CN113624434B - Test method and device for hybrid electric drive assembly - Google Patents
Test method and device for hybrid electric drive assembly Download PDFInfo
- Publication number
- CN113624434B CN113624434B CN202110839958.XA CN202110839958A CN113624434B CN 113624434 B CN113624434 B CN 113624434B CN 202110839958 A CN202110839958 A CN 202110839958A CN 113624434 B CN113624434 B CN 113624434B
- Authority
- CN
- China
- Prior art keywords
- vibration
- vibration sensor
- displacement
- electric drive
- drive assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010998 test method Methods 0.000 title claims description 9
- 238000012360 testing method Methods 0.000 claims abstract description 117
- 238000006073 displacement reaction Methods 0.000 claims abstract description 102
- 238000000034 method Methods 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000004590 computer program Methods 0.000 claims description 13
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 238000012827 research and development Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of vehicle engineering, in particular to a method and a device for testing a hybrid electric drive assembly, wherein the method comprises the following steps: in the process of performing accelerated vibration endurance test on the hybrid electric drive assembly, vibration data of each vibration sensor in N vibration sensors on the electric drive assembly and displacement of the vibration sensor at a ratchet wheel are obtained, wherein the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller and the vibration sensor at a driving motor, and N is an integer larger than 1; judging the vibration data and displacement of each vibration sensor; and if the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than the displacement threshold, determining that the electric drive assembly meets the set performance. The method improves the test efficiency of the hybrid power electric drive assembly, shortens the research and development period and greatly reduces the research and development cost.
Description
Technical Field
The invention relates to the technical field of vehicle engineering, in particular to a testing method and device of a hybrid electric drive assembly.
Background
Today, the hybrid electric drive assembly is tested in a high-speed parking performance test, a motor controller vibration test, a motor vibration test, and the like. However, existing testing methods are all implemented by performing a single test on a hybrid electric drive assembly. In actual development and verification work, a single testing method is adopted for the hybrid electric drive assembly, so that the difficulty in overall research and development testing of the hybrid electric drive assembly is increased, and the problem of low testing efficiency is caused.
Disclosure of Invention
According to the test method and the test device for the hybrid electric drive assembly, the technical problem that the test efficiency of the hybrid electric drive assembly is low in the prior art is solved, the test efficiency of the hybrid electric drive assembly is improved, the research and development period is shortened, and the technical effect of research and development cost is greatly reduced.
In a first aspect, an embodiment of the present invention provides a method for testing a hybrid electric drive assembly, including:
in the process of performing accelerated vibration endurance test on a hybrid electric drive assembly, vibration data of each vibration sensor in N vibration sensors on the electric drive assembly and displacement of the vibration sensor at a ratchet wheel are obtained, wherein the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller and the vibration sensor at a driving motor, and N is an integer larger than 1;
judging the vibration data and the displacement of each vibration sensor;
and if the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than a displacement threshold value, determining that the electric drive assembly meets the set performance.
Preferably, the test for accelerated vibration durability of the hybrid electric drive assembly comprises:
in the process of exciting the electric drive assembly through the test bench, controlling the electric drive assembly to perform cyclic vibration for set times, wherein the electric drive assembly is erected on the test bench;
and in the process of each cycle of vibration, controlling the vibration frequency of the electric drive to increase from a first set frequency to a second set frequency, and then reducing from the second set frequency to the first set frequency, wherein the second set frequency is larger than the first set frequency.
Preferably, the determining the vibration data of each vibration sensor includes:
obtaining a vibration relative value of each vibration sensor according to the vibration data of each vibration sensor and the vibration data of the vibration sensor at the bracket; the vibration sensor at the bracket is arranged at the tooling bracket on the test bench;
and judging the vibration relative value of each vibration sensor.
Preferably, the determining the vibration relative value of each vibration sensor includes:
if the vibration relative value of each vibration sensor is smaller than the resonance threshold value, determining that the vibration data of each vibration sensor does not meet the resonance condition;
and if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the resonance threshold value, determining that the corresponding component of the driving assembly of the vibration sensor has a fault, and stopping the accelerated vibration durability test.
Preferably, the determining the vibration relative value of each vibration sensor includes:
if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the alarm threshold value and the vibration relative value of the vibration sensor is smaller than the resonance threshold value, determining that the resonance risk exists in the part of the driving assembly corresponding to the vibration sensor, and sending alarm prompt information, wherein the alarm threshold value is smaller than the resonance threshold value.
Preferably, the determining the displacement includes:
obtaining the displacement according to vibration data of the vibration sensor at the ratchet wheel;
and judging the displacement.
Preferably, the determining the displacement includes:
if the displacement is smaller than the displacement threshold, determining that the driving assembly has no error gear engaging fault;
and if the displacement is not smaller than the displacement threshold, determining that the driving assembly has a wrong gear engaging fault.
