CN108443486B - AMT gear shifting position self-adjusting method and device - Google Patents
AMT gear shifting position self-adjusting method and device Download PDFInfo
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- CN108443486B CN108443486B CN201810262254.9A CN201810262254A CN108443486B CN 108443486 B CN108443486 B CN 108443486B CN 201810262254 A CN201810262254 A CN 201810262254A CN 108443486 B CN108443486 B CN 108443486B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
- F16H2061/0087—Adaptive control, e.g. the control parameters adapted by learning
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Abstract
The invention discloses an AMT gear shifting position self-adjusting method and a device, comprising the following steps: shifting a target gear according to the gear shifting control parameters; if the gear shifting to the target gear fails, recording the target gear; acquiring a preset adjusting gear shifting curve corresponding to the target gear, and determining a target adjusting curve; adjusting the gear shifting control parameters according to the target adjustment curve to obtain target gear shifting parameters; and shifting according to the target shifting parameter, and if the shifting fails, adjusting and updating the target shifting parameter according to a target adjustment curve until the shifting is carried out to the target gear. The invention realizes the purpose of improving the reliability of the AMT product based on the automatic adjustment of the gear shifting position.
Description
Technical Field
The invention relates to the technical field of new energy vehicles, in particular to an AMT gear shifting position self-adjusting method and device.
Background
With the rapid development of new energy passenger cars in recent years, the more mainstream technical routes in the domestic market at present are a parallel system, a pure electric system and a parallel-series system. The parallel system mainly adjusts the torque output of the power assembly through an Automated Mechanical Transmission (AMT), so that the system has strong power, the AMT can effectively widen the range of the working rotating speed of the motor, and the time of the high-efficiency working area of the motor is prolonged.
The AMT system mainly depends on the position of a gear selecting and shifting sensor to carry out closed-loop control, but the abrasion of a mechanical part of a gearbox causes deviation between the position on a physical structure and the position set by original software under the same control system parameters, and factors such as the virtual position, the measurement precision, the control precision and the like of the sensor cause the AMT system to be inflexible under the control parameters preset by the software, the gear shifting requirement of a vehicle cannot be well met, and the phenomena of abnormal gear shifting or gear shifting failure and the like occur, so that the AMT product has the problem of poor reliability.
Disclosure of Invention
In view of the above problems, the present invention provides a method and a device for automatically adjusting a shift position of an AMT, which achieves the purpose of improving the reliability of an AMT product based on automatic adjustment of the shift position.
In order to achieve the purpose, the invention provides the following technical scheme:
an AMT shift position self-adjusting method comprising:
shifting a target gear according to the gear shifting control parameters;
if the gear shifting to the target gear fails, recording the target gear;
acquiring a preset adjusting gear shifting curve corresponding to the target gear, and determining a target adjusting curve;
adjusting the gear shifting control parameters according to the target adjustment curve to obtain target gear shifting parameters;
and shifting according to the target shifting parameter, and if the shifting fails, adjusting and updating the target shifting parameter according to a target adjustment curve until the shifting is carried out to the target gear.
Preferably, the method further comprises the following steps:
when gear shifting fails, recording the number of times of gear shifting failure;
and judging whether the gear shifting failure times reach a preset threshold value, if so, stopping adjusting gear shifting control parameters, and generating a fault message.
Preferably, the acquiring a preset adjustment shift curve corresponding to the target gear and determining a target adjustment curve includes:
acquiring a normal gear shifting curve of a vehicle;
generating the preset adjusting gear shifting curve according to the normal gear shifting curve, wherein the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and determining to obtain a target adjustment curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjustment gear shifting curve.
Preferably, the generating the preset adjustment curve according to the normal shift curve includes:
counting gear shifting control parameters and manual adjustment information when gear shifting fails, and generating correction data of a gear shifting curve;
and correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment curve.
Preferably, the method further comprises the following steps:
generating correction data of a gear shifting curve according to road condition information, air pressure and vehicle load;
and correcting the normal gear shifting curve according to the correction data to obtain an adjustment curve, wherein the adjustment curve is used for automatically adjusting the gears of the AMT of the automobile meeting the preset road condition and environment.
An AMT shift position self-adjusting device comprising:
the initial module is used for shifting a target gear according to the gear shifting control parameters;
the recording module is used for recording the target gear if the gear shifting to the target gear fails;
the determining module is used for acquiring a preset adjusting gear shifting curve corresponding to the target gear and determining a target adjusting curve;
the first adjusting module is used for adjusting the gear shifting control parameters according to the target adjusting curve to obtain target gear shifting parameters;
and the second adjusting module is used for shifting according to the target shifting parameter, and if the shifting fails, the target shifting parameter is adjusted and updated according to a target adjusting curve until the shifting is carried out to the target gear.
