CN107298035A - Vehicle driving torque computational methods - Google Patents
Vehicle driving torque computational methods Download PDFInfo
- Publication number
- CN107298035A CN107298035A CN201710360710.9A CN201710360710A CN107298035A CN 107298035 A CN107298035 A CN 107298035A CN 201710360710 A CN201710360710 A CN 201710360710A CN 107298035 A CN107298035 A CN 107298035A
- Authority
- CN
- China
- Prior art keywords
- torque
- motor
- driving torque
- max
- minimum value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000205 computational method Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000004364 calculation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000008092 positive effect Effects 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of vehicle driving torque computational methods, it is characterised in that：Comprise the following steps：Step A, the maximum driving torque of transmission system is compared with operator torque demands and minimum value is obtained；Step B, motor max. output torque and the minimum value that is obtained in step A are compared, minimum value is obtained；Step C, is contrasted ground minimum value three is obtained in motor can be transmitted under transmission system minimum delivered moment of torsion, current state minimal torque, step B, and takes the time output torque that maximum is motor；Step D, output torque value in step C is changed rate limitation, it is allowed to change in torque be each step-length 0.05Nm.The computational methods of the present invention are simple and convenient, can effectively realize the calculating of vehicle driving torque, substantially increase the precision of calculating, and stability in use is good and strong applicability, and practicality is good.
Description
Technical field
The invention belongs to electric vehicle engineering field, and in particular to a kind of vehicle driving torque computational methods.
Background technology
In electric automobile, vehicle driving torque is the important parameter of automobilism, in order to ensure the operation of electric automobile
Reliability is, it is necessary to calculate vehicle driving torque, and the computational accuracy of conventional art is relatively limited, so be difficult to meet market
Demand.
The content of the invention
Essence height and strong applicability and vehicle driving torque computational methods are calculated it is an object of the invention to provide one kind.
The technical scheme for realizing the object of the invention is a kind of vehicle driving torque computational methods, is comprised the following steps：
Step A, the maximum driving torque of transmission system is compared with operator torque demands and minimum value is obtained；
Step B, motor max. output torque and the minimum value that is obtained in step A are compared, minimum value is obtained；
Step C, by motor can be transmitted under transmission system minimum delivered moment of torsion, current state minimal torque, step B
Contrasted to ground minimum value three, and take the time output torque that maximum is motor；
Step D, output torque value in step C is changed rate limitation, it is allowed to change in torque be each step-length
0.05Nm。
In step, operator torque demands' calculation procedure is：
A1, by the current pedal aperture of driver and speed tabled look-up and obtained the driving torque of vehicle；
A2, torque are mainly tabled look-up by the current speed of operation of vehicle and obtain a value tq_brk, by brake pedal aperture and
Battery charge torque is modified to tq_brk, finally draws the motor braking moment of torsion under brake condition；
A3, driving torque and motor braking moment of torsion be added to obtain operator demand's moment of torsion.
In stepb,
Motor max. output torque is by formula：The ÷ n_act of tqMotorPMax=P_max × η × 9.550
Wherein：TqMotorPMax --- the motor max. output torque allowed under battery present output power；
The peak power that P_max --- battery can be provided；
η --- electric efficiency, is tabled look-up using motor speed and obtained；
The actual speed of n_act --- motor；
Obtain.
In the step C, the transmission capacity of transmission system is definite value, is exactly that the forward and reverse of transmission system can transmit most
Large torque, the transmission capacity of transmission system is the transmission capacity of the axle before main reducing gear.
The present invention has positive effect：The computational methods of the present invention are simple and convenient, can effectively realize vehicle driving torsion
The calculating of square, substantially increases the precision of calculating, and stability in use is good and strong applicability, and practicality is good.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein：
Fig. 1 is structural representation of the invention.
Embodiment
(embodiment 1)
Fig. 1 shows a kind of embodiment of the present invention, and wherein Fig. 1 is structural representation of the invention.
