CN113588287A - Vehicle acceleration performance testing and evaluating method - Google Patents
Vehicle acceleration performance testing and evaluating method Download PDFInfo
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- CN113588287A CN113588287A CN202110861514.6A CN202110861514A CN113588287A CN 113588287 A CN113588287 A CN 113588287A CN 202110861514 A CN202110861514 A CN 202110861514A CN 113588287 A CN113588287 A CN 113588287A
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- 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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- 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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a vehicle acceleration performance testing and evaluating method, which sets user common working conditions including a starting acceleration working condition and an overtaking acceleration working condition through user investigation, WLTC and CLTC standard working condition research and road speed limit regulation interpretation; and respectively carrying out vehicle speed test under the common working conditions: the upper controller sets the throttle opening a and corresponding start-stop speeds V1 and V2, sends control information to a vehicle controller to be tested through throttle opening control equipment, and controls the throttle opening through the vehicle controller; performing power spectrum analysis on the vehicle speed signal by using SPSS software, performing low-pass filtering on the vehicle speed signal by using Matlab software, smoothing a vehicle speed curve after filtering, and deriving the smoothed vehicle speed signal to obtain an acceleration signal; and finally, setting an acceleration performance evaluation index and carrying out performance evaluation. The method can objectively and accurately evaluate the vehicle acceleration under the common working condition of the user and can guide the development of the whole vehicle driving property.
Description
Technical Field
The invention relates to a method for testing and evaluating the acceleration performance of an automatic-transmission vehicle, in particular to a method for testing and evaluating the acceleration performance of a vehicle based on common working conditions of users.
Background
The vehicle acceleration performance refers to the acceleration capacity of the vehicle under different use conditions. At present, the evaluation of the vehicle acceleration performance at home and abroad mainly takes subjective evaluation as the main point. Subjective evaluation results vary from person to person, and even if the evaluation results vary in different states of the same person, the real acceleration performance of the vehicle cannot be objectively and accurately evaluated.
CN105466695B discloses a method and a device for detecting vehicle dynamic performance, the method includes acquiring driving parameters of a vehicle in a driving process; acquiring at least one detection parameter corresponding to the driving process according to the driving parameters; acquiring a power performance parameter corresponding to the driving process according to the at least one detection parameter; wherein the at least one detection parameter comprises one or more of the following parameters: a high speed performance parameter, an acceleration performance parameter, and a climbing performance parameter; if the at least one detection parameter comprises a high speed performance parameter, the driving parameter comprises: and the plurality of moments in the running process respectively correspond to the vehicle speeds. Therefore, the power performance of the vehicle is not calculated according to the inherent attribute theory of the vehicle, but a mode of detecting the power performance of the vehicle according to the running parameters of the vehicle in the use process is provided, so that the detection result can reflect the actual use condition better.
CN105352739A discloses a method and a system for determining vehicle dynamic performance, the method includes: obtaining a value of vehicle dynamic performance measured by a test vehicle at two or more ambient temperatures; according to the numerical value of the vehicle dynamic performance measured at two or more than two environmental temperatures, establishing and storing a linear relation between the vehicle dynamic performance of the test vehicle and the environmental temperatures; and if the input operation of the target environment temperature is detected, responding to the input operation, determining and displaying the numerical value of the vehicle dynamic performance at the target environment temperature according to the linear relation between the vehicle dynamic performance and the environment temperature, and establishing the linear relation between the vehicle dynamic performance of the test vehicle and the environment temperature to obtain the vehicle dynamic performance at the target environment temperature by utilizing the linear relation between the vehicle dynamic performance and the environment temperature without measuring the vehicle dynamic performance of the test vehicle at the target environment temperature.
Disclosure of Invention
The invention aims to objectively and accurately evaluate the dynamic property of a vehicle under a common working condition, and provides a vehicle acceleration performance test and evaluation method.
