CN114427978A - Limiting method and system for opening degree of accelerator pedal - Google Patents
Limiting method and system for opening degree of accelerator pedal Download PDFInfo
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- CN114427978A CN114427978A CN202210111010.7A CN202210111010A CN114427978A CN 114427978 A CN114427978 A CN 114427978A CN 202210111010 A CN202210111010 A CN 202210111010A CN 114427978 A CN114427978 A CN 114427978A
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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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- 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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Abstract
The application relates to a limiting method and a limiting system for opening degree of an accelerator pedal. A Bingham fluid device is arranged between the floor of the vehicle to be tested and the accelerator pedal; the method comprises the following steps: acquiring target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through a Bingham fluid device; and under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point. Adopt this application can carry out spacingly through Bingham fluid device to accelerator pedal aperture to accomplish NVH capability test.
Description
Technical Field
The application relates to the technical field of automobile manufacturing, in particular to a limiting method and a limiting system for opening degree of an accelerator pedal.
Background
At present, in the NVH performance test stage, the POT working condition is a main means for identifying the noise and vibration problems of a vehicle in the acceleration process. Under the POT working condition, aiming at the test of different power points, a tester needs to determine the opening degree of an accelerator pedal corresponding to each power point, and the opening degree of the accelerator pedal is fixed through a limiting device. Current stop device includes hydraulic straight column type and yoke formula, and the main problem is not enough for stability, adjusts good back atress, has the displacement of certain degree to adjust the difficulty, need the tester bow to carry out distance adjustment many times, it is very inconvenient. Therefore, how to solve the problem of limiting the opening degree of the accelerator pedal so as to complete the NVH performance test becomes a problem which is most concerned by testers.
Disclosure of Invention
In view of the above, it is necessary to provide a method and a system for limiting the opening degree of an accelerator pedal.
In a first aspect, a method for limiting the opening degree of an accelerator pedal is provided, and is applied to a vehicle to be tested, wherein a Bingham fluid device is arranged between the floor of the vehicle to be tested and the accelerator pedal; the method comprises the following steps:
acquiring target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through a Bingham fluid device;
and under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point.
As an alternative embodiment, the acquiring the target accelerator pedal opening corresponding to each power point includes:
acquiring first vibration information corresponding to rated power in the process that the vehicle to be tested operates according to the rated power;
for each power point in the power points, determining second vibration information corresponding to the power point according to the power point, the rated power and the first vibration information;
and obtaining third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as the target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition.
As an optional implementation manner, the determining, for each of the power points, second vibration information corresponding to the power point according to the power point, the rated power, and the first vibration information includes:
and determining the ratio of each power point to the rated power according to each power point and the rated power, and taking the product of the ratio and the first vibration information as second vibration information corresponding to each power point in each power point.
As an alternative embodiment, the first vibration information includes a first drive train housing vibration frequency and a first drive train housing vibration amplitude, the second vibration information includes a second drive train housing vibration frequency and a second drive train housing vibration amplitude, and the third vibration information includes a third drive train housing vibration frequency and a third drive train housing vibration amplitude.
As an optional implementation manner, the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition, including:
and if the absolute value of the difference value between the vibration frequency of the third power assembly shell and the vibration frequency of the second power assembly shell is smaller than or equal to a preset frequency threshold value, and the absolute value of the difference value between the vibration amplitude of the third power assembly shell and the vibration amplitude of the second power assembly shell is smaller than or equal to a preset amplitude threshold value, judging that the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition.
In a second aspect, a limiting system of the opening degree of an accelerator pedal is provided, and the system comprises a Bingham fluid device and a testing device, wherein the Bingham fluid device and the testing device are arranged between the floor of a vehicle to be tested and the accelerator pedal; wherein,
the testing device is used for acquiring the target accelerator pedal opening corresponding to each power point and limiting the target accelerator pedal opening corresponding to the power point through the Bingham fluid device;
and the testing device is used for testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point under the working condition of separating a throttle valve Part (POT).
As an optional implementation manner, the testing apparatus is specifically configured to:
acquiring first vibration information corresponding to rated power in the process that the vehicle to be tested operates according to the rated power;
for each power point in the power points, determining second vibration information corresponding to the power point according to the power point, the rated power and the first vibration information;
and obtaining third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as the target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition.
