CN110553850B - Control method and system for testing accelerator in vehicle drivability calibration of automatic transmission - Google Patents
Control method and system for testing accelerator in vehicle drivability calibration of automatic transmission Download PDFInfo
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- CN110553850B CN110553850B CN201810565957.9A CN201810565957A CN110553850B CN 110553850 B CN110553850 B CN 110553850B CN 201810565957 A CN201810565957 A CN 201810565957A CN 110553850 B CN110553850 B CN 110553850B
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
A method and a system for controlling a vehicle drivability calibration test throttle of an automatic transmission are provided, wherein the method comprises the following steps: and judging whether an accelerator pedal is operated, whether a brake pedal is operated, whether the vehicle reaches a preset vehicle speed and whether an external switch is opened, controlling the accelerator opening in a mode of controlling the accelerator opening by the accelerator pedal of the vehicle when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed and the external switch not being opened is met, otherwise, receiving an accelerator opening instruction, converting the accelerator opening instruction into an accelerator opening demand value, and automatically controlling the accelerator opening according to the accelerator opening demand value. The throttle control method and the throttle control system for the calibration test of the vehicle drivability of the automatic transmission can accurately control the throttle opening, realize the TCU calibration test of the whole vehicle in the actual driving process, automatically switch to the normal driving state at the same time, and ensure the driving safety under the complex road conditions.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a system for controlling an accelerator for calibrating and testing the drivability of an automatic transmission vehicle.
Background
In consideration of cost, reliability and technical implementation difficulty, a plurality of pressure, torque, temperature and position sensors cannot be arranged in a finished automobile or a power assembly, so that a plurality of key Control systems cannot completely realize closed-loop Control, most Control parameters used in a Control Unit (namely, a Transmission Control Unit) of the conventional automatic Transmission need to be calibrated by an engineer to perform online adjustment according to a finished automobile drivability target, namely, TCU finished automobile calibration.
In the TCU vehicle drivability calibration process, it is usually necessary to perform calibration tests on drivability under different driving conditions of the fixed accelerator. At present, the driving working condition operation of different fixed accelerators basically achieves the requirements of stability and precision of the accelerator through the driving experience of a calibration engineer, the requirements of a driver are extremely strict, the calibration engineer also needs to give consideration to the subjective evaluation of the driving performance in the driving process in the driving performance calibration process, and the calibration engineer is easy to cause the inaccuracy of evaluation and analysis in order to ensure the precision and the stability of the fixed accelerator. At present, two throttle control modes are provided, wherein the first mode is that a specific throttle position control device is designed and installed on a throttle pedal, and the stroke of the throttle pedal is fixed through a guy cable and a fixed rod so as to obtain different throttle opening degrees; and the second method is to precisely control the voltage signal of the accelerator pedal through an electronic accelerator signal generator so as to obtain the required accelerator opening. However, both of these methods cannot be switched to the accelerator pedal control accelerator opening method of the vehicle in real time according to the change of the driver's demand, and thus can be used only for the accelerator opening control in the vehicle test verification on the bench.
Disclosure of Invention
The invention aims to provide a method and a system for controlling an accelerator in a vehicle drivability calibration test of an automatic transmission, so that the accelerator can be accurately controlled according to the requirements of a calibration engineer in the driving process of the calibration test, and the safety in the calibration test process can be ensured.
A method for controlling a vehicle drivability calibration test throttle of an automatic transmission comprises the following steps:
and judging whether an accelerator pedal is operated, whether a brake pedal is operated, whether the vehicle reaches a preset vehicle speed and whether an external switch is opened, controlling the accelerator opening in a mode of controlling the accelerator opening by the accelerator pedal of the vehicle when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed and the external switch not being opened is met, otherwise, receiving an accelerator opening instruction, converting the accelerator opening instruction into an accelerator opening demand value, and automatically controlling the accelerator opening according to the accelerator opening demand value.
Further, the step of determining whether the accelerator pedal is operated, whether the brake pedal is operated, whether the vehicle reaches a preset vehicle speed, and whether the external switch is turned on, when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed, and the external switch not being turned on is achieved, controlling the accelerator opening in the accelerator pedal control accelerator opening mode, otherwise receiving the accelerator opening instruction specifically includes:
judging whether an accelerator pedal is operated, if so, controlling the accelerator pedal to control the accelerator opening in a mode of controlling the accelerator opening by the accelerator pedal of the vehicle, and if not, judging whether a brake pedal is operated;
if the brake pedal is operated, controlling the throttle opening in a mode that the throttle opening is controlled by the accelerator pedal of the vehicle, and if not, judging whether the vehicle reaches a preset speed or not;
if the vehicle reaches the preset speed, controlling the throttle opening in a mode of controlling the throttle opening by using an accelerator pedal of the vehicle, and if not, judging whether an external switch is turned on;
if the external switch is not opened, the throttle opening is controlled in a mode that the throttle opening is controlled by the accelerator pedal of the vehicle, and if the external switch is opened, the throttle opening instruction is received.
