CN113280715B - Quick calibration method for air suspension - Google Patents
Quick calibration method for air suspension Download PDFInfo
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- CN113280715B CN113280715B CN202110095186.3A CN202110095186A CN113280715B CN 113280715 B CN113280715 B CN 113280715B CN 202110095186 A CN202110095186 A CN 202110095186A CN 113280715 B CN113280715 B CN 113280715B
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- calibration
- air suspension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a quick calibration method of an air suspension. The calibration steps comprise: before calibration, function checking, namely lifting the suspension until the calibration cushion block is met, placing the suspension into the calibration cushion block conveniently, reducing the suspension until the calibration cushion block is compressed, reading the current height value H 'by calibration software, if the current height value H' is within the range of H+/-H, brushing H 'to the ECU to finish the calibration, and if the current height value H' is not within the range of H+/-H, checking the parts and installation of the air suspension, and after the problem is eliminated, re-calibrating according to the problem until the calibration is finished. The calibration method is simple and quick, low in cost, convenient to use, stable and reliable, applicable to different vehicle types and strong in universality.
Description
Technical Field
The invention relates to a quick calibration method for an air suspension, and belongs to the technical field of automobile assembly.
Background
The air suspension vehicle can meet the comfort requirement and the height rising and falling control requirement of the vehicle, and is a future development trend. In order to realize the air suspension height adjusting function, relevant height values need to be written into an air suspension controller (ECU) program after the air suspension is assembled, so that the ECU can perform logic operation according to the written values to control the suspension height.
In the air suspension calibration, any point on a vehicle frame or a vehicle body can be selected as a measuring point theoretically, the air suspension is controlled to ascend or descend so that the height of the measuring point reaches the theoretical height, and then the calibration is carried out. But the calibration operation of measuring the measuring point and comparing the measuring point with the theoretical value while adjusting the height of the suspension has low efficiency and large error.
Disclosure of Invention
The invention aims to provide a quick calibration method for an air suspension, which can be suitable for different vehicle types and has strong generality.
In order to achieve the above purpose, the invention adopts the following technical scheme: a quick calibration method for an air suspension comprises the following steps,
step 1, checking the suspension function, namely, when calibration is started, checking the air suspension function: the suspension frame is continuously lifted when the lifting key is continuously pressed, the suspension frame is continuously lowered when the lifting key or the lowering key is released, and the suspension frame is immediately stopped from lifting or lowering; otherwise, the suspension system fault is detected and eliminated to ensure that the ascending and descending functions are normal;
and 2, after checking and confirming that the air suspension is normal in function, lifting the air suspension, placing a calibration cushion block between a rear axle tube and a lower beneficial surface of the vehicle frame, controlling the air suspension to descend until the lower beneficial surface of the vehicle frame is contacted with the calibration cushion block, pressing the calibration cushion block on the axle tube, and reading the current air suspension height value H' by using calibration software.
Furthermore, in the step 2, only the working level value of the air suspension is required to be calibrated, the air suspension controller calculates and controls the high level value and the low level value of the suspension according to the calibrated working level value, and the high level and the low level are not required to be additionally calibrated; wherein the average value is 125mm, the high value is 162mm, and the low value is 85mm.
Further, three typical height states of the air suspension are working level height values h±h, where±h is an allowable error range of the working height, and the highest level height value: hmax=h+Δh, least significant height value: hmin=h- Δh ', and constants of ±h= ±4.8mm, Δh=37 mm, Δh' = -40mm are written in advance in an air suspension ECU program, so that only the working level H value required to be set after the air suspension assembly is completed is written into the air suspension controller, and the air suspension controller can control the air suspension to achieve three height values of the highest level, the lowest level and the working level.
Further, in the step 2, after the calibration software is used to read the current air suspension height value H ', it is determined whether the current height value H' is within the range of h±h; if the current H 'is within the range of H+/-H, using calibration software to brush the H' to the air suspension controller for successful calibration, then controlling the air suspension to rise, taking out a calibration block, and ending the whole calibration work; if the current H' is not in the range of H+/-H, the calibration software does not allow calibration, and the fault is reminded to be removed.