Based on the same inventive concept, the second aspect of the present invention also provides a test device of a hybrid electric drive assembly, comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring vibration data of each vibration sensor in N vibration sensors on a hybrid electric drive assembly and displacement of the vibration sensor at a ratchet wheel in the process of performing accelerated vibration endurance test on the hybrid electric drive assembly, the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller and the vibration sensor at a driving motor, and N is an integer larger than 1;
the judging module is used for judging the vibration data and the displacement of each vibration sensor;
and the determining module is used for determining that the electric drive assembly meets the set performance if the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than a displacement threshold value.
Based on the same inventive concept, in a third aspect, the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of a method for testing a hybrid electric drive assembly when executing the program.
Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a method for testing a hybrid electric drive assembly.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in the embodiment of the application, the vibration data of each vibration sensor and the displacement of the vibration sensor at the ratchet wheel are obtained by performing an accelerated vibration endurance test on the hybrid electric drive assembly. And judging the electric drive assembly according to the data, and judging whether the vibration data of each vibration sensor meet the resonance condition or not and whether the displacement of the vibration sensor at the ratchet wheel is smaller than a displacement threshold value or not. When the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than the displacement threshold, determining that the electric drive assembly meets the set performance. Through the accelerated vibration endurance test, vibration data of each vibration sensor can be measured to not meet resonance conditions, the fact that the corresponding part of each vibration sensor does not have resonance phenomenon and displacement is smaller than a displacement threshold value is indicated, the fact that the electric drive assembly does not have error gear engagement phenomenon is indicated, test efficiency is improved, accuracy of test results is improved, test period is shortened, and test cost is saved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
FIG. 1 is a flow chart of the steps of a method for testing a hybrid electric drive assembly in an embodiment of the invention;
FIG. 2 illustrates a schematic structural diagram of a hybrid electric drive assembly in an embodiment of the present invention;
FIG. 3 illustrates another structural schematic of a hybrid electric drive assembly in an embodiment of the present invention;
FIG. 4 shows a block schematic of a test apparatus for a hybrid electric drive assembly in an embodiment of the invention;
fig. 5 shows a schematic structural diagram of a computer device in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
A first embodiment of the present invention provides a test method of a hybrid electric drive assembly, as shown in fig. 1, which is performed during an accelerated vibration durability test of the hybrid electric drive assembly. However, the hybrid electric drive assembly was subjected to accelerated vibration durability testing on a test bench. Therefore, in order to clearly understand the accelerated vibration durability test, it is necessary to first explain the relationship between the hybrid electric drive assembly and the test bench.
As shown in fig. 2, the hybrid electric drive assembly includes: a drive motor 201, a generator 202, a motor controller 203, a parking motor 204, a parking ratchet 205, a set of shaft teeth 206, a gearbox control unit 207, a first housing 208 with a cavity, a second housing 209 and a rear end cap 210. The first housing 208 and the rear cap 210 are joined to form a closed housing with a cavity. The first housing 208 is also connected to the second housing 209. The transmission control unit 207 is provided on the rear end cap 210. In the cavity of the first housing 208, there are provided a control drive motor 201, a generator 202, a parking motor 204, a parking ratchet 205, and a set of shaft teeth 206. Wherein, driving motor 201 and generator 202 set up side by side, and drive connection is connected with parking motor 204, and parking motor 204 passes through parking ratchet 205 and is connected with axle tooth group 206. A motor controller 203 is provided above the first housing 208, and the motor controller 203 is also connected to the driving motor 201 and the generator 202, respectively.
As shown in fig. 3, the hybrid electric drive assembly is mounted on the test bench, the second housing 209 of the electric drive assembly is connected with the tool holder 211 on the test bench, the rear end cap 210 of the electric drive assembly is connected with the suspension support base 212 on the test bench, and the electric drive assembly is supported by the tool holder 211 and the suspension support base 212 on the test bench, so that the electric drive assembly is mounted on the test bench. A suspension stress relief tool 213 is also mounted on the suspension support base 212 for relieving stress of the electric drive assembly.
The working principle of the test bench is that when the test bench vibrates, the test bench can drive the hybrid power total electric drive assembly to vibrate.
The following describes in detail the specific implementation steps of the testing method of the hybrid electric drive assembly provided in this embodiment with reference to fig. 1:
before step S101 is performed, it is necessary to understand the accelerated vibration durability test performed on the electric drive assembly of the hybrid.
Specifically, vibration sensors are mounted at the parking ratchet 205, at the parking motor 204, at the motor controller 203, and at the rotor of the drive motor 201 on the hybrid electric drive assembly. The vibration sensor is named after the corresponding components on the electric drive assembly. For example, the vibration sensor mounted at the parking ratchet 205 is named ratchet-position vibration sensor, the vibration sensor mounted at the parking motor 204 is named motor-position vibration sensor, the vibration sensor mounted at the motor controller 203 is named motor controller-position vibration sensor, and the vibration sensor mounted at the rotor of the drive motor 201 is named drive motor-position vibration sensor. A vibration sensor, named bracket vibration sensor, is also mounted on the tooling bracket 211 on the test bench.