Optionally, the method further comprises:
the frequency recording module is used for recording the frequency of gear shifting failure when the gear shifting fails;
and the fault message generation module is used for judging whether the gear shifting failure times reach a preset threshold value or not, and if so, stopping adjusting the gear shifting control parameters and generating a fault message.
Optionally, the determining module includes:
the gear shifting control system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a normal gear shifting curve of a vehicle;
the curve generating unit is used for generating the preset adjusting gear shifting curve according to the normal gear shifting curve, and the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and the curve determining unit is used for determining to obtain a target adjusting curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjusting gear shifting curve.
Optionally, the curve generating unit includes:
the counting subunit is used for counting gear shifting control parameters and manual adjustment information when gear shifting fails and generating correction data of a gear shifting curve;
and the corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment curve.
Optionally, the method further comprises:
the correction data generating subunit is used for generating correction data of the gear shifting curve according to the road condition information, the air pressure and the vehicle load;
and the curve corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain an adjustment curve, and the adjustment curve is used for automatically adjusting the gears of the AMT of the automobile meeting the preset road condition and environment.
Compared with the prior art, the invention provides the AMT gear shifting position self-adjusting method and device, when gear shifting fails, gear shifting control parameters are adjusted after a corresponding preset gear shifting curve is determined, and if gear shifting fails again, repeated adjustment is carried out until gear shifting is carried out to a target gear, so that automatic adjustment of the gear shifting position after gear shifting failure is realized, the problem that a vehicle cannot run after gear shifting failure after an AMT vehicle runs for a long time can be avoided, and the reliability of an AMT product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flowchart of an AMT shift position self-adjusting method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an adjustment curve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an AMT shift position self-adjusting device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first" and "second," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not set forth for a listed step or element but may include steps or elements not listed.
In an embodiment of the present invention, a method for self-adjusting an AMT shift position is provided, and referring to fig. 1, may include:
s11, shifting a target gear according to the gear shifting control parameters;
s12, if the gear shifting to the target gear fails, recording the target gear;
the automatic Transmission Control Unit (TCU) realizes the control of the AMT, and the signal fed back by the sensor is in the target set position range band through the closed-loop control of the sensor position signal, thereby achieving the purpose of control. When the position signal fed back by the sensor is in the range band, but the actual shift fork physical position does not reach the specified position, the phenomena of abnormal gear shifting noise or gear shifting failure and the like can occur.
And the TCU normally judges gear shifting according to parameters such as position, time and the like, and records the target gear when the target gear fails to perform gear shifting once.
S13, acquiring a preset adjusting gear shifting curve corresponding to the target gear, and determining a target adjusting curve;
the embodiment of the invention also provides a method for determining a target adjustment curve, which comprises the following steps:
acquiring a normal gear shifting curve of a vehicle;
generating the preset adjusting gear shifting curve according to the normal gear shifting curve, wherein the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and determining to obtain a target adjustment curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjustment gear shifting curve.
For example, when a shift failure occurs, the shift force is usually increased, but the wear of the mechanism cannot be measured or measured accurately, so that an excessive shift force may cause a phenomenon such as position overshoot. When the gear shifting force is increased to the limit, gear shifting failure is still possible to occur, and at the moment, the clamping stagnation phenomenon can be caused for the mechanism, so that the one-time gear shifting success rate, the gear shifting quality, the driving feeling and the like are influenced. As shown in fig. 2, if the normal shift curve is (1), after the vehicle runs for a period of time, the shift curve may be (2) or (3), and if a normal shift is performed according to the curve (1), the shift may fail, so that a shift adjustment needs to be performed according to the adjustment curve, that is, (2) or (3). In fig. 2, curve (2) indicates that the shift stuck phenomenon occurs after the shift force is increased; curve (3) presets the TCU for improper control parameters resulting in overshoot.
The specific method for generating the preset adjustment curve may include:
counting gear shifting control parameters and manual adjustment information when gear shifting fails, and generating correction data of a gear shifting curve;
and correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment curve.
And carrying out statistical analysis according to the gear shifting control parameters and the manual adjustment information when the vehicle fails to shift gears, finding out corresponding correction data, and then correcting the normal curve to obtain a preset adjustment curve.
