CN103072441B - 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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- CN103072441B CN103072441B CN201110330334.1A CN201110330334A CN103072441B CN 103072441 B CN103072441 B CN 103072441B CN 201110330334 A CN201110330334 A CN 201110330334A CN 103072441 B CN103072441 B CN 103072441B
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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 the Electronic control suspension device and control method thereof with fail safe function, more specifically relate to a kind of in the process by Electronic control suspension device enforcement car height controlling, when car height controlling portion makes a mistake, overall height is made to keep certain Electronic control suspension device with fail safe function and control method thereof by fail safe action by shockproof control portion.
Background technology
In general, the Electronic control suspension device possessed in automobile is after to be control device comprehensively analyze the model selection of the driving conditions of the vehicle that the sensor from each several part being arranged at automobile detects and pavement state and driver, by the exhaust of giving the open and close controlling of gas and electromagnetic valve of the air based on air compressor, automatically adjust the height of vehicle and the spring constant of draft hitch and damping force, thus improve the device of sense and direction control and safety by bus in travelling.
This Electronic control suspension device is the shockproof control portion of car height controlling portion by responsible car height controlling and responsible shockproof control, automatically adjusts overall height and damping force, improves the device of sense and direction control and the safety by bus in travelling.
Car height controlling portion, from the signal needed for vehicle input control, controls the output sent for car height controlling by air bellow valve control IC and PWM, shockproof control portion, from the signal needed for vehicle input control, controls the amount of the electric current flowed in bumper.
Above-described technology represents the background technology of the technical field belonging to the present invention, and not represents prior art.
Summary of the invention
In Electronic control suspension device as above, when controlling overall height by car height controlling portion, carry out following axle to 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, then put down trailing wheel and control overall height.
But controlling to carry out in the process of car height controlling as described above by axle, if car height controlling portion occurs abnormal, the state different with the height of trailing wheel with front-wheel travels by the state of vehicle, thus has the problem reducing sense and road-holding property by bus.
In order to improve problem as above, the object of the present invention is to provide a kind of Electronic control suspension device and the control method thereof with fail safe function, in the present invention, implemented in the process of car height controlling by Electronic control suspension device, when car height controlling portion makes a mistake, overall height is made to keep certain by fail safe action by shockproof control portion.
The Electronic control suspension device with fail safe function provided according to an aspect of the present invention, is characterized in that, comprising: air bellow (Air Spring) valve control IC, for controlling air bellow valve; Car height controlling portion, in order to car height controlling, not only to the control signal of air bellow valve control IC delivery air spring loaded valve, and controls to implement car height controlling by PWM; Shockproof control portion, damping force is not controlled by means of only the amount controlling the electric current flowed in bumper, and when from car height controlling portion input fault signal, output switching signal, according to overall height signal, the control signal of the air bellow valve of overall height is regulated to export to air bellow valve control IC by being used for; And switch portion, according to shockproof control portion switching signal, optionally pass to air bellow valve control IC by the control signal of the air bellow valve exported from car height controlling portion with from the control signal of the air bellow valve of shockproof control portion output.
The control method with the Electronic control suspension device of fail safe function provided according to a further aspect in the invention, is characterized in that, comprising: the step judging whether the breakdown signal inputting car height controlling portion; If input has breakdown signal, then output switching signal, receive 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, target overall height is set as overall height the highest in the overall height signal of each wheel.
As mentioned above, in the present invention, implemented in the process of car height controlling by Electronic control suspension device, when car height controlling portion makes a mistake, by fail safe action, make overall height keep certain by shockproof control portion, thus improve sense and the road-holding property by bus of vehicle.
Accompanying drawing explanation
Fig. 1 represents the block diagram with the Electronic control suspension device of fail safe function according to one embodiment of the invention.
Fig. 2 is for illustration of the diagram of circuit with the control method of the Electronic control suspension device of fail safe function according to one embodiment of the invention.
Fig. 3 is the pneumatics circuit for illustration of the action by the air bellow valve run according to the control method with the Electronic control suspension device of fail safe function of one embodiment of the invention.
The explanation of Reference numeral
10: car height controlling portion
20: shockproof control portion
30: switch portion
40: air bellow valve control IC
50: air bellow valve
60: bumper
70: air bellow
80: compressor
Detailed description of the invention
Below, be described with reference to the embodiment of accompanying drawing to the Electronic control suspension device and control method thereof with fail safe function according to the present invention.In the process, the thickness of the lines illustrated in accompanying drawing or the size of inscape etc. are in order to the definition that illustrates and convenient and may illustrate turgidly.Further, term described later is the term that the function considered in the present invention defines, and they can be different according to the intention of user, application person or convention.Therefore, the definition for this term should based on this specification sheets content on the whole.
Fig. 1 represents the block diagram with the Electronic control suspension device of fail safe function according to one embodiment of the invention.
In the present embodiment, save the general formation of Electronic control suspension device, and only the formation relevant to fail safe function as feature of the present invention is 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 portion 10, shockproof control portion 20 and switch portion 30.
Air bellow valve control IC 40 controls air bellow valve 50, promotes overall height by injecting air to air bellow (not shown).
Car height controlling portion 10 is in order to car height controlling, and the control signal to air bellow valve control IC40 delivery air spring loaded valve 50 promotes overall height, controls to deflate from air bellow to reduce overall height, thus implement car height controlling by PWM.
Shockproof control portion 20 controls damping force by the amount of the electric current controlling flowing in bumper 60, and when from car height controlling portion 10 input fault signal, output switching signal, according to overall height signal, the control signal of the air bellow valve 50 of overall height is regulated to export to air bellow valve control IC40 by being used for.
