CN106564504A - Computing method of AMT finished automobile mass - Google Patents
Computing method of AMT finished automobile mass Download PDFInfo
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- CN106564504A CN106564504A CN201610946171.2A CN201610946171A CN106564504A CN 106564504 A CN106564504 A CN 106564504A CN 201610946171 A CN201610946171 A CN 201610946171A CN 106564504 A CN106564504 A CN 106564504A
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- Prior art keywords
- amt
- complete vehicle
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- computational methods
- speed
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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
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a computing method of an AMT finished automobile mass and belongs to the technical field of finished automobile mass computing. The computing method comprises the following steps: at first, carrying out recursion average filter treatment on a signal, collecting signals of rotating speed and torque, then, identifying an acceleration process, and finally, computing the finished automobile mass, averaging, and transmitting the computed result to an AMT in real time. According to the invention, the computing method is low in cost and high in computing speed, can accurately obtain the mass of the AMT vehicle, updates and transmits the mass to the AMT in real time, and can meet the shifting strategy requirement of the AMT.
Description
Technical field
The invention belongs to complete vehicle quality computing technique field, and in particular to a kind of computational methods for AMT complete vehicle qualities.
Background technology
Firstly the need of vehicle is considered it is empty wagons or fully loaded when electric-controlled mechanical automatic speed transmission (AMT) Shifting is formulated,
Because vehicle mass is different, shifting points are also differed.So AMT must in real time obtain the quality information of vehicle, just can ensure that and change
The accurate of performance is kept off, in order to obtain the quality information of vehicle, mass sensor is installed on some vehicles, so will certainly
Increase the cost of vehicle.
The content of the invention
For problems of the prior art, the invention provides a kind of computational methods for AMT complete vehicle qualities, institute
The quality that computational methods low cost, calculating speed draw soon, accurately AMT vehicles, and real-time update are stated, AMT can be met and changed
The requirement of gear strategy.
The technical scheme that the present invention takes is as follows：
A kind of computational methods for AMT complete vehicle qualities, first basisComplete vehicle quality M is calculated, in formula：
M- complete vehicle qualities, F- driving forces, a- acceleration；F- resistance coefficients, are then averaged the complete vehicle quality M that collection is repeatedly calculated
Value, real-time Transmission is to AMT, it is ensured that gearshift performance it is accurate.
Further, the collection of data is carried out Jing after signal filtering process.
Further, the method that the signal filtering is filtered using recurrence average.
Further, it is assumed that accelerator is even accelerator, the acceleration is calculated according to below equation：
In formula：A- acceleration, V1- in T1The speed of moment collection, V2- in T2The speed of moment collection.
Further, accelerator identification, the foundation of the accelerator identification were carried out first before acceleration a is calculated
It is the speed size of the speed with previous collection of current collection；
If accelerator terminates, according to collection speed, acquisition time, calculated torque, acceleration, resistance coefficient,
Driving force, finally calculates complete vehicle quality, after being averaged according to the multiple complete vehicle quality for calculating, gathers each flag bit and returns
Zero, calculating process terminates；
If being in accelerator, circulation carries out moment of torsion summation, increases times of collection until collection flag bit zero.
Further, the driving force is calculated according to below equation：
In formula：F- driving forces；The moment of torsion of T- electromotors output；ig- transmission gear ratio；i0- base ratio；ηT- transmission effect
Rate；R- tire radius.
Further, the moment of torsion is calculated according to below equation：
T=(this.ActualEngPercentTorque-125) * 0.01*EngReferenceTorque
In formula：T- moments of torsion, this.ActualEngPercentTorque represents the actual torque percentage ratio of electromotor,
EngReferenceTorque represents the reference torque of electromotor.
Further, resistance coefficient is determined according to coefficient of rolling resistance with the product of correction factor, wherein rolling resistance
Force coefficient is calculated according to below equation：
fRoll=9.8* (0.0076+0.000056*ua)
In formula：fRoll- coefficient of rolling resistance, ua- actual vehicle speed.
Further, correction factor is determined by the rotating speed of throttle and electromotor.
Beneficial effect：Compared with prior art, a kind of computational methods for AMT complete vehicle qualities that the present invention is provided, it is first
The data for first gathering, for the data for gathering, according to computing formulaCarry out the calculating of complete vehicle quality, the meter
Calculation method has the quality that low cost, calculating speed are fast, can accurately draw AMT vehicles, and real-time update is transferred to AMT,
Disclosure satisfy that the requirement of AMT Shiftings.
Further, the collection of data is carried out Jing after signal filtering process, corresponding impurity is removed, is more accurately counted
According to making result of calculation accurate.
Further, the method for being filtered using recurrence average, there is good inhibitory action to PERIODIC INTERFERENCE, smoothness compared with
Height, result of calculation is accurate.
