CN103072441A - Electronic control suspension device with fault safety function and control method thereof - Google Patents
Electronic control suspension device with fault safety function and control method thereof Download PDFInfo
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- CN103072441A CN103072441A CN2011103303341A CN201110330334A CN103072441A CN 103072441 A CN103072441 A CN 103072441A CN 2011103303341 A CN2011103303341 A CN 2011103303341A CN 201110330334 A CN201110330334 A CN 201110330334A CN 103072441 A CN103072441 A CN 103072441A
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- air bellow
- overall height
- bellow valve
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Abstract
The invention provides an electronic control suspension device with a fault safety function and a control method thereof. When the vehicle height is controlled by the electronic control suspension device, and a vehicle height control part has a fault, the vehicle height is fixed by the fault safety action through a damping control part, so the ride feeling and the operation stability of a vehicle are improved.
Description
Technical field
The present invention relates to have Electronic control suspension device and the control method thereof of fail safe function, say more in detail and relate to a kind of enforcement by the Electronic control suspension device in the process of car height controlling, when car height controlling section makes a mistake, make overall height keep certain Electronic control suspension device and control method thereof with fail safe function by the fail safe action by the damping control part.
Background technology
In general, the Electronic control suspension device that possesses in the automobile is control device to after carrying out comprehensive analyses from the driving conditions of the detected vehicle of sensor of the each several part that is arranged at automobile and pavement state and driver's model selection, by the exhaust based on the open and close controlling of giving gas and electromagnetic valve of the air of air compressor, automatically adjust spring constant and the damping force of height and the draft hitch of vehicle, thereby improve the device of ride sense and direction control and safety in travelling.
This Electronic control suspension device is by the damping control part of the car height controlling section that is responsible for car height controlling and responsible damping control, automatically adjusts overall height and damping force, improves the device of ride sense and direction control and safety in travelling.
Car height controlling section controls the output of sending for car height controlling from the required signal of vehicle input control by air bellow valve control IC and PWM, and the damping control part is controlled the amount of the electric current that flows in the bumper from the required signal of vehicle input control.
Above-described technology represents the background technology of the technical field under the present invention, and is not the expression prior art.
Summary of the invention
In aforesaid Electronic control suspension device, by car height controlling section control overall height the time, carry out following axle control, that is, if need to lift car body, then after lifting trailing wheel, lift front-wheel again and control, if need to put down car body, then after putting down front-wheel, put down trailing wheel again and control overall height.
But, undertaken in the process of car height controlling by axle control as mentioned above, if car height controlling section abnormal, the state of vehicle will travel with the different state of height of front-wheel and trailing wheel, thereby has the problem that reduces by bus sense and road-holding property.
In order to improve aforesaid problem, the object of the present invention is to provide a kind of Electronic control suspension device and control method thereof with fail safe function, in the present invention, implementing by the Electronic control suspension device in the process of car height controlling, when car height controlling section makes a mistake, make overall height keep certain by the fail safe action by the damping control part.
The Electronic control suspension device with fail safe function that provides according to an aspect of the present invention is characterized in that, comprising: air bellow (Air Spring) valve control IC is used for control air bellow valve; Car height controlling section for car height controlling, not only controls the control signal of IC delivery air spring loaded valve, and implements car height controlling by PWM control to the air bellow valve; The damping control part, not only control damping force by the amount of electric current mobile in the control bumper, and from car height controlling section input fault signal the time, the output switching signal, according to the overall height signal, will export to air bellow valve control IC for the control signal of the air bellow valve of regulating overall height; And switch portion, according to damping control part switching signal, will optionally pass to air bellow valve control IC from the control signal of the air bellow valve of car height controlling section output with from the control signal of the air bellow valve of damping control part output.
The control method of the Electronic control suspension device with fail safe function that provides according to a further aspect in the invention is characterized in that, comprising: the step that judges whether to input the breakdown signal of car height controlling section; If input has a breakdown signal, output switching signal then receives the step of the overall height signal of wheel; Based on the overall height signal of wheel, the step of target setting overall height; And open the air bellow valve corresponding with each wheel, to reach the step of target overall height.
The present invention is characterized in that, the target overall height is set as the highest overall height in the overall height signal of each wheel.
As mentioned above, in the present invention, implementing by the Electronic control suspension device in the process of car height controlling, when car height controlling section makes a mistake, by the fail safe action, make overall height keep certain by the damping control part, thereby improve by bus sense and the road-holding property of vehicle.
Description of drawings
Fig. 1 is that expression is according to the block diagram of the Electronic control suspension device with fail safe function of one embodiment of the invention.