Further, if the current H' is not in the range of H+/-H, controlling the suspension to ascend, taking out the calibration cushion block, checking whether the air suspension has parts damaged, has assembly errors and eliminates related faults, and then re-calibrating from the calibration starting step.
Furthermore, after the air suspension is lifted, the distance between the axle tube and the lower beneficial surface of the vehicle frame is required to be larger than the height of the calibration block so as to ensure that the calibration block can be placed in the vehicle.
Further, the calibration cushion block sequentially comprises a top block, a middle cushion block and a base from top to bottom, and all the components are assembled and installed through positioning holes and bosses; the top piece is concave, and its upper portion is for being used for dodging the rectangle recess of suspension part buffer block, and two diameters are phi 15mm respectively with vertically having opened in the bottom, and the degree of depth is 10 mm's locating hole, middle gasket is the rectangle piece, and the symmetry is equipped with gasket boss and gasket locating hole with the locating hole assorted of top piece lower part on it, the lower part of base is opened and is convenient for with rear axle shaft tube complex convex recess, the magnet that prevents the landing of demarcation piece, assurance base and central siphon inseparable actuation is adorned at the top of convex recess, the upper portion of base vertically has two diameters to be phi 15mm high 10 mm's base boss.
Furthermore, the number of the middle gaskets can be increased or decreased according to the height calibration requirements of different vehicle types, so that the calibration cushion blocks can be calibrated according to the calibration height requirements of different vehicle types.
The invention has the beneficial effects that: according to the invention, the working level is quickly and accurately found by adopting the method of arranging the calibration block between the axle tube and the lower beneficial surface of the vehicle frame, and manual repeated measurement and comparison are not needed, so that the labor intensity of workers is reduced, and the production efficiency is improved. Meanwhile, the invention adopts the calibration cushion block with higher precision, and the height of the calibration cushion block corresponds to the theoretical distance between the rear axle tube and the lower beneficial surface of the frame when the air suspension works flat. Different calibration cushion blocks are adopted when different vehicle types are calibrated or different working level heights are required. The invention has the function of self-checking error prevention in the calibration process, and prohibits calibration when the calibration parameters exceed the allowable error range, and reminds to check parts and assembly problems so as to remove faults.
Drawings
FIG. 1 is a flow chart of a calibration method of the present invention.
FIG. 2 is a schematic diagram of the structure of the marked pad in the present invention.
FIG. 3 is a schematic diagram of the use of the marking pad of the present invention.
Description of the drawings: 1-top block, 2-middle gasket, 3-middle gasket, 4-base, 5-frame lower benefit face, 6-rear axle shaft tube, 7-calibration cushion block and 8-suspension buffer block.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The embodiment provides a quick calibration method for an air suspension, wherein a flow chart of the calibration method is shown in fig. 1, and a schematic diagram of a calibration cushion block in the calibration method is shown in fig. 2.
Three typical height states of an air suspension are the working level height value h±h (±h is the allowable error range of the working height), the highest level height value: hmax=h+Δh, least significant height value: hmin=h- Δh'. In the ECU program of the air suspension, the + -h, the delta h and the delta h' are written as constants in advance, so that the ECU can control the air suspension to realize three height values of the highest position, the lowest position and the working position only by calibrating the working position of the air suspension after the air suspension is assembled.
When calibration starts, firstly, the function of the air suspension is checked to ensure that the ascending and descending functions of the air suspension are normal. After checking and confirming that the suspension functions normally, the air suspension is lifted and the calibration cushion block is placed between the rear axle tube and the lower beneficial surface of the frame (the distance between the rear axle tube and the lower beneficial surface of the frame after the suspension is lifted is larger than the height of the calibration block, so that the calibration block can be placed in the vehicle. And controlling the air suspension to descend until the lower beneficial surface of the frame contacts with the calibration cushion block, pressing the calibration cushion block on the axle tube, and reading the current air suspension height value H' by using calibration software.
And judging whether the current height value H' is within the range of H+/-H. If the current H 'is within the range of H+/-H, the calibration software is used for brushing the H' to the ECU to calibrate successfully, then the air suspension is controlled to ascend, the calibration block is taken out, and the whole calibration work is finished.
