KR19990051779A - Damping characteristic control device of shock absorber of vehicle - Google Patents
Damping characteristic control device of shock absorber of vehicle Download PDFInfo
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- KR19990051779A KR19990051779A KR1019970071165A KR19970071165A KR19990051779A KR 19990051779 A KR19990051779 A KR 19990051779A KR 1019970071165 A KR1019970071165 A KR 1019970071165A KR 19970071165 A KR19970071165 A KR 19970071165A KR 19990051779 A KR19990051779 A KR 19990051779A
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- acceleration
- shock absorber
- control
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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
- B60G17/016—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
- B60G17/0164—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 mainly during accelerating or braking
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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
- B60G2400/10—Acceleration; Deceleration
-
- 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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- 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
- B60Y2400/304—Acceleration sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
본 발명은 차량의 쇽업소버의 댐핑특성조절장치에 관한 것으로, 차량의 쇽업소버에 구성된 밸브를 솔레노이드에 의해 모두 가변될 수 있도록하여 차량에 가해지는 가속도를 효율적으로 저감시키고 그로인해 승차감이 향상될 뿐 아니라 차량에 가해지는 반작용을 줄여주며 핸들링특성도 향상시킬 수 있는 것으로, 차량의 내부에 그 차량에 가해지는 가속도를 감지할 수 있도록 구성된 가속도감지부(14)를 포함하여 구성된 차량의 쇽업소버장치에 있어서, 상기 가속도감지부(14)에서 감지된 차량의 가속도에 따른 주파수에 대응하여 상기 쇽업소버장치의 내부에서 오일의 유입을 제어할 수 있도록 구동력을 발생하는 밸브구동수단(22,30)과, 상기 가속도감지부(14)에서 감지된 차량의 가속도에 따른 주파수에 대응된 상기 쇽업소버의 이득값이 저장되어 있는 데이터저장수단(32) 및, 상기 가속도감지부(14)에서 감지된 차량의 가속도에 따른 주파수를 연산하고 그에 해당하는 이득값을 상기 데이터저장수단(32)로부터 독취하여 연산함으로써 그 결과치를 바탕으로 상기 밸브구동수단(22,30)에 제어신호를 발생하는 제어수단(34)을 구비하여 구성된 것을 특징으로 한다.The present invention relates to a damping characteristic control device of a shock absorber of a vehicle, by allowing all the valves configured on the shock absorber of the vehicle to be changed by a solenoid, thereby effectively reducing the acceleration applied to the vehicle and thereby improving the riding comfort. In addition, it is possible to reduce the reaction applied to the vehicle and to improve the handling characteristics, and the shock absorber of the vehicle configured to include the acceleration sensing unit 14 configured to detect the acceleration applied to the vehicle. The valve driving means (22, 30) for generating a driving force to control the inflow of oil in the shock absorber device in response to the frequency according to the acceleration of the vehicle detected by the acceleration sensing unit 14, The gain value of the shock absorber corresponding to the frequency according to the acceleration of the vehicle detected by the acceleration detecting unit 14 is stored. Compute the frequency according to the acceleration of the vehicle sensed by the data storage means 32 and the acceleration detection unit 14, and calculates the gain value corresponding to it by reading from the data storage means 32 to calculate the frequency. The valve driving means (22, 30) is characterized in that it is provided with a control means for generating a control signal.
Description
본 발명은 차량의 쇽업소버의 댐핑특성조절장치에 관한 것으로, 보다 상세하게는 차량의 가속도신호를 감지하여 가속도를 감소시키는 방향으로 쇽업소버의 댐핑특성이 실시간으로 조절될 수 있도록 한 차량의 쇽업소버의 댐핑특성조절장치에 관한 것이다.The present invention relates to a damping characteristic control apparatus of a shock absorber of a vehicle, and more particularly, to a damper characteristic of a shock absorber of a vehicle so that the damping characteristic of the shock absorber can be adjusted in real time in a direction of reducing acceleration by sensing an acceleration signal of the vehicle. It relates to a damping characteristic control device of.
