CN112378559B - Method for analyzing torque of pedal opening by VCU of automobile - Google Patents
Method for analyzing torque of pedal opening by VCU of automobile Download PDFInfo
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- CN112378559B CN112378559B CN202011237400.6A CN202011237400A CN112378559B CN 112378559 B CN112378559 B CN 112378559B CN 202011237400 A CN202011237400 A CN 202011237400A CN 112378559 B CN112378559 B CN 112378559B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a method for analyzing torque of pedal opening by a vehicle VCU (vehicle control unit), which comprises the steps of entering a verification mode of P gear when the pedal opening is verified to be 0%, pressing an emergency stop button to continuously press an ice and snow mode button for 5 times, and enabling two feet to leave the pedal; the voltage value u1 reported by the two pedal sensors and acquired by the ADC sampling PIN angle is converted into the opening degree of 0% in the program, and the value is stored in an eerom; when the opening of the check pedal is 0%, the check mode is counted as P gear, the emergency stop button is pressed for 10s, the ice and snow mode button is continuously pressed for at least 7 times, and the brake pedal and the accelerator pedal are simultaneously stepped on to the bottom; the voltage value u2 reported by the two pedal sensors acquired by the ADC sampling PIN angle is converted into the opening degree of 100% in the program and is stored in an eerom; the initial state of the accelerator pedal and the brake pedal is verified, and the pedal opening analysis accuracy is improved; the full-open state of the accelerator pedal and the brake pedal is verified, and the pedal analysis accuracy is improved.
Description
Technical Field
The invention relates to a VCU (vehicle control unit) of a new energy vehicle, in particular to a method for analyzing torque of the VCU of the vehicle on pedal opening.
Background
At the present stage, the whole vehicle controller is used as a whole vehicle brain, and a controller for interaction between a driver and a whole vehicle has an irreplaceable effect on the aspect of the whole vehicle controller, and is particularly important in the aspect of precision of acquiring the opening degrees of an accelerator pedal and a brake pedal to be used as the torque analysis input of the whole vehicle. The accelerator pedal and the brake pedal which are adopted in the market at present adopt a mode that a sensor collects a conversion voltage value of an analog opening, and the situation that the sampling range has deviation due to the difference of the pedal installation and the sensor and the like can occur.
(1) The initial position is displayed inaccurately;
(2) the termination location is inaccurate;
(3) the pedal opening and the vehicle speed are collected in the aspect of model verification, and the vehicle acceleration performance and the smoothness need to be carried out in the vehicle calibration process.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a method for analyzing torque of a pedal opening degree by a VCU of an automobile.
In order to realize the purpose, the following technical scheme is provided:
a method for analyzing torque of pedal opening by a vehicle VCU comprises the following steps:
s1: when the opening of the check pedal is 0%, entering a check mode to be P gear, pressing an emergency stop button, continuously pressing an ice and snow mode button for 5 times, and enabling two feet to leave the pedal;
s2: the voltage value u1 reported by the two pedal sensors and acquired by the ADC sampling PIN angle is converted into the opening degree of 0% in the program, and the value is stored in an eerom;
s3: when the opening of the check pedal is 0%, the check mode is counted as P gear, the emergency stop button is pressed for 10s, the ice and snow mode button is continuously pressed for at least 7 times, and the brake pedal and the accelerator pedal are simultaneously stepped on to the bottom;
s4: the voltage value u2 reported by the two pedal sensors acquired by the ADC sampling PIN angle is converted into the opening degree of 100% in the program and is stored in an eerom;
s5: and (3) calculating the opening degree: the initial test means that 0% of ADC sampling values are U1, 100% opening sampling values are U2, when a pedal is stepped on, the sampling voltage of the whole vehicle controller is U0, and the corresponding pedal opening is analyzed to be U0/(U2-U1) × 100%;
preferably, when the 0% opening check or the 100% opening check is adopted singly, the other state is kept unchanged.
Has the advantages that:
1. the initial state of the accelerator pedal and the brake pedal is verified, and the pedal opening analysis accuracy is improved;
2. the full-open state of the accelerator pedal and the brake pedal is verified, and the pedal analysis accuracy is improved;
3. increasing the input of the torque analysis pedal opening change rate and improving the driving smoothness of the vehicle;
4. the torque analysis opening change rate is increased, and the vehicle calibration change rate is reduced.
