CN113280715A - Quick calibration method for air suspension - Google Patents
Quick calibration method for air suspension Download PDFInfo
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- CN113280715A CN113280715A CN202110095186.3A CN202110095186A CN113280715A CN 113280715 A CN113280715 A CN 113280715A CN 202110095186 A CN202110095186 A CN 202110095186A CN 113280715 A CN113280715 A CN 113280715A
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- calibration
- air suspension
- height
- 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
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- 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 for an air suspension. The calibration steps comprise: before calibration, checking functions, lifting the suspension until the calibration cushion block can be conveniently placed, placing the calibration cushion block, lowering the suspension until the calibration cushion block is pressed, reading a current height value H 'by calibration software, writing the H' into the ECU for calibration completion if the current height value H 'is within the range of H +/-H, checking parts and installation of the air suspension if the current height value H' is not within the range of H +/-H, and re-calibrating according to the above steps until the calibration is completed after problems are eliminated. 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 requirement of comfort and the requirement of vehicle height ascending and descending control, 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 (hereinafter referred to as ECU) program after the air suspension is assembled, so that the ECU can carry out logic operation according to the written values to control the suspension height.
In the calibration of the air suspension, 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 to enable the height of the measuring point to reach the theoretical height, and then calibration is carried out. But the calibration operation of measuring the measuring point and comparing the measuring point with a theoretical value while adjusting the height of the suspension frame 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 universality.
In order to achieve the purpose, the invention adopts the technical scheme that: a quick calibration method for an air suspension comprises the following steps,
and 2, after checking and confirming that the air suspension is normal in function, lifting the air suspension, placing a calibration cushion block between the rear axle shaft tube and the lower beneficial surface of the frame, controlling the air suspension to descend until the lower beneficial surface of the frame is in contact with the calibration cushion block and the calibration cushion block is tightly pressed on the axle shaft tube, and reading the height value H' of the current air suspension by using calibration software.
Furthermore, in the step 2, only the working level value of the air suspension needs to be calibrated, and the air suspension controller calculates the high value and the low value of the control suspension according to the difference value of the calibrated working level value without calibrating the high value and the low value separately; wherein the average value is 125mm, the high value is 162mm, and the low value is 85 mm.
Further, the three typical height states of the air suspension are a working horizontal height value H +/-H, wherein +/-H is an allowable error range of the working height and a highest position height value: hmax ═ H + Δ H, lowest order height value: in an air suspension ECU program, constants of +/-H-4.8 mm, delta H-37 mm and delta H-40 mm are written in advance, so that the height H value of the working level to be set is written into an air suspension controller after the air suspension is assembled, and the air suspension controller can control the air suspension to realize three height values of the highest position, the lowest position and the working level.
Further, in the step 2, after the current air suspension height value H 'is read by using calibration software, whether the current height value H' is within the range of H ± H is judged; if the current H 'is within the range of H +/-H, using calibration software to write H' to the air suspension controller for successful calibration, then controlling the air suspension to ascend, taking out a calibration block, and finishing the whole calibration work; and if the current H' is not within the range of H +/-H, the calibration software does not allow calibration, and the fault removal is reminded.
Further, if the current H' is not within the range of H +/-H, controlling the suspension to ascend, taking out the calibration cushion block, checking whether the air suspension has damaged parts or not, has assembly errors or not, eliminating related faults, and then carrying out calibration again 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 frame needs to be larger than the height of the calibration block so as to ensure that the calibration block can be placed in.
Furthermore, 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 kicking block is concave type, and its upper portion is for being used for dodging the rectangle recess of suspension part buffer block, and the bottom is horizontal and vertically respectively opened two diameters and is phi 15mm, and the degree of depth is 10 mm's locating hole, middle gasket is the rectangular block, its upper symmetry be equipped with the kicking block lower part locating hole assorted gasket boss and gasket locating hole, open the lower part of base have be convenient for with the convex recess of rear axle shaft pipe complex, the top dress of convex recess has been inlayed and is prevented to mark the piece landing, guarantees the magnet of the inseparable actuation of base and central siphon, the upper portion of base vertically has two diameters to be the base boss of phi 15mm height 10 mm.
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 block can be calibrated according to the calibration height requirements of different vehicle types.
The invention has the beneficial effects that: the invention adopts the method of placing the calibration block between the axle tube and the lower beneficial surface of the frame to quickly and accurately find the working level without manual repeated measurement and comparison, thereby reducing the labor intensity of workers and improving the production efficiency. 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 in the horizontal position. And different calibration cushion blocks are adopted when different vehicle types are calibrated or different working horizontal heights are required. The invention has the self-checking error-proofing function in the calibration process, and when the calibration parameter exceeds the allowable error range, the calibration is forbidden, and the inspection of parts and assembly problems are reminded so as to eliminate the fault.
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 calibration pad of the present invention.
FIG. 3 is a schematic diagram of the use of the calibration pad of the present invention.
Description of the drawings: 1-a top block, 2-a middle gasket, 3-a middle gasket, 4-a base, 5-a lower beneficial surface of a frame, 6-a rear axle tube, 7-a calibration cushion block and 8-a 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, a flow chart of the calibration method is shown in fig. 1, and a schematic use diagram of a calibration cushion block in the calibration method is shown in fig. 2.
Three typical height states of the air suspension are a working level height value H +/-H (+/-H is an allowable error range of the working height), a highest level height value: hmax ═ H + Δ H, lowest order height value: hmin is H- Δ H'. In an air suspension ECU program, +/-h, delta h and delta h' are written in advance as constants, so that the working level of the air suspension is calibrated only after the air suspension is assembled, and the ECU can control the air suspension to realize three height values of the highest position, the lowest position and the working level.
