CN110356409A - Complete vehicle quality detection method and device, vehicle - Google Patents
Complete vehicle quality detection method and device, vehicle Download PDFInfo
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- CN110356409A CN110356409A CN201810253072.5A CN201810253072A CN110356409A CN 110356409 A CN110356409 A CN 110356409A CN 201810253072 A CN201810253072 A CN 201810253072A CN 110356409 A CN110356409 A CN 110356409A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
- B60W40/13—Load or weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2900/00—Indexing codes relating to the purpose of, or problem solved of road vehicle drive control systems not otherwise provided for in groups B60W30/00
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- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
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- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
This disclosure relates to a kind of complete vehicle quality detection method and device, vehicle.The described method includes: obtaining the status information of vehicle driving；Judge whether that gear conversion occurs according to the state information；When determining to occur gear conversion, the gear information before shifting gears and after shift is determined；Complete vehicle quality is determined according to the status information before the gear information and shift before shift, alternatively, determining complete vehicle quality according to the status information after the gear information and shift after shift.In this way, without installing shift sensor, it will be able to determine gear information, calculate complete vehicle quality in real time according to kinetic characteristics, to keep the control of vehicle more accurate.
Description
Technical field
This disclosure relates to vehicle automation field, and in particular, to a kind of complete vehicle quality detection method and device, vehicle
?.
Background technique
In vehicle travel process, the operation of some control systems needs to use complete vehicle quality as a parameter to carrying out data
Processing.Usual complete vehicle quality is that parameter the most fixed is stored in advance in systems, and in fact, vehicle exist zero load, semi-load,
A variety of working conditions such as fully loaded, the influence that the variation of complete vehicle quality has degree different each control system.
For example, for the braking system of vehicle, when carrying out matched design to braking system, usually according to meeting pole
Limit state is fully loaded to be designed, and after the brake model confirmation of selection, the brake force of front and back wheel then solidifies.Especially
The commercial vehicles such as light truck, middle heavy truck, the complete vehicle quality in different loads have larger difference.It causes a problem in that in this way, works as car
When in zero load, half cargo condition, since rear axle load is small, front axle load is basically unchanged, when the braking of driver's pedal, rear axle
It is easy locking, the impact of vehicle bridge and suspension, suspension and vehicle frame is all bigger, and therefore, insensitivity is poor, and passenger's experiences by bus
It is poor.
Therefore, accurate complete vehicle quality has a very important significance vehicle control.If can be real-time dynamicly
It determines complete vehicle quality, then can greatly promote the accuracy of vehicle control, improve the safety of vehicle driving.
Summary of the invention
In view of above-mentioned technical problem, inventor expects, if it is possible to calculate real-time complete vehicle quality, it will be able to according to reality
When complete vehicle quality run corresponding control system, to keep the control of vehicle more accurate.In addition, calculating real-time vehicle
Quality can also accurately calculate the data such as oil consumption.As in the unmanned technology of future thrust, the control of vehicle is complete
Intelligence, complete vehicle quality are key parameters indispensable in intelligence control system, for active safety system and indispensable.
Purpose of this disclosure is to provide a kind of complete vehicle quality detection method and devices, vehicle, so that the control of vehicle is more
Accurately.
To achieve the goals above, the disclosure provides a kind of complete vehicle quality detection method.The described method includes: obtaining vehicle
The status information of traveling；Judge whether that gear conversion occurs according to the state information；When determining to occur gear conversion, determine
Gear information before shift and after shift；Complete vehicle quality is determined according to the status information before the gear information and shift before shift,
Alternatively, determining complete vehicle quality according to the status information after the gear information and shift after shift.
Optionally, described to judge whether that the step of gear conversion occurs includes: according to the shape according to the state information
State information judges whether the gear speed ratio of the vehicle changes；When the gear speed ratio of the vehicle changes, determine
Gear conversion has occurred.
Optionally, judge that the step of whether the gear speed ratio of the vehicle changes includes: according to the state information
Judge whether the gear speed ratio of the vehicle changes according to the following formula:
Wherein, I1And I2The gear speed ratio of vehicle described in respectively the first moment and the second moment, P1And P2It is respectively described
The engine test bench characteristic output power at the first moment and second moment, n1And n2Respectively described first moment and described
The engine speed at two moment, a1And a2The acceleration of vehicle described in respectively described first moment and second moment.