See Fig. 1, a kind of vehicle driving torque computational methods comprise the following steps：
Step A, the maximum driving torque of transmission system is compared with operator torque demands and minimum value is obtained；
Step B, motor max. output torque and the minimum value that is obtained in step A are compared, minimum value is obtained；
Step C, by motor can be transmitted under transmission system minimum delivered moment of torsion, current state minimal torque, step B
Contrasted to ground minimum value three, and take the time output torque that maximum is motor；
Step D, output torque value in step C is changed rate limitation, it is allowed to change in torque be each step-length
0.05Nm。
In step, operator torque demands' calculation procedure is：
A1, by the current pedal aperture of driver and speed tabled look-up and obtained the driving torque of vehicle；
A2, torque are mainly tabled look-up by the current speed of operation of vehicle and obtain a value tq_brk, by brake pedal aperture and
Battery charge torque is modified to tq_brk, finally draws the motor braking moment of torsion under brake condition；
A3, driving torque and motor braking moment of torsion be added to obtain operator demand's moment of torsion.
In stepb,
Motor max. output torque is by formula：The ÷ n_act of tqMotorPMax=P_max × η × 9.550
Wherein：TqMotorPMax --- the motor max. output torque allowed under battery present output power；
The peak power that P_max --- battery can be provided；
η --- electric efficiency, is tabled look-up using motor speed and obtained；
The actual speed of n_act --- motor；
Obtain.
In the step C, the transmission capacity of transmission system is definite value, is exactly that the forward and reverse of transmission system can transmit most
Large torque, the transmission capacity of transmission system is the transmission capacity of the axle before main reducing gear.
The present invention has positive effect：The computational methods of the present invention are simple and convenient, can effectively realize vehicle driving torsion
The calculating of square, substantially increases the precision of calculating, and stability in use is good and strong applicability, and practicality is good.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still falls within protection scope of the present invention.
Claims (4)
1. a kind of vehicle driving torque computational methods, it is characterised in that：Comprise the following steps：
Step A, the maximum driving torque of transmission system is compared with operator torque demands and minimum value is obtained；
Step B, motor max. output torque and the minimum value that is obtained in step A are compared, minimum value is obtained；
Step C, will obtain ground in motor can be transmitted under transmission system minimum delivered moment of torsion, current state minimal torque, step B
Minimum value three is contrasted, and takes the time output torque that maximum is motor；
Step D, output torque value in step C is changed rate limitation, it is allowed to change in torque be each step-length 0.05Nm.
2. vehicle driving torque computational methods according to claim 1, it is characterised in that：In step, operator torque
Demand calculation procedure is：
A1, by the current pedal aperture of driver and speed tabled look-up and obtained the driving torque of vehicle；
A2, torque are mainly tabled look-up by the current speed of operation of vehicle and obtain a value tq_brk, by brake pedal aperture and battery
Charge torque is modified to tq_brk, finally draws the motor braking moment of torsion under brake condition；
A3, driving torque and motor braking moment of torsion be added to obtain operator demand's moment of torsion.
3. vehicle driving torque computational methods according to claim 2, it is characterised in that：In stepb,
Motor max. output torque is by formula：The ÷ n_act of tqMotorPMax=P_max × η × 9.550
Wherein：TqMotorPMax --- the motor max. output torque allowed under battery present output power；
The peak power that P_max --- battery can be provided；
η --- electric efficiency, is tabled look-up using motor speed and obtained；
The actual speed of n_act --- motor；
Obtain.
4. vehicle driving torque computational methods according to claim 3, it is characterised in that：In the step C, transmission system
Transmission capacity be definite value, be exactly forward and reverse Max. torque that can be transmitted of transmission system, the transmission capacity of transmission system is
The transmission capacity of axle before main reducing gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360710.9A CN107298035A (en) | 2017-05-19 | 2017-05-19 | Vehicle driving torque computational methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360710.9A CN107298035A (en) | 2017-05-19 | 2017-05-19 | Vehicle driving torque computational methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107298035A true CN107298035A (en) | 2017-10-27 |
Family
