CN117704061A - Gear shifting control method and system for automobile AMT gearbox - Google Patents
Gear shifting control method and system for automobile AMT gearbox Download PDFInfo
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Abstract
The invention provides a gear shifting control method and a gear shifting control system for an automobile AMT gearbox, which relate to the technical field of driving and comprise the following steps: the method comprises the steps of exchanging automobile positioning information to obtain road gradient information and road surface type information; loading rainfall information, and carrying out safe vehicle speed assessment by combining road gradient information and road surface type information to generate a safe vehicle speed threshold value; dividing the vehicle according to a safe vehicle speed threshold value based on a gear speedometer to generate a first gear dividing result; receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table, and generating a second gear dividing result; and after the gear judgment is carried out according to the first gear dividing result and the second gear dividing result, activating an AMT gearbox control component, and carrying out speed change control on the driving speed of the vehicle according to the safe vehicle speed threshold. The intelligent driving vehicle speed control method and the intelligent driving vehicle speed control system solve the technical problem that the existing intelligent driving vehicle speed control flexibility is poor due to the interference influence of special weather and special road conditions in the prior art.
Description
Technical Field
The invention relates to the technical field of driving, in particular to a gear shifting control method and system for an automobile AMT gearbox.
Background
The full name of the AMT gearbox is a mechanical automatic gearbox. The AMT gearbox is based on a manual gearbox and is provided with a set of electronic control element on a gear control mechanism so as to achieve the purpose of automatically switching gear. The internal structure is also a manual gearbox, and an automatic gear shifting mechanism is added based on the manual gearbox structure, so that the cost is not much increased compared with that of the manual gearbox.
Intelligent driving is a part of an intelligent traffic system, and automobiles can be connected with surrounding environments such as road information, traffic signals, other vehicles and the like into a whole through the technology of internet of vehicles, so that a traffic system for efficient operation of people, vehicles and roads is formed. In the intelligent automobile, various sensors replace eyes and ears of people to sense the surrounding conditions of the automobile.
However, the existing intelligent driving lacks flexible vehicle speed safety control, and particularly has poor vehicle speed control effect in typhoon and rainy weather and under special road conditions (wet road sections, unsmooth drainage road sections and the like).
In the prior art, the technical problem of poor control flexibility of the existing intelligent driving speed is caused by the interference of special weather and special road conditions.
Disclosure of Invention
The application provides a gear shifting control method and a gear shifting control system for an automobile AMT gearbox, which are used for solving the technical problem that the existing intelligent driving speed control flexibility is poor due to the interference influence of special weather and special road conditions in the prior art. In view of the above, the present application provides a shift control method and system for an automotive AMT gearbox.
In a first aspect of the present application, a shift control method for an AMT gearbox of an automobile is provided, comprising: the method comprises the steps of exchanging automobile positioning information to obtain traveling road basic information, wherein the traveling road basic information comprises road gradient information and road surface type information; loading rainfall information, and carrying out safe vehicle speed assessment by combining the road gradient information and the road surface type information to generate a safe vehicle speed threshold value; dividing the vehicle according to the safe vehicle speed threshold value based on a gear speed table to generate a first gear dividing result; receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table, and generating a second gear dividing result; when the first gear dividing result and the second gear dividing result belong to the same gear, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the safe vehicle speed threshold; and when the first gear dividing result and the second gear dividing result belong to different gears, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold.
In a second aspect of the present application, a shift control system for an automotive AMT gearbox is provided, comprising: the information interaction module is used for interacting automobile positioning information to obtain traveling road basic information, wherein the traveling road basic information comprises road gradient information and road surface type information; the vehicle speed evaluation module is used for loading rainfall information, carrying out safe vehicle speed evaluation by combining the road gradient information and the road surface type information, and generating a safe vehicle speed threshold value; the first speed dividing module is used for dividing the vehicle according to the safety vehicle speed threshold value based on a gear speed table to generate a first gear dividing result; the second speed dividing module is used for receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table and generating a second gear dividing result; the first speed change control module is used for activating an AMT gearbox control assembly when the first gear dividing result and the second gear dividing result belong to the same gear, and performing speed change control on the vehicle driving speed according to the safe vehicle speed threshold; and the second speed change control module is used for activating an AMT gearbox control assembly when the first gear dividing result and the second gear dividing result belong to different gears, and performing speed change control on the vehicle driving speed according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold.