The electric drive assembly is erected on the test bench, and after each vibration sensor is installed, the test bench is controlled to excite the electric drive assembly.
In the process of exciting the electric drive assembly through the test bench, controlling the electric drive assembly to perform cyclic vibration for set times, wherein the electric drive assembly is erected on the test bench; during each cycle of vibration, the vibration frequency of the electric drive is controlled to increase from a first set frequency to a second set frequency, and then to decrease from the second set frequency to the first set frequency, wherein the second set frequency is larger than the first set frequency.
In general, considering actual applications of the driving motor 201 and the engine, the number of times of setting the cyclic vibration is 1000 ten thousand times, the first setting frequency is 20Hz, the second setting frequency is 200Hz, and the number of times of setting, the first setting frequency and the second setting frequency can be set according to actual requirements, but the condition that the second setting frequency is greater than the first setting frequency needs to be satisfied. It should be noted that, the vibration frequency of the electric drive assembly is increased by the set step, or is decreased by the set step, or is increased and decreased irregularly, without limitation.
For example, the electric drive assembly is controlled to perform 1000 ten thousand cyclic vibrations by testing the gantry excitation electric drive assembly. During each cycle of vibration, the vibration frequency of the electric drive assembly is controlled to increase from 20Hz to 200Hz and decrease from 200Hz to 20Hz. In other words, the vibration process of the electric drive assembly is referred to as a cyclic vibration of the electric drive assembly with the vibration frequency of the electric drive assembly increasing from 20Hz to 200Hz and decreasing from 200Hz to 20Hz.
The accelerated vibration endurance test principle is as follows: the number of stress cycles to which a material is subjected becomes the fatigue life, which varies with the magnitude of the load, and is generally referred to in the engineering art as the endurance limit if the material is subjected to load cycles below a certain stress level without failing. In order to meet the design and use in engineering, the cycle number n=10 7 The corresponding stress value is taken as the endurance limit. Therefore, in this embodiment, 1000 ten thousand vibration cycles in each of the three directions of the assemblies X, Y and Z are selected, and the number of life cycles of the electric drive assembly is examined.
In this embodiment, the accelerated vibration endurance test is performed on the electric drive assembly according to the actual conditions of the drive motor 201 and the starting electrode in practical application, and no abnormal phenomenon of the electric drive assembly occurs at high frequency.
Step S101 is executed, in the process of performing accelerated vibration endurance test on the hybrid electric drive assembly, vibration data of each vibration sensor in N vibration sensors on the electric drive assembly and displacement of the vibration sensor at the ratchet wheel are obtained, wherein the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at the motor, the vibration sensor at the motor controller and the vibration sensor at the driving motor, and N is an integer larger than 1.
Specifically, during the accelerated vibration endurance test, vibration data of corresponding components are collected at each vibration sensor on the electric drive assembly and at the vibration sensor at the bracket when the electric drive assembly performs cyclic vibration. The N vibration sensors comprise at least one of a ratchet wheel vibration sensor, a motor controller vibration sensor and a driving motor vibration sensor. Next, the test method of the hybrid electric drive assembly of this embodiment is explained by using the preferred schemes of the ratchet wheel vibration sensor, the motor vibration sensor and the driving motor vibration sensor as N vibration sensors, and the test method of the scheme of adopting different vibration sensors is the same as the test method of the preferred scheme, and will not be described again.
In the accelerated vibration endurance test process, vibration data of a vibration sensor at the ratchet wheel, vibration data of a vibration sensor at the motor, vibration data of the vibration sensor at the motor controller, vibration data of the vibration sensor at the driving motor and displacement of the vibration sensor at the ratchet wheel are obtained. Wherein the vibration data refer to the vibration acceleration value of the corresponding component acquired by the vibration sensor, and the unit is m/s 2 。
In the embodiment, the vibration sensors are arranged at the parts of the electric drive assembly, each vibration sensor collects vibration data of the corresponding part, required data can be formed in real time and efficiently, single performance test is not required to be conducted on the parts of the electric drive assembly, test efficiency is improved, test period is shortened, and test cost is saved.
Next, step S102 is executed to determine vibration data and displacement of each vibration sensor.
Specifically, after the vibration data collected by each vibration sensor and the displacement of the vibration sensor at the ratchet are obtained, the vibration data of each vibration sensor and the displacement of the vibration sensor at the ratchet need to be determined at the same time.
The process of judging the vibration data of each vibration sensor is as follows:
obtaining a vibration relative value of each vibration sensor according to the vibration data of each vibration sensor and the vibration data of the vibration sensor at the support; wherein the vibration sensor at the bracket is arranged at the tool bracket 211 on the test bench; the vibration relative value of each vibration sensor is judged.
And if the vibration relative value of each vibration sensor is smaller than the resonance threshold value, determining that the vibration data of each vibration sensor does not meet the resonance condition. If the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the resonance threshold value, determining that the component of the electric drive assembly corresponding to the vibration sensor has a fault, and stopping the accelerated vibration endurance test. The resonance threshold is usually 6db, and may be set according to practical requirements.
