CN117740368A - Transmission system rotation loss testing system, method and device - Google Patents
Transmission system rotation loss testing system, method and device Download PDFInfo
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Abstract
The invention relates to the field of transmission system testing, and particularly discloses a transmission system rotation loss testing system, a transmission system rotation loss testing method and a transmission system rotation loss testing device, wherein a fixing clamp is used for fixing a transmission system to be tested; the load applying component is used for applying load to the transmission system to be tested according to the test requirement; the power output component is used for being coupled with a power input gear of the transmission system to be tested, improving the rotating speed of the transmission system to be tested to a preset value, and then withdrawing; the rotating speed acquisition recorder is used for acquiring and recording the rotating speed and the corresponding acquisition time of the transmission system to be detected according to the preset frequency and transmitting the acquisition data to the upper computer; the upper computer is used for receiving the rotating speed of the transmission system to be tested and the corresponding acquisition time, and calculating the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed of the transmission system to be tested and the corresponding acquisition time. The invention does not need to continuously provide power from the outside, only needs to collect the rotating speed and time in the natural state of the transmission system, and has simple operation, wide application range and high accuracy of test data.
Description
Technical Field
The invention relates to the field of transmission system testing, in particular to a transmission system rotation loss testing system, a transmission system rotation loss testing method and a transmission system rotation loss testing device.
Background
With the development of the trend of electric motor vehicles, new energy vehicles driven by a motor are increasingly favored in the market. The electric drive of the automobile generates a new drive form and a transmission structure, such as an electric drive bridge, the energy consumption of the transmission system plays a decisive role in the energy consumption of the whole automobile, and the test of the loss of the transmission system caused by the rotation resistance under different working conditions can quickly and accurately provide a basis for the evaluation of the economy of the transmission system and the whole automobile.
At present, the internal resistance or rotation loss test of a transmission system is completed under the condition of providing continuous driving force outside, and patent CN115655686A discloses an internal rotation resistance measuring device for a part to be tested of a vehicle, which mainly tests the rotation torque resistance of the part to be tested through a rotation driving mechanism with a torque testing element. If the rotation speed and torque of the external rotation driving mechanism are used for calculating the rotation loss of the transmission system to be tested, the mechanical transmission efficiency of the coupling of the external driving element and the part to be tested causes deviation of the result, and if a mode of arranging a torque sensor in the transmission system to be tested is adopted, the problem of complex operation exists. In addition, the external power is continuously provided, and fluctuation of the rotating speed and the torque of the power source can also lead to inaccurate test results.
Disclosure of Invention
In order to solve the problems, the invention provides a transmission system rotation loss testing system, a transmission system rotation loss testing method and a transmission system rotation loss testing device, which do not need to continuously provide power from outside, only need to collect rotation speed and time in a natural state of the transmission system, and are simple to operate, wide in application range and high in accuracy of test data.
In a first aspect, the present invention provides a transmission system rotation loss testing system, comprising,
and (3) fixing the clamp: the device is used for fixing a transmission system to be tested;
load applying member: the device is used for applying load to the transmission system to be tested according to the test requirement;
a power output part: the method comprises the steps of (1) increasing the rotating speed of a transmission system to be tested to a preset value, and then withdrawing;
the rotating speed acquisition recorder comprises: the system comprises a host computer, a transmission system and a control system, wherein the transmission system is used for acquiring and recording the rotating speed of the transmission system to be tested and the corresponding acquisition time according to a preset frequency, and transmitting acquired data to the host computer;
the upper computer: the power generation device is used for receiving the rotating speed and the corresponding acquisition time of the transmission system to be tested, and calculating the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed and the corresponding acquisition time of the transmission system to be tested.
In an alternative embodiment, the upper computer is further configured to draw a graph of rotational loss power versus rotational speed of the transmission system under a corresponding load according to the rotational losses at the plurality of rotational speeds under test, and fit a functional relationship between the rotational loss power and the rotational speed.
