CN110667588A - Driver intention-based accelerator pedal opening correction control method for electric automobile - Google Patents
Driver intention-based accelerator pedal opening correction control method for electric automobile Download PDFInfo
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- CN110667588A CN110667588A CN201910969857.7A CN201910969857A CN110667588A CN 110667588 A CN110667588 A CN 110667588A CN 201910969857 A CN201910969857 A CN 201910969857A CN 110667588 A CN110667588 A CN 110667588A
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- Prior art keywords
- accelerator pedal
- opening
- correction
- change rate
- accelerator
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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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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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
-
- 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
- B60W40/08—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 drivers or passengers
Abstract
The invention relates to the field of vehicle control, in particular to an accelerator opening correction control method of an electric vehicle based on the intention of a driver. The method comprises the following steps of S1, calculating the accelerator pedal change rate based on the accelerator pedal opening: calculating an accelerator pedal change rate R by using a least square method according to the change of the accelerator pedal opening; s2, checking a two-dimensional table based on the change rate R of the accelerator pedal and the vehicle speed to obtain the correction grade of the accelerator pedal; and S3, checking the two-dimensional table according to the correction grade and the opening of the accelerator pedal to obtain the corrected opening of the accelerator pedal. The driver steps on the accelerator pedal rapidly at different speeds to obtain different corrected accelerator pedal values, the whole vehicle provides different torque responses, and the driving performance and the driving pleasure of the whole vehicle are improved.
Description
Technical Field
The invention relates to the field of vehicle control, in particular to an accelerator opening correction control method of an electric vehicle based on the intention of a driver.
Background
With the popularization of electric vehicles, the driving demand of consumers for electric vehicles is higher and higher, and under certain working conditions, a driver needs to accelerate rapidly after rapid deceleration (for example, enter a curve and then exit the curve, accelerate rapidly after rapid deceleration and the like), and the driver demand torque calculated by a single accelerator pedal opening value cannot meet the power demand of the driver under the working conditions, so that the accelerator pedal correction control based on the intention of the driver is provided.
Disclosure of Invention
In order to solve the above problems, a primary object of the present invention is to provide a method for controlling an electric vehicle to correct an accelerator pedal opening based on a driver's intention.
Which comprises the following steps:
s1, calculating the accelerator pedal change rate based on the accelerator pedal opening: calculating an accelerator pedal change rate R by using a least square method according to the change of the accelerator pedal opening;
s2, checking a two-dimensional table based on the change rate R of the accelerator pedal and the vehicle speed to obtain the correction grade of the accelerator pedal;
and S3, checking the two-dimensional table according to the correction grade and the opening of the accelerator pedal to obtain the corrected opening of the accelerator pedal.
In step S2, the specific steps include that the accelerator pedal correction level is divided into 10 levels, which are recorded as 0 to 9, 0 represents no correction, 9 represents the maximum correction ratio, and the larger the correction level is, the larger the accelerator pedal opening correction is; and when the change rate of the accelerator pedal calculated by releasing the accelerator pedal is smaller than a calibrated value of-25, checking the two-dimensional table of the correction level of the accelerator pedal by using the actual change rate of the accelerator pedal, otherwise, keeping the maximum value.
The invention has the beneficial effects that:
the driver steps on the accelerator pedal rapidly at different speeds to obtain different corrected accelerator pedal values, the whole vehicle provides different torque responses, and the driving performance and the driving pleasure of the whole vehicle are improved.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a pedal correction grade table obtained by looking up a two-dimensional table based on the vehicle NOR mode;
fig. 3 is a view showing the corrected accelerator opening degree obtained by looking up a two-dimensional table based on the correction level and the accelerator opening degree.
FIG. 4 shows the torque, speed and acceleration of the motor of the whole vehicle generated by the actual accelerator pedal;
FIG. 5 shows the torque, speed and acceleration of the motor of the whole vehicle generated by the corrected accelerator pedal.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings 1-5.
An accelerator opening correction control method of an electric vehicle based on driver intention is characterized by comprising the following steps:
s1, calculating the accelerator pedal change rate based on the accelerator pedal opening: calculating an accelerator pedal change rate R by using a least square method according to the change of the accelerator pedal opening;
s2, searching a two-dimensional table based on the change rate R of the accelerator pedal and the vehicle speed to obtain the correction grade of the accelerator pedal, wherein the specific method comprises the following steps:
dividing the correction grade of the accelerator pedal into 10 grades, recording the 10 grades as 0 to 9, wherein 0 represents no correction, 9 represents the maximum correction proportion, and the larger the correction grade is, the larger the correction of the opening of the accelerator pedal is; when the change rate of the accelerator pedal calculated by loosening the accelerator pedal is smaller than a calibrated value of minus 25, checking a two-dimensional table of the correction level of the accelerator pedal by using the actual change rate of the accelerator pedal, otherwise, keeping the maximum value;
for example, after the accelerator pedal is depressed, assuming that the calculated accelerator pedal change rate is 130 at the maximum, if the accelerator pedal is kept unchanged or slightly retracted, the calculated accelerator pedal change rate should be 0 or a negative smaller value), the calculated accelerator pedal change rate for checking the two-dimensional table of the accelerator pedal correction level is kept at the maximum 130; and when the accelerator pedal change rate calculated by releasing the accelerator pedal is smaller than a calibrated value of-25, checking the two-dimensional table of the correction level of the accelerator pedal by using the actual accelerator pedal change rate.