Drawings
FIG. 1 is a pedal opening analyzing module;
FIG. 2 is a torque resolution module;
FIG. 3 is a pedal 0 position initialization model;
fig. 4 shows an initialization model of the pedal 100 position.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
A method for analyzing torque of pedal opening by a vehicle VCU comprises the following steps:
s1: when the opening of the check pedal is 0%, entering a check mode to be P gear, pressing an emergency stop button, continuously pressing an ice and snow mode button for 5 times, and enabling two feet to leave the pedal;
s2: the voltage value u1 reported by the two pedal sensors and acquired by the ADC sampling PIN angle is converted into the opening degree of 0% in the program, and the value is stored in an eerom;
s3: when the opening of the check pedal is 0%, the check mode is counted as P gear, the emergency stop button is pressed for 10s, the ice and snow mode button is continuously pressed for at least 7 times, and the brake pedal and the accelerator pedal are simultaneously stepped on to the bottom;
s4: the voltage value u2 reported by the two pedal sensors acquired by the ADC sampling PIN angle is converted into the opening degree of 100% in the program and is stored in an eerom;
s5: and (3) calculating the opening degree: the initial test means that 0% of ADC sampling values are U1, 100% opening degree sampling values are U2, when a pedal is pressed down, the whole vehicle controller sampling voltage is U0, and corresponding pedal opening degree is analyzed to be U0/(U2-U1) × 100%.
When the 0% opening check or the 100% opening check is singly adopted, the other state is kept unchanged.
Modifying a torque analysis mode, and analyzing a larger torque than that under the same opening degree and vehicle speed to improve the vehicle acceleration performance when a driver quickly steps on an accelerator pedal; when a driver quickly steps on the brake pedal, the analyzed torque is larger than the brake torque of the same vehicle speed and pedal opening degree, and the driving performance of the vehicle can be better.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. A method for analyzing torque of pedal opening by a vehicle VCU is characterized by comprising the following steps:
s1: when the opening of the check pedal is 0%, entering a check mode to be P gear, pressing an emergency stop button, continuously pressing an ice and snow mode button for 5 times, and enabling two feet to leave the pedal;
s2: the voltage value u1 reported by the two pedal sensors and acquired by the ADC sampling PIN angle is converted into the opening degree of 0% in the program, and the value is stored in an eerom;
s3: when the opening of the check pedal is 0%, the check mode is counted as P gear, the emergency stop button is pressed for 10 seconds continuously, the ice and snow mode button is pressed for at least 7 times, and the brake pedal and the accelerator pedal are simultaneously stepped on to the bottom;
s4: the voltage value u2 reported by the two pedal sensors acquired by the ADC sampling PIN angle is converted into the opening degree of 100% in the program and is stored in an eerom;
s5: and (3) calculating the opening degree: in the initial test, namely 0% ADC sampling value is u1, 100% opening degree sampling value is u2, when the pedal is pressed, the whole vehicle controller sampling voltage is u0, and the corresponding pedal opening degree is analyzed to be u0/(u2-u1) × 100%.
2. The method of claim 1, wherein the other state is maintained when only the 0% open check or the 100% open check is used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237400.6A CN112378559B (en) | 2020-11-09 | 2020-11-09 | Method for analyzing torque of pedal opening by VCU of automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011237400.6A CN112378559B (en) | 2020-11-09 | 2020-11-09 | Method for analyzing torque of pedal opening by VCU of automobile |
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| CN112378559A CN112378559A (en) | 2021-02-19 |
| CN112378559B true CN112378559B (en) | 2022-03-29 |
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| CN113848006B (en) * | 2021-09-26 | 2024-02-06 | 上汽通用五菱汽车股份有限公司 | Acceleration demand torque MAP calibration method and device and readable storage medium |
Citations (4)
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| CN104859483A (en) * | 2014-05-23 | 2015-08-26 | 北汽福田汽车股份有限公司 | Torque correction coefficient calculation and torque analysis methods and systems for electric automobile |
| CN106853780A (en) * | 2015-12-08 | 2017-06-16 | 北汽福田汽车股份有限公司 | Electric automobile and its moment of torsion analytic method and moment of torsion resolution system |
| CN107344510A (en) * | 2017-07-14 | 2017-11-14 | 成都雅骏新能源汽车科技股份有限公司 | A kind of electric vehicle brake pedal signal analytic method |
| CN111038277A (en) * | 2019-11-04 | 2020-04-21 | 郑州意昂新能源汽车科技有限公司 | Calculation and processing method for opening degree of accelerator pedal of pure electric vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9938908B2 (en) * | 2016-06-14 | 2018-04-10 | GM Global Technology Operations LLC | System and method for predicting a pedal position based on driver behavior and controlling one or more engine actuators based on the predicted pedal position |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859483A (en) * | 2014-05-23 | 2015-08-26 | 北汽福田汽车股份有限公司 | Torque correction coefficient calculation and torque analysis methods and systems for electric automobile |
| CN106853780A (en) * | 2015-12-08 | 2017-06-16 | 北汽福田汽车股份有限公司 | Electric automobile and its moment of torsion analytic method and moment of torsion resolution system |
| CN107344510A (en) * | 2017-07-14 | 2017-11-14 | 成都雅骏新能源汽车科技股份有限公司 | A kind of electric vehicle brake pedal signal analytic method |
| CN111038277A (en) * | 2019-11-04 | 2020-04-21 | 郑州意昂新能源汽车科技有限公司 | Calculation and processing method for opening degree of accelerator pedal of pure electric vehicle |
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