Accordingly, for some vehicles, a shift failure may not occur under normal road conditions, but a shift failure may occur under some special road conditions, such as an uphill road section, a road section with a higher altitude or a bumpy road condition, or a shift failure may also occur under some severe weather conditions, another correction method provided by the embodiment of the present invention may be adopted, including:
generating correction data of a gear shifting curve according to road condition information, air pressure and vehicle load;
and correcting the normal gear shifting curve according to the correction data to obtain an adjustment curve, wherein the adjustment curve is used for automatically adjusting the gears of the AMT of the automobile meeting the preset road condition and environment.
In this correction process, correction can be performed by combining information of the engine temperature, the transmission oil temperature, and the like.
S14, adjusting the gear shifting control parameters according to the target adjustment curve to obtain target gear shifting parameters;
and S15, shifting gears according to the target gear shifting parameters, and if the gear shifting fails, adjusting and updating the target gear shifting parameters according to a target adjustment curve until the gears are shifted to the target gears.
And automatically adjusting TCU control parameters according to the target adjustment curve, then shifting again, and finally completing shifting through continuously online self-adjusting parameters. The process is a process of periodically and repeatedly adjusting, and if the gear shifting still fails after the curve adjustment is passed, the adjustment curve is determined again, and then the control parameters are determined to re-shift the gear.
However, in the case of multiple gear shift failures, the process is not an infinite number of cycles, and a stop threshold needs to be set, and the stop threshold may be the number of gear shift failures, the number of parameter adjustments, or the adjustment time. Taking the stop threshold as the gear shifting failure times as an example, when the gear shifting fails, the gear shifting failure times are recorded, whether the gear shifting failure times reach a preset threshold or not is judged, namely the stop threshold, if so, the gear shifting control parameters are stopped to be adjusted, namely the adjustment curve is not determined again, a fault message is generated, and a corresponding fault is reported. The fault message may be sent to a predetermined designated device.
The invention provides an AMT gear shifting position self-adjusting method, which is characterized in that when gear shifting fails, gear shifting control parameters are adjusted after a corresponding preset gear shifting curve is determined, and if gear shifting fails again, repeated adjustment is carried out until gear shifting is carried out to a target gear, so that automatic adjustment of the gear shifting position after the gear shifting fails is realized, the problem that a vehicle cannot run after the gear shifting fails after an AMT vehicle runs for a long time can be avoided, and the reliability of AMT products is improved.
An embodiment of the present invention further provides an AMT shift position self-adjusting device, referring to fig. 3, including:
the initial module 10 is used for shifting a target gear according to the gear shifting control parameters;
the recording module 20 is configured to record the target gear if the gear shift to the target gear fails;
a determining module 30, configured to obtain a preset adjustment shift curve corresponding to the target gear, and determine a target adjustment curve;
the first adjusting module 40 is configured to adjust the shift control parameter according to the target adjustment curve to obtain a target shift parameter;
and the second adjusting module 50 is configured to shift gears according to the target gear shift parameter, and if the gear shift fails, adjust and update the target gear shift parameter according to a target adjustment curve until the gear shift is performed to the target gear.
Optionally, the method further comprises:
the frequency recording module is used for recording the frequency of gear shifting failure when the gear shifting fails;
and the fault message generation module is used for judging whether the gear shifting failure times reach a preset threshold value or not, and if so, stopping adjusting the gear shifting control parameters and generating a fault message.
Optionally, the determining module includes:
the gear shifting control system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a normal gear shifting curve of a vehicle;
the curve generating unit is used for generating the preset adjusting gear shifting curve according to the normal gear shifting curve, and the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and the curve determining unit is used for determining to obtain a target adjusting curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjusting gear shifting curve.
Optionally, the curve generating unit includes:
the counting subunit is used for counting gear shifting control parameters and manual adjustment information when gear shifting fails and generating correction data of a gear shifting curve;
and the corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment curve.
Optionally, the method further comprises:
the correction data generating subunit is used for generating correction data of the gear shifting curve according to the road condition information, the air pressure and the vehicle load;
and the curve corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain an adjustment curve, and the adjustment curve is used for automatically adjusting the gears of the AMT of the automobile meeting the preset road condition and environment.