The table of fig. 1 is a table for looking up a two-dimensional table to obtain a pedal correction level based on a vehicle NOR mode, and vehicle power modes are generally classified into an Economy (ECO) mode, a comfort (NOR) mode, and a sport (PWR) mode. Calibrating different correction levels according to the driving performance of the whole vehicle under different vehicle speeds and different accelerator pedal change rates;
and S3, checking a two-dimensional table according to the correction grade and the opening of the accelerator pedal to obtain the corrected opening of the accelerator pedal, wherein the table in the figure 3 is used for checking the two-dimensional table to obtain the corrected opening of the accelerator pedal.
Fig. 4 and 5 show the torque, speed and acceleration of the motor of the whole vehicle generated by the actual accelerator pedal and the corrected accelerator pedal, respectively. It can be seen that the maximum value of the actual opening degree of the accelerator pedal is 60, the maximum value of the corrected opening degree of the accelerator pedal is 73.5, and the whole vehicle provides larger torque and acceleration in a low-speed section, so that the aim of providing correction of different opening degrees of the accelerator pedal based on the intention of a driver is achieved, the whole vehicle shows different torque responses, and the driving performance and the driving pleasure of the whole vehicle are improved.
Claims (2)
1. An accelerator opening correction control method of an electric vehicle based on driver intention is characterized by comprising the following steps:
s1, calculating the accelerator pedal change rate based on the accelerator pedal opening: calculating an accelerator pedal change rate R by using a least square method according to the change of the accelerator pedal opening;
s2, checking a two-dimensional table based on the change rate R of the accelerator pedal and the vehicle speed to obtain the correction grade of the accelerator pedal;
and S3, checking the two-dimensional table according to the correction grade and the opening of the accelerator pedal to obtain the corrected opening of the accelerator pedal.
2. The accelerator opening correction control method for an electric vehicle according to claim 1, characterized in that: in step S2, the specific steps include that the accelerator pedal correction level is divided into 10 levels, which are recorded as 0 to 9, 0 represents no correction, 9 represents the maximum correction ratio, and the larger the correction level is, the larger the accelerator pedal opening correction is; and when the change rate of the accelerator pedal calculated by releasing the accelerator pedal is smaller than a calibrated value of-25, checking the two-dimensional table of the correction level of the accelerator pedal by using the actual change rate of the accelerator pedal, otherwise, keeping the maximum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969857.7A CN110667588A (en) | 2019-10-12 | 2019-10-12 | Driver intention-based accelerator pedal opening correction control method for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969857.7A CN110667588A (en) | 2019-10-12 | 2019-10-12 | Driver intention-based accelerator pedal opening correction control method for electric automobile |
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| Publication Number | Publication Date |
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| CN110667588A true CN110667588A (en) | 2020-01-10 |
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| CN201910969857.7A Pending CN110667588A (en) | 2019-10-12 | 2019-10-12 | Driver intention-based accelerator pedal opening correction control method for electric automobile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111038283A (en) * | 2020-01-15 | 2020-04-21 | 江铃汽车股份有限公司 | Maximum speed limiting method of electric automobile based on acceleration advanced control |
| CN111038515A (en) * | 2020-01-15 | 2020-04-21 | 江铃汽车股份有限公司 | Electric automobile driving mode control method |
| CN111645689A (en) * | 2020-03-16 | 2020-09-11 | 摩登汽车有限公司 | Method and system for calculating total vehicle required torque |
| CN113173154A (en) * | 2020-08-21 | 2021-07-27 | 长城汽车股份有限公司 | Power distribution management method and device for hybrid vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038283A (en) * | 2020-01-15 | 2020-04-21 | 江铃汽车股份有限公司 | Maximum speed limiting method of electric automobile based on acceleration advanced control |
| CN111038515A (en) * | 2020-01-15 | 2020-04-21 | 江铃汽车股份有限公司 | Electric automobile driving mode control method |
| CN111038515B (en) * | 2020-01-15 | 2022-02-08 | 江铃汽车股份有限公司 | Electric automobile driving mode control method |
| CN111645689A (en) * | 2020-03-16 | 2020-09-11 | 摩登汽车有限公司 | Method and system for calculating total vehicle required torque |
| CN113173154A (en) * | 2020-08-21 | 2021-07-27 | 长城汽车股份有限公司 | Power distribution management method and device for hybrid vehicle |
| WO2022037597A1 (en) * | 2020-08-21 | 2022-02-24 | 长城汽车股份有限公司 | Power distribution management method and device for hybrid vehicle |
| CN113173154B (en) * | 2020-08-21 | 2022-04-22 | 长城汽车股份有限公司 | Power distribution management method and device for hybrid vehicle |
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Application publication date: 20200110 |