Optionally, described when determining generation gear conversion, it determines and is wrapped before shifting gears with the step of gear information after shift
It includes: the gear speed ratio when determining to occur gear conversion, according to the car status information before shift and after shift, before determining shift
Relationship between the gear speed ratio after shift；In pre-stored associated data, search corresponding with identified relationship
Shift before gear information and shift after gear information.
Optionally, described when determining to occur gear conversion, according to the car status information before shift and after shift, determine
The step of relationship between gear speed ratio before shift and the gear speed ratio after shift include: when determining to occur gear conversion,
The relationship between the gear speed ratio after gear speed ratio and shift before determining shift according to the following formula:
Wherein, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBeforeAnd IAfterwardsRespectively change
Gear speed ratio before gear and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBeforeAnd aAfterwardsRespectively change
Vehicle acceleration before gear and after shift.
Optionally, the gear information according to before shift and the status information before shift determine complete vehicle quality, alternatively, root
The step of determining complete vehicle quality according to the status information after the gear information and shift after shift includes: determining whole according to the following formula
Vehicle quality:
M=9550PBeforeIBeforei/rnBeforeaBefore
Or, M=9550PAfterwardsIAfterwardsi/rnAfterwardsaAfterwards
Wherein, M is complete vehicle quality, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBefore
And IAfterwardsGear speed ratio respectively before shift and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBefore
And aAfterwardsVehicle acceleration respectively before shift and after shift, r are the rolling radius of wheel, and i is rear axle speed ratio.
Optionally, the step of status information for obtaining vehicle driving includes: when the vehicle accelerates, to obtain vehicle driving
Status information.
The disclosure also provides a kind of complete vehicle quality detection device.Described device includes: acquisition module, for obtaining vehicle row
The status information sailed；Judgment module is connect with the acquisition module, and gear occurs for judging whether according to the state information
Conversion；Gear information determination module is connect with the judgment module, is used to determine before shifting gears when determining to occur gear conversion
With the gear information after shift；Complete vehicle quality determining module is connect with the gear information determination module, before according to shift
Gear information and shift before status information determine complete vehicle quality, alternatively, according to after shift gear information and shift after
Status information determines complete vehicle quality.
Optionally, the judgment module includes: the first judging submodule, for judging the vehicle according to the state information
Gear speed ratio whether change；Second judgment submodule is connect with first judging submodule, for working as the vehicle
Gear speed ratio when changing, gear conversion has occurred for judgement.
The disclosure also provides a kind of vehicle, and the vehicle includes above-mentioned complete vehicle quality detection device.
Through the above technical solutions, being determined whether that gear conversion occurs according to the status information of vehicle driving, and occurring
When gear is converted, complete vehicle quality is determined according to the status information of determining gear information and vehicle driving.In this way, without installing gear
Level sensor, it will be able to determine gear information, calculate complete vehicle quality in real time according to kinetic characteristics, to make the control of vehicle
It makes more accurate.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the flow chart for the complete vehicle quality detection method that an exemplary embodiment provides；
Fig. 2 is the block diagram for the complete vehicle quality detection device that an exemplary embodiment provides.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is the flow chart for the complete vehicle quality detection method that an exemplary embodiment provides.As shown in Figure 1, the method
Include the following steps.
In step s 11, the status information of vehicle driving is obtained.
In step s 12, judged whether that gear conversion occurs according to status information.
In step s 13, when determining to occur gear conversion, the gear information before shifting gears and after shift is determined.
In step S14, complete vehicle quality is determined according to the status information before the gear information and shift before shift, alternatively,
Complete vehicle quality is determined according to the status information after the gear information and shift after shift.
Wherein, the status information of vehicle driving include indicate state of motion of vehicle parameter (for example, the acceleration of vehicle,
Engine test bench characteristic output power, engine speed) and vehicle component structural parameters (for example, rear axle speed ratio, gear are fast
Than the rolling radius of, wheel).
For the structural parameters of vehicle component, can be stored in advance.It, can be with for indicating the parameter of state of motion of vehicle
It is detected in real time in the driving process of vehicle.Status information can be from existing system (for example, the electronic control unit of vehicle
ECU it directly acquires, can also be obtained by special inspecting equipment in).