주지된 바와 같이, 자동차에 요구되는 성능을 분류하면 동력성능, 조정 안정성 및 브레이크 성능의 3가지가 있다. 자동차는 "안전하고 조정하기 쉬운" 것이 중요하다. 차선변경이나 선회 등 능동적으로 핸들 조작을 할 경우 조작의 편리성과 응답성(조정성:controlability) 및 직진주행과 정상선회 등 능동적인 핸들조작을 하지 않을 경우 주행하는 코스의 유지성과 외부의 충격에 대한 수습(안정성:stability)이 양립되지 않으면 안된다.As is well known, there are three categories of performance required for automobiles: power performance, steering stability and brake performance. It is important for the car to be "safe and easy to adjust." Actively handle steering such as changing lanes and turning, etc., the convenience and response of control (controlability), and the maintenance of the running course and the impact on the external impact when not actively handling steering such as straight driving and normal turning Applicability (stability) must be compatible.
한편, 도로를 주행할 때 발생되는 여러 가지 불쾌한 진동을 차단하고 보다 좋은 승차감이 확보되지 않으면 승객에게 있어 쾌적하다고는 말할 수 없다. 인간의 육체에 상하 방향으로 진동이 가해지면 인간의 자율신경 공진점이 5∼7Hz 부근에 있으므로 이 주위에서 가장 진동을 느끼기 쉽게 되어 있다. 또한, 전후.좌우 방향으로 진동이 가해지는 것은 더욱 낮은 주파수에서 느끼기 쉽다.On the other hand, it can not be said that it is comfortable for passengers unless it blocks various unpleasant vibrations generated when driving on the road and a better riding comfort is not secured. When vibration is applied to the human body in the up and down direction, the human autonomic resonance point is near 5 to 7 Hz, so it is most likely to feel the vibration around it. In addition, it is easy to feel the vibration applied to the front and rear and left and right at lower frequencies.
도로면의 요철에 대해서는 물론 황폐한 포장도로면에서의 승차감, 콘크리트 도로면이나 다리의 이음매를 지나칠 때의 충격(해시네스) 등으로부터의 완화가 필요하다. 이와같이, 자동차의 기본적인 운동은 바운스, 피치 등 상하방향, 요잉의 좌우방향, 다이브, 스쿼트 등 전후방향의 운동으로 나타난다. 이러한 각 방향의 운동 기능을 담당하고 있는 것이 서스펜션과 스티어링이며, 이것을 섀시장치라고 총칭된다.Regarding the unevenness of the road surface, it is necessary to alleviate the riding comfort on the deteriorated pavement surface and the impact (hashness) when passing the seam of the concrete road surface or the bridge. As described above, the basic motion of the vehicle is represented by the motion in the up and down direction such as bounce and pitch, the left and right direction of yawing, the forward and backward direction such as the dive and squat. Suspension and steering which are in charge of the movement functions in each of these directions are collectively referred to as a chassis device.
그리고, 최근에는 이 매커니컬 기구에 고성능센서와 액추에이터를 조합하여 전자제어화한 서스펜션 제어와 스티어링제어가 가능하게 되었고, 종래에 얻을 수 없었던 고도의 성능이 실현되어 가고 있다.In recent years, suspension control and steering control, which are electronically controlled by combining a high-performance sensor and an actuator with this mechanical mechanism, have been achieved, and a high performance that has not been achieved in the past has been realized.
그리고, 서로 반대되는 특성인 승차감과 자동차의 자세, 조종 안정성의 쌍방을 성립시킬 목적으로 전자 제어에 의한 쇽업소버의 감쇠력 제어가 고안되어 있다. 전자제어 쇽업소버 감쇠력제어기구는 각 자동차메이커에 따라 디바이스명이 다르지만 제어원리는 같다.The damping force control of the shock absorber by electronic control has been devised for the purpose of establishing both the riding comfort, the attitude of the vehicle, and the steering stability, which are opposite characteristics. The electronic control shock absorber damping force control mechanism has different device names for each automobile maker, but the control principle is the same.
즉, 쇽업소버내부의 오리피스를 통과하는 오일의 유량을 세밀하게 제어할 수 있는 전기구동의 밸브를 설치하여 수동 또는 도로면과 주행상태에 따라 자동적으로 변환하여 적절한 감쇠력을 얻는 것이다.In other words, by installing an electric drive valve capable of finely controlling the flow rate of the oil passing through the orifice in the shock absorber to automatically convert according to the manual or road surface and driving conditions to obtain an appropriate damping force.