One or more technical solutions provided in the present application have at least the following technical effects or advantages:
according to the method and the device, road gradient information and road surface type information are obtained through interaction of automobile positioning information; loading rainfall information, and carrying out safe vehicle speed assessment by combining road gradient information and road surface type information to generate a safe vehicle speed threshold value; dividing the vehicle according to a safe vehicle speed threshold value based on a gear speedometer to generate a first gear dividing result; receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table, and generating a second gear dividing result; after gear judgment is carried out according to a first gear dividing result and a second gear dividing result, an AMT gearbox control component is activated, the technical scheme of speed change control is carried out on the driving speed of the vehicle according to a safe speed threshold value, the safe speed threshold value of the vehicle is obtained through accurate analysis on current road gradient information, road surface type information and rainfall information, speed change control is carried out on the basis of the safe speed threshold value through a gear analysis rule, and the technical effect of improving the raining weather and the speed control flexibility on a special road section is achieved.
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FIG. 1 is a schematic flow chart of a shift control method for an AMT gearbox of an automobile;
FIG. 2 is a schematic flow chart of a shift control for controlling a vehicle driving speed in a shift control method for an AMT gearbox of an automobile according to the present application;
fig. 3 is a schematic structural diagram of a gear shift control system for an AMT gearbox of an automobile.
Reference numerals illustrate: the system comprises an information interaction module 100, a vehicle speed evaluation module 200, a first speed division module 300, a second speed division module 400, a first speed change control module 500 and a second speed change control module 600.
Detailed Description
The application provides a gear shifting control method and a gear shifting control system for an automobile AMT gearbox, which are used for solving the technical problem that the existing intelligent driving speed control flexibility is poor due to the interference influence of special weather and special road conditions in the prior art. The safe speed threshold value of the vehicle is obtained through the accurate analysis of the current road gradient information, the road surface type information and the rainfall information, and the speed change control is performed based on the safe speed threshold value through the gear analysis rule, so that the technical effect of improving the rainfall weather and the speed control flexibility on a special road section is achieved.
Example 1
As shown in fig. 1, the present application provides a shift control method for an AMT gearbox of an automobile, comprising:
s10: the method comprises the steps of exchanging automobile positioning information to obtain traveling road basic information, wherein the traveling road basic information comprises road gradient information and road surface type information;
further, the step S10 of exchanging the positioning information of the vehicle to obtain the basic information of the driving road includes:
s11: and matching the driving road basic information based on a road state cloud data table according to the automobile positioning information.
Specifically, positioning information of a current vehicle is obtained based on the internet of vehicles technology, and the road state cloud data table of the current driving road is matched according to the vehicle positioning. The road state cloud data table is a road traffic data information set uploaded by a road network stored in the cloud in real time all the day, and can be used for carrying out data access through an interaction request and communicating with vehicle-end equipment in real time. The road state cloud data table is used for accessing current road gradient information and road surface type information, namely the driving road basic information, according to the automobile positioning information, wherein the road gradient information comprises the transverse slope and longitudinal slope information of the road surface; road type information includes, but is not limited to, asphalt, cement concrete, and other types of road. The gradient information and the road surface type information of the driving road are obtained to provide a data base for speed analysis and speed limitation of safe driving of the vehicle.
S20: loading rainfall information, and carrying out safe vehicle speed assessment by combining the road gradient information and the road surface type information to generate a safe vehicle speed threshold value;
further, the loading rainfall information is combined with the road gradient information and the road surface type information to perform safe vehicle speed evaluation, and a safe vehicle speed threshold is generated, and step S20 includes:
s21: retrieving a vehicle slip accident data set with the rainfall information, the road gradient information, the road surface type information and the vehicle model information as constraints, wherein the vehicle slip accident data set comprises a vehicle running speed record value;
s22: carrying out concentrated trend analysis on the vehicle running speed record value to generate a vehicle running speed concentrated record value;
s23: and extracting the minimum value of the concentrated record values of the vehicle running speeds, and setting the minimum value as the safe vehicle speed threshold value.
