KR100351410B1 - Steering system for vehicle - Google Patents

Steering system for vehicle Download PDF

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Publication number
KR100351410B1
KR100351410B1 KR1019970074076A KR19970074076A KR100351410B1 KR 100351410 B1 KR100351410 B1 KR 100351410B1 KR 1019970074076 A KR1019970074076 A KR 1019970074076A KR 19970074076 A KR19970074076 A KR 19970074076A KR 100351410 B1 KR100351410 B1 KR 100351410B1
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South Korea
Prior art keywords
steering
vehicle
servo motor
sensors
comparator
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KR1019970074076A
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Korean (ko)
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KR19990054271A (en
Inventor
안수경
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주식회사 만도
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Priority to KR1019970074076A priority Critical patent/KR100351410B1/en
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Publication of KR100351410B1 publication Critical patent/KR100351410B1/en

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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
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
    • 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
    • B62D5/0421—Electric motor acting on or near steering gear

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

PURPOSE: A steering system for a vehicle is provided to control the steering position of a servo motor, and to adjust the forward direction of the vehicle by installing steering angle sensors in a steering wheel and the servo motor and comparing values from sensors. CONSTITUTION: A pinion(3) is installed in a servo motor(2), and a rack(5) is mounted in a steering shaft(4). The rack is operated by the pinion in turning a steering wheel(1), and the direction of a vehicle is changed. A steering angle sensor(6) is installed in the steering wheel, and a rotational angle sensor(7) is installed in the servo motor. Sensors are connected to a comparator of an electronic control unit(8), and the comparator is connected to a drive value deciding unit and a moving value command unit. A drive is connected to the servo motor. The steering position of the servo motor is controlled by comparing values from the sensors.

Description

차량용 조향시스템Vehicle steering system

본 발명은 차량의 운행도중 방향을 전환하기 위한 조향장치에 있어서, 상기 조향장치의 핸들과 서보모터에 각각의 조향각센서를 설치하고 이 센서들의 값을 주기적으로 비교하여 상기 서보모터의 조향위치를 제어하며 이 조향위치의 제어로써 차량의 진행방향을 조향할 수 있도록 한 차량용 조향시스템에 관한 것이다.The present invention provides a steering apparatus for switching a direction during a vehicle driving, wherein steering angle sensors are installed on a steering wheel and a servomotor of the steering apparatus, and the values of these sensors are periodically compared to control the steering position of the servomotor. The present invention relates to a vehicle steering system capable of steering a vehicle's traveling direction by controlling the steering position.

일반적으로 차량의 운전석에는 조향핸들을 설치하고 이의 회동축에는 조향축이 연결설치 되도록하며 이 조향축의 작동에 따라 차량의 전륜이 회동하면서 차량의 진행방향을 전환시키도록 하는 조향장치를 설치하고 있으며 이 조향장치의 작동은 운전자가 용이하게 작동시킬 수 있도록 구성되어 있다.In general, steering wheels are installed in the driver's seat of the vehicle, and steering shafts are connected to the rotating shaft of the vehicle, and steering devices are installed to change the driving direction of the vehicle while the front wheels of the vehicle rotate according to the operation of the steering shaft. The steering system is configured to be easily operated by the driver.

한편, 상기와 같이 작용되는 종래의 조향장치는 도 1에서와 같이 조향핸들(1)의 중앙부에 회동축(201)을 설치하고 이의 단부에는 피니언(3)을 설치하여 조향축(4)에 설치된 랙크(5)를 동작시키도록 구성되어 있었으며 상기 회동축에는 유압실린더(202)와 로터리밸브(203)를 설치하여 구성되어 있었다.On the other hand, the conventional steering device acting as described above is installed on the steering shaft (4) by installing a pivot shaft 201 in the center of the steering wheel (1) and the pinion (3) at its end as shown in FIG. The rack 5 was configured to operate, and the hydraulic shaft 202 and the rotary valve 203 were provided on the rotating shaft.

그러나, 상기와 같은 종래의 것은 상기 조향핸들(1)을 조작함에 따라 회동하는 회동축(201)이 피니언(3)을 회동시키고 이 피니언은 상기 유압실린더와 로터리밸브에 의하여 작동하면서 조향축(4)을 작동시켜 전륜의 방향을 조향하도록 구성되어 있었기 때문에 상기 조향핸들의 반력감은 항상 일정한 상태로 고정되도록 되어 있었으며 이에 따라 차량의 속도에 따라 조향감각을 운전자가 손수 조정해야 하는 어려움이 있게 되고 상기 조향을 위한 구조가 복잡하게 되는 등의 문제점이 있었다.However, in the related art as described above, the rotating shaft 201 that rotates as the steering wheel 1 is operated rotates the pinion 3, and the pinion is operated by the hydraulic cylinder and the rotary valve. Because the steering wheel was configured to steer the direction of the front wheel, the reaction force of the steering wheel was always fixed in a constant state, and thus, the driver had to manually adjust the steering sensation according to the speed of the vehicle. There was a problem such as a complicated structure for.