In the driving process of vehicle, engine output torque via gearbox, transmission shaft, rear axle retarder, pass
It is handed to wheel, driving vehicle advances.Different gears has different speed ratios in gearbox.In some status informations and gearbox
Gear speed ratio have fixed drive connection, therefore, be capable of determining that according to these status informations whether have occurred gear turn
It changes.Also, it, can be according to state parameter pre-stored in vehicle (for example, the speed of each gear when gear conversion occurs
Than) determine the preceding gear information (for example, gear number) with after shift of shifting gears.
After determining gear information, it can be passed through according to gear information car status information corresponding with the gear information
Common-used formula calculates complete vehicle quality.
Through the above technical solutions, being determined whether that gear conversion occurs according to the status information of vehicle driving, and occurring
When gear is converted, complete vehicle quality is determined according to the status information of determining gear information and vehicle driving.In this way, without installing gear
Level sensor, it will be able to determine gear information, calculate complete vehicle quality in real time according to kinetic characteristics, to make the control of vehicle
It makes more accurate.
Since the speed ratio of different gears is different, and speed ratio and gear are one-to-one relationships, and therefore, whether gear occurs to turn
Changing can judge according to the variation of speed ratio.In one embodiment, on the basis of Fig. 1, judge whether to send out according to status information
The step of raw gear conversion (step S12), may comprise steps of.
Step S121 judges whether the gear speed ratio of vehicle changes according to status information.
Step S122, when the gear speed ratio of vehicle changes, gear conversion has occurred for judgement.
Due to having certain relationship between status information and gear speed ratio, it can judge that gear speed ratio is by the relationship
It is no to change, once gear speed ratio changes, it may be considered that gear is converted.
Wherein, when the variation of gear speed ratio is in scheduled error range, it is believed that there is no variations for gear speed ratio.
When the variation of only gear speed ratio has been more than scheduled error range, just think that gear speed ratio is changed, the error range
Can rule of thumb or test determine.
In the embodiment, judge whether gear changes by judging the variation of speed ratio, in this way, without installing gear
Sensor, it will be able to gear information be determined according to the status information of vehicle, eliminate the hardware facility of detection gear information, section
Space is saved, and accuracy is high.
In the above-described embodiments, it can be calculated by a variety of formulas and determine whether gear speed ratio changes.For example,
The output torque of engine are as follows:
T=9550P/n
Wherein, T is the output torque of engine, and P is engine test bench characteristic output power, and n is engine speed.Work as vehicle
When being currently at a certain gear, the output torque of gearbox are as follows:
T1=T × I=9550PI/n
Wherein, T1When being in current shift for vehicle, the output torque of gearbox, I is the speed ratio of current shift.Torque warp
Transmission shaft driven is transferred to wheel to vehicle bridge, then through vehicle bridge, is transferred to the torque of wheel are as follows:
T2=T1× i=9550PIi/n
Wherein, T2For the torque for being transferred to wheel, i is rear axle speed ratio.The driving force of vehicle driving are as follows:
F=T2/ r=9550PIi/rn
Wherein, F is the driving force of vehicle driving, and r is the rolling radius of wheel.Complete vehicle quality at this time are as follows:
M=F/a=9550PIi/rna
Wherein, M is complete vehicle quality, and a is the acceleration of vehicle.Therefore, there is following equation:
M=9550P1I1i/rn1a1 (1)
M=9550P2I2i/rn2a2 (2)
Wherein, the gear speed ratio at respectively the first moment and the second moment vehicle, P1And P2Respectively the first moment and second
The engine test bench characteristic output power at moment, n1And n2The respectively engine speed at the first moment and the second moment, a1And a2Point
Not Wei the first moment and the second moment vehicle acceleration.
It is available according to above-mentioned formula (1) and (2):
In above formula, work as I1And I2When equal, I1/I2=1, gear speed ratio does not change；Work as I1And I2When unequal, I1/I2≠
1, gear speed ratio changes.
From the above mentioned, in one embodiment, the whether changed step of gear speed ratio of vehicle is judged according to status information
Suddenly (step S121) may include: to judge whether the gear speed ratio of vehicle changes according to the following formula:
It in the embodiment, according to status information, is calculated with dynamics formula, judges whether gear speed ratio becomes
Change, method is simple and reliable, practical.