If the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the alarm threshold value and the vibration relative value of the vibration sensor is smaller than the resonance threshold value, determining that the component of the electric drive assembly corresponding to the vibration sensor has resonance risk, and sending alarm prompt information. Wherein the alarm threshold is less than the resonance threshold. The alarm threshold is usually 3db, and can be set according to actual requirements, but the condition that the alarm threshold is smaller than the resonance threshold needs to be met.
Specifically, the vibration sensor at the bracket is mounted on the tool bracket 211 on the test bench, and the vibration data collected by the vibration sensor at the bracket is the vibration data of the test bench, which is also called a vibration excitation value. Vibration data of vibration sensor at bracket, using a Excitation value Expressed in m/s 2 。
The vibration data of each vibration sensor and the vibration data of the vibration sensor at the bracket are obtained by the formula (1).
Wherein a is Measurement value For the vibration data of each vibration sensor, S (db) is the vibration relative value of each vibration sensor.
When the vibration relative value of the vibration sensor is not smaller than the alarm threshold value and smaller than the resonance threshold value, namely 6db & gtS (db) & gtis & gt3 db & gtor more, the prompt information that the corresponding part of the vibration sensor has resonance risk is sent out. When the vibration relative value of each vibration sensor is smaller than the resonance threshold, that is, S (db) < 6db, it is indicated that no resonance phenomenon occurs at the corresponding part of each vibration sensor, and it is determined that the vibration data of each vibration sensor does not satisfy the resonance condition. When the vibration relative value of any one of the N vibration sensors is not smaller than the resonance threshold, namely S (db) is not less than 6db, the vibration sensor indicates that the corresponding part of the vibration sensor has resonance phenomenon, the fault of the corresponding part of the driving assembly of the vibration sensor is determined, and the accelerated vibration endurance test is stopped.
For example, during the accelerated vibration endurance test, vibration data a of the vibration sensor at the ratchet is acquired Measurement value 1 Vibration data a of vibration sensor at motor Measurement value 2 Vibration data a of vibration sensor at motor controller Measurement value 3 And vibration data a of vibration sensor at driving motor Measurement value 4 Vibration data a of vibration sensor at bracket Excitation value . Judging each vibration data, and obtaining a vibration relative value S1 of the vibration sensor at the ratchet wheel through a formula (1), namelyVibration data of vibration sensor at motor S2, vibration data of vibration sensor at motor controller S3 and vibration data of vibration sensor at driving motor S4.
When S1 < 6db, it indicates that the parking ratchet 205 corresponding to S1 does not have a resonance phenomenon, and it is determined that the parking ratchet 205 does not satisfy the resonance condition, and the parking ratchet 205 corresponding to S1 is normal during the accelerated vibration endurance test. When S1 is less than or equal to 3db and less than 6db, the risk of resonance of the parking ratchet 205 is indicated, and an alarm prompt is needed. When S1 is more than or equal to 6db, indicating that the parking ratchet wheel 205 has resonance phenomenon, determining that the parking ratchet wheel 205 meets resonance conditions, and stopping the acceleration vibration endurance test; further, whether the electric drive assembly is damaged or not is confirmed, a resonance source is determined, resonance caused by loosening of the installation of the electric drive assembly is checked, and the like.
When S2 is less than 6db, the fact that the parking motor 204 corresponding to S2 does not have resonance phenomenon is indicated, the fact that the parking motor 204 does not meet resonance conditions is determined, and the parking motor 204 corresponding to S2 is normal in the acceleration vibration endurance test process. When S2 is less than or equal to 3db and less than 6db, the risk of resonance of the parking motor 204 is indicated, and an alarm prompt is needed. When S2 is more than or equal to 6db, the resonance phenomenon of the parking motor 204 is shown, the parking motor 204 is determined to meet the resonance condition, and the acceleration vibration endurance test is stopped; further, whether the electric drive assembly is damaged or not is confirmed, a resonance source is determined, resonance caused by loosening of the installation of the electric drive assembly is checked, and the like.
When S3 < 6db, it indicates that the motor controller 203 corresponding to S3 does not have a resonance phenomenon, and it is determined that the motor controller 203 does not satisfy the resonance condition, and the motor controller 203 corresponding to S3 is normal during the accelerated vibration endurance test. When S3 is less than or equal to 3db and less than 6db, the motor controller 203 is at risk of resonance, and alarm prompt is needed. When S3 is more than or equal to 6db, representing that the motor controller 203 has resonance phenomenon, determining that the motor controller 203 meets resonance conditions, and stopping the accelerated vibration durability test; further, whether the electric drive assembly is damaged or not is confirmed, a resonance source is determined, resonance caused by loosening of the installation of the electric drive assembly is checked, and the like.