Further, accelerator accuracy of judgement, the close actual value of average quality of calculating, the speed of calculating, AMT
Need to accelerate a period of time in gear, have individual acquisition time at first in accelerator, when accelerator terminates
Also one acquisition time, calculate quality between the two collection points, that is, described accelerate a period of time in gear
Complete vehicle quality can just be calculated.
Further, resistance coefficient is determined by the product of coefficient of rolling resistance and correction factor so that the meter of complete vehicle quality
Calculate result more high precision.
Specific embodiment
Below with reference to specific embodiment, the present invention is further elaborated, it is described be explanation of the invention rather than
Limit.
Embodiment
A kind of computational methods for AMT complete vehicle qualities, computational methods Jing signal filterings first are processed, and gather rotating speed
And torque signal, accelerator identification is then carried out, the calculating of complete vehicle quality is finally carried out, by the result of calculation reality of complete vehicle quality
When be transferred to AMT.Comprise the following steps that：
(1) signal filtering
The method that signal filtering is filtered using recurrence average.
(2) accelerator identification
Speed of the speed of the foundation of accelerator identification currently collection more than previous collection；
If accelerator terminates, according to collection speed, acquisition time, calculated torque, acceleration, resistance coefficient,
Driving force, finally calculates complete vehicle quality, after being averaged according to the multiple complete vehicle quality for calculating, gathers each flag bit and returns
Zero, calculating process terminates；
If being in accelerator, circulation carries out moment of torsion summation, increases times of collection up to collection flag bit zero, then
Collection speed, time point, rotating speed and torque signal.
(3) calculating of complete vehicle quality
Complete vehicle quality is according to Newton's second law
F-Ff=M*a (1)
Derive：
F≈M*a+M*g*f (2)
Further derive complete vehicle quality computing formula：
In formula：M- complete vehicle qualities, F- driving forces, a- acceleration；F- resistance coefficients, the complete vehicle quality that collection is repeatedly calculated
Average, real-time Transmission is to AMT, it is ensured that gearshift performance it is accurate.
(4) calculating of acceleration
Hypothesis accelerator is even accelerator, and the acceleration is calculated according to below equation：
In formula：A- acceleration, V1- in T1The speed of moment collection, V2- in T2The speed of moment collection.
(5) calculating of driving force
Driving force is calculated according to below equation：
In formula：F- driving forces；The moment of torsion of T- electromotors output；ig- transmission gear ratio；i0- base ratio；ηT- transmission effect
Rate；R- tire radius.
(6) calculating of moment of torsion
For more accurately calculated torque, it is desirable to which clutch is to be fully engaged；Load under the current rotating speed of electromotor
(EngPercentLoadAtCurrentSpeed) it is more than 90%；Actual torque percentage ratio (this.ActualEngPercentTo
Rque) it is more than 50%, the moment of torsion is calculated according to below equation：
T=(this.ActualEngPercentTorque-125) * 0.01*EngReferenceTorque (6)
In formula：T- moments of torsion, this.ActualEngPercentTorque represents the actual torque percentage ratio of electromotor,
EngReferenceTorque represents the reference torque of electromotor.
(7) determination and amendment of resistance coefficient
Resistance coefficient is determined according to coefficient of rolling resistance with the product of correction factor, wherein coefficient of rolling resistance according to
Below equation is calculated：
fRoll=9.8* (0.0076+0.000056*ua) (7)
F=9.8* (0.0076+0.000056*ua)*fAmendment(Accelerator, Enginespeed) (8)
In formula：fRoll- coefficient of rolling resistance, ua- speed.
The present invention has good inhibitory action to PERIODIC INTERFERENCE using the method for recurrence average filtering, and smoothness is higher,
Result of calculation is accurate.Accelerator accuracy of judgement, the close actual value of average quality of calculating, the speed of calculating, as long as AMT
Accelerate a period of time just to calculate complete vehicle quality in gear, disclosure satisfy that the application in AMT control strategies.
Claims (9)
1. a kind of computational methods for AMT complete vehicle qualities, it is characterised in that：Basis firstCalculate car load matter
Amount M, in formula：M- complete vehicle qualities, F- driving forces, a- acceleration；F- resistance coefficients, the complete vehicle quality for then repeatedly calculating collection
M averages, and real-time Transmission is to AMT, it is ensured that gearshift performance it is accurate.
2. a kind of computational methods for AMT complete vehicle qualities according to claim 1, it is characterised in that：Jing signal filterings
The collection of data is carried out after process.
3. a kind of computational methods for AMT complete vehicle qualities according to claim 2, it is characterised in that：The signal filter
The method that ripple is filtered using recurrence average.
4. a kind of computational methods for AMT complete vehicle qualities according to claim 1, it is characterised in that：Hypothesis accelerated
Journey is even accelerator, and the acceleration is calculated according to below equation：
In formula：A- acceleration, V1- in T1The speed of moment collection, V2- in T2The speed of moment collection.