Specifically, in rainy days, the road surface is wet and slippery, the sight is poor, and if the road surface meets the road section with poor drainage or steep slope, the road surface can bring great potential safety hazard to traffic safety trip. At this time, since the vehicle speed should be reduced and a safe distance should be maintained from the preceding vehicle, the rainfall information is important for controlling the vehicle speed. And acquiring rainfall information at the automobile positioning information in real time according to the data information of the traffic weather station.
The vehicle slip data set is a callable traffic sign data set including a vehicle travel speed record value. The rainfall information, the road gradient information, the road surface type information and the vehicle model information are in corresponding relation with the vehicle running speed record value in the vehicle slip accident data set, in other words, the rainfall information, the road gradient information, the road surface type information, the vehicle model information and the vehicle running speed are collected in the vehicle slip accident, and the data are associated.
And searching the vehicle slip accident data set through the rainfall information, the road gradient information, the road surface type information and the vehicle model information to obtain a data search result which has higher similarity with the current vehicle driving road section and the current rainfall and has the vehicle slip accident and comprises the vehicle driving speed during slip.
And carrying out concentrated trend analysis on the retrieved vehicle running speed record values, and exemplary vehicle speeds of slipping accidents can be classified through cluster analysis, the data quantity of the vehicle speeds in each class is counted, and the class with small data quantity is removed, namely the edge data information is removed, so that the vehicle running speed concentrated record values are obtained.
In order to ensure that the vehicle runs safely under the current road condition and weather conditions, a running speed threshold value needs to be found, and the minimum vehicle speed is extracted from the vehicle running speed centralized record value to serve as the safe vehicle speed threshold value. As long as the vehicle speed is lower than or equal to the safe vehicle speed threshold value, the running safety of the current road section can be ensured.
S30: dividing the vehicle according to the safe vehicle speed threshold value based on a gear speed table to generate a first gear dividing result;
s40: receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table, and generating a second gear dividing result;
specifically, the speed of the manual-gear automobile and the gear are in a matching corresponding relation, so that gear division can be performed according to the matching relation of the speed and the gear, and the matching relation is seen in the gear speedometer. And on the basis of the gear speedometer, performing gear matching by using the safe vehicle speed threshold value to obtain gear information of safe running corresponding to the vehicle speed, wherein the gear information is the first gear dividing result.
At the moment, according to the driving speed of the vehicle, which is acquired by a sensor on the vehicle, the gear speed meter is used for dividing the vehicle, and a second gear dividing result, namely the gear information of the real-time driving vehicle, is generated.
S50: when the first gear dividing result and the second gear dividing result belong to the same gear, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the safe vehicle speed threshold;
further, as shown in fig. 2, when the first gear dividing result and the second gear dividing result belong to the same gear, an AMT gearbox control component is activated, and the vehicle driving speed is controlled according to the safe vehicle speed threshold, step S50 includes:
s51: when the first gear dividing result and the second gear dividing result belong to the same gear, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
s52: if the speed is greater than the first gear dividing result, a vehicle speed change analysis model embedded in the AMT gearbox control component is activated, the road gradient information, the road surface type information, the rainfall information and the first gear dividing result are received and analyzed, and a first speed change speed threshold value is generated;
s53: performing speed change control on the driving speed of the vehicle according to the safe vehicle speed threshold value by using the first speed change rate threshold value;
s54: and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
Further, the vehicle speed change analysis model, step S52 includes:
step 521: collecting a road gradient record data set, a road surface type record data set, a rainfall record data set, a gear record data set and a safe speed change rate identification data set;
step 522: and taking the safety speed change rate identification data set as supervision data, and configuring the vehicle speed change analysis model by combining the road gradient record data set, the road surface type record data set, the rainfall record data set and the gear record data set.
Specifically, the AMT gearbox control assembly is arranged on a current vehicle, and the AMT gearbox is provided with a set of electronic control element on a gear control mechanism based on a manual gearbox so as to achieve the purpose of automatically switching gear positions. The internal structure is also a manual gearbox, and an automatic gear shifting mechanism is added based on the manual gearbox.
And comparing the first gear dividing result with the second gear dividing result, and if the first gear dividing result and the second gear dividing result belong to the same gear, further adjusting the vehicle speed is needed. And judging whether the driving speed of the current vehicle is greater than or equal to the safe vehicle speed threshold value.