In a second aspect, the present invention provides a method for testing rotation loss of a transmission system, including the following steps:
fixing the transmission system to be tested by using a fixing clamp;
applying a load to the transmission system to be tested by using a load applying component according to the test requirement;
controlling the power output part to increase the rotating speed of the transmission system to be tested to a preset value, and then withdrawing the power output part;
acquiring and recording the rotating speed of the transmission system to be measured and the corresponding acquisition time according to a preset frequency by using a rotating speed acquisition recorder, and transmitting acquired data to an upper computer;
the upper computer receives the rotating speed of the transmission system to be tested and the corresponding acquisition time, and calculates the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed of the transmission system to be tested and the corresponding acquisition time.
In an alternative embodiment, the calculation of the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system to be tested and the corresponding acquisition time specifically includes:
converting the rotation speed to be measured into a test angular speedω；
Calculating the angular velocity of the transmission system to be measuredω2=ω+ΔωReduced toω1=ω-ΔωTime requiredTWhereinΔωThe angular velocity difference required for the test;
performing multiple tests to obtain time under each testTThe time of multiple trials was calculated by the following formulaTArithmetic mean of (2)：
Wherein,nfor the number of trials to be carried out,T i is the firstiTime of the secondary testT；
The resultant moment generated by the rotation resistance is calculated by the following formulaM：
Wherein,Jthe rotational inertia of the transmission system to be measured;
calculating the rotation loss power at the rotation speed to be measured by the following formulaP：
。
In an alternative embodiment, the angular velocity difference required for the testΔωNot exceeding the test angular velocityω5% of (C).
In an alternative embodiment, the method calculates the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system to be tested and the corresponding acquisition time, and further includes:
the time of multiple trials was calculated by the following formulaTStatistical accuracy of (2)p
Wherein,tin order to calculate the coefficients of statistical accuracy,nthe larger the value of (2)tThe smaller the value of (2);
judgment of statistical accuracypWhether greater than a threshold;
if yes, reject and arithmetic meanTime when deviation is greater than thresholdTAnd/or the number of trials is increased to recalculate the arithmetic mean +.>。
In an alternative embodiment, the time of the final participation calculationTNot less than 3.
In an alternative embodiment, the method further comprises the steps of:
and the upper computer draws a rotating loss power-rotating speed graph of the transmission system to be tested under corresponding load according to the rotating loss under a plurality of rotating speeds to be tested, and fits a functional relation between the rotating loss power and the rotating speed.
In a third aspect, the present invention provides a transmission system rotation loss testing apparatus configured in an upper computer, including,
and a data receiving module: receiving the rotating speed of a transmission system to be tested and the corresponding acquisition time;
the rotation loss power calculation module is used for: and calculating the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system to be tested and the corresponding acquisition time.
In an alternative embodiment, the method further comprises,
and a relation drawing module: and drawing a rotating loss power-rotating speed graph of the transmission system to be tested under corresponding load according to the rotating losses under a plurality of rotating speeds to be tested, and fitting a functional relation between the rotating loss power and the rotating speed.
Compared with the prior art, the transmission system rotation loss testing system, method and device provided by the invention have the following beneficial effects: during testing, the power output part is used for increasing the rotating speed of the transmission system to be tested to a certain value and then withdrawing, the transmission system to be tested is in a natural running state, the rotating speed of the transmission system to be tested and the corresponding time are collected in the state, and the rotating loss power under the test rotating speed is obtained after processing and calculation. The invention does not need to continuously provide power from the outside, only needs to collect the rotating speed and time in the natural state of the transmission system, and has simple operation, wide application range and high accuracy of test data.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a transmission system rotation loss testing system according to an embodiment of the present invention.
Fig. 2 is a flow chart of a method for testing rotation loss of a transmission system according to an embodiment of the present invention.
FIG. 3 is a graph of driveline power loss versus vehicle speed plotted in accordance with example 1 and a fitted power loss versus vehicle speed.
Fig. 4 is a schematic block diagram of a transmission system rotation loss testing device according to an embodiment of the present invention.
In the figure, the device comprises a 1-power output part, a 2-transmission system to be tested, a 3-rotating speed acquisition recorder, a 4-load applying part and a 5-upper computer.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic structural diagram of a transmission system rotation loss testing system provided by the embodiment of the invention, and the system mainly comprises a fixed clamp, a load applying component 4, a power output component 1, a rotation speed acquisition recorder 3 and an upper computer 5.
And (3) fixing the clamp: for fixing the transmission system 2 to be measured.