As an optional implementation manner, the testing apparatus is specifically configured to:
and determining the ratio of each power point to the rated power according to each power point and the rated power, and taking the product of the ratio and the first vibration information as second vibration information corresponding to each power point in each power point.
As an optional implementation manner, the testing apparatus is specifically configured to:
the first vibration information comprises a first power assembly shell vibration frequency and a first power assembly shell vibration amplitude, the second vibration information comprises a second power assembly shell vibration frequency and a second power assembly shell vibration amplitude, and the third vibration information comprises a third power assembly shell vibration frequency and a third power assembly shell vibration amplitude.
As an optional implementation manner, the testing apparatus is specifically configured to:
and if the absolute value of the difference value between the vibration frequency of the shell of the third power assembly and the vibration frequency of the shell of the second power assembly is smaller than or equal to a preset frequency threshold value, and the absolute value of the difference value between the vibration amplitude of the shell of the third power assembly and the vibration amplitude of the shell of the second power assembly is smaller than or equal to a preset amplitude threshold value, judging that the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition.
The application provides a limiting method and a limiting system for the opening degree of an accelerator pedal, and the technical scheme provided by the embodiment of the application at least has the following beneficial effects: and a Bingham fluid device is arranged between the floor of the vehicle to be tested and the accelerator pedal. The method comprises the following steps: and acquiring the target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through the Bingham fluid device. And under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point. Adopt this application can carry out spacingly through Bingham fluid device to accelerator pedal aperture to accomplish NVH capability test.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a limiting method for an opening degree of an accelerator pedal according to an embodiment of the present disclosure;
FIG. 2 is a flowchart of a method for limiting an opening of an accelerator pedal according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a limiting system of an accelerator pedal opening degree according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for limiting the opening degree of the accelerator pedal provided by the embodiment of the application is described in detail below with reference to specific embodiments, and the method is applied to a vehicle to be tested, and a bingham fluid device is arranged between a floor of the vehicle to be tested and the accelerator pedal. Fig. 1 is a flowchart of a limiting method for an accelerator pedal opening degree provided in an embodiment of the present application, and as shown in fig. 1, the specific steps are as follows:
and 101, acquiring target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through a Bingham fluid device.
In implementation, a POT (partial Open Throttle) condition includes a plurality of test operating points, and each test operating point corresponds to a power point. The test equipment determines a power point corresponding to each test working condition point in the prestored corresponding relation between the working condition point and the power point for each test working condition point in each test working condition point of the vehicle to be tested. As shown in table one, the correspondence between the operating point and the power point is as follows (the correspondence between the operating point and the power point in table one is used for convenience of explanation, and is not limited to the following):
watch 1
The testing equipment obtains the target accelerator pedal opening corresponding to each power point (the specific step is step 201 and step 203), fixes the target accelerator pedal opening corresponding to the power point through the Bingham fluid device, and performs the NVH test under the condition of the target accelerator pedal opening corresponding to the power point. Among the prior art, the spacing system of accelerator pedal aperture includes: hydraulic stiles and wishbones. The main problems include: the stability is insufficient, and the stress can displace to a certain degree after the adjustment is finished; the mechanism is complex, and the arrangement between the pedal and the carpet is difficult; the adjustment is difficult, and the tester needs to bend down to adjust the distance for many times, which is very inconvenient. Therefore, the Bingham fluid device is adopted to limit the opening degree of the accelerator pedal.
It should be noted that the manner of limiting the accelerator pedal by the bingham fluid is various, and the application takes the magnetorheological property of the bingham fluid as an example. A Bingham fluid-like device or structure is arranged between the vehicle pedal and the floor, and the Bingham fluid has low viscosity and high fluidity and is similar to Newtonian fluid when no magnetic field exists. When a tester powers on the device or the structure, under the action of a strong magnetic field, suspended particles of Binhan fluid in the device are changed into strong magnetism from magnetic neutrality due to magnetic induction, interact with each other, form a chain-shaped bridge between magnetic poles, show high viscosity and low fluidity so as to achieve the hardness required by the test, are not easy to deform under stress, and play a good role in limiting.
And 102, under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point.