Further, the accelerator opening instruction is a voice input signal, and the step of receiving the accelerator opening instruction specifically comprises: and detecting whether voice input exists or not, if so, recognizing the voice input, and converting the accelerator opening instruction into an accelerator opening required value.
Further, the step of automatically controlling the throttle opening according to the throttle opening demand specifically includes: presetting an accelerator opening demand value table, judging whether the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, and automatically controlling the accelerator opening according to the converted accelerator opening demand value when the converted accelerator opening demand value corresponds to the value in the accelerator opening demand value table.
Further, when the accelerator opening degree demand value does not have a corresponding value in the accelerator opening degree demand value table, the operation of automatically controlling the accelerator opening degree is not executed, and the input of the accelerator opening degree command is prompted again.
Further, signals of whether an accelerator pedal is operated, whether a brake pedal is operated and whether the vehicle reaches a preset vehicle speed are acquired through a vehicle-mounted automatic diagnosis system, and the state of whether an external switch is turned on is acquired through a hard wire.
A vehicle drivability calibration test throttle control system for an automatic transmission comprises a control module and an input module, the control module is used for acquiring signals of whether an external switch is turned on, whether an accelerator pedal is operated, whether a brake pedal is operated and whether the vehicle speed reaches a preset vehicle speed, the control module controls the throttle opening in a mode of controlling the throttle opening by the accelerator pedal of the vehicle when any one of the conditions that the accelerator pedal is operated, the brake pedal is operated, the vehicle reaches a preset vehicle speed and the external switch is not turned on is met, the input module is used for identifying an accelerator opening instruction when an accelerator pedal is not operated, a brake pedal is not operated, a vehicle does not reach a preset vehicle speed and all conditions in the process that an external switch is turned on are met, and converting the accelerator opening instruction into an accelerator opening demand value and transmitting the accelerator opening demand value to the control module, wherein the control module is also used for automatically controlling the accelerator opening according to the accelerator opening demand value.
Further, an accelerator opening demand value table is preset in the control module, the control module judges whether the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, and when the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, the accelerator opening is automatically controlled according to the accelerator opening demand value.
Further, the input module is a voice input module, and the voice input module is used for detecting whether voice input exists or not, recognizing the voice input and converting the voice input into the accelerator opening degree required value.
Further, the control module is connected to the external switch and a vehicle-mounted automatic diagnosis system, and the vehicle-mounted automatic diagnosis system is used for acquiring signals of whether an accelerator pedal is operated, whether a brake pedal is operated and whether the vehicle speed reaches a preset vehicle speed and transmitting the signals to the control module.
The throttle control method and the system for the calibration test of the vehicle drivability of the automatic transmission can accurately control the throttle opening, realize the TCU whole vehicle calibration test in the actual driving process, and can automatically switch to the normal driving state of controlling the throttle opening by the throttle pedal when the throttle pedal is stepped down, the brake pedal is stepped down or the vehicle exceeds the preset vehicle speed, so that a driver can control the vehicle at any time, the driving safety under the complex road condition is ensured, the driver can concentrate on the subjective evaluation of the vehicle driving process and the driving condition, the TCU whole vehicle calibration efficiency is improved, and the calibration development period is shortened.
Drawings
FIG. 1 is a flow chart of a method for calibrating test throttle control for drivability of an automatic transmission vehicle in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of an automatic transmission vehicle driveability calibration test throttle control system according to an embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
As shown in fig. 1, a method for calibrating and testing the accelerator of an automatic transmission vehicle for the drivability of the automatic transmission according to a first embodiment of the present invention includes the following steps:
and S10, judging whether the accelerator pedal is operated, whether the brake pedal is operated, whether the vehicle reaches the preset vehicle speed and whether the external switch is turned on, controlling the accelerator pedal to control the accelerator opening in the accelerator pedal control accelerator opening mode when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed and the external switch not being turned on is met, and otherwise, entering the step S16.