When the speed is greater than the preset value, the speed is adjusted, a vehicle speed change analysis model embedded in the AMT gearbox control component is activated for accurately adjusting the speed, the model is obtained through convergence of a large amount of data training, and the training data comprise a road gradient record data set, a road surface type record data set, a rainfall record data set, a gear record data set and a safe speed change speed identification data set.
The training process of the vehicle speed change analysis model is exemplified by a model in which a speed change rate analysis is performed on the vehicle running speed obtained by training based on a BP neural network. Dividing the road grade record data set, the road surface type record data set, the rainfall record data set and the gear record data set into 8:2, the eight-component data is set as training data, and the two-component data is set as verification data.
During training, any group of road gradient record data, road surface type record data, rainfall record data and gear record data are used as training input data, safety speed change rate identification data is used as supervision data to be input into a BP neural network model, an output result, namely a predicted safety speed change rate, is obtained through forward transmission, the deviation between the output safety speed change rate and the safety speed change rate identification data in the supervision data is calculated, when the deviation is smaller than a preset deviation, a counter +1 is verified, when the deviation is larger than or equal to the preset deviation, reverse transmission is carried out, network parameters are adjusted, and meanwhile, the counter +0 is verified; and continuing to select data from the training data for training, when the number of the verification counter is greater than or equal to the preset times, using the verification data for verification, wherein the verification mode is identical to the training mode, when the number of the counter in the verification process is greater than or equal to the preset times, the BP neural network model is considered to be converged, otherwise, the training data is returned for continuing training.
After training to be converged, the road gradient information, the road surface type information, the rainfall information and the first gear dividing result can be analyzed by using the vehicle speed change analysis model, and a first speed change rate threshold value is output. The first shift rate threshold is maximum gradient information of the current speed change.
And aiming at the safe vehicle speed threshold, performing speed change control on the vehicle driving speed by using the first speed change rate threshold. If the speed is less than or equal to the current driving speed, the vehicle can run without performing speed change control. Because the first speed change rate threshold is the maximum gradient information of the current speed change, the speed can be regulated and controlled according to the maximum speed change gradient, namely the speed change rate, and the speed can be regulated and controlled as far as possible, so that the speed of the vehicle is in a safe driving speed range.
S60: and when the first gear dividing result and the second gear dividing result belong to different gears, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold.
Further, when the first gear dividing result and the second gear dividing result belong to different gears, an AMT gearbox control component is activated, and according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold, the vehicle driving speed is subjected to speed change control, and step S60 includes:
s61: when the first gear dividing result and the second gear dividing result belong to different gears, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
s62: if the gear set is larger than the first gear set, obtaining a second gear dividing result to the first gear dividing result;
s63: traversing the gear set, activating a vehicle speed change analysis model embedded in the AMT gearbox control component, receiving the road gradient information, the road surface type information and the rainfall information for analysis, and generating a speed change rate threshold set;
s64: according to the speed change rate threshold set, speed change control is carried out on the driving speed of the vehicle according to the safe vehicle speed threshold;
s65: and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
Specifically, when the first gear division result and the second gear division result are different, gear adjustment is required as appropriate. And judging whether the driving speed of the vehicle is greater than or equal to a safe vehicle speed threshold value according to the speed data uploaded by the vehicle.
The first gear dividing result is a gear corresponding to a safe vehicle speed threshold value, and the second gear dividing result is a gear corresponding to a vehicle driving speed. If the vehicle speed is greater than the safe vehicle speed threshold, indicating that deceleration is required, judging a gear difference between the second gear dividing result and the first gear dividing result to obtain a set of difference values, namely the gear set, for example, as follows: the second gear is divided into 4 gears, the first gear is divided into 1 gear, and the gear set comprises 3 gears and 2 gears.
The vehicle speed change analysis model embedded in the AMT gearbox control component is obtained by training a large number of data in the vehicle slip accident data set based on the BP neural network model, and can accurately predict the speed adjustment rate.
And receiving the current road gradient information, the road surface type information and the rainfall information, inputting the vehicle speed change analysis model for analysis, and outputting a speed change rate threshold set. The set of shift rate thresholds includes shift rates in different gears. Ensuring the accuracy and the continuity of speed change. The AMT gearbox control component performs a speed change control on the vehicle driving speed according to the speed change rate threshold set and the safe vehicle speed threshold, namely, gear-by-gear speed reduction. If the vehicle speed is smaller than or equal to the safe vehicle speed threshold value, the vehicle can safely pass through the current road section at the current speed without performing deceleration control, and can run according to the current vehicle driving speed. And data processing of gear by gear is carried out to obtain a plurality of speed change rate thresholds, and each gear is controlled to change speed by corresponding speed change rate, so that the accurate speed control of rapid speed reduction when the vehicle speed is higher is realized, and the technical effect of the flexibility of vehicle speed control is improved.