If the current H' is not in the range of H+/-H, the calibration software does not allow calibration, and the fault is reminded to be removed. At the moment, the suspension is controlled to ascend, the calibration cushion block is taken out, whether the air suspension has part damage, assembly errors and related faults are checked, and then the calibration is carried out again from the calibration starting step.
The invention has the advantages that: firstly, the invention adopts a method of adding a cushion block for calibrating between the rear axle tube and the lower beneficial surface of the frame to simply, conveniently and rapidly adjust the suspension to reach the working level.
And secondly, the invention only needs to calibrate the working level of the air suspension, and the air suspension controller calculates and controls the high level and the low level of the suspension according to the calibrated working level numerical value without additionally calibrating the high level and the low level.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (7)
1. A quick calibration method for an air suspension is characterized by comprising the following steps of: comprises the following steps of the method,
step 1, checking the suspension function, namely, when calibration is started, checking the air suspension function: the suspension frame is continuously lifted when the lifting key is continuously pressed, the suspension frame is continuously lowered when the lifting key or the lowering key is released, and the suspension frame is immediately stopped from lifting or lowering; otherwise, the suspension system fault is detected and eliminated to ensure that the ascending and descending functions are normal;
step 2, after checking and confirming that the air suspension is normal in function, lifting the air suspension and placing a calibration cushion block between a rear axle tube and a lower beneficial surface of a vehicle frame, controlling the air suspension to descend until the lower beneficial surface of the vehicle frame is contacted with the calibration cushion block, pressing the calibration cushion block on the axle tube, and reading the current air suspension height value H' by using calibration software;
the calibration cushion block sequentially comprises a top block, a middle gasket and a base from top to bottom, and all the components are assembled and installed through positioning holes and bosses; the top piece is concave, and its upper portion is for being used for dodging the rectangle recess of suspension part buffer block, and two diameters are phi 15mm respectively with vertically having opened in the bottom, and the degree of depth is 10 mm's locating hole, middle gasket is the rectangle piece, and the symmetry is equipped with gasket boss and gasket locating hole with the locating hole assorted of top piece lower part on it, the lower part of base is opened and is convenient for with rear axle shaft tube complex convex recess, the magnet that prevents the landing of demarcation piece, assurance base and central siphon inseparable actuation is adorned at the top of convex recess, the upper portion of base vertically has two diameters to be phi 15mm high 10 mm's base boss.
2. The air suspension quick calibration method according to claim 1, wherein: in the step 2, only the working level value of the air suspension is required to be calibrated, the air suspension controller calculates and controls the high level value and the low level value of the suspension according to the calibrated working level value, and the high level and the low level are not required to be additionally calibrated; wherein the average value is 125mm, the high value is 162mm, and the low value is 85mm.
3. The air suspension quick calibration method according to claim 2, wherein: three typical height states of the air suspension are working level height values H+/-H, wherein+/-H is an allowable error range of the working height and the highest level height value: hmax=h+Δh, least significant height value: hmin=h- Δh ', and constants of ±h= ±4.8mm, Δh=37 mm, Δh' = -40mm are written in advance in an air suspension ECU program, so that only the working level H value required to be set after the air suspension assembly is completed is written into the air suspension controller, and the air suspension controller can control the air suspension to achieve three height values of the highest level, the lowest level and the working level.
4. The air suspension quick calibration method according to claim 1, wherein: in the step 2, after the current air suspension height value H 'is read by using calibration software, judging whether the current height value H' is within the range of H+/-H; if the current H 'is within the range of H+/-H, using calibration software to brush the H' to the air suspension controller for successful calibration, then controlling the air suspension to rise, taking out a calibration block, and ending the whole calibration work;
if the current H' is not in the range of H+/-H, the calibration software does not allow calibration, and the fault is reminded to be removed.
5. The air suspension quick calibration method according to claim 4, wherein: if the current H' is not in the range of H+/-H, controlling the suspension to ascend, taking out the calibration cushion block, checking whether the air suspension has parts damaged, assembly errors and related faults, and then recalibrating from the calibration starting step.
6. The air suspension quick calibration method according to claim 1, wherein: after the air suspension rises, the distance between the axle tube and the lower beneficial surface of the vehicle frame is required to be larger than the height of the calibration block so as to ensure that the calibration block can be placed in the vehicle frame.