Specifically, signals of whether the accelerator pedal is operated, whether the brake pedal is operated, and whether the vehicle reaches a preset vehicle speed can be acquired by an On Board Diagnostics (OBD), and a state of whether the external switch is turned On is acquired by a hard wire. The accelerator opening control mode of the vehicle is an accelerator control mode in which the accelerator opening is controlled by the driver stepping on the accelerator pedal.
S16, whether there is voice input is detected, if yes, the process goes to step S17. Of course, the voice input can be replaced by other input modes, such as keyboard input or touch screen input, so as to input the accelerator opening instruction. Compared with other input modes, the voice input does not need the hands of a driver to operate, only needs pronunciation, is not only very convenient, and further ensures the driving safety.
And S17, recognizing the voice input and converting the voice input into the accelerator opening degree demand value. The accelerator opening degree demand value may be, for example, 10%, 20%, 30%. 95%, etc., and if the voice input is "30", the system recognizes the voice input and converts the voice input into the accelerator opening degree demand value of 30% of the maximum opening degree of the open accelerator. When the accelerator pedal is used for inputting, the accelerator pedal can be pressed to input an accelerator opening demand value, and when the accelerator pedal is pressed to input, the accelerator pedal can be pressed to input an accelerator opening demand value. In this embodiment, the accuracy of speech recognition in the speech recognition module should exceed 95%, and the response time of the speech recognition result is less than 200 ms.
And S18, automatically controlling the throttle opening according to the throttle opening demand value. Specifically, an accelerator opening demand value table may be preset in the system, and it is determined whether the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, and when the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, the accelerator opening is automatically controlled according to the accelerator opening demand value; when the converted accelerator opening demand value has no corresponding value in the accelerator opening demand value table, the action of automatically controlling the accelerator opening is not executed, and the system prompts to perform voice input again.
Specifically, step S10 includes the steps of:
s11, judging whether the accelerator pedal is operated, if yes, going to step S12, if no, going to step S13. Specifically, the accelerator pedal may be considered to be operated when the accelerator pedal is depressed.
And S12, controlling the throttle opening in a mode that the throttle opening is controlled by the accelerator pedal of the vehicle. At this time, the opening of the automobile accelerator is directly controlled by the driver stepping on the accelerator pedal, and the automobile enters a normal automobile driving state.
S13, judging whether the brake pedal is operated, if yes, going to step S12, if no, going to step S14. Specifically, the brake pedal may be considered to be operated when the brake pedal is depressed.
S14, judging whether the vehicle reaches the preset speed, if yes, going to step S12, if no, going to step S15. The preset speed is the preset test highest speed of the vehicle, and when the preset speed is reached, the accelerator opening is controlled by an accelerator pedal of the vehicle.
S15, judging whether the external switch is on, if yes, going to step S16, if no, going to step S12. The external switch is a switch for controlling the automatic control mode of opening or closing the accelerator opening, and the automatic control of the accelerator opening can be realized only by opening the external switch.
It is understood that the above steps S11, S13, S14 and S15 do not require a sequential order, and the order may be changed or performed simultaneously.
In the method for controlling the accelerator for the calibration test of the vehicle drivability of the automatic transmission, the control of the accelerator opening degree has two control modes, one mode is to convert the input voice into a required value of the accelerator opening degree and control the accelerator opening degree according to the value, so as to realize the automatic control of the accelerator opening degree, and the other mode is to control the accelerator opening degree through an accelerator pedal of the vehicle.
The throttle control method for the calibration test of the vehicle driving performance of the automatic transmission can accurately control the throttle opening, realize the TCU whole vehicle calibration test in the actual driving process, and simultaneously can automatically switch to the normal driving state of controlling the throttle opening by the throttle pedal when the throttle pedal is stepped down, the brake pedal is stepped down or the vehicle exceeds the preset vehicle speed, so that a driver can control the vehicle at any time, the driving safety under the complex road condition is ensured, the driver can concentrate on the subjective evaluation of the vehicle driving process and the driving working condition, the TCU whole vehicle calibration efficiency is improved, and the calibration development period is shortened.