도 1a는 종래 차량의 쇽업소버의 댐핑특성조절기의 설치상태를 나타내는 도면이고, 도 1b와 c는 종래 차량의 쇽업소버의 댐핑특성조절기에 채용되는 솔레노이드밸브에 따른 댐핑특성을 나타내는 도면으로, 스프링(8)의 전부하에 의해 메인밸브(6)은 전/후에 소정의 힘을 인가받아 닫혀있게 되는 데, 차량의 가속도감지센서의 감지신호에 의해 적절한 댐핑특성이 채택되고 그에 따라 도 1b에 도시된 바와 같이, MAX와 MIN사이의 댐핑가변범위내에서 댐핑특성이 조절되게 된다.Figure 1a is a view showing the installation state of the damping characteristic regulator of the shock absorber of the conventional vehicle, Figures 1b and c is a view showing the damping characteristics according to the solenoid valve employed in the damping characteristic regulator of the shock absorber of the conventional vehicle, spring ( 8) The main valve 6 is closed by applying a predetermined force before and after the full load, and an appropriate damping characteristic is adopted by the detection signal of the acceleration sensor of the vehicle, and as shown in FIG. Likewise, the damping characteristic is adjusted within the damping variable range between MAX and MIN.
이때, 상기 메인밸브(6)의 조절은 솔레노이드가 구성되어 가변될 수 있도록 된 제 2솔레노이드밸브(12)에 의해 조절되고, 밸브(10)은 솔레노이드가 구성되어 있지 않는 고정밸브로 유압의 조절이 불가능한 밸브로 구성된다.At this time, the control of the main valve 6 is controlled by the second solenoid valve 12 so that the solenoid is configured and variable, the valve 10 is a fixed valve that is not composed of the solenoid control of the hydraulic pressure It consists of an impossible valve.
그러나, 상기 종래 차량의 쇽업소버의 댐핑특성조절기에 따르면, 차량의 승차감의 향상을 위해서는 도 1b에 도시된 MIN곡선이 낮아져야 하는 데 이와같이 실시하면 도 1c에서와 같이, 제 1밸브(10)가 가변밸브가 아닌 고정밸브이므로 노면에서 발생되는 주파수에 따라 제어될 수 없어 MAX곡선도 낮아지는 결과가 발생된다. 하지만 상기 MAX곡선이 낮아지게 되면 저주파수의(1 Hz부근)신호가 인가되었을 때 충분한 승차감의 향상을 기대하기 어렵다는 문제점이 발생된다.However, according to the damping characteristic regulator of the shock absorber of the conventional vehicle, the MIN curve shown in FIG. 1B should be lowered to improve the riding comfort of the vehicle. In this way, as shown in FIG. 1C, the first valve 10 is Since it is a fixed valve rather than a variable valve, it cannot be controlled according to the frequency generated on the road surface, resulting in a lower MAX curve. However, when the MAX curve is lowered, it is difficult to expect a sufficient ride comfort improvement when a low frequency (near 1 Hz) signal is applied.
이에, 본 발명은 상기한 사정을 감안하여 이루어진 것으로, 차량의 가속도신호에 대한 주파수를 감지하여 가속도를 감소시킬 수 있도록 쇽업소버의 댐핑특성이 실시간으로 조절될 수 있도록 하는 차량의 쇽업소버의 댐핑특성조절장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above-described circumstances, and the damping characteristic of the shock absorber of the vehicle which enables the damping characteristic of the shock absorber to be adjusted in real time to reduce the acceleration by sensing the frequency of the acceleration signal of the vehicle. The purpose is to provide an adjusting device.