When S4 < 6db, it indicates that the driving motor 201 corresponding to S4 does not have a resonance phenomenon, and it is determined that the driving motor 201 does not satisfy the resonance condition, and the driving motor 201 corresponding to S4 is normal during the accelerated vibration durability test. When S4 is less than or equal to 3db and less than 6db, the driving motor 201 is at resonance risk, and alarm prompt is needed. When S4 is more than or equal to 6db, representing that the driving motor 201 has resonance phenomenon, determining that the driving motor 201 meets resonance conditions, and stopping the accelerated vibration durability test; further, whether the electric drive assembly is damaged or not is confirmed, a resonance source is determined, resonance caused by loosening of the installation of the electric drive assembly is checked, and the like.
In this embodiment, during the accelerated vibration endurance test, vibration conditions of each vibration sensor are monitored at all times by vibration data collected by each vibration sensor, so that vibration conditions of components of the electric drive assembly corresponding to each vibration sensor are represented, if a resonance phenomenon occurs in a certain component, the accelerated vibration endurance test is stopped, the corresponding component is inspected, and a resonance source is confirmed. Therefore, the vibration sensor at each part replaces the single vibration test of the parking ratchet 205, the single vibration test of the parking motor 204, the single vibration test of the motor controller 203 and the single vibration test of the driving motor 201, so that the testing efficiency is improved, the testing period and the research and development period are greatly shortened, and the testing cost and the research and development cost are saved.
The process for judging the displacement of the vibration sensor at the ratchet wheel is as follows:
obtaining the displacement of the vibration sensor at the ratchet wheel according to the vibration data of the vibration sensor at the ratchet wheel; and judging the displacement.
And if the displacement is smaller than the displacement threshold value, determining that the driving assembly has no error gear engaging fault. And if the displacement is not smaller than the displacement threshold value, determining that the driving assembly has a wrong gear-shifting fault. The displacement threshold is set according to actual requirements.
Specifically, the vibration data of the vibration sensor at the ratchet is passed through the formula (2) to obtain the displacement of the vibration sensor at the ratchet. In addition, the displacement of the vibration sensor at the ratchet wheel can also be measured by an integral algorithm.
Wherein a is Parking device Vibration data representing vibration sensor at ratchet wheel, unit m/s 2 The method comprises the steps of carrying out a first treatment on the surface of the d represents the displacement of the vibration sensor at the ratchet wheel, and the unit is mm; f is the real-time vibration frequency of the vibration sensor at the ratchet.
When the displacement is smaller than the displacement threshold, the parking ratchet 205 is indicated to be normal in operation, the electric drive assembly is normal, and no wrong shift is caused. When the displacement is not smaller than the displacement threshold, the parking ratchet 205 is abnormally operated, the electric drive assembly is abnormally operated, and the phenomenon of wrong gear engagement occurs.
In the embodiment, through calculating the displacement of the vibration sensor at the ratchet wheel, the error gear shifting operation test possibly occurring in the high speed of the parking system is replaced, the testing efficiency is improved, the testing period is shortened, and the development cost is saved.
After judging the vibration data of each vibration sensor and the displacement of the vibration sensor at the ratchet, step S103 is performed, and if the vibration data of each vibration sensor does not satisfy the resonance condition and the displacement is smaller than the displacement threshold, it is determined that the electric drive assembly satisfies the set performance.
And if the vibration data of at least one vibration sensor in the N vibration sensors meets the resonance condition or the displacement is not smaller than the displacement threshold value, determining that the electric drive assembly does not meet the set performance.
Specifically, in the accelerated vibration endurance test process, vibration data acquired by each vibration sensor is reasonable, and the displacement of the vibration sensor at the ratchet wheel is smaller than a displacement threshold value, so that the tested electric drive assembly performance is confirmed to be excellent. Otherwise, if vibration data acquired by any vibration sensor are unreasonable, resonance frequency exists, or displacement of the vibration sensor at the ratchet wheel is not smaller than a displacement threshold value, the tested electric drive assembly performance is confirmed to be problematic.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in this embodiment, vibration data of each vibration sensor and displacement of the vibration sensor at the ratchet are obtained by performing an accelerated vibration endurance test on the hybrid electric drive assembly. And judging the electric drive assembly according to the data, and judging whether the vibration data of each vibration sensor meet the resonance condition or not and whether the displacement of the vibration sensor at the ratchet wheel is smaller than a displacement threshold value or not. When the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than the displacement threshold, determining that the electric drive assembly meets the set performance. Through the accelerated vibration endurance test, vibration data of each vibration sensor can be measured to not meet resonance conditions, the fact that the corresponding part of each vibration sensor does not have resonance phenomenon and displacement is smaller than a displacement threshold value is indicated, the fact that the electric drive assembly does not have error gear engagement phenomenon is indicated, test efficiency is improved, accuracy of test results is improved, test period is shortened, and test cost is saved.