The purpose of the invention is realized by the following technical scheme:
a vehicle acceleration performance testing and evaluating method comprises the following steps:
step one, setting a common working condition of a user: setting common working conditions of a user, including a starting acceleration working condition and an overtaking acceleration working condition, through user research, WLTC and CLTC standard working condition research and road speed limit regulation interpretation;
step two, carrying out vehicle speed test under the common working condition set in the step one:
(1) the upper controller sets the throttle opening a and corresponding start-stop speeds V1 and V2, sends control information to a vehicle controller to be tested through throttle opening control equipment, and controls the throttle opening through the vehicle controller;
(2) and (3) testing the common starting acceleration condition: the initial vehicle speed V1 of the vehicle to be tested is 0; when the vehicle is in a static state, a tester looses a brake pedal, the accelerator opening control equipment outputs an analog signal of the accelerator opening a to the vehicle control unit, the vehicle control unit controls the engine control unit, and the vehicle starts and starts to accelerate; when the vehicle speed is accelerated to V2, the accelerator opening control equipment outputs an analog signal of accelerator opening 0 to the vehicle control unit, the vehicle stops supplying oil and enters a deceleration stage, and the accelerator opening control equipment records the driving vehicle speed data;
(3) the speed test under the common overtaking acceleration working condition comprises the following steps: a tester steps on an accelerator pedal of a tower, the accelerator pedal is released after the speed of a vehicle to be tested exceeds a certain value of V1, an accelerator opening control device is started, when the speed slides to V1, the accelerator opening control device outputs an analog signal of accelerator opening a to a vehicle controller, the vehicle starts to accelerate, and the running speed is recorded; when the vehicle accelerates to V2, the accelerator opening control equipment outputs an analog signal of the accelerator opening 0 to the vehicle control unit and records the running speed;
step three, vehicle speed data processing:
and performing power spectrum analysis on the vehicle speed signal by using SPSS software, performing low-pass filtering on the vehicle speed signal by using Matlab software, smoothing a vehicle speed curve after filtering, and performing derivation on the smoothed vehicle speed signal to obtain an acceleration signal.
Step four, evaluating the acceleration performance of the vehicle:
(1) setting the acceleration performance evaluation indexes including acceleration time T, acceleration delay time T0 and maximum acceleration amax；
(2) Acceleration performance evaluation rule: the smaller the acceleration time T, the better the acceleration. The smaller the acceleration delay time t0, the faster the acceleration response; the larger the maximum acceleration a is, the stronger the acceleration back-pushing feeling is.
Further, the user common working conditions set in the step one are specifically as follows:
starting acceleration working condition: the opening degree of the accelerator is 30%, and the vehicle speed is accelerated from 0 to 40 km/h;
overtaking acceleration working condition: the accelerator opening is 30%, and the vehicle speed is accelerated from 50km/h to 80 km/h.
Furthermore, the test device used in the second step comprises an accelerator opening control device, a GPS vehicle speed sensor and a superior controller; the accelerator opening degree control equipment is connected in series between an accelerator pedal of a vehicle to be tested and a bus of a whole vehicle controller butted with the accelerator pedal; the GPS vehicle speed sensor is arranged on the roof of the vehicle to be detected and is connected with the throttle opening control equipment through a data line; the upper controller is connected with the throttle opening control equipment WMS through a network cable.
Further, in the step of the two-vehicle speed test, the accelerator opening control device starts to record the driving vehicle speed data 1s before sending the accelerator opening signal.
Further, the acceleration performance evaluation index set in the fourth step is specifically:
acceleration time T, i.e., accelerator opening a, the time for which the vehicle speed accelerates from V1 to V2;
acceleration delay time t0, which is the time until the accelerator pedal is depressed until the vehicle acceleration reaches 0.05 g;
maximum acceleration amaxI.e., the maximum value of acceleration during acceleration of the vehicle speed from V1 to V2.
The invention has the following beneficial effects:
1. the vehicle acceleration performance testing and evaluating method provided by the invention provides an objective testing and evaluating method for subjective evaluation criteria of users, quantifies vehicle acceleration performance evaluation indexes under common working conditions, forms a set of complete testing method and evaluating mode, and can be applied to acceleration performance evaluation of various vehicle types.
2. According to the invention, the common working conditions of the user are set through user investigation, WLTC and CLTC standard working condition research and road speed limit regulation interpretation, and compared with the conventional evaluation results of a common limit test (such as a hundred kilometers acceleration test) of the acceleration performance, the vehicle acceleration performance is tested and evaluated under the common working conditions, so that the vehicle acceleration performance under the common driving conditions of the user can be evaluated more favorably, and the evaluation results are more objective, more convincing and more referential.
