CN103770584A - Automatic tire inflation detection all-in-one machine and method for automatically detecting tire by utilizing all-in-one machine - Google Patents
Automatic tire inflation detection all-in-one machine and method for automatically detecting tire by utilizing all-in-one machine Download PDFInfo
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- CN103770584A CN103770584A CN201410064060.XA CN201410064060A CN103770584A CN 103770584 A CN103770584 A CN 103770584A CN 201410064060 A CN201410064060 A CN 201410064060A CN 103770584 A CN103770584 A CN 103770584A
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Abstract
The invention discloses an automatic tire inflation detection all-in-one machine and a method for automatically detecting a tire by utilizing the all-in-one machine. The automatic tire inflation detection all-in-one machine comprises a single-chip microcomputer, an air pressure sensor, an analogue/digital conversion chip, a triggering shift register, a first nixie tube, a second nixie tube, a voltage output digital/analogue converter and a proportional electromagnetic valve, wherein the single-chip microcomputer and the analogue/digital conversion chip are connected with the single-chip microcomputer, the triggering shift register and the air pressure sensor respectively; the triggering shift register is connected with the first and second nixie tubes respectively; the digital/analogue converter is connected with the single-chip microcomputer and the proportional electromagnetic valve respectively; the air pressure sensor is connected with the tire to measure the actual value of air pressure in the tire. According to the automatic tire inflation detection all-in-one machine, the air pressure can be automatically detected, maintenance staff do not need to wait, data can be accurately acquired, changes of the air pressure are clear at a glance, the inflation and deflation control accuracy is improved, impact interference in inflation and deflation processes is eliminated, and the detection accuracy is effectively improved.
Description
Technical field
The present invention relates to all-in-one, the automatic tyre air inflation that particularly relates to vehicle body detects all-in-one.
The invention still further relates to tyre inflating method of inspection, particularly relate to and utilize above-mentioned automatic tyre air inflation detection all-in-one to carry out the method for automatic detecting wheel tire.
Background technology
The charge and discharge mechanism of qi of current most automobile manufacturing enterprise when to entrucking tyre inflating is not mostly automatic; Can not meet different automobile types the air pressure of tire is switched to requirement.Needing employee's following of whole journey observation air-pressure gauge not leave exists personnel to wait for waste.Employee reads while charging and discharging mechanism of qi dial scale value in fatigue; Can cause the reading error of 10～20pa.The low tire pressure value of production efficiency can not be guaranteed.Left and right wheels air pressure value offset issue increases follow-up four-wheel location and adjusts work difficulty.Traditional tire inflation unit can not adapt to the requirement of modern production scale.On market, existing automatic inflating apparatus expensive bad adaptability, need transform production scene; Transformation production scene cost is high, the cycle is long, and gas replenishment process precision is not high, error ratio is larger; In the face of the impulsive disturbance in gas replenishment process does not have interval measuring ability.
Summary of the invention
The present invention completes in order to solve deficiency of the prior art, the object of this invention is to provide automatic detection, eliminate maintainer wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, the automatic tyre air inflation that effectively improves accuracy of detection detects all-in-one.
Automatic tyre air inflation of the present invention detects all-in-one, comprise micro controller system, baroceptor, mould/number conversion chip, trigger-type shift register, the first charactron, the second charactron, Voltage-output D/A converter and proportion magnetic valve, described micro controller system and described mould/number conversion chip respectively with micro controller system, trigger-type shift register is connected with described baroceptor, described trigger-type shift register is connected with the first charactron and the second charactron respectively, described D/A converter is connected with micro controller system and described proportion magnetic valve respectively, described baroceptor is connected with tire measures tire internal gas pressure actual value.
Automatic tyre air inflation of the present invention detects all-in-one:
Described micro controller system is AT89S52.
Described mould/number conversion chip is 8 bit resolutions, binary channel mould/number conversion chip.
Described mould/number conversion chip is ADC0832.
Described trigger-type shift register is that 8 bit strings enter and go out shift register.
Described trigger-type shift register is 74HC164.
Described Voltage-output D/A converter is 12 Voltage-output D/A converters.
Described Voltage-output D/A converter is TLV5616.