Fig. 2 is for the diagram of circuit of explanation according to the control method of the Electronic control suspension device with fail safe function of one embodiment of the invention.
Fig. 3 is by the pneumatics circuit according to the action of the air bellow valve of the control method operation of the Electronic control suspension device with fail safe function of one embodiment of the invention for explanation.
The explanation of Reference numeral
10: car height controlling section
20: the damping control part
30: switch portion
40: air bellow valve control IC
50: the air bellow valve
60: bumper
70: air bellow
80: compressor
The specific embodiment
Below, with reference to accompanying drawing to having the Electronic control suspension device of fail safe function and an embodiment of control method describes according to of the present invention.In this process, the thickness of the lines that illustrate in the accompanying drawing or the size of inscape etc. may illustrate with facility turgidly for the definition on illustrating.And term described later is the term of considering that the function among the present invention defines, and it is according to user, application person's intention or convention and can be different.Therefore, should be based on this specification sheets content on the whole for the definition of this term.
Fig. 1 is that expression is according to the block diagram of the Electronic control suspension device with fail safe function of one embodiment of the invention.
In the present embodiment, save the general formation of Electronic control suspension device, and only the formation relevant with the fail safe function as feature of the present invention described.
As shown in Figure 1, according to the Electronic control suspension device with fail safe function of one embodiment of the invention, comprise air bellow (Air Spring) valve control IC40, car height controlling section 10, damping control part 20 and switch portion 30.
Air bellow valve control IC 40 control air bellow valves 50 promote overall height by injecting air to air bellow (not shown).
Car height controlling section 10 is for car height controlling, and control signal from IC40 delivery air spring loaded valve 50 to the air bellow valve that control promotes overall height, deflates to reduce overall height by PWM control from air bellow, thereby implements car height controlling.
In the Electronic control suspension device with fail safe function that as above consists of, be in the normal situation in car height controlling section 10, second switch 34 disconnections along with switch portion 30, carry out car height controlling by the control signal from 10 outputs of car height controlling section, if but car height controlling section 10 et out of orders, then from receiving the damping control part 20 output switching signals of breakdown signal, along with the second switch 34 of switch portion 30 is connected, export to air bellow valve control IC40 by the control signal of the air bellow valve 50 of exporting from damping control part 20, thereby undertaken by fail-safe car height controlling by damping control part 20.
And, be used for explanation by the pneumatics circuit according to the action of the air bellow valve of the control method operation of the Electronic control suspension device with fail safe function of one embodiment of the invention with reference to the explanation that is used for that illustrates among Fig. 2 according to what the diagram of circuit of the control method of the Electronic control suspension device with fail safe function of one embodiment of the invention and Fig. 3 illustrated, the control method according to the Electronic control suspension device with fail safe function of another side of the present invention is described.
At first, as shown in Figure 2, damping control part 20 judges from the signal of car height controlling section 10 inputs whether inputted breakdown signal (S10).
If input has breakdown signal, then to switch portion 30 output switching signals, second switch 34 is connected, export to air bellow valve control IC40 (S20) by the control signal of the air bellow valve 50 of exporting from damping control part 20.
Then, receive the overall height signal (S30) of each wheel by vehicle height sensor (not shown).
Based on the overall height signal of each wheel that receives thus, set the target overall height (S40) that is used for car height controlling.
At this moment, the target overall height will be set as the highest overall height in the overall height information of each wheel.
That is, to controlling by the air bellow valve 50 of air bellow valve control IC40 control, come to inject air to air bellow, thereby promote overall height.Therefore, after the highest overall height is set as the target overall height, improve the low wheel of overall height, make overall height consistent identical (S50).
During the target setting overall height, in order to reach the target overall height, improve overall height by opening the air bellow valve 50 corresponding with each wheel as mentioned above, make the overall height of whole wheels identical.
As shown in Figure 3, car height controlling section 10 is by air bellow valve control IC40 control compressor 80 and air bellow valve 50.Therefore, owing to can realize to the action of air bellow valve 50 injection air by damping control part 20, namely promote the action of overall height, if so car height controlling section 10 et out of orders, then take the highest air bellow 70 of overall height as benchmark, open all the other 3 the air bellow valves 50 that to control by air bellow valve control IC40, come to inject air to air bellow 70, thereby the lifting overall height makes overall height unanimously identical.
The control method of the Electronic control suspension device by having the fail safe function as mentioned above, if car height controlling section 10 et out of orders, then receive the overall height signal of each wheel from damping control part 20, after the highest overall height is set as the target overall height, improve the overall height of each wheel, make it unanimously identical, carry out based on fail-safe car height controlling.