본 발명은 상기와 같은 종래의 제반 문제점을 감안하여 안출한 것으로 차량의 조향장치를 구성함에 있어서, 조향핸들과 서보모터에 각각의 조향각센서를 설치하고 이들을 전자제어장치의 콘트롤수단에 연결설치하며 상기 각 센서들의 각도에 따라 상기 전자제어장치가 서보모터를 동작시켜 차량의 진행방향에 따른 조향을 원활하게 제어할 수 있도록 한 차량용 조향시스템을 제공하려는 것인바, 이를 이하에서 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.The present invention has been made in view of the above-mentioned problems in the related art, and in constructing a steering device of a vehicle, each steering angle sensor is installed on a steering wheel and a servo motor, and these are connected to the control means of the electronic control device. The electronic controller operates the servomotor according to the angle of each sensor to provide a vehicle steering system that can smoothly control steering according to the traveling direction of the vehicle, which will be described in detail with reference to the accompanying drawings below. The explanation is as follows.

도 1은 종래 발명의 구조를 나타내는 설치상태도1 is an installation state diagram showing the structure of the conventional invention

도 2는 본 발명의 설치상태를 나타내는 구조도2 is a structural diagram showing an installation state of the present invention

도 3은 본 발명의 작동상태를 설명하는 흐름도3 is a flow chart illustrating the operational state of the present invention.

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

1 : 조향핸들 2 : 서보모터1: steering wheel 2: servo motor

3 : 피니언 4 : 조향축3: pinion 4: steering shaft

5 : 랙크 6 : 조향각센서5: rack 6: steering angle sensor

7 : 회전각셍서 8 : 전자제어장치7: rotation angle indicator 8: electronic control device

9 : 비교기 10 : 드라이브값 결정수단9: comparator 10: drive value determining means

11 : 이동값 지시수단 12 : 드라이브11: moving value indicating means 12: drive

조향핸들(1)의 회동에 따라 서보모터(2)에 설치된 피니언(3)이 조향축(4)에 설치된 랙크(5)를 동작시켜 차량의 방향을 전환하도록 하는 조향시스템에 있어서, 상기 조향핸들(1)에 조향각센서(6)를 설치하고 상기 서보모터(2)에는 회전각센서(7)를 설치하며 상기 각 센서(6)(7)들은 전자제어장치(8)의 비교기(9)에 연결설치 하고 상기 비교기(9)에는 드라이브값을 결정하는 결정수단(10)과 이동값 지시수단(11)을 연결하고 이에 드라이브(12)를 연결하며 이 드라이브(12)는 상기 서보모터(2)와 연결되도록 구성된 것이다.In the steering system in which the pinion (3) installed on the servomotor (2) operates the rack (5) installed on the steering shaft (4) in accordance with the rotation of the steering wheel (1) to change the direction of the vehicle. A steering angle sensor 6 is installed in (1), a rotation angle sensor 7 is installed in the servomotor 2, and each of the sensors 6, 7 is connected to a comparator 9 of the electronic control device 8. The comparator 9 connects the determining means 10 and the moving value indicating means 11 to determine the drive value, and connects the drive 12 to the comparator 9. The drive 12 is connected to the servo motor 2. It is configured to connect with.

이상과 같이 구성된 본 발명은 상기 도 2 및 도 3에서와 같이 상기 조향핸들(1)을 회전시키게 되면, 이의 조향각이 조향각센서(6)에 의하여 전자제어장치(8)의 비교기(9)에 인가되고 이 비교기(9)에는 서보모터(2)의 회전각센서(7)의 각도가 동시에 입력되어 이들 값을 비교한후 비교신호를 드라이브값 결정수단(10)으로 인가하게 된다.In the present invention configured as described above, when the steering wheel 1 is rotated as shown in FIGS. 2 and 3, the steering angle thereof is applied to the comparator 9 of the electronic controller 8 by the steering angle sensor 6. The angle of the rotation angle sensor 7 of the servomotor 2 is simultaneously input to the comparator 9 to compare these values, and then apply a comparison signal to the drive value determining means 10.

이 드라이브값 결정수단(10)에서 이동값이 결정되면, 이를 좌우의 이동값을 지시하는 지시수단(11)과 드라이브(12)로 인가하게 되며 이 드라이브(12)가 상기 서보모터(2)를 결정값만큼 회전시키게 되고 이의 회전에 따라 상기 피니언(3)이 조향축(4)의 랙크(5)를 작동시켜 차량의 방향이 전환 되는 것이다.When the movement value is determined by the drive value determining means 10, it is applied to the instructing means 11 and the drive 12 indicative of the left and right movement values, and the drive 12 supplies the servomotor 2 to the drive means. The pinion 3 rotates by a determined value and the pinion 3 operates the rack 5 of the steering shaft 4 to change the direction of the vehicle.