When the calibration is started, the function of the air suspension is checked firstly, and the ascending and descending functions are ensured to be normal. After the suspension function is confirmed to be normal through checking, 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 is larger than the height of the calibration block after the suspension is lifted, so that the calibration block can be placed in the air suspension). And controlling the air suspension to descend until the beneficial surface of the frame is in contact with the calibration cushion block and the calibration cushion block is pressed on the axle tube, and reading the current height value H' of the air suspension by using calibration software.
And judging whether the current height value H' is within the range of H +/-H. And if the current H 'is within the range of H +/-H, using calibration software to write H' into the ECU for successful calibration, then controlling the air suspension to ascend, taking out the calibration block, and finishing the whole calibration work.
And if the current H' is not within the range of H +/-H, the calibration software does not allow calibration, and the fault removal is reminded. And controlling the suspension to ascend, taking out the calibration cushion block, checking whether the air suspension has part damage and assembly error, eliminating related faults and then re-calibrating from the calibration starting step.
The invention has the advantages that: firstly, the method of adding the pad calibration cushion block between the axle tube of the rear axle and the lower beneficial surface of the frame is adopted to simply, conveniently and quickly 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 the difference value according to the calibrated working level value to control the high position and the low position of the suspension without calibrating the high position and the low position additionally.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (8)
1. A quick calibration method for an air suspension is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step 1, suspension function inspection, wherein when calibration is started, the air suspension function is firstly inspected: continuously pressing the ascending key suspension to continuously ascend, continuously pressing the descending key suspension to continuously descend, and loosening the ascending key or the descending key to immediately stop ascending or descending the suspension; otherwise, the fault of the suspension system is checked out 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 the rear axle shaft tube and the lower beneficial surface of the frame, controlling the air suspension to descend until the lower beneficial surface of the frame is in contact with the calibration cushion block and the calibration cushion block is tightly pressed on the axle shaft tube, and reading the height value H' of the current air suspension by using calibration software.
2. The method for rapidly calibrating the air suspension according to claim 1, which is characterized in that: in the step 2, only the working level value of the air suspension needs to be calibrated, and the air suspension controller calculates the high level value and the low level value of the control suspension according to the difference value of the calibrated working level value without calibrating the high level and the low level separately; wherein the average value is 125mm, the high value is 162mm, and the low value is 85 mm.
3. The method for rapidly calibrating the air suspension according to claim 2, wherein the method comprises the following steps: the three typical height states of the air suspension are a working horizontal height value H +/-H, wherein +/-H is an error range allowed by the working height and a highest position height value: hmax = H + Δ H, lowest order height value: hmin = H-delta H ', in an air suspension ECU program, constants of +/-H = +/-4.8 mm, delta H =37mm and delta H' = -40mm are written in advance, so that the height H value of the working level to be set is written into an air suspension controller after the air suspension is assembled, and the air suspension controller can control the air suspension to achieve three height values of the highest position, the lowest position and the working level.
4. The method for rapidly calibrating the air suspension according to claim 1, which is characterized in that: in the step 2, after the current air suspension height value H 'is read by using calibration software, whether the current height value H' is within the range of H +/-H is judged; if the current H 'is within the range of H +/-H, using calibration software to write H' to the air suspension controller for successful calibration, then controlling the air suspension to ascend, taking out a calibration block, and finishing the whole calibration work;
and if the current H' is not within the range of H +/-H, the calibration software does not allow calibration, and the fault removal is reminded.
5. The method for rapidly calibrating the air suspension according to claim 4, wherein the method comprises the following steps: and if the current H' is not within the range of H +/-H, controlling the suspension to ascend, taking out the calibration cushion block, checking whether the air suspension has part damage or not, has assembly error or not, eliminating related faults, and then carrying out calibration again from the calibration starting step.
6. The method for rapidly calibrating the air suspension according to claim 1, which is characterized in that: after the air suspension is lifted, the distance between the axle tube and the lower beneficial surface of the frame needs to be larger than the height of the calibration block so as to ensure that the calibration block can be put in.
7. The method for rapidly calibrating the air suspension according to claim 1, which is characterized in that: the calibration cushion block comprises a top block, a middle gasket and a base from top to bottom in sequence, and all the parts are assembled and installed through positioning holes and bosses; the kicking block is concave type, and its upper portion is for being used for dodging the rectangle recess of suspension part buffer block, and the bottom is horizontal and vertically respectively opened two diameters and is phi 15mm, and the degree of depth is 10 mm's locating hole, middle gasket is the rectangular block, its upper symmetry be equipped with the kicking block lower part locating hole assorted gasket boss and gasket locating hole, open the lower part of base have be convenient for with the convex recess of rear axle shaft pipe complex, the top dress of convex recess has been inlayed and is prevented to mark the piece landing, guarantees the magnet of the inseparable actuation of base and central siphon, the upper portion of base vertically has two diameters to be the base boss of phi 15mm height 10 mm.
8. The method for rapidly calibrating an air suspension according to claim 7, 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.
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| 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 CN113280715B (en) | 2023-09-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562971A (en) * | 2022-02-18 | 2022-05-31 | 南京依维柯汽车有限公司 | Air suspension initial height self-adaptive system and using 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 |
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| 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 |
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2021
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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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562971A (en) * | 2022-02-18 | 2022-05-31 | 南京依维柯汽车有限公司 | Air suspension initial height self-adaptive system and using method thereof |
| 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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| CN113280715B (en) | 2023-09-05 |
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