Further, the step S22 of performing a central tendency analysis on the vehicle running speed record value to generate a vehicle running speed central record value includes:
s221: configuring a preset speed deviation;
s222: performing cluster analysis on the vehicle running speed record values based on the preset speed deviation to generate a plurality of groups of vehicle running speed record values;
s223: obtaining a plurality of recorded value numbers of the plurality of groups of vehicle running speed recorded values;
s224: and deleting the vehicle running speed recorded values of which the number of the recorded values is smaller than the threshold value of the number of the recorded values to obtain the vehicle running speed concentrated recorded values.
Specifically, in cluster analysis, a general rule is to classify points having a small distance into one class and points having a large distance into a different class. The preset speed deviation is preset according to historical experience and is used for restraining the clustering analysis process.
And carrying out cluster analysis on the vehicle running speed record value according to the preset speed deviation, and adopting a mean shift cluster analysis method in an exemplary way. In a feature space having a number of sample points, a center point is initially randomly determined. Vectors of all points and center points in a circular space with radius D are calculated, D being an artificial design. And calculating the average value of all vectors in the whole circular space to obtain an offset average value. And (3) moving the center point to the position of the offset average value, repeating the moving process until the offset average value meets the preset speed deviation, stopping updating the center point position, recording the center point position at the moment, and classifying all data points in the iterative process.
The above process is repeated until all data points are accessed by the tag. And finding out the most accessed type according to each data point, dividing the data points into the type, namely finishing the clustering analysis process, and generating a plurality of groups of vehicle running speed record values.
And traversing the plurality of groups of vehicle running speed recorded values to obtain speed recorded value quantity information in each group, namely the plurality of recorded value quantities. A threshold value of the number of recorded values is set for removing less of the non-representative travel speed data that occurs in the travel speed of the vehicle. And comparing the number of the recorded values based on the threshold value of the number of the recorded values, deleting the recorded values of the vehicle running speeds smaller than the threshold value of the number of the recorded values, and obtaining the concentrated recorded values of the vehicle running speeds. The centralized record value of the vehicle running speed can reflect the slip vehicle running speed condition of the vehicle running section under the current rainfall, and the centralized trend analysis is completed through the cluster analysis and the non-centralized value removal, so that the vehicle speed control is scientifically realized, and the vehicle speed control basis is provided for the safe running of the vehicle under the current road condition and weather condition.
In summary, the embodiment of the application provides a gear shift control method and a gear shift control system for an automobile AMT gearbox, which have the following technical effects:
1. the safe speed threshold value of the vehicle is obtained through the accurate analysis of the current road gradient information, the road surface type information and the rainfall information, and the speed change control is performed based on the safe speed threshold value through the gear analysis rule, so that the technical effect of improving the rainfall weather and the speed control flexibility on a special road section is achieved.
2. Through the data processing of gear by gear, a speed change speed threshold value set is obtained, and each gear is controlled to change speed according to the corresponding speed change speed, so that the technical effects of accurate and quick speed control under the condition of large gear difference are achieved.
3. The centralized trend analysis is completed through the cluster analysis and the non-centralized value removal, which is beneficial to scientifically realizing the vehicle speed control and provides the technical effect of the vehicle speed control basis for the safe running of the vehicle under the current road condition and weather condition.