As shown in fig. 2, the invention further provides an accelerator control system for calibrating and testing the drivability of an automatic transmission vehicle, which comprises a control module 10 and an input module 12, wherein the control module 10 is connected to an external switch 13 and an on-board automatic diagnosis system 15 to obtain signals of whether the external switch 13 is turned on, whether an accelerator pedal is operated, whether a brake pedal is operated, and whether a vehicle speed reaches a preset vehicle speed, and the control module 10 controls the accelerator opening in a manner of controlling the accelerator opening by the accelerator pedal of the vehicle when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed, and the external switch not being turned on is achieved. The input module 12 is configured to recognize an accelerator opening command when the accelerator pedal is not operated, the brake pedal is not operated, the vehicle does not reach a preset vehicle speed, and all conditions in which the external switch is turned on are met, convert the accelerator opening command into an accelerator opening demand value, and transmit the accelerator opening demand value to the control module 10. The control module 10 is also used for automatically controlling the throttle opening according to the throttle opening demand value. The vehicle-mounted automatic diagnosis system 15 is configured to obtain signals indicating whether an accelerator pedal is operated, whether a brake pedal is operated, and whether a vehicle speed reaches a preset vehicle speed, and transmit the signals to the control module 10.
Specifically, the accelerator pedal may be considered to be operated when the accelerator pedal is depressed. When the throttle opening is controlled in a mode that the throttle opening is controlled by a vehicle throttle pedal, the throttle opening of the automobile is directly controlled by a driver stepping on the throttle pedal, and the automobile enters a conventional automobile driving state. The brake pedal may be considered to be operated when the brake pedal is depressed. The external switch is a switch for controlling the automatic control mode of opening or closing the accelerator opening, and the automatic control of the accelerator opening can be realized only by opening the external switch. An accelerator opening demand value table can be preset in the control module 10, and when the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, the accelerator opening is automatically controlled according to the accelerator opening demand value; when the converted accelerator opening demand value has no corresponding value in the accelerator opening demand value table, the action of automatically controlling the accelerator opening is not executed, and the system prompts the user to input voice.
The input module 12 may be a voice input module for detecting whether there is a voice input, recognizing the voice input, and converting it into a throttle opening demand value. Of course, the voice input module can be replaced by other input modules, such as a keyboard input module or a touch screen input module. The accelerator opening degree demand value may be, for example, 10%, 20%, 30%. 95%, etc., and if the voice input is "30", the system recognizes the voice input and converts the voice input into the accelerator opening degree demand value of 30% of the maximum opening degree of the open accelerator. When the accelerator pedal is used for inputting, the accelerator pedal can be pressed to input an accelerator opening demand value, and when the accelerator pedal is pressed to input, the accelerator pedal can be pressed to input an accelerator opening demand value. In this embodiment, the accuracy of speech recognition in the speech recognition module should exceed 95%, and the response time of the speech recognition result is less than 200 ms.
The accelerator control system for the automatic transmission vehicle driving performance calibration test can accurately control the accelerator opening, realize TCU whole vehicle calibration test in the actual driving process, and automatically switch to the normal driving state of controlling the accelerator opening by the accelerator pedal when the accelerator pedal is stepped down, the brake pedal is stepped down or the vehicle exceeds the preset vehicle speed, so that a driver can control the vehicle at any time, the driving safety under the complex road condition is ensured, the driver can concentrate on the vehicle driving process and the subjective evaluation of the driving condition, the TCU whole vehicle calibration efficiency is improved, and the calibration development period is shortened.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A method for controlling a vehicle drivability calibration test throttle of an automatic transmission is characterized by comprising the following steps:
judging whether an accelerator pedal is operated, whether a brake pedal is operated, whether a vehicle reaches a preset vehicle speed and whether an external switch is opened, controlling the accelerator opening in a mode of controlling the accelerator opening by the accelerator pedal of the vehicle when any one of the conditions of the accelerator pedal is operated, the brake pedal is operated, the vehicle reaches the preset vehicle speed and the external switch is not opened is met, otherwise, receiving an accelerator opening instruction, converting the accelerator opening instruction into an accelerator opening demand value, and automatically controlling the accelerator opening according to the accelerator opening demand value, wherein the accelerator opening instruction is voice input, keyboard input or touch screen input, and the step of automatically controlling the accelerator opening according to the accelerator opening demand value is specifically: presetting an accelerator opening demand value table, judging whether the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, and automatically controlling the accelerator opening according to the converted accelerator opening demand value when the converted accelerator opening demand value corresponds to the value in the accelerator opening demand value table.