ID=60138001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710360710.9A Pending CN107298035A (en) | 2017-05-19 | 2017-05-19 | Vehicle driving torque computational methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107298035A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554353A (en) * | 2017-08-25 | 2018-01-09 | 四川现代汽车有限公司 | A kind of vehicle torque control method of electric automobile |
| CN112706625A (en) * | 2021-01-28 | 2021-04-27 | 厦门金龙联合汽车工业有限公司 | Vehicle torque slope control method |
| CN113547929A (en) * | 2021-07-28 | 2021-10-26 | 东风汽车集团股份有限公司 | Motor torque capacity calculation method based on least square method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934743A (en) * | 2010-09-30 | 2011-01-05 | 重庆长安汽车股份有限公司 | Pure electric vehicle torque safety on-line monitoring method |
| CN104842818A (en) * | 2014-08-13 | 2015-08-19 | 北汽福田汽车股份有限公司 | Torque monitoring method and system thereof for electric automobiles |
| CN106314194A (en) * | 2015-06-26 | 2017-01-11 | 上海汽车集团股份有限公司 | Electric automobile power system output torque control method and device |
| CN107554353A (en) * | 2017-08-25 | 2018-01-09 | 四川现代汽车有限公司 | A kind of vehicle torque control method of electric automobile |
-
2017
- 2017-05-19 CN CN201710360710.9A patent/CN107298035A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934743A (en) * | 2010-09-30 | 2011-01-05 | 重庆长安汽车股份有限公司 | Pure electric vehicle torque safety on-line monitoring method |
| CN104842818A (en) * | 2014-08-13 | 2015-08-19 | 北汽福田汽车股份有限公司 | Torque monitoring method and system thereof for electric automobiles |
| CN106314194A (en) * | 2015-06-26 | 2017-01-11 | 上海汽车集团股份有限公司 | Electric automobile power system output torque control method and device |
| CN107554353A (en) * | 2017-08-25 | 2018-01-09 | 四川现代汽车有限公司 | A kind of vehicle torque control method of electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554353A (en) * | 2017-08-25 | 2018-01-09 | 四川现代汽车有限公司 | A kind of vehicle torque control method of electric automobile |
| CN112706625A (en) * | 2021-01-28 | 2021-04-27 | 厦门金龙联合汽车工业有限公司 | Vehicle torque slope control method |
| CN113547929A (en) * | 2021-07-28 | 2021-10-26 | 东风汽车集团股份有限公司 | Motor torque capacity calculation method based on least square method |
| CN113547929B (en) * | 2021-07-28 | 2023-02-28 | 东风汽车集团股份有限公司 | Motor torque capacity calculation method based on least square method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106515509B (en) | A kind of drive system and its torque distribution method of electric four-wheel drive automobile | |
| CN105034817B (en) | A kind of electric automobile regenerating brake control method based under multi-constraint condition | |
| CN102717714B (en) | Pure electric vehicle braking energy recovery control system and method based on DCT (Data Communication Terminal) | |
| CN106314204A (en) | Method and system for controlling torque of electric four-wheel-drive vehicle | |
| JP4985440B2 (en) | Regenerative braking status notification device | |
| WO2023030360A1 (en) | Method and apparatus for controlling output torque of vehicle, and electronic device and medium | |
| CN104590269A (en) | Hybrid power vehicle SOC preserved energy management method | |
| KR101575409B1 (en) | System and method for estimating regenerative braking of vehicle | |
| CN107554353A (en) | A kind of vehicle torque control method of electric automobile | |
| CN107298035A (en) | Vehicle driving torque computational methods | |
| CN105644546A (en) | Power generation control method for engine and driving motor of hybrid power bus | |
| CN112622634B (en) | Torque control method and system of electric automobile | |
| CN103818377A (en) | Engine control method and engine controller of hybrid electric vehicle | |
| BR112017011550B1 (en) | METHOD AND DEVICE FOR CONTROLLING POWER TRANSMISSION FOR A CRANE, AND PARALLEL TYPE OIL-HYDRAULIC HYBRID POWER CRANE | |
| CN105711440B (en) | A kind of vehicle reverses gear control method and system | |
| EP4347341A1 (en) | Method and system with selectable multimode control of regenerative braking torque limitation | |
| CN108583293B (en) | Brake feedback torque distribution method of new energy automobile and four-wheel drive control system thereof | |
| CN112428829B (en) | Braking energy feedback control method for electric automobile | |
| CN108569293B (en) | Method for diverting a desired torque | |
| CN112874508B (en) | Hybrid power assembly brake control method, device, equipment and storage medium | |
| CN112208345B (en) | Vehicle energy recovery control method, storage medium, and electronic device | |
| CN115179921A (en) | Vehicle control method and device, electronic equipment and storage medium | |
| CN107719131A (en) | A kind of electric vehicle brake force distribution method based on braking time identification | |
| CN104972930B (en) | Vehicle console device | |
| US11155182B2 (en) | Computing systems and methods for controlling current in vehicle motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171027 |
|
| WD01 | Invention patent application deemed withdrawn after publication |