상기한 목적을 실행하기 위한 본 발명의 일실시예를 따르면, 차량의 내부에 그 차량에 가해지는 가속도를 감지할 수 있도록 구성된 가속도감지부를 포함하여 구성된 차량의 쇽업소버장치에 있어서, 상기 가속도감지부에서 감지된 차량의 가속도에 따른 주파수에 대응하여 상기 쇽업소버장치의 내부에서 오일의 유입을 제어할 수 있도록 구동력을 발생하는 밸브구동수단과, 상기 가속도감지부에서 감지된 차량의 가속도에 따른 주파수에 대응된 상기 쇽업소버의 이득값이 저장되어 있는 데이터저장수단 및, 상기 가속도감지부에서 감지된 차량의 가속도에 따른 주파수를 연산하고 그에 해당하는 이득값을 상기 데이터저장수단로부터 독취하여 연산함으로써 그 결과치를 바탕으로 상기 밸브구동수단에 제어신호를 발생하는 제어수단을 구비하여 구성된 것을 특징으로 하는 차량의 쇽업소버의 댐핑특성조절장치를 제공한다.According to an embodiment of the present invention for carrying out the above object, in the shock absorber device of the vehicle configured to detect the acceleration applied to the vehicle in the interior of the vehicle, the acceleration sensing unit Valve driving means for generating a driving force to control the inflow of oil in the shock absorber device in response to the frequency according to the acceleration of the vehicle detected in the and the frequency according to the acceleration of the vehicle detected by the acceleration sensing unit A data storage means storing a corresponding gain value of the shock absorber and a frequency according to the acceleration of the vehicle sensed by the acceleration sensing unit, and calculating a gain value corresponding to the absorbed value from the data storage means. Based on the control means for generating a control signal to the valve driving means Provides a damping characteristic of the shock absorber of the vehicle control device, it characterized in that.
상기한 구성으로 된 본 발명에 의하면, 차량의 쇽업소버에 구성된 밸브를 솔레노이드에 의해 모두 가변될 수 있도록하여 차량에 가해지는 가속도를 저감시키고 그로인해 차량에 가해지는 반작용을 줄여주이도록 한다.According to the present invention having the above-described configuration, all the valves configured on the shock absorber of the vehicle can be varied by the solenoid to reduce the acceleration applied to the vehicle and thereby reduce the reaction applied to the vehicle.
도 1a는 종래의 차량의 쇽업소버의 댐핑특성조절기의 설치상태를 나타내는 도면,1A is a view showing an installation state of a damping characteristic regulator of a shock absorber of a conventional vehicle;
도 1b와 c는 종래의 차량의 쇽업소버의 댐핑특성조절기에 채용되는 솔레노이드밸브에 따른 댐핑특성을 나타내는 도면,Figure 1b and c is a view showing the damping characteristics according to the solenoid valve employed in the damping characteristics regulator of the shock absorber of the conventional vehicle,
도 2는 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치의 설치상태를 나타내는 도면,2 is a view showing an installation state of a damping characteristic control apparatus of a shock absorber of a vehicle according to an embodiment of the present invention;
도 3은 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치의 구성을 나타내는 블럭구성도,3 is a block diagram showing the configuration of a damping characteristic control apparatus for a shock absorber of a vehicle according to an embodiment of the present invention;
도 4a는 차량의 가속도신호와 그에 따르는 순간주파수와 그 주파수에 대응한 이득값을 나타내는 도면,4A is a diagram illustrating an acceleration signal of a vehicle, an instantaneous frequency corresponding thereto, and a gain value corresponding to the frequency;
도 4b와 c는 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치에서 솔레노이드밸브의 제어에 따른 댐핑특성의 변화를 도시한 도면이다.Figure 4b and c is a view showing a change in the damping characteristics according to the control of the solenoid valve in the damping characteristic control device of the shock absorber of the vehicle according to an embodiment of the present invention.
*도면의 주요 부분에 대한 부호의 설정** Setting of symbols for the main parts of drawings
2:체크밸브, 4:어큐뮬레이터,2: check valve, 4: accumulator,
6:메인밸브, 8:스프링,6: main valve, 8: spring,
10:고정밸브, 11:제 1솔레노이드밸브,10: fixed valve, 11: first solenoid valve,
12:제 2솔레노이드밸브, 14:가속도감지부,12: second solenoid valve, 14: acceleration detection unit,
16,18,20:제 1스위칭부, 22:제 1솔레노이드밸브구동부,16, 18, 20: the first switching unit, 22: the first solenoid valve driving unit,
24,26,28:제 2스위칭부, 30:제 2솔레노이드밸브구동부,24, 26, 28: 2nd switching part, 30: 2nd solenoid valve driving part,
32:데이터저장부, 34:제어부.32: data storage, 34: control.
이하, 첨부되어진 도면을 참조하여 본 발명의 구성을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.