2. The method as claimed in claim 1, wherein the step of determining whether an accelerator pedal is operated, whether a brake pedal is operated, whether the vehicle reaches a preset vehicle speed, and whether an external switch is turned on, when any one of the conditions of the accelerator pedal being operated, the brake pedal being operated, the vehicle reaching the preset vehicle speed, and the external switch not being turned on is achieved, controlling the accelerator opening in the vehicle accelerator pedal control accelerator opening mode, otherwise, receiving the accelerator opening command specifically comprises:
judging whether an accelerator pedal is operated, if so, controlling the accelerator pedal to control the accelerator opening in a mode of controlling the accelerator opening by the accelerator pedal of the vehicle, and if not, judging whether a brake pedal is operated;
if the brake pedal is operated, controlling the throttle opening in a mode that the throttle opening is controlled by the accelerator pedal of the vehicle, and if not, judging whether the vehicle reaches a preset speed or not;
if the vehicle reaches the preset speed, controlling the throttle opening in a mode of controlling the throttle opening by using an accelerator pedal of the vehicle, and if not, judging whether an external switch is turned on;
if the external switch is not opened, the throttle opening is controlled in a mode that the throttle opening is controlled by the accelerator pedal of the vehicle, and if the external switch is opened, the throttle opening instruction is received.
3. The method for controlling the accelerator of the automatic transmission vehicle drivability calibration test according to claim 1, wherein when the accelerator opening command is a voice input signal, the step of receiving the accelerator opening command specifically comprises: and detecting whether voice input exists or not, if so, recognizing the voice input, and converting the accelerator opening instruction into an accelerator opening required value.
4. The automatic transmission vehicle drivability calibration test throttle control method as claimed in claim 1, wherein when the throttle opening degree demand value has no corresponding value in the throttle opening degree demand value table, the action of automatically controlling the throttle opening degree is not performed, prompting the input of the throttle opening degree command again.
5. The method for controlling the accelerator of the automatic transmission according to claim 1, wherein the signals of whether the accelerator pedal is operated, whether the brake pedal is operated, and whether the vehicle reaches the preset vehicle speed are obtained by an on-board automatic diagnosis system, and the on-state of the external switch is acquired by a hard line.
6. The throttle control system for the calibration test of the driveability of the automatic transmission vehicle is characterized by comprising a control module (10) and an input module (12), wherein the control module (10) is used for acquiring signals of whether an external switch (13) is opened, whether an accelerator pedal is operated, whether a brake pedal is operated and whether the vehicle speed reaches a preset vehicle speed, the control module (10) is also used for controlling the throttle opening in a mode of controlling the throttle opening by the accelerator pedal of the vehicle when any one of the conditions of the accelerator pedal is operated, the brake pedal is operated, the vehicle reaches the preset vehicle speed and the external switch is not opened is met, the input module (12) is used for identifying a throttle opening instruction when the accelerator pedal is not operated, the brake pedal is not operated, the vehicle does not reach the preset vehicle speed and the external switch is opened is met, converting the throttle opening instruction into a throttle opening demand value and transmitting the throttle opening demand value to the control module (10), the control module (10) is further used for automatically controlling the accelerator opening according to the accelerator opening demand value, the input module (12) is a voice input module, a keyboard or a touch screen, an accelerator opening demand value table is preset in the control module (10), the control module (10) judges whether the converted accelerator opening demand value corresponds to a value in the accelerator opening demand value table, and when the converted accelerator opening demand value corresponds to the value in the accelerator opening demand value table, the accelerator opening is automatically controlled according to the accelerator opening demand value.
7. The automatic transmission vehicle driveability calibration test throttle control system of claim 6, wherein said voice input module is adapted to detect voice input and recognize the voice input and convert it to a throttle opening demand value.
8. The automatic transmission vehicle drivability calibration test throttle control system as claimed in claim 6, wherein said control module (10) is connected to said external switch (13) and an on-board automatic diagnostic system (15), said on-board automatic diagnostic system (15) is used to obtain signals of whether an accelerator pedal is operated, whether a brake pedal is operated, and whether a vehicle speed reaches a preset vehicle speed, and transmit them to said control module (10).
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| CN114261280B (en) * | 2020-09-16 | 2023-09-05 | 广汽埃安新能源汽车有限公司 | Accelerator pedal self-adaption method, vehicle-mounted controller, automobile and storage medium |
| CN115214597B (en) * | 2022-03-16 | 2023-09-01 | 广州汽车集团股份有限公司 | Control method, device, medium and system of vehicle |
| CN114610002B (en) * | 2022-03-31 | 2023-12-26 | 东风汽车集团股份有限公司 | Bench calibration method and system for ACC system function |
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