Switch portion 30 is switching signal according to shockproof control portion 20 and starts, the control signal of the air bellow valve 50 exported from car height controlling portion 10 and the control signal of air bellow valve 50 that exports from shockproof control portion 20 are optionally passed to air bellow valve control IC40.
Switch portion 30 is under car height controlling portion 10 is normal situation, by the switching signal exported from shockproof control portion 20, first switch 32 is connected, second switch 34 disconnects, the control signal of the air bellow valve 50 exported from car height controlling portion 10 is made to be delivered to air bellow valve control IC40, when car height controlling portion 10 is fault, by the switching signal exported from shockproof control portion 20, first switch 32 disconnects, second switch 34 is connected, and makes the control signal of the air bellow valve 50 exported from shockproof control portion 20 be delivered to air bellow valve control IC40.
In the Electronic control suspension device as constructed as above with fail safe function, under car height controlling portion 10 is normal situation, along with the second switch 34 of switch portion 30 disconnects, by the control signal exported from car height controlling portion 10 to carry out car height controlling, if but car height controlling portion 10 et out of order, then from the shockproof control portion 20 output switching signal receiving breakdown signal, along with the second switch 34 of switch portion 30 is connected, air bellow valve control IC40 is exported to by the control signal of the air bellow valve 50 exported from shockproof control portion 20, thus undertaken by fail-safe car height controlling by shockproof control portion 20.
And, with reference to illustrate in Fig. 2 for illustration of according to the pneumatics circuit for illustration of the action by the air bellow valve run according to the control method with the Electronic control suspension device of fail safe function of one embodiment of the invention illustrated in the diagram of circuit with the control method of the Electronic control suspension device of fail safe function of one embodiment of the invention and Fig. 3, the control method with the Electronic control suspension device of fail safe function of another side according to the present invention is described.
First, as shown in Figure 2, shockproof control portion 20 judges whether inputted breakdown signal (S10) the signal inputted from car height controlling portion 10.
If input has breakdown signal, then to switch portion 30 output switching signal, second switch 34 is connected, export to air bellow valve control IC40 (S20) by the control signal of the air bellow valve 50 exported from shockproof control portion 20.
Then, the overall height signal (S30) of each wheel is received by vehicle height sensor (not shown).
Based on the overall height signal of each wheel received thus, setting is used for the target overall height (S40) of car height controlling.
Now, target overall height will be set as overall height the highest in the overall height information of each wheel.
That is, the air bellow valve 50 that can be controlled by air bellow valve control IC40 is controlled, come to inject air to air bellow, thus promote overall height.Therefore, after the highest overall height is set as target overall height, improves the wheel that overall height is low, make overall height consistent identical (S50).
During target setting overall height described above, in order to reach target overall height, improving overall height by opening the air bellow valve 50 corresponding with each wheel, making the overall height of whole wheel identical.
As shown in Figure 3, car height controlling portion 10 controls compressor 80 and air bellow valve 50 by air bellow valve control IC40.Therefore, due to the action of injecting air to air bellow valve 50 can be realized by shockproof control portion 20, namely the action of overall height is promoted, if therefore car height controlling portion 10 et out of order, then with the highest air bellow 70 of overall height for benchmark, open all the other 3 air bellow valves 50 that can be controlled by air bellow valve control IC40, inject air to air bellow 70, thus lifting overall height, make overall height unanimously identical.
As described above by the control method of Electronic control suspension device with fail safe function, if car height controlling portion 10 et out of order, the overall height signal of each wheel is then received from shockproof control portion 20, after the highest overall height is set as 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 illustrated in accompanying drawing, but this is only illustrate, and those skilled in the art in the invention should be appreciated that other embodiment that therefrom can realize various deformation and equalization.Therefore, technical protection scope of the present invention should be defined by the claims.
Claims (3)
1. there is an Electronic control suspension device for fail safe function, it is characterized in that, comprising:
Air bellow valve control IC, for controlling air bellow valve;
Car height controlling portion, in order to car height controlling, not only exports the control signal of described air bellow valve to described air bellow valve control IC, and controls to implement car height controlling by PWM;
Shockproof control portion, damping force is not controlled by means of only the amount controlling the electric current flowed in bumper, and when from described car height controlling portion input fault signal, output switching signal, according to overall height signal, the control signal of the described air bellow valve of overall height is regulated to export to described air bellow valve control IC by being used for; And
Switch portion, according to the described switching signal in described shockproof control portion, optionally pass to described air bellow valve control IC by the control signal of the described air bellow valve exported from described car height controlling portion with from the control signal of the described air bellow valve of described shockproof control portion output.
2. there is a control method for the Electronic control suspension device of fail safe function, it is characterized in that, comprising:
Shockproof control portion judges the step whether inputting the breakdown signal in car height controlling portion from the signal of car height controlling portion input;
If input has described breakdown signal, then shockproof control portion output switching signal, export to air bellow valve control IC by the control signal of the air bellow valve exported from shockproof control portion, and the step of the overall height signal of reception 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 the Electronic control suspension device of fail safe function according to claim 2, is characterized in that, described target overall height is set as overall height the highest 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 CN103072441A (en) | 2013-05-01 |
| CN103072441B true CN103072441B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102083840B1 (en) * | 2013-10-10 | 2020-03-03 | 현대모비스 주식회사 | Micro leakage detecting device of suspension device and Method for detecting micro leakage |
| JP6622129B2 (en) * | 2016-03-28 | 2019-12-18 | 株式会社ショーワ | Vehicle height adjustment device |
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 |
-
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 |
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| CN103072441A (en) | 2013-05-01 |
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