Load applying member 4: for applying a load to the transmission 2 to be tested according to the test requirements.
Power output member 1: for increasing the rotational speed of the transmission 2 to be measured to a preset value and then withdrawing.
The rotation speed acquisition recorder 3: the system is used for acquiring and recording the rotating speed and the corresponding acquisition time of the transmission system 2 to be measured according to the preset frequency, and transmitting the acquired data to the upper computer 5.
Upper computer 5: the power generation device is used for receiving the rotating speed and the corresponding acquisition time of the transmission system 2 to be tested, and calculating the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed and the corresponding acquisition time of the transmission system 2 to be tested.
After the transmission system 2 to be tested is fixed, a test load is applied, the transmission system 2 to be tested is increased to a certain rotating speed through the power output part 1, then the power output part 1 is withdrawn, the rotating speed and the corresponding time of the transmission system 2 to be tested are recorded, and the rotating loss power of the transmission system 2 to be tested under different rotating speeds is obtained through processing. It should be noted that, the power output member 1 may be a separate external member, and in this case, the power output member 1 is first coupled with the power input gear of the transmission system 2 to be tested during the test to provide power for the transmission system 2 to be tested. The power output part 1 can also be a power output part of the transmission system 2 to be tested, and the power output part 1 can be directly controlled to accelerate the transmission system 2 to be tested.
Wherein the transmission system 2 comprises components or assemblies comprising rotating structures such as meshing gears, bearings, etc. for mechanical transmission. The fixing means produced by the fixing clamp cannot change the rotational resistance of the transmission system 2 to be measured. The load applying component 4 can apply a specific load to the transmission system 2 to be tested according to the test requirement, and the direction and the mode of applying the load are equivalent to the actual use environment of the transmission system 2 to be tested. The power output part 1 can increase the rotating speed of the transmission system 2 to be tested, and withdraw after reaching a certain rotating speed, and the highest rotating speed of the transmission system 2 to be tested after withdrawing meets the test requirement. The rotation speed acquisition recorder 3 should be capable of storing the change of the rotation speed of the transmission system 2 to be tested along with time in real time, and the test frequency is not less than 10 Hz.
The upper computer 5 calculates and processes the rotation speed of the transmission system 2 to be tested and the corresponding acquisition time to obtain the rotation loss power of the test rotation speed under the corresponding load, and simultaneously, a rotation loss power-rotation speed curve graph of the transmission system 2 to be tested under the corresponding load can be drawn according to the rotation losses under a plurality of rotation speeds to be tested, and a function relation between the rotation loss power and the rotation speed is fitted. The calculation of the rotational loss power is described in detail in the following examples of the method for testing rotational loss of the transmission system, and will not be described in detail herein.
Fig. 2 is a schematic flow chart of a method for testing rotation loss of a transmission system according to an embodiment of the present invention, as shown in fig. 2, the method includes the following steps, and it should be understood that, according to different requirements, the sequence of the steps in the flow chart may be changed, and some may be omitted.
S1, fixing the transmission system 2 to be tested by using a fixing clamp.
And S2, applying load to the transmission system 2 to be tested by using the load applying component 4 according to the test requirement.
It will be appreciated that if the rotational power is lost under no load currently being tested, no load need be applied to the driveline 2 under test.
And S3, controlling the power output part 1 to increase the rotating speed of the transmission system 2 to be tested to a preset value, and then withdrawing the power output part 1.
It should be noted that, the power output member 1 may be a separate external member, and in this case, the power output member 1 needs to be coupled with the power input gear of the transmission system 2 to be tested before step S3 to provide power to the transmission system 2 to be tested. The power output part 1 can also be a power output part of the transmission system 2 to be tested, and the power output part 1 is directly controlled to accelerate the transmission system 2 to be tested.
S4, acquiring and recording the rotating speed of the transmission system 2 to be tested and the corresponding acquisition time according to the preset frequency by using the rotating speed acquisition recorder 3, and transmitting the acquisition data to the upper computer 5.
S5, the upper computer 5 receives the rotating speed of the transmission system 2 to be tested and the corresponding acquisition time, and calculates the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed of the transmission system 2 to be tested and the corresponding acquisition time.