먼저, 도 2는 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치의 설치상태를 나타내는 도면으로, 상기한 종래의 차량 쇽업소버의 댐핑특성조절기의 설치상태와 거의 유사하지만 솔레노이드의 제어에 의해 댐핑특성이 조절될 수 있도록 한 제 1솔레노이드밸브(11)를 추가적으로 구성하여 노면에서 발생되는 주파수에 따라 신축적으로 쇽업소버의 댐핑특성이 조절될 수 있게 구성한다.First, FIG. 2 is a view illustrating an installation state of a damping characteristic adjusting device of a shock absorber of a vehicle according to an embodiment of the present invention, which is almost similar to the installation state of the damping characteristic adjusting device of the conventional vehicle shock absorber. The first solenoid valve 11 is further configured to control the damping characteristics by the control so that the damping characteristics of the shock absorber can be flexibly adjusted according to the frequency generated on the road surface.
도 3은 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치의 구성을 나타내는 블럭구성도이며, 도 4a는 차량의 가속도신호와 그에 따르는 순간주파수와 그 주파수에 대응한 이득값을 나타내는 도면으로 노면에서 발생되는 주파수와 그에 대응하는 쇽업소버의 댐핑특성조절장치의 이득값을 나타내며, 도 4b와 c는 본 발명의 일실시예를 따른 차량의 쇽업소버의 댐핑특성조절장치에서 솔레노이드밸브의 제어에 따른 댐핑특성의 변화를 도시한 도면이다.Figure 3 is a block diagram showing the configuration of the damping characteristics control device of the shock absorber of the vehicle according to an embodiment of the present invention, Figure 4a is an acceleration signal of the vehicle, the instantaneous frequency and the gain value corresponding to the frequency Fig. 4B and C show solenoid valves in a damping characteristic control device for a shock absorber of a vehicle according to an embodiment of the present invention. A diagram illustrating a change in damping characteristics according to the control of.
여기서, 도 4b는 저주파가 많은 험한 도로의 한계댐핑특성의 조절 예를 나타내며, 도 4c는 고주파(3∼8Hz)가 많은 평탄한 도로에서 승차감을 향상시키기 위한 도로의 한계 댐핑특성의 조절의 예를 나타낸 도면이다.Here, FIG. 4B shows an example of adjusting the limit damping characteristic of a rough road with a lot of low frequencies, and FIG. 4C shows an example of adjusting the limit damping characteristic of a road for improving ride comfort on flat roads with a high frequency (3 to 8 Hz). Drawing.
도 3에서, 참조부호 14는 차량 섀시의 소정부에 구성되어 차량의 가속도를 감지하는 가속도감지부를 나타낸다.In FIG. 3, reference numeral 14 denotes an acceleration sensor configured to detect an acceleration of the vehicle, which is configured at a predetermined portion of the vehicle chassis.
또한, 참조부호 16,18,20은 후술하는 제어부(34)의 제어신호를 인가받아 차량의 쇽업소버에 상기 가속도감지부(14)의 가속도에 해당하는 주파수의 인가에 따라 쇽업소버의 상기 메인밸브(6)가 구동될 수 있도록 후술하는 제 1솔레노이드밸브(11)를 구동시키기 위한 스위칭동작을 수행하는 제 1스위칭부를 나타낸다.Further, reference numerals 16, 18, and 20 are applied to the control signal of the control unit 34 to be described later, the main valve of the shock absorber according to the application of the frequency corresponding to the acceleration of the acceleration sensing unit 14 to the shock absorber of the vehicle. A first switching unit which performs a switching operation for driving the first solenoid valve 11 described later so that 6 can be driven.
또, 참조부호 22은 후술하는 제어부(34)의 제어신호를 인가받아 차량의 쇽업소버에 상기 가속도감지부(14)의 가속도에 해당하는 주파수의 인가에 따라 쇽업소버의 상기 메인밸브(6)가 구동될 수 있도록 제 1솔레노이드밸브(11)에 구동력을 발생하는 제 1솔레노이드구동부를 나타낸다.Further, reference numeral 22 denotes that the main valve 6 of the shock absorber is applied in response to the control signal of the controller 34 to be described later applied to the shock absorber of the vehicle in response to the application of the frequency corresponding to the acceleration of the acceleration sensing unit 14. A first solenoid driving part for generating a driving force to the first solenoid valve 11 to be driven is shown.