The invention provides an AMT gear shifting position self-adjusting device, which is characterized in that when gear shifting fails, gear shifting control parameters are adjusted after a corresponding preset gear shifting curve is determined, and if gear shifting fails again, the gear shifting control parameters are adjusted repeatedly until the gear shifting is shifted to a target gear, so that the automatic adjustment of the gear shifting position after the gear shifting fails is realized, the problem that a vehicle cannot run after the gear shifting fails after an AMT vehicle runs for a long time can be avoided, and the reliability of AMT products is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An AMT shift position self-adjusting method, comprising:
shifting a target gear according to the gear shifting control parameters;
if the gear shifting to the target gear fails, recording the target gear;
acquiring a preset adjusting gear shifting curve corresponding to the target gear, and determining a target adjusting curve;
adjusting the gear shifting control parameters according to the target adjustment curve to obtain target gear shifting parameters;
shifting according to the target shifting parameter, and if the shifting fails, adjusting and updating the target shifting parameter according to a target adjustment curve until the shifting is carried out to the target gear;
the acquiring a preset adjustment gear shifting curve corresponding to the target gear and determining a target adjustment curve include:
acquiring a normal gear shifting curve of a vehicle;
generating the preset adjusting gear shifting curve according to the normal gear shifting curve, wherein the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and determining to obtain a target adjustment curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjustment gear shifting curve.
2. The method of claim 1, further comprising:
when gear shifting fails, recording the number of times of gear shifting failure;
and judging whether the gear shifting failure number value reaches a preset threshold value, if so, stopping adjusting gear shifting control parameters, and generating a fault message.
3. The method of claim 1, wherein the generating the preset adjusted shift profile from the normal shift profile comprises:
counting gear shifting control parameters and manual adjustment information when gear shifting fails, and generating correction data of a gear shifting curve;
and correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment gear shifting curve.
4. The method of claim 3, further comprising:
generating correction data of a gear shifting curve according to road condition information, air pressure and vehicle load;
and correcting the normal gear shifting curve according to the correction data to obtain the preset adjusting gear shifting curve, wherein the preset adjusting gear shifting curve is used for automatically adjusting the gears of the AMT of the automobile meeting preset road conditions and environments.
5. An AMT shift position self-adjusting device, comprising:
the initial module is used for shifting a target gear according to the gear shifting control parameters;
the recording module is used for recording the target gear if the gear shifting to the target gear fails;
the determining module is used for acquiring a preset adjusting gear shifting curve corresponding to the target gear and determining a target adjusting curve;
the first adjusting module is used for adjusting the gear shifting control parameters according to the target adjusting curve to obtain target gear shifting parameters;
the second adjusting module is used for shifting according to the target shifting parameter, and if the shifting fails, the target shifting parameter is adjusted and updated according to a target adjusting curve until the shifting is carried out to the target gear;
the determining module comprises:
the gear shifting control system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a normal gear shifting curve of a vehicle;
the curve generating unit is used for generating the preset adjusting gear shifting curve according to the normal gear shifting curve, and the preset adjusting gear shifting curve comprises a gear shifting clamping stagnation adjusting curve and an overshoot adjusting curve;
and the curve determining unit is used for determining to obtain a target adjusting curve according to the gear shifting control parameter, the AMT wear parameter and the preset adjusting gear shifting curve.
6. The apparatus of claim 5, further comprising:
the frequency recording module is used for recording the frequency of gear shifting failure when the gear shifting fails;
and the fault message generation module is used for judging whether the gear shifting failure number value reaches a preset threshold value, and if so, stopping adjusting the gear shifting control parameters and generating a fault message.
7. The apparatus of claim 5, wherein the curve generating unit comprises:
the counting subunit is used for counting gear shifting control parameters and manual adjustment information when gear shifting fails and generating correction data of a gear shifting curve;
and the corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain the preset adjustment gear shifting curve.
8. The apparatus of claim 7, further comprising:
the correction data generating subunit is used for generating correction data of the gear shifting curve according to the road condition information, the air pressure and the vehicle load;
and the curve corrector subunit is used for correcting the normal gear shifting curve according to the correction data to obtain the preset adjusting gear shifting curve, and the preset adjusting gear shifting curve is used for automatically adjusting the gears of the AMT of the automobile meeting the preset road condition and environment.
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| CN109372984B (en) * | 2018-12-14 | 2020-08-21 | 潍柴动力股份有限公司 | Method and device for adjusting execution mechanism |
| CN110281860B (en) * | 2019-06-29 | 2021-11-19 | 潍柴动力股份有限公司 | Control method and system of gear shifting motor |
| CN110259940B (en) * | 2019-06-29 | 2020-12-22 | 潍柴动力股份有限公司 | Gear shifting rotating speed calibration method and device |
| CN115614466B (en) * | 2022-12-14 | 2023-04-18 | 潍柴动力股份有限公司 | Pneumatic AMT gear shifting correction method |
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