Automatic tyre air inflation of the present invention detects all-in-one, it comprises micro controller system, baroceptor, mould/number conversion chip, trigger-type shift register, the first charactron, the second charactron, Voltage-output D/A converter and proportion magnetic valve, described micro controller system and described mould/number conversion chip respectively with micro controller system, trigger-type shift register is connected with described baroceptor, described trigger-type shift register is connected with the first charactron and the second charactron respectively, described D/A converter is connected with micro controller system and described proportion magnetic valve respectively, described baroceptor is connected with tire measures tire internal gas pressure actual value.Like this, in the time of operation, baroceptor detects actual pressure value in tire in real time, the atmospheric pressure value that mould/number conversion chip collects baroceptor carries out analogue to digital conversion also by extremely connected micro controller system of this data transmission, micro controller system is received data message, by predefined atmospheric pressure value with detect that actual atmospheric pressure value transfers to respectively trigger-type shift register, trigger-type shift register is exported these two atmospheric pressure values respectively and is presented on the first charactron and the second charactron, show respectively predeterminated voltage value and actual voltage value, make the numerical value of outer bound pair atmospheric pressure value very clear.Micro controller system compares default atmospheric pressure value and actual pressure value simultaneously, and according to result and gas circulation relatively, indicator signal is sent to Voltage-output D/A converter, Voltage-output D/A converter is carried out digital to analogy conversion to indicator signal, and the aperture of control ratio electromagnetic valve in inflated condition or deflated state and valve, and then the air-flow flux of controlling inflation or exitting, in the time that default atmospheric pressure value is greater than actual pressure value, it is inflated condition, when default atmospheric pressure value is venting during lower than actual pressure value, in the time that both are equal, stop proportion magnetic valve operation, after the certain hour of interval, again detect and contrast, until identical after between the two between default.The advantage having so is in terms of existing technologies to provide automatic detection, eliminates maintainer wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, effectively improves accuracy of detection.
Another object of the present invention is to provide a kind of method of utilizing above-mentioned automatic tyre air inflation to detect all-in-one automatic detecting wheel tire, the method provides automatic detection, eliminates maintainer wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, effectively improves accuracy of detection.
The method of utilizing above-mentioned automatic tyre air inflation to detect all-in-one automatic detecting wheel tire of the present invention, comprises the following steps:
A. baroceptor is connected with motor tire, starts all-in-one, tire internal gas pressure value is carried out to current sample;
B. the air pressure numerical value collecting in A step is carried out analogue to digital conversion by mould/number conversion chip, and send the data after conversion to micro controller system;
C. micro controller system is by the atmospheric pressure value contrast of the magnitude of voltage after conversion and internal preset, micro controller system sends display to trigger-type shift register by data-signal, and described trigger-type shift register drives the first charactron and the second charactron to show respectively default atmospheric pressure value and the tire internal air pressure value detecting;
D. micro controller system is sent to Voltage-output D/A converter according to comparing result and piping flow by indicator signal simultaneously;
E. described Voltage-output D/A converter is according to the valve opening degree of proportion magnetic valve described in the indicator signal control of receiving, and then control ratio electromagnetic valve inflation or venting, and the airshed of proportion magnetic valve described in difference control between the atmospheric pressure value detecting according to reality and default atmospheric pressure value;
F. when micro controller system contrast default atmospheric pressure value and detection atmospheric pressure value equate time, micro controller system by stop inflation or venting indicator signal send to described Voltage-output D/A converter, this Voltage-output D/A converter control ratio electromagnetic valve quits work;
G. after the spacing convention time, baroceptor detects the atmospheric pressure value in motor tire again, and repeat A step, B step and C step, in the time that the atmospheric pressure value of predetermined atmospheric pressure value and detection equates, stop all-in-one operation, in the time that the atmospheric pressure value of predetermined value and detection is not identical, repeat A-F step, until default atmospheric pressure value is identical with actual detection atmospheric pressure value after the schedule time of interval.
The advantage that the method for utilizing above-mentioned automatic tyre air inflation to detect all-in-one automatic detecting wheel tire of implementing according to above-mentioned steps of the present invention has is in terms of existing technologies to provide automatic detection, eliminates maintainer's wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, effectively improves accuracy of detection.