In one embodiment, it on the basis of Fig. 1, when determining to occur gear conversion, determines before shifting gears and after shift
The step of gear information (step S13), may comprise steps of.
Step S131, when determining to occur gear conversion, according to the car status information before shift and after shift, determination is changed
The relationship between the gear speed ratio after gear speed ratio and shift before gear.
Step S132, the gear in pre-stored associated data, before searching shift corresponding with identified relationship
Gear information after position information and shift.
In particular it is required that predefine the relationship between the gear speed ratio of any two gear, it is especially two neighboring
The speed ratio relationship of gear.According to the relationship between the gear speed ratio before shift and after shift, finding is transformed by which gear
Which gear.For example, the ratio of the gear speed ratio before shift and after shift is 1.5, then finds 2 in the data prestored
Gear and the ratio of the speed ratio of 3 gears are 1.5, then can be determined that 2 gears have been transformed into 3 gears.
In the embodiment, by pre-production database, the preceding gear with after shift of shift is determined by the way of tabling look-up
Information, method is simple and reliable, practical.
The relationship between gear speed ratio before shift and after shift, can pass through the method similar with the derivation of formula (3)
It obtains.In one embodiment, above-mentioned when determining to occur gear conversion, believed according to the vehicle-state before shift and after shift
Breath, determine shift before gear speed ratio and shift after gear speed ratio between relationship the step of (step S131) may include:
When determining to occur gear conversion, between the gear speed ratio after gear speed ratio and shift before determining shift according to the following formula
Relationship:
Wherein, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBeforeAnd IAfterwardsRespectively change
Gear speed ratio before gear and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBeforeAnd aAfterwardsRespectively change
Vehicle acceleration before gear and after shift.
After determining the specific gear of vehicle, so that it may in conjunction with corresponding car status information, calculate complete vehicle quality.
In one embodiment, complete vehicle quality is determined according to the status information before the gear information and shift before shift, alternatively, according to shift
The step of status information after gear information and shift afterwards determines complete vehicle quality (step S14) includes: true according to the following formula
Determine complete vehicle quality:
M=9550PBeforeIBeforei/rnBeforeaBefore (6)
Or, M=9550PAfterwardsIAfterwardsi/rnAfterwardsaAfterwards (7)
Wherein, M is complete vehicle quality, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBefore
And IAfterwardsGear speed ratio respectively before shift and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBefore
And aAfterwardsVehicle acceleration respectively before shift and after shift, r are the rolling radius of wheel, and i is rear axle speed ratio.
In the embodiment, complete vehicle quality is calculated according to kinetics equation, method is simple and reliable, practical.
Above-mentioned method can determine complete vehicle quality in vehicle travel process and when gear conversion occurs.It considers
Gear conversion is mainly applied when controlling vehicle and accelerating, accordingly it is also possible to which this method is defined in the only implementation when vehicle accelerates.
In one embodiment, on the basis of Fig. 1, the step of obtaining the status information of vehicle driving (step S11) may include: to work as vehicle
Accelerate when, obtain the status information of vehicle driving.
The speed of vehicle can be detected by velocity sensor.In the embodiment, in vehicle deceleration or at the uniform velocity when, not
Execute subsequent step.In this way, the speed ratio that can not be stored with gear decline (such as 2 gears to 1 gear) in the database prestored is closed
The data of system, save memory, accelerate arithmetic speed.
Furthermore, it is contemplated that vehicle less variation that load capacity occurs during primary igniting, it is each to can be set to vehicle
Igniting only detects a complete vehicle quality, may be arranged as only when preset condition meets, detection trigger complete vehicle quality, to reduce
Operation times.
The disclosure also provides a kind of complete vehicle quality detection device.Fig. 2 is the complete vehicle quality inspection that an exemplary embodiment provides
Survey the block diagram of device.As shown in Fig. 2, the complete vehicle quality detection device 10 includes obtaining module 11, judgment module 12, gear letter
Cease determining module 13 and complete vehicle quality determining module 14.
Obtain the status information that module 11 is used to obtain vehicle driving.
Judgment module 12 is connect with the acquisition module, for judging whether that gear, which occurs, to be turned according to the state information
It changes.