The present invention is illustrated with reference to the embodiment that illustrates in the accompanying drawing, but this only is illustration, and those skilled in the art in the invention should be appreciated that and can therefrom realize various deformation and other impartial embodiment.Therefore, technical protection scope of the present invention should be defined by the claims.
Claims (3)
1. the Electronic control suspension device with fail safe function is characterized in that, comprising:
Air bellow valve control IC is used for control air bellow valve;
Car height controlling section for car height controlling, not only exports the control signal of described air bellow valve, and implements car height controlling by PWM control to described air bellow valve control IC;
The damping control part, not only control damping force by the amount of electric current mobile in the control bumper, and from described car height controlling section input fault signal the time, the output switching signal, according to the overall height signal, will export to described air bellow valve control IC for the control signal of the described air bellow valve of regulating overall height; And
Switch portion, according to the described switching signal of described damping control part, will optionally pass to described air bellow valve control IC from the control signal of the described air bellow valve of described car height controlling section output with from the control signal of the described air bellow valve of described damping control part output.
2. the control method with Electronic control suspension device of fail safe function is characterized in that, comprising:
Judge whether to input the step of the breakdown signal of car height controlling section;
If input has a described breakdown signal, output switching signal then receives the step of the overall height signal of wheel;
Based on the overall height signal of described wheel, the step of target setting overall height; And
Open the air bellow valve corresponding with each wheel, to reach the step of described target overall height.
3. the control method with Electronic control suspension device of fail safe function according to claim 2 is characterized in that, described target overall height is set as the highest overall height in the overall height signal of described each wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330334.1A CN103072441B (en) | 2011-10-26 | 2011-10-26 | Electronic control suspension device with fault safety function and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330334.1A CN103072441B (en) | 2011-10-26 | 2011-10-26 | Electronic control suspension device with fault safety function and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103072441A true CN103072441A (en) | 2013-05-01 |
| CN103072441B CN103072441B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110330334.1A Active CN103072441B (en) | 2011-10-26 | 2011-10-26 | Electronic control suspension device with fault safety function and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568317A (en) * | 2013-10-10 | 2015-04-29 | 现代摩比斯株式会社 | Micro leakage detecting device of suspension device and method for detecting micro leakage |
| CN107444551A (en) * | 2016-03-28 | 2017-12-08 | 株式会社昭和 | Height of car adjusting apparatus |
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|---|---|---|---|---|
| DE19717686A1 (en) * | 1997-04-28 | 1998-10-29 | Itt Mfg Enterprises Inc | Circuit arrangement for a motor vehicle control system |
| US6224044B1 (en) * | 1999-01-20 | 2001-05-01 | Continental Aktiengesellschaft | Level control system for a motor vehicle |
| CN1618638A (en) * | 2003-10-16 | 2005-05-25 | 三菱扶桑卡客车株式会社 | Vehicle height adjusting apparatus |
| CN1890118A (en) * | 2003-10-17 | 2007-01-03 | 快速气垫有限公司 | Vehicle suspension control |
| CN1974242A (en) * | 2005-12-02 | 2007-06-06 | 株式会社万都 | Vehicle height controlling suspension apparatus having signal-freeze determining function and vehicle height control method thereof |
| JP2007245956A (en) * | 2006-03-16 | 2007-09-27 | Toyota Motor Corp | Suspension control device |
-
2011
- 2011-10-26 CN CN201110330334.1A patent/CN103072441B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19717686A1 (en) * | 1997-04-28 | 1998-10-29 | Itt Mfg Enterprises Inc | Circuit arrangement for a motor vehicle control system |
| US6224044B1 (en) * | 1999-01-20 | 2001-05-01 | Continental Aktiengesellschaft | Level control system for a motor vehicle |
| CN1618638A (en) * | 2003-10-16 | 2005-05-25 | 三菱扶桑卡客车株式会社 | Vehicle height adjusting apparatus |
| CN1890118A (en) * | 2003-10-17 | 2007-01-03 | 快速气垫有限公司 | Vehicle suspension control |
| CN1974242A (en) * | 2005-12-02 | 2007-06-06 | 株式会社万都 | Vehicle height controlling suspension apparatus having signal-freeze determining function and vehicle height control method thereof |
| JP2007245956A (en) * | 2006-03-16 | 2007-09-27 | Toyota Motor Corp | Suspension control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568317A (en) * | 2013-10-10 | 2015-04-29 | 现代摩比斯株式会社 | Micro leakage detecting device of suspension device and method for detecting micro leakage |
| CN107444551A (en) * | 2016-03-28 | 2017-12-08 | 株式会社昭和 | Height of car adjusting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103072441B (en) | 2015-05-13 |
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