Accompanying drawing explanation
Fig. 1 automatic tyre air inflation of the present invention detects all-in-one machine structure block diagram.
Fig. 2 automatic tyre air inflation of the present invention detects all-in-one method of inspection diagram of circuit.
Fig. 3 automatic tyre air inflation of the present invention detects the single chip circuit figure of all-in-one.
Fig. 4 automatic tyre air inflation of the present invention detects mould/number conversion chip circuit figure of all-in-one.
The trigger-type shift register of Fig. 5 automatic tyre air inflation detection of the present invention all-in-one drives the circuit diagram of the first charactron and the second charactron.
Fig. 6 automatic tyre air inflation of the present invention detects the circuit diagram of the Voltage-output D/A converter driving proportion magnetic valve electric discharge of all-in-one.
Fig. 7 automatic tyre air inflation of the present invention detects the circuit diagram of the Voltage-output D/A converter driving proportion magnetic valve charging of all-in-one.
The specific embodiment
Fig. 1 to Fig. 7 below in conjunction with accompanying drawing detects all-in-one and utilizes the method for its automatic detecting wheel tire to be described in further detail automatic tyre air inflation of the present invention.
Automatic tyre air inflation of the present invention detects all-in-one, please refer to Fig. 1 to Fig. 7, comprise micro controller system, baroceptor, mould/number conversion chip, trigger-type shift register, the first charactron, the second charactron, Voltage-output D/A converter and proportion magnetic valve, described micro controller system and described mould/number conversion chip respectively with micro controller system, trigger-type shift register is connected with described baroceptor, described trigger-type shift register is connected with the first charactron and the second charactron respectively, described D/A converter is connected with micro controller system and described proportion magnetic valve respectively, described baroceptor is connected with tire measures tire internal gas pressure actual value.Like this, in the time of operation, baroceptor detects actual pressure value in tire in real time, the atmospheric pressure value that mould/number conversion chip collects baroceptor carries out analogue to digital conversion also by extremely connected micro controller system of this data transmission, micro controller system is received data message, by predefined atmospheric pressure value with detect that actual atmospheric pressure value transfers to respectively trigger-type shift register, trigger-type shift register is exported these two atmospheric pressure values respectively and is presented on the first charactron and the second charactron, show respectively predeterminated voltage value and actual voltage value, make the numerical value of outer bound pair atmospheric pressure value very clear.Micro controller system compares default atmospheric pressure value and actual pressure value simultaneously, and according to result and gas circulation relatively, indicator signal is sent to Voltage-output D/A converter, Voltage-output D/A converter is carried out digital to analogy conversion to indicator signal, and the aperture of control ratio electromagnetic valve in inflated condition or deflated state and valve, and then the air-flow flux of controlling inflation or exitting, in the time that default atmospheric pressure value is greater than actual pressure value, it is inflated condition, when default atmospheric pressure value is venting during lower than actual pressure value, in the time that both are equal, stop proportion magnetic valve operation, after the certain hour of interval, again detect and contrast, until identical after between the two between default.The advantage having so is in terms of existing technologies to provide automatic detection, eliminates maintainer wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, effectively improves accuracy of detection.Schedule time comparative optimization be 3 seconds.
Process and existing personnel's ready visual contrast:
(1) when existing installation is inflated, employee must can not leave by hand-held air-pressure gauge; Employee's processing ease in the time of fatigue produces error and causes left and right wheels air pressure inconsistent, causes the sideslip problem of exercising.With this technology guarantee tire pressure value accurately simultaneously employee without following of whole journey.Employee can utilize these 40 seconds (tire is economized 8 seconds × 5) time to go the further creation of value.East is total: A line: 25855 × 37.1(JPH)/3600 × 40(second) × 3(order of classes or grades at school)=31974(unit); B line: 25855 × 26.7(JPH)/3600 × 40(second) × 3(order of classes or grades at school)=23011(unit); C line: 25855 × 23.2(JPH)/3600 × 40(second) × 3(order of classes or grades at school)=19994(unit).West is total: 25855 × 40(JPH)/3600 × 40(second) × 3(order of classes or grades at school) × 3(manufacturing line)=103(unit)
Conversion total benefit saves time: 178399 yuan
(2) eliminate and reprocess waste:
Can eliminate and exercise sideslip (44/month) and cause and reprocess waste.