3. The invention further provides an evaluation index for evaluating the vehicle acceleration performance on the basis of setting the common working condition of the user, the provided evaluation index has a universal type, and the user or the vehicle manufacturer can set a specific evaluation value of the evaluation index according to different vehicle types to obtain the vehicle acceleration performance evaluation result.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a method for testing and evaluating acceleration performance of a vehicle includes the following steps:
step one, setting a common working condition of a user: setting common working conditions of a user, including a starting acceleration working condition and an overtaking acceleration working condition, through user research, WLTC and CLTC standard working condition research and road speed limit regulation interpretation;
step two, carrying out vehicle speed test under the common working condition set in the step one:
(1) the upper controller sets the throttle opening a and corresponding start-stop speeds V1 and V2, sends control information to a vehicle controller to be tested through throttle opening control equipment, and controls the throttle opening through the vehicle controller;
(2) and (3) testing the common starting acceleration condition: the initial vehicle speed V1 of the vehicle to be tested is 0; when the vehicle is in a static state, a tester looses a brake pedal, the accelerator opening control equipment outputs an analog signal of the accelerator opening a to the vehicle control unit, the vehicle control unit controls the engine control unit, and the vehicle starts and starts to accelerate; when the vehicle speed is accelerated to V2, the accelerator opening control equipment outputs an analog signal of accelerator opening 0 to the vehicle control unit, the vehicle stops supplying oil and enters a deceleration stage, and the accelerator opening control equipment records the driving vehicle speed data;
(3) the speed test under the common overtaking acceleration working condition comprises the following steps: a tester steps on an accelerator pedal of a tower, the accelerator pedal is released after the speed of a vehicle to be tested exceeds a certain value of V1, an accelerator opening control device is started, when the speed slides to V1, the accelerator opening control device outputs an analog signal of accelerator opening a to a vehicle controller, the vehicle starts to accelerate, and the running speed is recorded; when the vehicle accelerates to V2, the accelerator opening control equipment outputs an analog signal of the accelerator opening 0 to the vehicle control unit and records the running speed;
step three, vehicle speed data processing:
and performing power spectrum analysis on the vehicle speed signal by using SPSS software, performing low-pass filtering on the vehicle speed signal by using Matlab software, smoothing a vehicle speed curve after filtering, and performing derivation on the smoothed vehicle speed signal to obtain an acceleration signal.
Step four, evaluating the acceleration performance of the vehicle:
(1) setting the acceleration performance evaluation indexes including acceleration time T, acceleration delay time T0 and maximum acceleration amax；
(2) Acceleration performance evaluation rule: the smaller the acceleration time T, the better the acceleration. The smaller the acceleration delay time t0, the faster the acceleration response; the larger the maximum acceleration a is, the stronger the acceleration back-pushing feeling is.
Further, the user common working conditions set in the step one are specifically as follows:
starting acceleration working condition: the opening degree of the accelerator is 30%, and the vehicle speed is accelerated from 0 to 40 km/h;
overtaking acceleration working condition: the accelerator opening is 30%, and the vehicle speed is accelerated from 50km/h to 80 km/h.
Furthermore, the test device used in the second step comprises an accelerator opening control device, a GPS vehicle speed sensor and a superior controller; the accelerator opening degree control equipment is connected in series between an accelerator pedal of a vehicle to be tested and a bus of a whole vehicle controller butted with the accelerator pedal; the GPS vehicle speed sensor is arranged on the roof of the vehicle to be detected and is connected with the throttle opening control equipment through a data line; the upper controller is connected with the throttle opening control equipment WMS through a network cable.
Further, in the step of the two-vehicle speed test, the accelerator opening control device starts to record the driving vehicle speed data 1s before sending the accelerator opening signal.
Further, the acceleration performance evaluation index set in the fourth step is specifically:
acceleration time T, i.e., accelerator opening a, the time for which the vehicle speed accelerates from V1 to V2;
acceleration delay time t0, which is the time until the accelerator pedal is depressed until the vehicle acceleration reaches 0.05 g;
maximum acceleration amaxI.e., the maximum value of acceleration during acceleration of the vehicle speed from V1 to V2.
Example 1
A vehicle acceleration performance testing and evaluating method comprises the following steps:
firstly, setting the common working condition of the user
And setting the common working conditions of the user through user investigation, WLTC and CLTC standard working condition research and road speed limit regulation interpretation. Starting acceleration working condition: 30% of accelerator, accelerating the speed from 0 to 40km/h, and overtaking acceleration working condition: 30% of accelerator and 80km/h of vehicle speed from 50 km/h.
Second, vehicle speed testing method under common working condition
The accelerator opening degree control device VMS3400 is connected in series between an accelerator pedal and a whole vehicle wire harness in butt joint with the accelerator pedal. The GPS vehicle speed sensor is arranged on the vehicle roof, and the data line is connected to the equipment VMS. The notebook computer is connected to the WMS through a network cable.