In implementation, the test equipment performs an NVH test according to the target accelerator pedal opening corresponding to each power point under the POT working condition.
As an alternative implementation manner, as shown in fig. 2, the specific steps of the test device obtaining the target accelerator pedal opening corresponding to each power point are as follows:
step 201, in the process that a vehicle to be tested operates according to rated power, first vibration information corresponding to the rated power is collected. The first vibration information includes a first powertrain housing vibration frequency and a first powertrain housing vibration amplitude.
In the implementation, in the process that a vehicle to be tested operates according to rated power, the testing equipment acquires first vibration information corresponding to the rated power. The first vibration information includes a first powertrain housing vibration frequency and a first powertrain housing vibration amplitude.
Step 202, for each power point in the power points, according to the power point, the rated power and the first vibration information, determining second vibration information corresponding to the power point. The second vibration information includes a second powertrain housing vibration frequency and a second powertrain housing vibration amplitude.
In implementation, the test equipment determines second vibration information corresponding to each power point according to the power point, the rated power and the first vibration information for each power point. The second vibration information includes a second powertrain housing vibration frequency and a second powertrain housing vibration amplitude.
Optionally, the specific step of determining, by the test device, second vibration information corresponding to each power point in the power points according to the power point, the rated power, and the first vibration information includes determining a ratio of each power point to the rated power according to each power point and the rated power, and taking a product of the ratio and the first vibration information as the second vibration information corresponding to each power point in the power points. For example: and if the rated power corresponds to the first vibration information, the second vibration information corresponding to the power point with 50% of rated power is equal to 50% of the first vibration information, the second vibration information corresponding to the power point with 30% of rated power is equal to 30% of the first vibration information, and the second vibration information corresponding to the power point with 10% of rated power is equal to 10% of the first vibration information.
And 203, acquiring third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as a target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition. And the third vibration information comprises a third power assembly shell vibration frequency and a third power assembly shell vibration amplitude.
In the implementation, second vibration information corresponding to the opening degree of each accelerator pedal of the vehicle to be tested is collected. It should be noted that, in the prior art, in the process of determining the target accelerator pedal opening corresponding to the test operating point, the test device measures the power of the engine under the current accelerator pedal opening, and then, in the pre-stored correspondence between the operating point and the power point, the test device queries the operating point corresponding to the power point of the engine under the current accelerator pedal opening, thereby establishing the correspondence between each test operating point of the vehicle to be tested and each accelerator pedal opening. However, the engine of the vehicle to be tested is classified into a turbo-charged type and a naturally aspirated type, and the test equipment can directly obtain the power of the turbo-charged type engine under each accelerator pedal opening condition. However, for a naturally aspirated vehicle type, the test equipment cannot directly acquire the power under the condition of the opening degree of each accelerator pedal, but acquires the power under the condition of the opening degree of each accelerator pedal by acquiring power data for multiple times and then correcting errors, so that the power acquisition is inconvenient. Compared with the power, the vibration information is data that can be directly acquired by the testing equipment, so in the embodiment of the application, the testing equipment does not acquire the power under the condition of the opening degree of each accelerator pedal, but acquires the third vibration information (including the vibration frequency of the shell of the third power assembly and the vibration amplitude of the shell of the third power assembly) under the condition of the opening degree of each accelerator pedal, so that the testing equipment can perform subsequent testing. The specific implementation method comprises the following steps: a tester treads an accelerator pedal of a vehicle to be tested, and a test device acquires the rotating speed of the engine of the vehicle to be tested corresponding to the current opening degree of the accelerator pedal. The test equipment can acquire the vibration frequency of the third power assembly shell according to the rotating speed of the engine, and then acquire the vibration amplitude of the third power assembly shell under the vibration frequency of the third power assembly shell. And determining the accelerator pedal opening with the third vibration information and the second vibration information meeting the preset proximity condition as the target accelerator pedal opening by the testing equipment in each accelerator pedal opening. And determining a power point corresponding to the second vibration information as a power point corresponding to the target accelerator pedal opening. And carrying out NVH test according to the target accelerator pedal opening corresponding to each power point.