Waste is reprocessed in elimination: 44(reprocesses consuming time) × 12(the month) × 13.68(per capita salary) × 2(number)=14446(unit) waste saving benefit: 14446 yuan.
Automatic tyre air inflation of the present invention detects all-in-one, please refer to Fig. 1 to Fig. 6, can be specifically that described micro controller system is AT89S52 on the basis of previous technique scheme.AT89S family chip is the ISP(ISP that can carry out with downloading wire online programming), use simple HC244 circuit, just can carry out the programming to micro controller system by the program above computer, be need not remove above being put into heavy Programmer to write slice, thin piece.AT89C family chip does not have this function.So use AT89S family chip in design.AT89S52 is a kind of low-power consumption, high-performance CMOS 8 8-digit microcontrollers, has 8K at system programmable Flash memory device.Use the manufacture of Atmel company high-density nonvolatile memory technology, completely compatible with the instruction of industrial 80C51 product and pin.Flash on chip allows program store at system programmable, is also suitable for conventional programming device.AT89S52 has 2 layers of interrupt nesting of 5 interrupt priority levels to interrupt, 2 16 programmer timing counters, 2 full duplex serial communication ports, house dog (WDT) circuit, on-chip clock oscillator; AT89S52 and AT89S51 chip price are similar; But many one times than AT89S51 available resources of AT89S52.So use AT89S52 chip in design.In addition, described mould/number conversion chip is 8 bit resolutions, binary channel mould/number conversion chip.Further preferred technical scheme is that described mould/number conversion chip is ADC0832.ADC0831 and ADC0832 are 8 bit serial I/O A/D converters.ADC0831 is single channel, has input Vin+ and Vin-, has reference power supply REF, only has serial data output DO.ADC0832 is binary channel, has channel C H0 and CH1, and VREF (Voltage Reference) REF meets VCC, has serial data input DI and serial data output DO.So use ADC0832 chip in design.Its advantage is that volume is little, compatibility, and cost performance is high.Can also be that described trigger-type shift register is that 8 bit strings enter and go out shift register.Can be specifically that described trigger-type shift register is 74HC164.74HC164 (25mA) is less than the drive current of 74HC595 (35mA); The reset of 74HC595 is synchronous, and the reset of 74HC164 is asynchronous, so the reset of 74HC164 is simpler.So use 74HC164 chip in design.74HC164 is high-speed silicon door cmos device, with the pin compatibility of low-power consumption Schottky type TTL (LSTTL) device.74HC164,74HCT164 are 8 edging trigger formula shift registers, serial input data, then parallel output.Data are by one of two input ends (DSA or DSB) serial input; Arbitrary input end can be used as high level Enable Pin, controls the data input of another input end.Can also be that described Voltage-output D/A converter is 12 Voltage-output D/A converters.Being specially described Voltage-output D/A converter is TLV5616.TLV5616 is one 12 Voltage-output D and A converters (DAC), with 4 line serial interfaces flexibly, and can seamless link TMS320, SPI, QSPI and Microwire serial port.Digital power and analog power are powered respectively, voltage range 2.7～5.5V.Output buffering is 2 times of gain rail-to-rail out amplifiers, and out amplifier is that AB class is to improve stability and to reduce setting time.Rail-to-rail exports and closes the very suitable single supply of electric mode, powered battery application.Can optimize setting time and merit ratio by control word.ADC0832 is 8 bit resolution A/D conversion chips, and its best result distinguishes and can reach 256 grades, and its internal electric source input is multiplexing with VREF (Voltage Reference), and the analog voltage of chip is inputted between 0～5V.The simulate data that baroceptor is collected is carried out accurate analogue to digital conversion and is submitted micro controller system to.Due to ADC0832 chip DO end and DI end in the time communicate by letter not simultaneously effectively and with the interface of micro controller system be two-way, so DO and DI can be connected in parallel in a data lines and use in design when circuit layout, we have only used a CH0 and have changed mouth.Therefore the data of DO/DI two-port should be " 1 ", " 0 ".Use respectively P2.6 and the control of P2.7 mouth.The data handling procedure of A/D conversion is the method with twice Data Comparison of sampling.Data acquisition is for the first time the mode that uses forward storage, be exactly a high position at front low level rear.The method of oppositely storing for the second time.Low level is front, high-order rear, so in the time doing Data Comparison, must be data for the second time conversely.When twice numerical value recording is when being the same, return to numerical value, again test if different.So just guarantee the accuracy of the value recording.