그리고, 참조부호 24,26,28은 상기 제 1스위칭부(16,18,20)와 같이 후술하는 제어부(34)로부터 소정의 제어신호를 인가받아 그 후단으로 차량의 배터리전원을 인가하기 위한 제 2스위칭부를 나타낸다.In addition, reference numerals 24, 26, and 28 are used to apply a predetermined control signal from the controller 34 to be described later, such as the first switching units 16, 18, and 20, to apply battery power of the vehicle to the subsequent stage. 2 shows a switching part.
또, 참조부호 30은 후술하는 제어부(34)의 제어신호를 인가받아 차량의 쇽업소버에 상기 가속도감지부(14)의 가속도에 해당하는 주파수의 인가에 따라 쇽업소버의 상기 메인밸브(6)가 구동될 수 있도록 제 2솔레노이드밸브(12)에 구동력을 발생하는 제 2솔레노이드구동부를 나타낸다.Further, reference numeral 30 denotes that the main valve 6 of the shock absorber is applied in response to the control signal of the control unit 34 to be described later applied to the shock absorber of the vehicle according to the application of the frequency corresponding to the acceleration of the acceleration sensing unit 14. A second solenoid driving unit for generating a driving force to the second solenoid valve 12 to be driven is shown.
또한, 참조부호 32는 상기 제 1솔레노이드와 제 2솔레노이드를 제어할 수 있도록 상기 가속도감지부(14)에서 감지된 노면에 대한 차량의 가속도에 의해 연산된 순간주파수와 그 주파수에 대응한 이득값을 도 4b와 도 4c와 같이 쇽업소버의 댐핑조절이 가능하도록 그 주파수에 대응하여 데이터로 저장되어 있는 데이터저장부를 나타낸다.Also, reference numeral 32 denotes an instantaneous frequency calculated by the acceleration of the vehicle with respect to the road surface detected by the acceleration detecting unit 14 and a gain value corresponding to the frequency so as to control the first solenoid and the second solenoid. 4b and 4c show a data storage unit which is stored as data corresponding to the frequency to enable damping adjustment of the shock absorber.
그리고, 참조부호 34는 상기 가속도감지부(14)에서 감지된 노면에 대한 차량의 가속도를 인가받아 그에 해당하는 순간주파수를 연산하고 상기 데이터저장부(32)로부터 쇽업소버의 댐핑조절이 가능하도록 상기 제 1과 2솔레노이드밸브(11,12)의 조절치에 대한 데이터를 독취하여 상기 제 1,2솔레노이드밸브구동부(22,30)에 제어신호를 발생하는 제어부를 나타낸다.In addition, reference numeral 34 is applied to the acceleration of the vehicle on the road surface detected by the acceleration detection unit 14 to calculate the instantaneous frequency corresponding to the damping control of the shock absorber from the data storage unit 32 is possible. The control unit reads data on adjustment values of the first and second solenoid valves 11 and 12 and generates control signals to the first and second solenoid valve driving units 22 and 30.
이하, 상기한 구성의 본 발명에 따른 차량의 쇽업소버의 댐핑특성조절장치의 작용에 대하여 상세하게 설명한다.Hereinafter, the operation of the damping characteristic control device of the shock absorber of the vehicle according to the present invention having the above-described configuration will be described in detail.
먼저, 상기 가속도감지부(14)에서 감지된 차량의 가속도를 인가받아 상기 제어부(34)는 그 가속도신호를 그에 해당하는 순간주파수로 연산하고 그 주파수에 해당하는 이득값을 상기 데이터저장부(32)에서 독취하여 노면에 대한 차량의 주파수와 그 때의 이득값을 곱셈연산한다.First, by receiving the acceleration of the vehicle sensed by the acceleration detecting unit 14, the control unit 34 calculates the acceleration signal as an instantaneous frequency corresponding thereto and calculates a gain value corresponding to the frequency. ) Is multiplied by the frequency of the vehicle with respect to the road surface and the gain value at that time.