S5.1, converting the rotation speed to be tested into the test angular speedω。
S5.2, calculating the angular speed of the transmission system 2 to be testedω2=ω+ΔωReduced toω1=ω-ΔωTime requiredTWhereinΔωThe angular velocity difference required for the test.
Wherein the angular velocity difference required for the testΔωNot exceeding the test angular velocityωIs in rad/s.
S5.3, performing multiple tests to obtain the time under each testTThe time of multiple trials was calculated by the following formulaTArithmetic mean of (2)：
Wherein:
n-number of trials;
T i -firstiTime of the secondary testT，s；
-time ofTIs used as a reference to the arithmetic mean of (a),s。
it should be noted that the present embodiment also calculates the time of multiple testsTStatistical accuracy of (2)pTo provide test accuracy, in particular, the time of multiple trials is calculated by the following formulaTStatistical accuracy of (2)p：
Wherein:t-calculating coefficients of statistical accuracy.
nThe larger the value of (2)tTable 1 shows coefficients for calculating statistical accuracy according to one embodiment.
Table 1: coefficients for calculating statistical accuracy
Then, the statistical accuracy is judgedpWhether greater than a threshold, if so, rejecting and arithmetic meanTime when deviation is greater than thresholdTAnd/or the number of trials is increased to recalculate the arithmetic mean +.>. Finally, the time of final participation in the calculationTNot less than 3.
For example, ifpIf the number of the data is larger than 0.05, eliminating the data with larger deviation or increasing the test times, re-calculating, wherein the number of the data participating in calculation is not less than 3。
S5.4, calculating the resultant moment generated by the rotation resistance through the following formulaM：
Wherein:
M-the angular velocity of the transmission system 2 to be measured isωWhen the test point generates a resultant moment, N.m, due to the rotation resistance;
Jmoment of inertia of the transmission system 2 to be measured, kg.m 2 。
S5.5, calculating the rotation loss power under the rotation speed to be measured through the following formulaP：
It should be noted that the number of the substrates,Pfor the angular velocity of the transmission system 2 to be measured to beωWhen the power is in a certain time, the unit of the power is W, and the power is lost due to rotation resistance;ωfor the corresponding test angular velocity in step S6.1, the unit is rad/S.
In a specific embodiment, multiple tests are performed, and the upper computer 5 draws a graph of rotation loss power-rotation speed of the transmission system 2 to be tested under corresponding load according to rotation loss at multiple rotation speeds to be tested, and fits a functional relation between the rotation loss power and the rotation speed.
Two specific examples are provided below to further illustrate the invention.
Specific example 1:
the moment of inertia of a certain electric drive axle transmission system (comprising a tyre) folded to the tyre rotation shaft is 64.07 kg m 2 The rotation loss corresponding to 80 km/h in the natural state is tested. Firstly, fixing an electric drive bridge transmission system to be tested; meanwhile, the gear of the power output device is replaced, so that the coupling between the gear and the power input gear of the electric drive bridge transmission system is ensured; the transmission system 2 to be measured is increased to the corresponding rotation speed of 90 km/h of the vehicle speed by a power output device, namely 453 rpm of the tyre of the system to be measured and 47.45 rad/s of the tyre of the system to be measured, and then the transmission system to be measured is movedWithdrawing the force output device; the tire rotation speed and the corresponding time of the transmission system 2 to be tested are recorded, and the test is repeated 5 times.
Tire angular velocity corresponding to vehicle speed 80 km/hω= 42.18 rad/s, takeΔω= 2.109 rad/s, actually measured fromω2=ω+ΔωReduced toω1=ω-ΔωTime requiredT3.21 s, 3.30 s, 3.29 s, 3.11 s, 3.23 s, respectively, calculated, arithmetic mean3.228 s, statistical accuracyp0.029, less than 0.05, so the test results are valid. Further calculation shows that the resultant torque of the tire rotating shaft is 83.72N m, and the rotation loss power of the transmission system at 80 km/h is 3531W.