Example two
Based on the same inventive concept, a second embodiment of the present invention further provides a test device of a hybrid electric drive assembly, as shown in fig. 4, including:
an obtaining module 301, configured to obtain vibration data of each of N vibration sensors on a hybrid electric drive assembly and displacement of the vibration sensor at a ratchet wheel during an accelerated vibration endurance test of the hybrid electric drive assembly, where the N vibration sensors include the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller, and the vibration sensor at a driving motor, and N is an integer greater than 1;
a judging module 302, configured to judge the vibration data and the displacement of each vibration sensor;
a determining module 303, configured to determine that the electric drive assembly meets a set performance if the vibration data of each vibration sensor does not meet a resonance condition and the displacement is less than a displacement threshold.
As an alternative embodiment, the obtaining module 301 is configured to: the test for accelerated vibration durability of the hybrid electric drive assembly comprises:
in the process of exciting the electric drive assembly through the test bench, controlling the electric drive assembly to perform cyclic vibration for set times, wherein the electric drive assembly is erected on the test bench;
and in the process of each cycle of vibration, controlling the vibration frequency of the electric drive to increase from a first set frequency to a second set frequency, and then reducing from the second set frequency to the first set frequency, wherein the second set frequency is larger than the first set frequency.
As an alternative embodiment, the determining module 302 is configured to: the judging the vibration data of each vibration sensor comprises the following steps:
obtaining a vibration relative value of each vibration sensor according to the vibration data of each vibration sensor and the vibration data of the vibration sensor at the bracket; the vibration sensor at the bracket is arranged at the tooling bracket on the test bench; and judging the vibration relative value of each vibration sensor.
As an optional embodiment, the determining the vibration relative value of each vibration sensor includes:
if the vibration relative value of each vibration sensor is smaller than the resonance threshold value, determining that the vibration data of each vibration sensor does not meet the resonance condition;
and if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the resonance threshold value, determining that the corresponding component of the driving assembly of the vibration sensor has a fault, and stopping the accelerated vibration durability test.
As an optional embodiment, the determining the vibration relative value of each vibration sensor includes:
if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the alarm threshold value and the vibration relative value of the vibration sensor is smaller than the resonance threshold value, determining that the resonance risk exists in the part of the driving assembly corresponding to the vibration sensor, and sending alarm prompt information, wherein the alarm threshold value is smaller than the resonance threshold value.
As an alternative embodiment, the determining module 302 is configured to: the judging of the displacement comprises the following steps:
obtaining the displacement according to vibration data of the vibration sensor at the ratchet wheel; and judging the displacement.
As an alternative embodiment, said determining said displacement includes:
if the displacement is smaller than the displacement threshold, determining that the driving assembly has no error gear engaging fault;
if the displacement is not smaller than the displacement threshold value, determining that the driving assembly has a wrong gear-shifting fault
Since the testing device of the hybrid electric drive assembly described in this embodiment is a device for implementing the testing method of the hybrid electric drive assembly described in embodiment one of the present application, based on the testing method of the hybrid electric drive assembly described in embodiment one of the present application, those skilled in the art can understand the specific implementation of the testing device of the hybrid electric drive assembly of this embodiment and various modifications thereof, so how to implement the method of embodiment one of the present application with respect to the testing device of the hybrid electric drive assembly will not be described in detail herein. The apparatus used by those skilled in the art to implement the testing method of the hybrid electric drive assembly according to the first embodiment of the present application falls within the scope of protection intended by the present application.
Example III
Based on the same inventive concept, a third embodiment of the present invention further provides a computer device, as shown in fig. 5, including a memory 404, a processor 402, and a computer program stored on the memory 404 and executable on the processor 402, where the processor 402 executes the program to implement the steps of any one of the above methods for testing a hybrid electric drive assembly.
Where in FIG. 5 a bus architecture (represented by bus 400), bus 400 may comprise any number of interconnected buses and bridges, with bus 400 linking together various circuits, including one or more processors, represented by processor 402, and memory, represented by memory 404. Bus 400 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., as are well known in the art and, therefore, will not be described further herein. Bus interface 406 provides an interface between bus 400 and receiver 401 and transmitter 403. The receiver 401 and the transmitter 403 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 402 is responsible for managing the bus 400 and general processing, while the memory 404 may be used to store data used by the processor 402 in performing operations.
Example IV
Based on the same inventive concept, the fourth embodiment of the present invention further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the methods of the method of testing a hybrid electric drive assembly described in the previous embodiment.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A method of testing a hybrid electric drive assembly, comprising:
in the process of performing accelerated vibration endurance test on a hybrid electric drive assembly, vibration data of each vibration sensor in N vibration sensors on the electric drive assembly and displacement of the vibration sensor at a ratchet wheel are obtained, wherein the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller and the vibration sensor at a driving motor, and N is an integer larger than 1;
judging the vibration data and the displacement of each vibration sensor;
if the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than a displacement threshold, determining that the electric drive assembly meets the set performance;
wherein the determining the displacement includes: bringing vibration data of the vibration sensor at the ratchet wheel into a formula to obtain the displacement; judging the displacement; the formula isWherein a is Parking device Vibration data representing a vibration sensor at the ratchet; d represents the displacement of the vibration sensor at the ratchet; f is the real-time vibration frequency of the vibration sensor at the ratchet;
the judging of the displacement further comprises:
if the displacement is smaller than the displacement threshold, determining that the driving assembly has no error gear engaging fault;
and if the displacement is not smaller than the displacement threshold, determining that the driving assembly has a wrong gear engaging fault.