Gear information determination module 13 is connect with the judgment module, for when determining to occur gear conversion, determination to be changed
Gear information before gear and after shift.
Complete vehicle quality determining module 14 is connect with the gear information determination module, for according to the gear information before shift
Complete vehicle quality is determined with the status information before shift, alternatively, true according to the status information after the gear information and shift after shift
Determine complete vehicle quality.
Optionally, the judgment module 12 may include the first judging submodule and second judgment submodule.
First judging submodule for judging whether the gear speed ratio of the vehicle changes according to the state information.
Second judgment submodule is connect with first judging submodule, is become for the gear speed ratio when the vehicle
When change, gear conversion has occurred for judgement.
Optionally, first judging submodule may include third judging submodule.
Third judging submodule for judging whether the gear speed ratio of the vehicle changes according to the following formula:
Wherein, I1And I2The gear speed ratio of vehicle described in respectively the first moment and the second moment, P1And P2It is respectively described
The engine test bench characteristic output power at the first moment and second moment, n1And n2Respectively described first moment and described
The engine speed at two moment, a1And a2The acceleration of vehicle described in respectively described first moment and second moment.
Optionally, the gear information determination module 13 may include that relationship determines submodule and searches submodule.
Relationship determines submodule for being believed according to the vehicle-state before shift and after shift when determining to occur gear conversion
Breath, the relationship between the gear speed ratio after gear speed ratio and shift before determining shift.
Search submodule and with the relationship determine that submodule connect, in pre-stored associated data, lookup and
The gear information after gear information and shift before the corresponding shift of identified relationship.
Optionally, the relationship determines that submodule includes the first determining submodule.
First determines that submodule is used for the gear speed when determining to occur gear conversion, before determining shift according to the following formula
Than and shift after gear speed ratio between relationship:
Wherein, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBeforeAnd IAfterwardsRespectively change
Gear speed ratio before gear and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBeforeAnd aAfterwardsRespectively change
Vehicle acceleration before gear and after shift.
Optionally, the complete vehicle quality determining module 14 includes the second determining submodule.
Second determines submodule for determining complete vehicle quality according to the following formula:
M=9550PBeforeIBeforei/rnBeforeaBefore
Or, M=9550PAfterwardsIAfterwardsi/rnAfterwardsaAfterwards
Wherein, M is complete vehicle quality, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBefore
And IAfterwardsGear speed ratio respectively before shift and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBefore
And aAfterwardsVehicle acceleration respectively before shift and after shift, r are the rolling radius of wheel, and i is rear axle speed ratio.
Optionally, the acquisition module 11 includes acquisition submodule.
Acquisition submodule is for when the vehicle accelerates, obtaining the status information of vehicle driving.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
Through the above technical solutions, being determined whether that gear conversion occurs according to the status information of vehicle driving, and occurring
When gear is converted, complete vehicle quality is determined according to the status information of determining gear information and vehicle driving.In this way, without installing gear
Level sensor, it will be able to determine gear information, calculate complete vehicle quality in real time according to kinetic characteristics, to make the control of vehicle
It makes more accurate.
The disclosure also provides a kind of vehicle, and the vehicle includes above-mentioned complete vehicle quality detection device 10.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of complete vehicle quality detection method, which is characterized in that the described method includes:
Obtain the status information of vehicle driving；
Judge whether that gear conversion occurs according to the state information；
When determining to occur gear conversion, the gear information before shifting gears and after shift is determined；
Complete vehicle quality is determined according to the status information before the gear information and shift before shift, alternatively, according to the gear after shift
Status information after information and shift determines complete vehicle quality.
2. the method according to claim 1, wherein described judge whether that gear occurs according to the state information
The step of conversion includes:
Judge whether the gear speed ratio of the vehicle changes according to the state information；
When the gear speed ratio of the vehicle changes, gear conversion has occurred for judgement.
3. according to the method described in claim 2, it is characterized in that, judging the gear speed of the vehicle according to the state information
Than whether change the step of include:
Judge whether the gear speed ratio of the vehicle changes according to the following formula:
Wherein, I1And I2The gear speed ratio of vehicle described in respectively the first moment and the second moment, P1And P2Respectively described first
The engine test bench characteristic output power at moment and second moment, n1And n2Respectively described first moment and it is described second when
The engine speed at quarter, a1And a2The acceleration of vehicle described in respectively described first moment and second moment.