5. a kind of computational methods for AMT complete vehicle qualities according to claim 4, it is characterised in that：Accelerate calculating
Carry out accelerator identification before degree a first, the foundation of the accelerator identification is the speed of current collection and previous collection
Speed size；
If accelerator terminates, according to collection speed, acquisition time, calculated torque, acceleration, resistance coefficient, driving
Power, finally calculates complete vehicle quality, after averaging according to the multiple complete vehicle quality for calculating, gathers each flag bit zero, meter
Calculation process terminates；
If being in accelerator, circulation carries out moment of torsion summation, increases times of collection until collection flag bit zero.
6. a kind of computational methods for AMT complete vehicle qualities according to claim 1, it is characterised in that：The driving force
Calculated according to below equation：
In formula：F- driving forces；The moment of torsion of T- electromotors output；ig- transmission gear ratio；i0- base ratio；ηT- transmission efficiency；r-
Tire radius.
7. a kind of computational methods for AMT complete vehicle qualities according to claim 6, it is characterised in that：The moment of torsion root
Calculate according to below equation：
T=(this.ActualEngPercentTorque-125) * 0.01*EngReferenceTorque
In formula：T- moments of torsion, this.ActualEngPercentTorque represents the actual torque percentage ratio of electromotor,
EngReferenceTorque represents the reference torque of electromotor.
8. a kind of computational methods for AMT complete vehicle qualities according to claim 1, it is characterised in that：Resistance coefficient root
It is determined with the product of correction factor according to coefficient of rolling resistance, wherein coefficient of rolling resistance is calculated according to below equation：
fRoll=9.8* (0.0076+0.000056*ua)
In formula：fRoll- coefficient of rolling resistance, ua- actual vehicle speed.
9. a kind of computational methods for AMT complete vehicle qualities according to claim 8, it is characterised in that：Correction factor by
The rotating speed of throttle and electromotor determines.
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| CN201610946171.2A CN106564504A (en) | 2016-11-02 | 2016-11-02 | Computing method of AMT finished automobile mass |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310558A (en) * | 2017-05-12 | 2017-11-03 | 北汽福田汽车股份有限公司 | Measuring method, device and the vehicle of vehicle mass |
| CN107901916A (en) * | 2017-11-15 | 2018-04-13 | 康明斯天远（河北）科技有限公司 | A kind of vehicle load acquisition methods that need not be installed in addition with sensor |
| CN108189843A (en) * | 2017-12-28 | 2018-06-22 | 天津清智科技有限公司 | A kind of evaluation method of vehicle weight |
| CN108871788A (en) * | 2018-05-21 | 2018-11-23 | 吉林大学 | A kind of automatic transmission shift attribute test rack and its method of calibration and shift quality evaluation method |
| CN110514453A (en) * | 2019-08-30 | 2019-11-29 | 奇瑞商用车（安徽）有限公司 | A kind of new-energy automobile resistance of taxing processing method |
| CN111891133A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Vehicle mass estimation method and system adaptive to various road conditions |
| CN112590804A (en) * | 2020-12-23 | 2021-04-02 | 苏州挚途科技有限公司 | Load trajectory tracking method and device for unmanned vehicle |
| CN115009288A (en) * | 2022-07-19 | 2022-09-06 | 潍柴动力股份有限公司 | Method and device for determining vehicle weight |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310558A (en) * | 2017-05-12 | 2017-11-03 | 北汽福田汽车股份有限公司 | Measuring method, device and the vehicle of vehicle mass |
| CN107901916A (en) * | 2017-11-15 | 2018-04-13 | 康明斯天远（河北）科技有限公司 | A kind of vehicle load acquisition methods that need not be installed in addition with sensor |
| CN107901916B (en) * | 2017-11-15 | 2019-07-09 | 康明斯天远（河北）科技有限公司 | A kind of vehicle load acquisition methods without being installed in addition with sensor |
| CN108189843A (en) * | 2017-12-28 | 2018-06-22 | 天津清智科技有限公司 | A kind of evaluation method of vehicle weight |
| CN108871788A (en) * | 2018-05-21 | 2018-11-23 | 吉林大学 | A kind of automatic transmission shift attribute test rack and its method of calibration and shift quality evaluation method |
| CN108871788B (en) * | 2018-05-21 | 2019-07-26 | 吉林大学 | A kind of method of calibration of automatic transmission shift attribute test rack |
| CN110514453A (en) * | 2019-08-30 | 2019-11-29 | 奇瑞商用车（安徽）有限公司 | A kind of new-energy automobile resistance of taxing processing method |
| CN111891133A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Vehicle mass estimation method and system adaptive to various road conditions |
| CN112590804A (en) * | 2020-12-23 | 2021-04-02 | 苏州挚途科技有限公司 | Load trajectory tracking method and device for unmanned vehicle |
| CN115009288A (en) * | 2022-07-19 | 2022-09-06 | 潍柴动力股份有限公司 | Method and device for determining vehicle weight |
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