Specific example 2:
the moment of inertia of a central drive transmission system folded to the output shaft is 13.36 kg m 2 The corresponding rotation loss of 60 km/h under a single bridge load of 10 t is tested. Firstly, fixing a central driving transmission system to be tested; then applying an equivalent 10 t load at the middle position of the axle housing; the gear of the power output device is replaced, so that the power output device is guaranteed to be coupled with the power input gear of the transmission system 2 to be tested. And (3) the transmission system 2 to be tested is increased to the rotating speed corresponding to the vehicle speed of 70 km/h through the power output device, namely the rotating speed 1820 rpm of the output shaft of the transmission system to be tested and the angular speed of 190.59 rad/s, then the power output device is withdrawn, the rotating speed and the corresponding time of the transmission system 2 to be tested are recorded, and the test is repeated for 8 times.
Output shaft angular velocity corresponding to vehicle speed 60 km/hω= 163.36 rad/s, takeΔω=4.900 rad/s, actually measured fromω2=ω+ΔωReduced toω1=ω-ΔωThe required time T is respectively 1.42 s, 1.32 s, 1.40 s, 1.35 s, 1.32 s, 1.28 s, 1.35 s and 1.37 s, calculated and calculated to be the arithmetic average value1.351 s, statistical accuracyp0.033, less than 0.05, so the test results are valid. Further calculation gave a resultant torque at the output shaft of 96.89N m, rotation of the transmission at 60 km/h under 10 t loadThe loss power is 1585W.
The corresponding rotational resistance resultant moment of the electric drive axle transmission system (including tires) at different vehicle speeds was tested and obtained by data processing in accordance with the method of example 1, as shown in table 2. FIG. 3 is a graph of the transmission loss power versus vehicle speed plotted as a function of the fitted loss power and vehicle speed.
Table 2: rotational resistance combined moment and loss power corresponding to certain electric drive axle transmission system (including tyre) under different vehicle speeds
The embodiment of the invention provides a transmission system rotation loss testing device corresponding to the method.
Fig. 4 is a schematic block diagram of a transmission system rotation loss testing device according to an embodiment of the present invention, where the transmission system rotation loss testing device 400 is configured on the upper computer 5, and may be divided into a plurality of functional modules according to the functions performed by the transmission system rotation loss testing device, as shown in fig. 4. The functional module may include: a data receiving module 410, a rotation loss power calculating module 420 and a relation drawing module 430. The module referred to in the present invention refers to a series of computer program segments capable of being executed by at least one processor and of performing a fixed function, stored in a memory.
The data receiving module 410: and receiving the rotating speed and the corresponding acquisition time of the transmission system 2 to be tested.
Rotational loss power calculation module 420: and calculating the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system 2 to be tested and the corresponding acquisition time.
Relationship drawing module 430: and drawing a rotating loss power-rotating speed graph of the transmission system 2 to be tested under corresponding load according to the rotating losses under a plurality of rotating speeds to be tested, and fitting a functional relation between the rotating loss power and the rotating speed.
The transmission rotation loss testing device of this embodiment is used to implement the aforementioned transmission rotation loss testing method, and thus, the embodiment of the device can be seen as the example part of the transmission rotation loss testing method, so, the embodiment of the device can be referred to the description of the corresponding examples of the respective parts, and will not be further described herein.
In addition, since the transmission system rotation loss testing device of the present embodiment is used to implement the aforementioned transmission system rotation loss testing method, the function thereof corresponds to the function of the aforementioned method, and will not be described herein.
The foregoing disclosure is merely illustrative of the preferred embodiments of the invention and the invention is not limited thereto, since modifications and variations may be made by those skilled in the art without departing from the principles of the invention.
Claims (10)
1. A transmission system rotation loss test system is characterized by comprising,
and (3) fixing the clamp: the device is used for fixing a transmission system to be tested;
load applying member: the device is used for applying load to the transmission system to be tested according to the test requirement;
a power output part: the method comprises the steps of (1) increasing the rotating speed of a transmission system to be tested to a preset value, and then withdrawing;
the rotating speed acquisition recorder comprises: the system comprises a host computer, a transmission system and a control system, wherein the transmission system is used for acquiring and recording the rotating speed of the transmission system to be tested and the corresponding acquisition time according to a preset frequency, and transmitting acquired data to the host computer;
the upper computer: the power generation device is used for receiving the rotating speed and the corresponding acquisition time of the transmission system to be tested, and calculating the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed and the corresponding acquisition time of the transmission system to be tested.