As an alternative implementation manner, the specific step of the testing device determining whether the second vibration information corresponding to the power point satisfies the preset proximity condition is that if the absolute value of the difference between the vibration frequency of the third powertrain housing and the vibration frequency of the second powertrain housing is less than or equal to the preset frequency threshold, and the absolute value of the difference between the vibration amplitude of the third powertrain housing and the vibration amplitude of the second powertrain housing is less than or equal to the preset amplitude threshold, it is determined that the second vibration information corresponding to the power point satisfies the preset proximity condition.
In implementation, if the absolute value of the difference between the third powertrain shell vibration frequency and the second powertrain shell vibration frequency is less than or equal to the preset frequency threshold, and the absolute value of the difference between the third powertrain shell vibration amplitude and the second powertrain shell vibration amplitude is less than or equal to the preset amplitude threshold, it is determined that the second vibration information corresponding to the third vibration information and the power point satisfies the preset proximity condition.
The embodiment of the application provides a limiting method of the opening degree of an accelerator pedal, wherein a Bingham fluid device is arranged between a floor of a vehicle to be tested and the accelerator pedal; the method comprises the following steps: acquiring target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through a Bingham fluid device; and under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point. Adopt this application can carry out spacingly through Bingham fluid device to accelerator pedal aperture to accomplish NVH capability test.
It should be understood that although the steps in the flowcharts of fig. 1 and 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1 and 2 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
It is understood that the same/similar parts between the embodiments of the method described above in this specification can be referred to each other, and each embodiment focuses on the differences from the other embodiments, and it is sufficient that the relevant points are referred to the descriptions of the other method embodiments.
The embodiment of the application also provides a limiting system for the opening degree of the accelerator pedal; the system includes a bingham fluid device 310 and a testing device 320 disposed between a floor and an accelerator pedal of a vehicle to be tested; as shown in fig. 3, in which,
the testing device 320 is configured to obtain a target accelerator pedal opening corresponding to each power point, and limit the target accelerator pedal opening corresponding to the power point through the bingham fluid device 310.
And the testing device 320 is used for testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point under the working condition of separating the throttle valve Part (POT).
As an optional implementation manner, the testing device 320 is specifically configured to:
in the process that a vehicle to be tested runs according to the rated power, first vibration information corresponding to the rated power is collected.
And determining second vibration information corresponding to each power point according to the power point, the rated power and the first vibration information for each power point.
And obtaining third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as the target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition.
As an optional implementation manner, the testing device 320 is specifically configured to:
and determining the ratio of each power point to the rated power according to each power point and the rated power, and taking the product of the ratio and the first vibration information as second vibration information corresponding to each power point in each power point.
In an alternative embodiment, the first vibration information includes a first drive train housing vibration frequency and a first drive train housing vibration amplitude, the second vibration information includes a second drive train housing vibration frequency and a second drive train housing vibration amplitude, and the third vibration information includes a third drive train housing vibration frequency and a third drive train housing vibration amplitude.
As an optional implementation manner, the testing device 320 is specifically configured to:
and if the absolute value of the difference value between the vibration frequency of the third power assembly shell and the vibration frequency of the second power assembly shell is smaller than or equal to a preset frequency threshold value, and the absolute value of the difference value between the vibration amplitude of the third power assembly shell and the vibration amplitude of the second power assembly shell is smaller than or equal to a preset amplitude threshold value, judging that the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition.
The embodiment of the application provides a limiting system for the opening degree of an accelerator pedal. The system includes a bingham fluid device 310 and a testing device 320 disposed between a floor and an accelerator pedal of a vehicle to be tested; the testing device 320 is configured to obtain a target accelerator pedal opening corresponding to each power point, and limit the target accelerator pedal opening corresponding to the power point through the bingham fluid device. And the testing device 320 is used for testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point under the working condition of separating the throttle valve Part (POT). Adopt this application can carry out spacingly through Bingham fluid device to accelerator pedal aperture to accomplish NVH capability test.
For specific limitation of the limiting system of the accelerator pedal opening degree, reference may be made to the above limitation of the limiting method of the accelerator pedal opening degree, and details are not described herein again. All modules in the limiting system for the opening degree of the accelerator pedal can be completely or partially realized through software, hardware and a combination of the software and the hardware. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and bused dynamic RAM (RDRAM).