The vehicle speed testing method under the common starting acceleration condition comprises the following steps: when the vehicle is at rest, the brake pedal is released, the operating button is pressed, and the WMS outputs an analog signal of 30% of the accelerator opening degree to the engine control unit. The speed of the vehicle is accelerated from 0 to 40km/h, and the VMS outputs an analog signal of the accelerator opening degree 0 to the engine control unit and records the running speed.
The method for testing the speed of the common overtaking acceleration working condition comprises the following steps: when the vehicle accelerates to 60km/h, the accelerator pedal is released, and the operation button is pressed. When the vehicle speed slides to 50km/h, the VMS outputs an analog signal of 30% of the accelerator opening degree to the engine control unit, and the vehicle starts to accelerate. When the vehicle accelerates to 80km/h, the VMS outputs an analog signal of the accelerator opening degree 0 to the engine control unit, and records the running vehicle speed.
Thirdly, vehicle speed data processing
And (3) performing power spectrum analysis on the vehicle speed signal by using SPSS software, performing low-pass filtering on the vehicle speed signal by using Matlab software, and smoothing a vehicle speed curve after filtering. And obtaining an acceleration signal by derivation of the smooth vehicle speed signal.
Fourth, vehicle acceleration performance evaluation method
Acceleration performance evaluation index:
the acceleration time T, namely the accelerator opening degree is 30%, the vehicle speed is accelerated from 0 to 40km/h, and the vehicle speed is accelerated from 50km/h to all time of 80 km/h.
Acceleration delay time t0, i.e., the time until the accelerator pedal is depressed until the vehicle acceleration reaches 0.05 g.
③ the maximum acceleration a, namely the maximum value of the acceleration in the process of accelerating the vehicle speed from 0 to 40km/h and accelerating the vehicle speed from 50km/h to 80 km/h.
The evaluation method rule is as follows: the smaller the acceleration time T, the better the acceleration. The smaller the acceleration delay time t0, the faster the acceleration response. The larger the maximum acceleration a is, the stronger the acceleration back-pushing feeling is.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A vehicle acceleration performance testing and evaluating method is characterized by comprising the following steps:
step one, setting a common working condition of a user: setting common working conditions of a user, including a starting acceleration working condition and an overtaking acceleration working condition, through user research, WLTC and CLTC standard working condition research and road speed limit regulation interpretation;
step two, carrying out vehicle speed test under the common working condition set in the step one:
(1) the upper controller sets the throttle opening a and corresponding start-stop speeds V1 and V2, sends control information to a vehicle controller to be tested through throttle opening control equipment, and controls the throttle opening through the vehicle controller;
(2) and (3) testing the common starting acceleration condition: the initial vehicle speed V1 of the vehicle to be tested is 0; when the vehicle is in a static state, a tester looses a brake pedal, the accelerator opening control equipment outputs an analog signal of the accelerator opening a to the vehicle control unit, the vehicle control unit controls the engine control unit, and the vehicle starts and starts to accelerate; when the vehicle speed is accelerated to V2, the accelerator opening control equipment outputs an analog signal of accelerator opening 0 to the vehicle control unit, the vehicle stops supplying oil and enters a deceleration stage, and the accelerator opening control equipment records the driving vehicle speed data;
(3) the speed test under the common overtaking acceleration working condition comprises the following steps: a tester steps on an accelerator pedal of a tower, the accelerator pedal is released after the speed of a vehicle to be tested exceeds a certain value of V1, an accelerator opening control device is started, when the speed slides to V1, the accelerator opening control device outputs an analog signal of accelerator opening a to a vehicle controller, the vehicle starts to accelerate, and the running speed is recorded; when the vehicle accelerates to V2, the accelerator opening control equipment outputs an analog signal of the accelerator opening 0 to the vehicle control unit and records the running speed;
step three, vehicle speed data processing: performing power spectrum analysis on the vehicle speed signal by using SPSS software, performing low-pass filtering on the vehicle speed signal by using Matlab software, smoothing a vehicle speed curve after filtering, and deriving the smoothed vehicle speed signal to obtain an acceleration signal;
step four, evaluating the acceleration performance of the vehicle:
(1) setting the acceleration performance evaluation indexes including acceleration time T, acceleration delay time T0 and maximum acceleration amax；
(2) Acceleration performance evaluation rule: the smaller the acceleration time T, the better the acceleration. The smaller the acceleration delay time t0, the faster the acceleration response; the larger the maximum acceleration a is, the stronger the acceleration back-pushing feeling is.
