)의 고장진단에러 출력신호단자(S)로 비례솔레노이드(SOL)의 단선에 따른 고장진단 에러신호를 출력시키게 된다.As described above, in the state in which the current of the proportional solenoid SOL is controlled, the electronic control apparatus 1 goes to the throttle valve opening degree sensor input step 303, and the throttle valve opening degree sensor (from the vehicle speed sensor SP-S) It is determined whether the sensor signal for disconnection is input as TPS), and the electronic control apparatus 1 goes to the disconnection signal input determination step 304 of the vehicle speed sensor fault diagnosis signal output step 450 to detect the throttle valve opening degree. When the sensor TPS is equal to or greater than a predetermined value, it is determined whether the vehicle speed signal is present for a predetermined time or more, and if there is a vehicle speed for a predetermined time, it is repeatedly performed from the engine speed input step 300, and the disconnection signal input determination is made. In step 304, if the throttle valve opening detection sensor TPS does not have a vehicle speed for a predetermined time or more for a predetermined value, the electronic control device 1 indicates that the fault diagnosis output signal terminal S is disconnection of the vehicle speed sensor SP-S. For troubleshooting An error signal is output, and the electronic control apparatus 1 goes to the proportional solenoid disconnection determination step 306 of the proportional solenoid failure diagnosis signal output step 500 and determines whether the proportional solenoid SOL is disconnected by the solenoid control feedback voltage. In this case, if the solenoid control feedback voltage is normal, the proportional solenoid SOL is determined to be normal, and is repeatedly executed from the engine speed input step 300, and the solenoid control feedback voltage is lower than the control voltage. The ground electronic control device 1 determines that the proportional solenoid SOL is disconnected and outputs a fault diagnosis error signal according to the disconnection of the proportional solenoid SOL to the fault diagnosis error output signal terminal S of the electronic control device 1. Let's go.
이상에서 설명한 바와 같이 본 발명은 엔진회전수가 소정의 회전수 이상으로 입력될때만 작동하여 비례솔레노이드를 작동시켜 주게되므로, 이그니션스위치가 온된 상태에서 엔진 미시동에서는 전류소모를 없애줄 수 있고, 차속센서의 단선여부판단은 트로틀 밸브 개도 감지센서를 이용하여 트로틀밸브 개도감지값이 소정값 이상이 될때 소정시간 이상 차속이 없으면 차속 센서의 단선이라 판단하여 비례솔레노이드의 전류를 중간값으로 하여 조향력의 급격한 변화를 줄여 제어토록 하여 급격한 조향력 변화로 인가하여 야기될 수 있는 사고를 방지해 줄 수 있으며, 또한 솔레노이드 제어 전압값을 피드백으로 감지하여 제어전압값보다 피드백전압 값이 규정치 이상으로 것을 방지함으로써, 불안정한 비례솔레노이드 작동으로 오동작이 발생되는 문제점을 해소할 수 있는 효과를 제공하게 되는 것이다.As described above, the present invention operates only when the engine rotational speed is input above a predetermined rotational speed to operate the proportional solenoid, thereby eliminating current consumption when the engine is not started with the ignition switch turned on. In case of disconnection determination, when the throttle valve opening detection value is over the predetermined value by using the throttle valve opening detection sensor, if there is no vehicle speed for more than the predetermined time, it is determined that the vehicle speed sensor is disconnected and the current of the proportional solenoid is set as an intermediate value. It can be controlled to reduce the accident, which can be caused by sudden change in steering force. Also, it detects the solenoid control voltage value as feedback and prevents the feedback voltage value from the control voltage value by more than the prescribed value, thereby making it unstable proportional solenoid Malfunctions Caused by Operation It will provide an effect that can solve the point.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920011927A KR940011847B1 (en) | 1992-07-04 | 1992-07-04 | Method of steering control of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920011927A KR940011847B1 (en) | 1992-07-04 | 1992-07-04 | Method of steering control of vehicle |
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| Publication Number | Publication Date |
|---|---|
| KR940002123A KR940002123A (en) | 1994-02-16 |
| KR940011847B1 true KR940011847B1 (en) | 1994-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920011927A KR940011847B1 (en) | 1992-07-04 | 1992-07-04 | Method of steering control of vehicle |
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| Country | Link |
|---|---|
| KR (1) | KR940011847B1 (en) |
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1992
- 1992-07-04 KR KR1019920011927A patent/KR940011847B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR940002123A (en) | 1994-02-16 |
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