2. The transmission system rotation loss testing system according to claim 1, wherein the upper computer is further configured to draw a rotation loss power-rotation speed graph of the transmission system to be tested under a corresponding load according to rotation losses at a plurality of rotation speeds to be tested, and fit a functional relation between the rotation loss power and the rotation speed.
3. A method for testing rotation loss of a transmission system, comprising the steps of:
fixing the transmission system to be tested by using a fixing clamp;
applying a load to the transmission system to be tested by using a load applying component according to the test requirement;
controlling the power output part to increase the rotating speed of the transmission system to be tested to a preset value, and then withdrawing the power output part;
acquiring and recording the rotating speed of the transmission system to be measured and the corresponding acquisition time according to a preset frequency by using a rotating speed acquisition recorder, and transmitting acquired data to an upper computer;
the upper computer receives the rotating speed of the transmission system to be tested and the corresponding acquisition time, and calculates the rotating loss power of the test rotating speed under the corresponding load according to the rotating speed of the transmission system to be tested and the corresponding acquisition time.
4. A method for testing rotation loss of a transmission system according to claim 3, wherein calculating the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system to be tested and the corresponding acquisition time specifically comprises:
converting the rotation speed to be measured into a test angular speedω；
Calculating the angular velocity of the transmission system to be measuredω2=ω+ΔωReduced toω1=ω-ΔωTime requiredTWhereinΔωThe angular velocity difference required for the test;
performing multiple tests to obtain time under each testTThe time of multiple trials was calculated by the following formulaTArithmetic mean of (2)：
Wherein,nfor the number of trials to be carried out,T i is the firstiTime of the secondary testT；
The resultant moment generated by the rotation resistance is calculated by the following formulaM：
Wherein,Jthe rotational inertia of the transmission system to be measured;
calculating the rotation loss power at the rotation speed to be measured by the following formulaP：
。
5. The method of claim 4, wherein the angular velocity difference required for the test is measuredΔωNot exceeding the test angular velocityω5% of (C).
6. The method for testing rotational loss of a transmission according to claim 4 or 5, wherein the step of calculating rotational loss power of the test rotational speed under the corresponding load according to the rotational speed of the transmission to be tested and the corresponding acquisition time further comprises:
the time of multiple trials was calculated by the following formulaTStatistical accuracy of (2)p
Wherein,tin order to calculate the coefficients of statistical accuracy,nthe larger the value of (2)tThe smaller the value of (2);
judgment of statistical accuracypWhether greater than a threshold;
if yes, reject and arithmetic meanTime when deviation is greater than thresholdTAnd/or the number of trials is increased to recalculate the arithmetic mean +.>。
7. The method of claim 6, wherein the time to final participation in the calculationTNot less than 3.
8. A method of testing transmission rotational losses according to any one of claims 3 to 5, further comprising the steps of:
and the upper computer draws a rotating loss power-rotating speed graph of the transmission system to be tested under corresponding load according to the rotating loss under a plurality of rotating speeds to be tested, and fits a functional relation between the rotating loss power and the rotating speed.
9. A transmission system rotation loss testing device is characterized in that the device is configured on an upper computer and comprises,
and a data receiving module: receiving the rotating speed of a transmission system to be tested and the corresponding acquisition time;
the rotation loss power calculation module is used for: and calculating the rotation loss power of the test rotation speed under the corresponding load according to the rotation speed of the transmission system to be tested and the corresponding acquisition time.
10. The transmission rotation loss testing apparatus according to claim 9, further comprising,
and a relation drawing module: and drawing a rotating loss power-rotating speed graph of the transmission system to be tested under corresponding load according to the rotating losses under a plurality of rotating speeds to be tested, and fitting a functional relation between the rotating loss power and the rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311809360.1A CN117740368A (en) | 2023-12-26 | 2023-12-26 | Transmission system rotation loss testing system, method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311809360.1A CN117740368A (en) | 2023-12-26 | 2023-12-26 | Transmission system rotation loss testing system, method and device |
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| CN117740368A true CN117740368A (en) | 2024-03-22 |
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| CN202311809360.1A Pending CN117740368A (en) | 2023-12-26 | 2023-12-26 | Transmission system rotation loss testing system, method and device |
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