그 후, 상기 제어부(34)에서 연산된 연산값을 바탕으로 상기 제어부(34)는 상기 제 1스위칭부(16,18,20)와 제 2스위칭부(24,26,28)의 릴레이스위치(20,28)을 스위치온(ON)시켜 상기 제 1솔레노이드밸브구동부(22)와 상기 제 2솔레노이드밸브구동부(30)에 제어신호를 인가하여 상기 제 1,2솔레노이드밸브(11,12)가 구동되어 노면상에서 발생되는 주파수에 따라 쇽업소버의 댐핑특성이 조절될 수 있도록 한다.Subsequently, the control unit 34 controls the relay switches of the first switching units 16, 18, 20 and the second switching units 24, 26, 28 based on the operation value calculated by the control unit 34. 20 and 28 are switched on to apply control signals to the first solenoid valve driver 22 and the second solenoid valve driver 30 to drive the first and second solenoid valves 11 and 12. The damping characteristics of the shock absorber can be adjusted according to the frequency generated on the road surface.
이때, 상기 가속도감지부(14)에서 감지된 가속도를 상기 제어부(34)에서 순간주파수로 연산한 값이 저주파가 많은 험한도로의 주파수가 발생되면 상기 제어부(34)는 그에 해당하는 이득값을 상기 데이터저장부(32)로부터 독취하여 곱셈 연산하여 도 4b에 도시된 바와 같이, MAX곡선이 상향조정될 수 있도록 상기 제 1,2솔레노이드밸브(11,12)를 제어한다.At this time, when the frequency detected by the acceleration sensor 14 as the instantaneous frequency of the acceleration detected by the controller 34 is generated in the frequency of the rough road with a lot of low frequencies, the controller 34 displays the corresponding gain value. As shown in FIG. 4B, the first and second solenoid valves 11 and 12 are controlled so that the MAX curve can be adjusted by reading and multiplying the data from the data storage unit 32.
반면에, 상기 가속도감지부(14)에서 감지된 가속도를 상기 제어부(34)에서 순간주파수로 연산한 값이 고주파(3∼8Hz)가 많은 평탄한도로의 주파수가 발생되면 상기 제어부(34)는 그에 해당하는 이득값을 상기 데이터저장부(32)로부터 독취하여 곱셈 연산하여 도 4c에 도시된 바와 같이, MIN곡선이 하향조정될 수 있도록 상기 제 1,2솔레노이드밸브(11,12)를 제어하여 차량의 승차감이 향상될 수 있도록 한다.On the other hand, when the frequency detected by the acceleration sensing unit 14 as the instantaneous frequency calculated by the instantaneous frequency of the high frequency (3 to 8 Hz) is generated, the control unit 34 is As shown in FIG. 4C, the first and second solenoid valves 11 and 12 are controlled to read-out the corresponding gain value from the data storage unit 32 and multiply them so that the MIN curve can be adjusted downward. The ride comfort can be improved.
한편, 상기한 본 발명에 따른 차량의 쇽업소버의 댐핑특성조절장치는 그 기술적 사상과 요지의 일탈함이 없이 항공기, 원동기 등의 운송수단의 쇽업소버에 적용 가능하다.On the other hand, the damping characteristic control device of the shock absorber of the vehicle according to the present invention can be applied to the shock absorber of the transportation means, such as aircraft, prime mover, etc. without departing from the spirit and spirit of the invention.
상기한 바와 같이, 본 발명에 따르는 차량의 쇽업소버의 댐핑특성조절장치에 의하면, 차량의 쇽업소버에 구성된 밸브를 솔레노이드에 의해 모두 가변될 수 있도록하여 차량에 가해지는 가속도를 효율적으로 저감시키고 그로인해 승차감이 향상될 뿐 아니라 차량에 가해지는 반작용을 줄여주며 핸들링특성도 향상시킬 수 있는 이점이 있다.As described above, according to the damping characteristic control device of the shock absorber of the vehicle according to the present invention, the valves configured on the shock absorber of the vehicle can be changed by the solenoid to effectively reduce the acceleration applied to the vehicle and thereby Not only is the ride quality improved, but the reaction to the vehicle is reduced and the handling characteristics are also improved.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970071165A KR100329059B1 (en) | 1997-12-20 | 1997-12-20 | Apparatus for controlling damping character of shock absorber at vehicle |
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| KR1019970071165A KR100329059B1 (en) | 1997-12-20 | 1997-12-20 | Apparatus for controlling damping character of shock absorber at vehicle |
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| KR100329059B1 KR100329059B1 (en) | 2002-11-22 |
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