7. The air suspension quick calibration method according to claim 1, wherein: the number of the middle gaskets can be increased or decreased according to the height calibration requirements of different vehicle types, so that the calibration cushion blocks can be calibrated according to the calibration height requirements of different vehicle types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110095186.3A CN113280715B (en) | 2021-01-25 | 2021-01-25 | Quick calibration method for air suspension |
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| CN202110095186.3A CN113280715B (en) | 2021-01-25 | 2021-01-25 | Quick calibration method for air suspension |
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| CN113280715B true CN113280715B (en) | 2023-09-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114562971B (en) * | 2022-02-18 | 2024-04-02 | 南京依维柯汽车有限公司 | Initial height self-adaptive system of air suspension and application method thereof |
| CN114964017A (en) * | 2022-05-31 | 2022-08-30 | 中国第一汽车股份有限公司 | Vehicle height calibration method and system of air suspension and storage medium |
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| JPH10160438A (en) * | 1996-12-04 | 1998-06-19 | Ishikawajima Harima Heavy Ind Co Ltd | Calibration device for sensor roll |
| JP2001287675A (en) * | 2000-04-05 | 2001-10-16 | Mitsubishi Motors Corp | Adjustment device for air suspension |
| CN103085627A (en) * | 2013-01-25 | 2013-05-08 | 中国公路车辆机械有限公司 | Air suspension control system for truck and trailer |
| CN106608155A (en) * | 2015-10-26 | 2017-05-03 | 比亚迪股份有限公司 | Vehicle electric control suspension height automatic calibration method and system and calibration device |
| CN110836782A (en) * | 2019-10-12 | 2020-02-25 | 中国第一汽车股份有限公司 | Manufacturing method of air suspension for vehicle |
| CN210893710U (en) * | 2019-12-31 | 2020-06-30 | 中汽研汽车检验中心(武汉)有限公司 | Semitrailer air suspension test bench |
| CN211106820U (en) * | 2019-09-24 | 2020-07-28 | 南京航空航天大学金城学院 | Atomic vehicle design and implementation system based on ECAS air suspension system |
| CN211478650U (en) * | 2019-10-23 | 2020-09-11 | 一汽解放汽车有限公司 | Auxiliary device for calibrating height of automotive suspension |
| CN212340674U (en) * | 2020-05-21 | 2021-01-12 | 中国第一汽车股份有限公司 | Calibration device for steering tie rod rack of automobile front suspension |
-
2021
- 2021-01-25 CN CN202110095186.3A patent/CN113280715B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160438A (en) * | 1996-12-04 | 1998-06-19 | Ishikawajima Harima Heavy Ind Co Ltd | Calibration device for sensor roll |
| JP2001287675A (en) * | 2000-04-05 | 2001-10-16 | Mitsubishi Motors Corp | Adjustment device for air suspension |
| CN103085627A (en) * | 2013-01-25 | 2013-05-08 | 中国公路车辆机械有限公司 | Air suspension control system for truck and trailer |
| CN106608155A (en) * | 2015-10-26 | 2017-05-03 | 比亚迪股份有限公司 | Vehicle electric control suspension height automatic calibration method and system and calibration device |
| CN211106820U (en) * | 2019-09-24 | 2020-07-28 | 南京航空航天大学金城学院 | Atomic vehicle design and implementation system based on ECAS air suspension system |
| CN110836782A (en) * | 2019-10-12 | 2020-02-25 | 中国第一汽车股份有限公司 | Manufacturing method of air suspension for vehicle |
| CN211478650U (en) * | 2019-10-23 | 2020-09-11 | 一汽解放汽车有限公司 | Auxiliary device for calibrating height of automotive suspension |
| CN210893710U (en) * | 2019-12-31 | 2020-06-30 | 中汽研汽车检验中心(武汉)有限公司 | Semitrailer air suspension test bench |
| CN212340674U (en) * | 2020-05-21 | 2021-01-12 | 中国第一汽车股份有限公司 | Calibration device for steering tie rod rack of automobile front suspension |
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| CN113280715A (en) | 2021-08-20 |
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