Automatic tyre air inflation described in utilization of the present invention detects the method for all-in-one automatic detecting wheel tire, please refer to Fig. 1 to Fig. 7, comprises the following steps:
A. baroceptor is connected with motor tire, starts all-in-one, tire internal gas pressure value is carried out to current sample;
B. the air pressure numerical value collecting in A step is carried out analogue to digital conversion by mould/number conversion chip, and send the data after conversion to micro controller system;
C. micro controller system is by the atmospheric pressure value contrast of the magnitude of voltage after conversion and internal preset, micro controller system sends display to trigger-type shift register by data-signal, and described trigger-type shift register drives the first charactron and the second charactron to show respectively default atmospheric pressure value and the tire internal air pressure value detecting;
D. micro controller system is sent to Voltage-output D/A converter according to comparing result and piping flow by indicator signal simultaneously;
E. described Voltage-output D/A converter is according to the valve opening degree of proportion magnetic valve described in the indicator signal control of receiving, and then control ratio electromagnetic valve inflation or venting, and the airshed of proportion magnetic valve described in difference control between the atmospheric pressure value detecting according to reality and default atmospheric pressure value;
F. when micro controller system contrast default atmospheric pressure value and detection atmospheric pressure value equate time, micro controller system by stop inflation or venting indicator signal send to described Voltage-output D/A converter, this Voltage-output D/A converter control ratio electromagnetic valve quits work;
G. after the spacing convention time, baroceptor detects the atmospheric pressure value in motor tire again, and repeat A step, B step and C step, in the time that the atmospheric pressure value of predetermined atmospheric pressure value and detection equates, stop all-in-one operation, in the time that the atmospheric pressure value of predetermined value and detection is not identical, repeat A-F step, until default atmospheric pressure value is identical with actual detection atmospheric pressure value after the schedule time of interval.
The advantage that the method for utilizing above-mentioned automatic tyre air inflation to detect all-in-one automatic detecting wheel tire of implementing according to above-mentioned steps of the present invention has is in terms of existing technologies to provide automatic detection, eliminates maintainer's wait time, image data is accurate, pressure variation is very clear, improve inflation/deflation control accuracy and eliminate the impulsive disturbance in inflation/deflation process, effectively improves accuracy of detection.
Of the present inventionly utilize method that above-mentioned automatic tyre air inflation detects all-in-one automatic detecting wheel tire preferably: described E step is in the time that the difference between the atmospheric pressure value of actual detection and default atmospheric pressure value is 10%, described Voltage-output D/A converter reduces according to the valve opening of proportion magnetic valve described in the indicator signal control of receiving, and then controls the airshed of described proportion magnetic valve.Like this, micro controller system reduces the area of passage by Voltage-output D/A converter control ratio electromagnetic valve and slows down airshed and improve the precision of air pressure adjustment.
Above-mentionedly only several specific embodiments in the present invention are illustrated; but can not serve as protection scope of the present invention; every equivalence variation of having done according to the design spirit in the present invention or modification or equal proportion zoom in or out etc., all should think and fall into protection scope of the present invention.
Claims (10)
1. automatic tyre air inflation detects all-in-one, it is characterized in that: comprise micro controller system, baroceptor, mould/number conversion chip, trigger-type shift register, the first charactron, the second charactron, Voltage-output D/A converter and proportion magnetic valve, described micro controller system and described mould/number conversion chip respectively with micro controller system, trigger-type shift register is connected with described baroceptor, described trigger-type shift register is connected with the first charactron and the second charactron respectively, described D/A converter is connected with micro controller system and described proportion magnetic valve respectively, described baroceptor is connected with tire measures tire internal gas pressure actual value.