2. The vehicle acceleration performance testing and evaluating method according to claim 1, characterized in that the user common operating conditions set in the first step are specifically:
starting acceleration working condition: the opening degree of the accelerator is 30%, and the vehicle speed is accelerated from 0 to 40 km/h;
overtaking acceleration working condition: the accelerator opening is 30%, and the vehicle speed is accelerated from 50km/h to 80 km/h.
3. The vehicle acceleration performance testing and evaluating method according to claim 1, characterized in that the testing device used in the second step includes an accelerator opening control device, a GPS vehicle speed sensor and a superior controller; the accelerator opening degree control equipment is connected in series between an accelerator pedal of a vehicle to be tested and a bus of a whole vehicle controller butted with the accelerator pedal; the GPS vehicle speed sensor is arranged on the roof of the vehicle to be detected and is connected with the throttle opening control equipment through a data line; the upper controller is connected with the throttle opening control equipment WMS through a network cable.
4. The vehicle acceleration performance testing and evaluating method according to claim 1, characterized in that in the vehicle speed testing process of the second step, the accelerator opening control device starts to record the running vehicle speed data 1s before sending the accelerator opening signal.
5. The vehicle acceleration performance testing and evaluating method according to claim 1, characterized in that the acceleration performance evaluation index set in the fourth step is specifically:
acceleration time T, i.e., accelerator opening a, the time for which the vehicle speed accelerates from V1 to V2;
acceleration delay time t0, which is the time until the accelerator pedal is depressed until the vehicle acceleration reaches 0.05 g;
maximum acceleration amaxI.e., the maximum value of acceleration during acceleration of the vehicle speed from V1 to V2.
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| CN202110861514.6A CN113588287A (en) | 2021-07-29 | 2021-07-29 | Vehicle acceleration performance testing and evaluating method |
| CN202210711897.3A CN114993706A (en) | 2021-07-29 | 2022-06-22 | Method and system for evaluating objective indexes of vehicle drivability |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114323684A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Objective evaluation method and system for vehicle dynamic performance |
| CN114323685A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Objective evaluation method and system for vehicle reacceleration dynamic property and storage medium |
| CN114705450A (en) * | 2022-03-31 | 2022-07-05 | 重庆长安汽车股份有限公司 | Method for evaluating acceleration response performance of automatic transmission vehicle |
| CN114863587A (en) * | 2022-04-29 | 2022-08-05 | 一汽奔腾轿车有限公司 | Method for offline acquisition and evaluation of gear shifting rule of hydraulic mechanical automatic transmission |
| CN114993706A (en) * | 2021-07-29 | 2022-09-02 | 一汽奔腾轿车有限公司 | Method and system for evaluating objective indexes of vehicle drivability |
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| CN115453152B (en) * | 2022-09-30 | 2024-06-14 | 东风汽车集团股份有限公司 | Method, device and equipment for detecting automobile speedometer and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009104256A1 (en) * | 2008-02-20 | 2009-08-27 | パイオニア株式会社 | Operational evaluation device of vehicle, method, and computer program |
| CN106515688B (en) * | 2015-09-11 | 2019-01-04 | 苏州宝时得电动工具有限公司 | The intelligent barrier avoiding system and method for smart machine |
| CN106060258B (en) * | 2016-06-08 | 2020-02-14 | 合肥工业大学 | Driver driving style analysis method based on smart phone |
| CN113588287A (en) * | 2021-07-29 | 2021-11-02 | 一汽奔腾轿车有限公司 | Vehicle acceleration performance testing and evaluating method |
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- 2021-07-29 CN CN202110861514.6A patent/CN113588287A/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114993706A (en) * | 2021-07-29 | 2022-09-02 | 一汽奔腾轿车有限公司 | Method and system for evaluating objective indexes of vehicle drivability |
| CN114323684A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Objective evaluation method and system for vehicle dynamic performance |
| CN114323685A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Objective evaluation method and system for vehicle reacceleration dynamic property and storage medium |
| CN114705450A (en) * | 2022-03-31 | 2022-07-05 | 重庆长安汽车股份有限公司 | Method for evaluating acceleration response performance of automatic transmission vehicle |
| CN114863587A (en) * | 2022-04-29 | 2022-08-05 | 一汽奔腾轿车有限公司 | Method for offline acquisition and evaluation of gear shifting rule of hydraulic mechanical automatic transmission |
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