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be further noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for presentation, analyzed data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for limiting the opening degree of an accelerator pedal is characterized in that the method is applied to a vehicle to be tested, and a Bingham fluid device is arranged between the floor of the vehicle to be tested and the accelerator pedal; the method comprises the following steps:
acquiring target accelerator pedal opening corresponding to each power point, and limiting the target accelerator pedal opening corresponding to the power point through a Bingham fluid device;
and under the working condition of separating a throttle valve Part (POT), testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point.
2. The method according to claim 1, wherein the obtaining of the target accelerator pedal opening corresponding to each power point comprises:
acquiring first vibration information corresponding to rated power in the process that the vehicle to be tested runs according to the rated power;
for each power point in the power points, determining second vibration information corresponding to the power point according to the power point, the rated power and the first vibration information;
and obtaining third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as the target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition.
3. The method according to claim 2, wherein the determining, for each of the power points, second vibration information corresponding to the power point according to the power point, the rated power and the first vibration information comprises:
and determining the ratio of each power point to the rated power according to each power point and the rated power, and taking the product of the ratio and the first vibration information as second vibration information corresponding to each power point in each power point.
4. The method of claim 2, wherein the first vibration information includes a first powertrain casing vibration frequency and a first powertrain casing vibration amplitude, the second vibration information includes a second powertrain casing vibration frequency and a second powertrain casing vibration amplitude, and the third vibration information includes a third powertrain casing vibration frequency and a third powertrain casing vibration amplitude.
5. The method according to claim 2, wherein the second vibration information corresponding to the third vibration information and the power point satisfies a preset proximity condition, including:
and if the absolute value of the difference value between the vibration frequency of the third power assembly shell and the vibration frequency of the second power assembly shell is smaller than or equal to a preset frequency threshold value, and the absolute value of the difference value between the vibration amplitude of the third power assembly shell and the vibration amplitude of the second power assembly shell is smaller than or equal to a preset amplitude threshold value, judging that the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition.
6. A limiting system for the opening degree of an accelerator pedal is characterized by comprising a Bingham fluid device and a testing device, wherein the Bingham fluid device and the testing device are arranged between the floor of a vehicle to be tested and the accelerator pedal; wherein,
the testing device is used for acquiring the target accelerator pedal opening corresponding to each power point and limiting the target accelerator pedal opening corresponding to the power point through the Bingham fluid device;
the testing device is used for testing noise, vibration and harshness (NVH) according to the target accelerator pedal opening corresponding to each power point under the working condition of separating a throttle valve Part (POT).
7. The system of claim 6, wherein the testing device is specifically configured to:
acquiring first vibration information corresponding to rated power in the process that the vehicle to be tested operates according to the rated power;
for each power point in the power points, determining second vibration information corresponding to the power point according to the power point, the rated power and the first vibration information;
and obtaining third vibration information corresponding to the opening degree of each accelerator pedal, and determining the opening degree of each accelerator pedal as the target opening degree of each accelerator pedal corresponding to the power point when the second vibration information corresponding to the power point and the third vibration information meet a preset proximity condition.
8. The system of claim 7, wherein the testing device is specifically configured to:
and determining the ratio of each power point to the rated power according to each power point and the rated power, and taking the product of the ratio and the first vibration information as second vibration information corresponding to each power point in each power point.
9. The system of claim 7, wherein the testing device is specifically configured to:
the first vibration information comprises a first power assembly shell vibration frequency and a first power assembly shell vibration amplitude, the second vibration information comprises a second power assembly shell vibration frequency and a second power assembly shell vibration amplitude, and the third vibration information comprises a third power assembly shell vibration frequency and a third power assembly shell vibration amplitude.