Example two
Based on the same inventive concept as the shift control method for an AMT gearbox of an automobile in the foregoing embodiments, as shown in fig. 3, the present application provides a shift control system for an AMT gearbox of an automobile, comprising:
the information interaction module 100 is configured to interact vehicle positioning information to obtain driving road base information, where the driving road base information includes road gradient information and road surface type information;
the vehicle speed evaluation module 200 is used for loading rainfall information, and carrying out safe vehicle speed evaluation by combining the road gradient information and the road surface type information to generate a safe vehicle speed threshold;
the first speed dividing module 300 is configured to divide the vehicle according to the safe vehicle speed threshold and based on a gear speed table, and generate a first gear dividing result;
a second speed dividing module 400, configured to receive a driving speed of the vehicle, divide the driving speed based on a gear speed table, and generate a second gear dividing result;
the first speed change control module 500 is configured to activate an AMT gearbox control component when the first gear division result and the second gear division result belong to the same gear, and perform speed change control on the vehicle driving speed according to the safe vehicle speed threshold;
and the second speed change control module 600 is configured to activate an AMT gearbox control component when the first gear division result and the second gear division result belong to different gears, and perform speed change control on the vehicle driving speed according to the first gear division result, the second gear division result and the safe vehicle speed threshold.
Further, the vehicle speed evaluation module 200 performs the steps of:
retrieving a vehicle slip accident data set with the rainfall information, the road gradient information, the road surface type information and the vehicle model information as constraints, wherein the vehicle slip accident data set comprises a vehicle running speed record value;
carrying out concentrated trend analysis on the vehicle running speed record value to generate a vehicle running speed concentrated record value;
and extracting the minimum value of the concentrated record values of the vehicle running speeds, and setting the minimum value as the safe vehicle speed threshold value.
Further, the vehicle speed evaluation module 200 performs the steps of:
configuring a preset speed deviation;
performing cluster analysis on the vehicle running speed record values based on the preset speed deviation to generate a plurality of groups of vehicle running speed record values;
obtaining a plurality of recorded value numbers of the plurality of groups of vehicle running speed recorded values;
and deleting the vehicle running speed recorded values of which the number of the recorded values is smaller than the threshold value of the number of the recorded values to obtain the vehicle running speed concentrated recorded values.
Further, the first speed change control module 500 performs the steps of:
when the first gear dividing result and the second gear dividing result belong to the same gear, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
if the speed is greater than the first gear dividing result, a vehicle speed change analysis model embedded in the AMT gearbox control component is activated, the road gradient information, the road surface type information, the rainfall information and the first gear dividing result are received and analyzed, and a first speed change speed threshold value is generated;
performing speed change control on the driving speed of the vehicle according to the safe vehicle speed threshold value by using the first speed change rate threshold value;
and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
Further, the second speed change control module 600 performs the steps of:
when the first gear dividing result and the second gear dividing result belong to different gears, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
if the gear set is larger than the first gear set, obtaining a second gear dividing result to the first gear dividing result;
traversing the gear set, activating a vehicle speed change analysis model embedded in the AMT gearbox control component, receiving the road gradient information, the road surface type information and the rainfall information for analysis, and generating a speed change rate threshold set;
according to the speed change rate threshold set, speed change control is carried out on the driving speed of the vehicle according to the safe vehicle speed threshold;
and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
Further, the first speed change control module 500 performs the steps of:
collecting a road gradient record data set, a road surface type record data set, a rainfall record data set, a gear record data set and a safe speed change rate identification data set;
and taking the safety speed change rate identification data set as supervision data, and configuring the vehicle speed change analysis model by combining the road gradient record data set, the road surface type record data set, the rainfall record data set and the gear record data set.
Further, the information interaction module 100 performs the steps of:
and matching the driving road basic information based on a road state cloud data table according to the automobile positioning information.
The specification and drawings are merely exemplary of the application and are to be regarded as covering any and all modifications, variations, combinations, or equivalents that are within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the present application and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. A shift control method for an AMT gearbox of a motor vehicle, comprising:
the method comprises the steps of exchanging automobile positioning information to obtain traveling road basic information, wherein the traveling road basic information comprises road gradient information and road surface type information;
loading rainfall information, and carrying out safe vehicle speed assessment by combining the road gradient information and the road surface type information to generate a safe vehicle speed threshold value;
dividing the vehicle according to the safe vehicle speed threshold value based on a gear speed table to generate a first gear dividing result;
receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table, and generating a second gear dividing result;
when the first gear dividing result and the second gear dividing result belong to the same gear, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the safe vehicle speed threshold;
and when the first gear dividing result and the second gear dividing result belong to different gears, activating an AMT gearbox control component, and performing speed change control on the vehicle driving speed according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold.