4. the method according to claim 1, wherein it is described when determine occur gear conversion when, determine shift before
Include: with the step of gear information after shift
Gear speed when determining to occur gear conversion, according to the car status information before shift and after shift, before determining shift
Than and shift after gear speed ratio between relationship；
In pre-stored associated data, after the gear information and shift before searching shift corresponding with identified relationship
Gear information.
5. according to the method described in claim 4, it is characterized in that, it is described when determine occur gear conversion when, before shift
With the car status information after shift, determine shift before gear speed ratio and shift after gear speed ratio between relationship the step of
Include:
When determine occur gear conversion when, according to the following formula determine shift before gear speed ratio and shift after gear speed ratio it
Between relationship:
Wherein, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBeforeAnd IAfterwardsBefore respectively shifting gears
With the gear speed ratio after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBeforeAnd aAfterwardsBefore respectively shifting gears
With the vehicle acceleration after shift.
6. the method according to claim 1, wherein the shape before the gear information according to before shift and shift
State information determines complete vehicle quality, alternatively, determining complete vehicle quality according to the status information after the gear information and shift after shift
Step includes:
Complete vehicle quality is determined according to the following formula:
M=9550PBeforeIBeforei/rnBeforeaBefore
Or, M=9550PAfterwardsIAfterwardsi/rnAfterwardsaAfterwards
Wherein, M is complete vehicle quality, PBeforeAnd PAfterwardsEngine test bench characteristic output power respectively before shift and after shift, IBeforeAnd IAfterwards
Gear speed ratio respectively before shift and after shift, nBeforeAnd nAfterwardsEngine speed respectively before shift and after shift, aBeforeAnd aAfterwards
Vehicle acceleration respectively before shift and after shift, r are the rolling radius of wheel, and i is rear axle speed ratio.
7. method described in any claim in -6 according to claim 1, which is characterized in that the shape for obtaining vehicle driving
The step of state information includes:
When the vehicle accelerates, the status information of vehicle driving is obtained.
8. a kind of complete vehicle quality detection device, which is characterized in that described device includes:
Module is obtained, for obtaining the status information of vehicle driving；
Judgment module is connect with the acquisition module, and gear conversion occurs for judging whether according to the state information；
Gear information determination module is connect with the judgment module, for when determine occur gear conversion when, determine shift before and
Gear information after shift；
Complete vehicle quality determining module is connect with the gear information determination module, for according to before shift gear information and change
Status information before gear determines complete vehicle quality, alternatively, being determined according to the status information after the gear information and shift after shift whole
Vehicle quality.
9. device according to claim 8, which is characterized in that the judgment module includes:
First judging submodule, for judging whether the gear speed ratio of the vehicle changes according to the state information；
Second judgment submodule is connect with first judging submodule, is changed for the gear speed ratio when the vehicle
When, gear conversion has occurred for judgement.
10. a kind of vehicle, which is characterized in that the vehicle includes complete vehicle quality detection device described in claim 8 or 9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179465A (en) * | 2019-12-13 | 2020-05-19 | 同济大学 | Automobile oil consumption prediction method |
| CN111942401A (en) * | 2020-07-31 | 2020-11-17 | 东风商用车有限公司 | Vehicle mass estimation method and system capable of avoiding increasing standard quantity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111179465A (en) * | 2019-12-13 | 2020-05-19 | 同济大学 | Automobile oil consumption prediction method |
| CN111179465B (en) * | 2019-12-13 | 2021-12-31 | 同济大学 | Automobile oil consumption prediction method |
| CN113044032A (en) * | 2019-12-26 | 2021-06-29 | 北汽福田汽车股份有限公司 | Vehicle running power control method and device and vehicle |
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| CN111942401B (en) * | 2020-07-31 | 2021-11-12 | 东风商用车有限公司 | Vehicle mass estimation method and system capable of avoiding increasing standard quantity |
| CN113859252A (en) * | 2021-10-29 | 2021-12-31 | 北汽福田汽车股份有限公司 | Vehicle weight determining method and device |
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Application publication date: 20191022 |