10. The system of claim 7, wherein the testing device is specifically configured to:
and if the absolute value of the difference value between the vibration frequency of the third power assembly shell and the vibration frequency of the second power assembly shell is smaller than or equal to a preset frequency threshold value, and the absolute value of the difference value between the vibration amplitude of the third power assembly shell and the vibration amplitude of the second power assembly shell is smaller than or equal to a preset amplitude threshold value, judging that the second vibration information corresponding to the third vibration information and the power point meets a preset proximity condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111010.7A CN114427978B (en) | 2022-01-20 | 2022-01-20 | Limiting method and system for opening degree of accelerator pedal |
Applications Claiming Priority (1)
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493869A (en) * | 2011-11-14 | 2012-06-13 | 三一重工股份有限公司 | Power system and engineering machine |
| CN104210486A (en) * | 2014-08-13 | 2014-12-17 | 潍柴动力股份有限公司 | Electric energy control method and electric energy control system for hybrid power engineering machinery vehicle |
| CN105523020A (en) * | 2014-10-15 | 2016-04-27 | 福特全球技术公司 | System and method for brake pedal feel control |
| KR20170101536A (en) * | 2016-02-29 | 2017-09-06 | 전광섭 | Apparatus for Car's Drive Performance Test using Electronic type Accelerator Pedal |
| CN109030029A (en) * | 2018-08-09 | 2018-12-18 | 合肥工业大学 | Pass through the controller for automobile throttle pedal and method of noise testing for vehicle |
| CN110370942A (en) * | 2019-07-02 | 2019-10-25 | 四川野马汽车股份有限公司 | A kind of stroke-increasing electric automobile control method and device |
| CN209745572U (en) * | 2019-06-18 | 2019-12-06 | 东风小康汽车有限公司重庆分公司 | Opening controller of automobile throttle valve |
| CN111497628A (en) * | 2020-03-31 | 2020-08-07 | 南京航空航天大学 | Vehicle pedal force compensation system based on magnetorheological fluid and control method |
| CN111707351A (en) * | 2020-03-31 | 2020-09-25 | 桂林电子科技大学 | Abnormal position positioning method and system based on noise vibration source of truck chassis |
| CN112326267A (en) * | 2020-11-03 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Method and system for determining accelerated coarse acoustic effect result |
| CN113085810A (en) * | 2021-05-11 | 2021-07-09 | 重庆大学 | Pedal force sense simulation device based on magneto-rheological |
| CN113686596A (en) * | 2021-09-30 | 2021-11-23 | 蜂巢传动系统(江苏)有限公司保定研发分公司 | Noise testing device, noise testing method and vehicle |
-
2022
- 2022-01-20 CN CN202210111010.7A patent/CN114427978B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493869A (en) * | 2011-11-14 | 2012-06-13 | 三一重工股份有限公司 | Power system and engineering machine |
| CN104210486A (en) * | 2014-08-13 | 2014-12-17 | 潍柴动力股份有限公司 | Electric energy control method and electric energy control system for hybrid power engineering machinery vehicle |
| CN105523020A (en) * | 2014-10-15 | 2016-04-27 | 福特全球技术公司 | System and method for brake pedal feel control |
| KR20170101536A (en) * | 2016-02-29 | 2017-09-06 | 전광섭 | Apparatus for Car's Drive Performance Test using Electronic type Accelerator Pedal |
| CN109030029A (en) * | 2018-08-09 | 2018-12-18 | 合肥工业大学 | Pass through the controller for automobile throttle pedal and method of noise testing for vehicle |
| CN209745572U (en) * | 2019-06-18 | 2019-12-06 | 东风小康汽车有限公司重庆分公司 | Opening controller of automobile throttle valve |
| CN110370942A (en) * | 2019-07-02 | 2019-10-25 | 四川野马汽车股份有限公司 | A kind of stroke-increasing electric automobile control method and device |
| CN111497628A (en) * | 2020-03-31 | 2020-08-07 | 南京航空航天大学 | Vehicle pedal force compensation system based on magnetorheological fluid and control method |
| CN111707351A (en) * | 2020-03-31 | 2020-09-25 | 桂林电子科技大学 | Abnormal position positioning method and system based on noise vibration source of truck chassis |
| CN112326267A (en) * | 2020-11-03 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Method and system for determining accelerated coarse acoustic effect result |
| CN113085810A (en) * | 2021-05-11 | 2021-07-09 | 重庆大学 | Pedal force sense simulation device based on magneto-rheological |
| CN113686596A (en) * | 2021-09-30 | 2021-11-23 | 蜂巢传动系统(江苏)有限公司保定研发分公司 | Noise testing device, noise testing method and vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 谢东明;邱彬;刘建军;靳旗;张辉;: "ISO 362―1:2007在M1类车辆试验中的应用", 汽车技术, no. 11, 24 November 2009 (2009-11-24), pages 52 - 57 * |
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