2. The method of claim 1, wherein loading rainfall information, and performing a safe vehicle speed assessment in combination with the road grade information and the road surface type information, generates a safe vehicle speed threshold value, comprises:
retrieving a vehicle slip accident data set with the rainfall information, the road gradient information, the road surface type information and the vehicle model information as constraints, wherein the vehicle slip accident data set comprises a vehicle running speed record value;
carrying out concentrated trend analysis on the vehicle running speed record value to generate a vehicle running speed concentrated record value;
and extracting the minimum value of the concentrated record values of the vehicle running speeds, and setting the minimum value as the safe vehicle speed threshold value.
3. The method of claim 2, wherein the performing a central tendency analysis on the vehicle travel speed record values to generate vehicle travel speed central record values comprises:
configuring a preset speed deviation;
performing cluster analysis on the vehicle running speed record values based on the preset speed deviation to generate a plurality of groups of vehicle running speed record values;
obtaining a plurality of recorded value numbers of the plurality of groups of vehicle running speed recorded values;
and deleting the vehicle running speed recorded values of which the number of the recorded values is smaller than the threshold value of the number of the recorded values to obtain the vehicle running speed concentrated recorded values.
4. The method of claim 1, wherein activating an AMT gearbox control component when the first gear split result and the second gear split result belong to the same gear, the vehicle driving speed being shift controlled according to the safe vehicle speed threshold value, comprising:
when the first gear dividing result and the second gear dividing result belong to the same gear, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
if the speed is greater than the first gear dividing result, a vehicle speed change analysis model embedded in the AMT gearbox control component is activated, the road gradient information, the road surface type information, the rainfall information and the first gear dividing result are received and analyzed, and a first speed change speed threshold value is generated;
performing speed change control on the driving speed of the vehicle according to the safe vehicle speed threshold value by using the first speed change rate threshold value;
and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
5. The method of claim 1, wherein activating an AMT gearbox control component when the first gear split result and the second gear split result belong to different gears, and performing shift control on the vehicle driving speed according to the first gear split result, the second gear split result, and the safe vehicle speed threshold value comprises:
when the first gear dividing result and the second gear dividing result belong to different gears, judging whether the vehicle driving speed is greater than or equal to the safe vehicle speed threshold;
if the gear set is larger than the first gear set, obtaining a second gear dividing result to the first gear dividing result;
traversing the gear set, activating a vehicle speed change analysis model embedded in the AMT gearbox control component, receiving the road gradient information, the road surface type information and the rainfall information for analysis, and generating a speed change rate threshold set;
according to the speed change rate threshold set, speed change control is carried out on the driving speed of the vehicle according to the safe vehicle speed threshold;
and if the vehicle driving speed is less than or equal to the preset value, running based on the vehicle driving speed.
6. A method as claimed in claim 4 or 5, comprising:
collecting a road gradient record data set, a road surface type record data set, a rainfall record data set, a gear record data set and a safe speed change rate identification data set;
and taking the safety speed change rate identification data set as supervision data, and configuring the vehicle speed change analysis model by combining the road gradient record data set, the road surface type record data set, the rainfall record data set and the gear record data set.
7. The method of claim 1, wherein the interacting the vehicle positioning information to obtain the driving road base information comprises:
and matching the driving road basic information based on a road state cloud data table according to the automobile positioning information.
8. A shift control system for an automotive AMT gearbox, comprising:
the information interaction module is used for interacting automobile positioning information to obtain traveling road basic information, wherein the traveling road basic information comprises road gradient information and road surface type information;
the vehicle speed evaluation module is used for loading rainfall information, carrying out safe vehicle speed evaluation by combining the road gradient information and the road surface type information, and generating a safe vehicle speed threshold value;
the first speed dividing module is used for dividing the vehicle according to the safety vehicle speed threshold value based on a gear speed table to generate a first gear dividing result;
the second speed dividing module is used for receiving the driving speed of the vehicle, dividing the driving speed based on a gear speed table and generating a second gear dividing result;
the first speed change control module is used for activating an AMT gearbox control assembly when the first gear dividing result and the second gear dividing result belong to the same gear, and performing speed change control on the vehicle driving speed according to the safe vehicle speed threshold;
and the second speed change control module is used for activating an AMT gearbox control assembly when the first gear dividing result and the second gear dividing result belong to different gears, and performing speed change control on the vehicle driving speed according to the first gear dividing result, the second gear dividing result and the safe vehicle speed threshold.
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