2. automatic tyre air inflation according to claim 1 detects all-in-one, it is characterized in that: described micro controller system is AT89S52.
3. automatic tyre air inflation according to claim 1 detects all-in-one, it is characterized in that: described mould/number conversion chip is 8 bit resolutions, binary channel mould/number conversion chip.
4. automatic tyre air inflation according to claim 3 detects all-in-one, it is characterized in that: described mould/number conversion chip is ADC0832.
5. automatic tyre air inflation according to claim 1 detects all-in-one, it is characterized in that: described trigger-type shift register is that 8 bit strings enter and go out shift register.
6. automatic tyre air inflation according to claim 5 detects all-in-one, it is characterized in that: described trigger-type shift register is 74HC164.
7. automatic tyre air inflation according to claim 1 detects all-in-one, it is characterized in that: described Voltage-output D/A converter is 12 Voltage-output D/A converters.
8. automatic tyre air inflation according to claim 7 detects all-in-one, it is characterized in that: described Voltage-output D/A converter is TLV5616.
9. utilize automatic tyre air inflation described in any claim of claim 1 to 8 to detect the method for all-in-one automatic detecting wheel tire, it is characterized in that: comprise the following steps:
A. baroceptor is connected with motor tire, starts all-in-one, tire internal gas pressure value is carried out to current sample;
B. the air pressure numerical value collecting in A step is carried out analogue to digital conversion by mould/number conversion chip, and send the data after conversion to micro controller system;
C. micro controller system is by the atmospheric pressure value contrast of the magnitude of voltage after conversion and internal preset, micro controller system sends display to trigger-type shift register by data-signal, and described trigger-type shift register drives the first charactron and the second charactron to show respectively default atmospheric pressure value and the tire internal air pressure value detecting;
D. micro controller system is sent to Voltage-output D/A converter according to comparing result and piping flow by indicator signal simultaneously;
E. described Voltage-output D/A converter is according to the valve opening degree of proportion magnetic valve described in the indicator signal control of receiving, and then control ratio electromagnetic valve inflation or venting, and the airshed of proportion magnetic valve described in difference control between the atmospheric pressure value detecting according to reality and default atmospheric pressure value;
F. when micro controller system contrast default atmospheric pressure value and detection atmospheric pressure value equate time, micro controller system by stop inflation or venting indicator signal send to described Voltage-output D/A converter, this Voltage-output D/A converter control ratio electromagnetic valve quits work;
G. after the spacing convention time, baroceptor detects the atmospheric pressure value in motor tire again, and repeat A step, B step and C step, in the time that the atmospheric pressure value of predetermined atmospheric pressure value and detection equates, stop all-in-one operation, in the time that the atmospheric pressure value of predetermined value and detection is not identical, repeat A-F step, until default atmospheric pressure value is identical with actual detection atmospheric pressure value after the schedule time of interval.
10. the method for utilizing automatic tyre air inflation to detect all-in-one automatic detecting wheel tire according to claim 9, it is characterized in that: described E step is in the time that the difference between the actual atmospheric pressure value detecting and default atmospheric pressure value is 10%, described Voltage-output D/A converter reduces according to the valve opening of proportion magnetic valve described in the indicator signal control of receiving, and then controls the airshed of described proportion magnetic valve.
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| CN201410064060.XA CN103770584A (en) | 2014-02-25 | 2014-02-25 | Automatic tire inflation detection all-in-one machine and method for automatically detecting tire by utilizing all-in-one machine |
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| CN109470432A (en) * | 2018-12-24 | 2019-03-15 | 珠海西格膜生物技术有限公司 | A kind of detector for tightness and its application method |
| CN112339508A (en) * | 2020-10-29 | 2021-02-09 | 上汽通用五菱汽车股份有限公司 | Rolling radius compensation method and device based on yaw rate and storage medium |
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| CN112339508A (en) * | 2020-10-29 | 2021-02-09 | 上汽通用五菱汽车股份有限公司 | Rolling radius compensation method and device based on yaw rate and storage medium |
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Application publication date: 20140507 |
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