이상과 같은 본 발명은 상기와 같이 차량의 진행방향을 전환하는 조향장치와 서보모터에 각각의 센서를 설치하고 이들 센서로부터 얻어진 각의 값을 비교한 후 조향각을 결정하면서 차량의 조향이 이루어지도록 한 것으로 상기 조향상태가 정확하게 이루어지게 되고 또, 상기 조향각의 안정을 도모할 수 있게 되며 상기와 같은 시스템에 따라 종래와 같은 회동축이나 유압실린더 등의 구조물이 필요없게 되어 조향시스템의 구성을 간단하게 할 수 있게 되고 상기 간단한 구성으로 인하여 차량의 운전석 공간을 넓게 할 수 있으며 차량의 추돌사고시 상기 회동축에 의한 부상을 방지할 수 있어 안전한 차량의 운전을 도모할 수 있고 설치 및 조립작업이 용이하게 되는 점 등의 특징을 지닌 것이다.The present invention as described above is to install the steering device and the servo motor to switch the traveling direction of the vehicle as described above, and compare the values of the angles obtained from these sensors to determine the steering angle, so that the steering of the vehicle is made. The steering state can be made accurately, and the steering angle can be stabilized, and according to the system as described above, a structure such as a rotating shaft or a hydraulic cylinder is not required as in the prior art, thereby simplifying the configuration of the steering system. It is possible to increase the driver's seat space of the vehicle due to the simple configuration and to prevent injuries caused by the rotational shaft in the event of a collision of the vehicle, thereby enabling safe driving of the vehicle and facilitating installation and assembly work. It has such characteristics.

Claims (1)

조향핸들(1)의 회동에 따라 서보모터(2)에 설치된 피니언(3)이 조향축(4)에 설치된 랙크(5)를 동작시켜 차량의 방향을 전환하도록 하는 조향시스템에 있어서, 상기 조향핸들(1)에 조향각센서(6)를 설치하고 상기 서보모터(2)에는 회전각센서(7)를 설치하며 상기 각 센서(6)(7)들은 전자제어장치(8)의 비교기(9)에 연결설치 하고 상기 비교기(9)에는 드라이브값을 결정하는 결정수단(10)과 이동값 지시수단(11)을 연결하고 이에 드라이브(12)를 연결하며 이 드라이브(12)는 상기 서보모터(2)와 연결되도록 구성함을 특징으로 하는 차량용 조향시스템.In the steering system in which the pinion (3) installed on the servomotor (2) operates the rack (5) installed on the steering shaft (4) in accordance with the rotation of the steering wheel (1) to change the direction of the vehicle. A steering angle sensor 6 is installed in (1), a rotation angle sensor 7 is installed in the servomotor 2, and each of the sensors 6, 7 is connected to a comparator 9 of the electronic control device 8. The comparator 9 connects the determining means 10 and the moving value indicating means 11 to determine the drive value, and connects the drive 12 to the comparator 9. The drive 12 is connected to the servo motor 2. Vehicle steering system, characterized in that configured to be connected with.
KR1019970074076A 1997-12-26 1997-12-26 Steering system for vehicle KR100351410B1 (en)

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Application Number Priority Date Filing Date Title
KR1019970074076A KR100351410B1 (en) 1997-12-26 1997-12-26 Steering system for vehicle

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Application Number Priority Date Filing Date Title
KR1019970074076A KR100351410B1 (en) 1997-12-26 1997-12-26 Steering system for vehicle

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KR19990054271A KR19990054271A (en) 1999-07-15
KR100351410B1 true KR100351410B1 (en) 2002-10-19

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100421423B1 (en) * 2001-02-10 2004-03-09 한국과학기술원 An Electric Steering Wheel Device Using A Semi Active Actuator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0285059A (en) * 1988-08-22 1990-03-26 Kayaba Ind Co Ltd Moter-driven power steering device
KR900004576A (en) * 1988-09-28 1990-04-12 시끼 모리야 Motor-driven power steering
JPH05213222A (en) * 1992-02-05 1993-08-24 Toyota Motor Corp Handle restoration control device for electric power steering device
JPH09207800A (en) * 1996-02-07 1997-08-12 Honda Motor Co Ltd Steering device for vehicle
KR19980032443A (en) * 1996-10-01 1998-07-25 세끼야데쯔오 Control device of electric power steering system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0285059A (en) * 1988-08-22 1990-03-26 Kayaba Ind Co Ltd Moter-driven power steering device
KR900004576A (en) * 1988-09-28 1990-04-12 시끼 모리야 Motor-driven power steering
JPH05213222A (en) * 1992-02-05 1993-08-24 Toyota Motor Corp Handle restoration control device for electric power steering device
JPH09207800A (en) * 1996-02-07 1997-08-12 Honda Motor Co Ltd Steering device for vehicle
KR19980032443A (en) * 1996-10-01 1998-07-25 세끼야데쯔오 Control device of electric power steering system

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