2. The method of claim 1, wherein the performing an accelerated vibration durability test on the hybrid electric drive assembly comprises:
in the process of exciting the electric drive assembly through the test bench, controlling the electric drive assembly to perform cyclic vibration for set times, wherein the electric drive assembly is erected on the test bench;
and in the process of each cycle of vibration, controlling the vibration frequency of the electric drive to increase from a first set frequency to a second set frequency, and then reducing from the second set frequency to the first set frequency, wherein the second set frequency is larger than the first set frequency.
3. The method of claim 2, wherein said determining vibration data for each vibration sensor comprises:
obtaining a vibration relative value of each vibration sensor according to the vibration data of each vibration sensor and the vibration data of the vibration sensor at the bracket; the vibration sensor at the bracket is arranged at the tooling bracket on the test bench;
and judging the vibration relative value of each vibration sensor.
4. A method according to claim 3, wherein said determining the vibration relative value of each vibration sensor comprises:
if the vibration relative value of each vibration sensor is smaller than the resonance threshold value, determining that the vibration data of each vibration sensor does not meet the resonance condition;
and if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the resonance threshold value, determining that the corresponding component of the driving assembly of the vibration sensor has a fault, and stopping the accelerated vibration durability test.
5. A method according to claim 3, wherein said determining the vibration relative value of each vibration sensor comprises:
if the vibration relative value of one vibration sensor in the N vibration sensors is not smaller than the alarm threshold value and the vibration relative value of the vibration sensor is smaller than the resonance threshold value, determining that the resonance risk exists in the part of the driving assembly corresponding to the vibration sensor, and sending alarm prompt information, wherein the alarm threshold value is smaller than the resonance threshold value.
6. A test device for a hybrid electric drive assembly, comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring vibration data of each vibration sensor in N vibration sensors on a hybrid electric drive assembly and displacement of the vibration sensor at a ratchet wheel in the process of performing accelerated vibration endurance test on the hybrid electric drive assembly, the N vibration sensors comprise the vibration sensor at the ratchet wheel and at least one of the vibration sensor at a motor, the vibration sensor at a motor controller and the vibration sensor at a driving motor, and N is an integer larger than 1;
the judging module is used for judging the vibration data and the displacement of each vibration sensor;
the determining module is used for determining that the electric drive assembly meets the set performance if the vibration data of each vibration sensor does not meet the resonance condition and the displacement is smaller than a displacement threshold;
wherein the determining the displacement includes: bringing vibration data of the vibration sensor at the ratchet wheel into a formula to obtain the displacement; judging the displacement; the formula isWherein a is Parking device Vibration data representing a vibration sensor at the ratchet; d represents the displacement of the vibration sensor at the ratchet; f is the real-time vibration frequency of the vibration sensor at the ratchet;
the judging of the displacement further comprises:
if the displacement is smaller than the displacement threshold, determining that the driving assembly has no error gear engaging fault;
and if the displacement is not smaller than the displacement threshold, determining that the driving assembly has a wrong gear engaging fault.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method steps of any of claims 1-5 when the program is executed.
8. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the method steps of any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110839958.XA CN113624434B (en) | 2021-07-23 | 2021-07-23 | Test method and device for hybrid electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110839958.XA CN113624434B (en) | 2021-07-23 | 2021-07-23 | Test method and device for hybrid electric drive assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113624434A CN113624434A (en) | 2021-11-09 |
| CN113624434B true CN113624434B (en) | 2023-12-19 |
Family
ID=78380814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110839958.XA Active CN113624434B (en) | 2021-07-23 | 2021-07-23 | Test method and device for hybrid electric drive assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113624434B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08166812A (en) * | 1994-12-12 | 1996-06-25 | Toyota Motor Corp | Positioning correcting device |
| CN203178052U (en) * | 2013-03-07 | 2013-09-04 | 苏州东菱振动试验仪器有限公司 | Blade vibration fatigue automatic test system |
| CN104198138A (en) * | 2014-08-28 | 2014-12-10 | 北京天源科创风电技术有限责任公司 | Early warning method and system for abnormal vibration of wind driven generator |
| CN104792485A (en) * | 2015-04-18 | 2015-07-22 | 中国船舶重工集团公司第七一二研究所 | Testing method of motor damping feature recognition |
| CN108519225A (en) * | 2018-03-19 | 2018-09-11 | 江苏大学 | A kind of detection device and method of blade of aviation engine high-temperature vibrating fatigue properties |
| CN108548646A (en) * | 2018-03-28 | 2018-09-18 | 中国航发北京航空材料研究院 | The quantitative measuring method of damage development overall process in a kind of vibration fatigue test |
| CN109668741A (en) * | 2018-12-04 | 2019-04-23 | 广州小鹏汽车科技有限公司 | Control device detection device, the system and method for pure electric automobile |
| CN109932152A (en) * | 2019-04-03 | 2019-06-25 | 一汽-大众汽车有限公司 | A kind of car horn resonance detection device and detection method |
| CN111198102A (en) * | 2020-01-17 | 2020-05-26 | 重庆长安新能源汽车科技有限公司 | Integrated electric drive system rack vibration working condition fitting method |
| CN111855122A (en) * | 2020-08-20 | 2020-10-30 | 陕西陕航环境试验有限公司 | Novel high cycle fatigue test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4560110B2 (en) * | 2008-09-17 | 2010-10-13 | ジヤトコ株式会社 | Abnormality diagnosis apparatus and abnormality diagnosis method |
-
2021
- 2021-07-23 CN CN202110839958.XA patent/CN113624434B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08166812A (en) * | 1994-12-12 | 1996-06-25 | Toyota Motor Corp | Positioning correcting device |
| CN203178052U (en) * | 2013-03-07 | 2013-09-04 | 苏州东菱振动试验仪器有限公司 | Blade vibration fatigue automatic test system |
| CN104198138A (en) * | 2014-08-28 | 2014-12-10 | 北京天源科创风电技术有限责任公司 | Early warning method and system for abnormal vibration of wind driven generator |
| CN104792485A (en) * | 2015-04-18 | 2015-07-22 | 中国船舶重工集团公司第七一二研究所 | Testing method of motor damping feature recognition |
| CN108519225A (en) * | 2018-03-19 | 2018-09-11 | 江苏大学 | A kind of detection device and method of blade of aviation engine high-temperature vibrating fatigue properties |
| CN108548646A (en) * | 2018-03-28 | 2018-09-18 | 中国航发北京航空材料研究院 | The quantitative measuring method of damage development overall process in a kind of vibration fatigue test |
| CN109668741A (en) * | 2018-12-04 | 2019-04-23 | 广州小鹏汽车科技有限公司 | Control device detection device, the system and method for pure electric automobile |
| CN109932152A (en) * | 2019-04-03 | 2019-06-25 | 一汽-大众汽车有限公司 | A kind of car horn resonance detection device and detection method |
| CN111198102A (en) * | 2020-01-17 | 2020-05-26 | 重庆长安新能源汽车科技有限公司 | Integrated electric drive system rack vibration working condition fitting method |
| CN111855122A (en) * | 2020-08-20 | 2020-10-30 | 陕西陕航环境试验有限公司 | Novel high cycle fatigue test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113624434A (en) | 2021-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4052469B2 (en) | Apparatus and method for early detection and prediction of damage to assemblies | |
| Amann et al. | Active damping of drive train oscillations for an electrically driven vehicle | |
| JP5338591B2 (en) | Remaining life diagnosis method and remaining life diagnosis system | |
| CN103163781A (en) | Optimizing system performance using state of health information | |
| US7092848B2 (en) | Control system health test system and method | |
| US9231515B2 (en) | Method of monitoring performance of an electric motor | |
| US20190033843A1 (en) | System and method for detecting abnormal operating condition of genset power system component | |
| JP2010065637A (en) | Method and device for diagnosing degradation of lubricating oil in industrial vehicle | |
| CN103380294A (en) | A method for diagnostic monitoring of a wind turbine generator system | |
| CN112776789A (en) | Brake vacuum power system leakage diagnosis method and system and storage medium | |
| CN113624434B (en) | Test method and device for hybrid electric drive assembly | |
| KR20220121932A (en) | System for monitoring battery of vehicle | |
| CN112345869A (en) | Automobile electronic equipment testing method and system, electronic equipment and storage medium | |
| KR20140048375A (en) | Fault diagnosis methods of the wheel type excavators | |
| CN115372016A (en) | Hybrid electric drive assembly testing method, device, system and medium | |
| KR20230165225A (en) | Methods and vehicle systems for determining the status of chassis components | |
| CN110873649B (en) | Diagnostic method, diagnostic system and motor vehicle | |
| CN114643977A (en) | Engine control method and device, vehicle control unit and vehicle | |
| CN114791563A (en) | Apparatus and method for diagnosing battery failure | |
| JP2017111018A (en) | Abnormality detector and abnormality detecting method | |
| US7881837B2 (en) | Diagnostic apparatus and method | |
| JP2010066188A (en) | Method and device for diagnosing failure of rotating body of industrial vehicle | |
| JPH09257562A (en) | Abnormality diagnostic method of motor-driven machine | |
| CN107643117A (en) | Load profile | |
| SE2251343A1 (en) | Method and control arrangement for diagnosing of a powertrain component of a vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |