CN114813110A - Gear squeal detection method and device, computer equipment and storage medium - Google Patents
Gear squeal detection method and device, computer equipment and storage medium Download PDFInfo
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Abstract
In an embodiment of the application, a gear squeal detection method, a device, a computer device and a storage medium are provided, and the method includes: acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information; determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; when the noise of the engine is in the gear side frequency interval corresponding to the gear, the corresponding gear is confirmed to be the gear with the squeal. By the method, the technical problems that the subjective evaluation difference of the scheme in the prior art and the field environment of a person are poor, misjudgment and missed judgment of the engine gear squeaking are easily caused, the gear which causes abnormal sound cannot be positioned, all gear trains need to be inspected and measured, and the workload is large are solved, the technical effects that the evaluation standard is unified, the specific gear and the reason which cause the squeaking are preliminarily identified, and more targeted evaluation is achieved.
Description
Technical Field
The present invention relates to the field of automobiles, and in particular, to a gear squeal detection method, a computer device, and a storage medium.
Background
Along with the optimization of the electric control strategy, the noise of the engine body is gradually reduced, so that the noise of accessories such as gears, air compressors, oil pumps and the like is highlighted. At present, noise for engines such as gear squeal is found by subjective perception. In the evaluation process of the engine gear squeal, due to the problem of subjective evaluation difference of people or the problem of poor field environment, erroneous judgment and missing judgment of the engine gear squeal are easily caused.
The existing technical scheme for evaluating the engine squeal judges whether noise exists or not by detecting the order line of gear-free meshing. With this arrangement, the gear meshing noise affects the determination result of the order line without gear meshing regardless of the presence or absence of noise. And the gear which causes abnormal noise cannot be positioned, the disassembly and inspection measurement needs to be carried out on all gear trains, and the workload is large.
Therefore, there is a need to provide a method for detecting gear squeal to solve at least the technical problems in the related art.
Disclosure of Invention
The application provides a gear squeal detection method, a gear squeal detection device, computer equipment and a storage medium, which are used for at least solving the technical problems in the related art.
According to an aspect of an embodiment of the present application, there is provided a gear howling detection method, including: acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information; determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; and when the engine noise is in the gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the howling.
Optionally, the determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number of teeth information of the plurality of gears comprises: determining a gear meshing frequency and a gear shaft frequency corresponding to each gear based on the engine speed information and the gear tooth number information; and determining a side frequency interval corresponding to each gear based on the gear meshing frequency and the gear shaft frequency.
Optionally, after confirming that the squeal of the corresponding gear occurs, the method comprises: calculating a first-order side frequency of the gear based on the meshing frequency of the gear with the howling and the gear shaft frequency; when the engine noise comprises a first order sideband frequency of the gear, confirming that the failure reason of the gear is caused by the modulation of the first order sideband frequency.
Optionally, after confirming that the squeal occurs to the corresponding gear, the method further includes: calculating a second-order side frequency of the gear based on the meshing frequency of the gear with the howling and the gear shaft frequency; and when the engine noise comprises the second-order side frequency of the gear, confirming that the failure reason of the gear is the second-order side frequency modulation reason.
Optionally, when the engine noise is not in the gear side frequency interval corresponding to the gear, it is determined that the gear is not howling.
Optionally, before determining the gear side frequency interval corresponding to each gear based on the engine speed information and the information on the number of teeth of the plurality of gears, the method further comprises: determining a gear half-frequency interval corresponding to each gear based on the engine speed information and the number information of the teeth of the plurality of gears; and when the engine noise comprises the gear half-step side frequency interval, confirming that the engine has the over-squeal phenomenon.
Optionally, the method further comprises: acquiring multiple groups of engine rotating speed information and engine noise information; the gear in which the howling occurs is determined based on the plurality of sets of engine speed information and engine noise information.
According to another aspect of the present application, there is provided a gear squeal detection apparatus including: the acquiring module is used for acquiring engine rotating speed information and a plurality of gear tooth number information; the interval determining module is used for determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; and the squeal determining module is used for determining the gear with squeal based on the gear side frequency interval corresponding to each gear.
According to another aspect of the application, there is provided a computer device comprising a processor, a memory and a program stored on the memory and executable on the processor, the processor implementing at least the following steps when executing the program: acquiring engine speed information and a plurality of gear tooth number information; determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; and determining the gear with the squeal based on the gear side frequency interval corresponding to each gear.
According to another aspect of the present application, there is provided a computer-readable storage medium storing a computer program which, when executed by a processor, implements the gear howling detection method of any one of the above.
In an embodiment of the present application, a gear squeal detection method is provided, including: acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information; determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; and when the engine noise is in the gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the squeal. By the method, after the gear side frequency interval corresponding to each gear is determined, the engine noise in the gear side frequency interval corresponding to the gear is determined as the squeaking phenomenon of the corresponding gear, so that the technical problems that the subjective evaluation difference of the scheme in the prior art or the field environment is poor, the misjudgment and the misjudgment of the engine gear squeaking are easily caused, the abnormal-sound-causing gear cannot be positioned, the detection and removal of all gear trains are needed, the workload is large are solved, the unification of the evaluation standard is realized, the specific gear and reason causing the squeaking are preliminarily identified, and the technical effect of more targeted evaluation is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a schematic diagram of a hardware environment for a gear squeal detection method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of a gear squeal detection method according to an embodiment of the present application;
FIG. 3 is a schematic flow chart diagram of another gear squeal detection method according to an embodiment of the present application;
FIG. 4 is a schematic view of a gear train according to an embodiment of the present application;
FIG. 5 is a graph of an engine noise spectrum according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a gear squeal detection apparatus according to an embodiment of the present application;
fig. 7 is a block diagram of a computer device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an aspect of an embodiment of the present application, a gear squeal detection method is provided. Alternatively, in the present embodiment, the above-mentioned gear howling detection method may be applied to a hardware environment formed by the terminal 102 and the server 104 as shown in fig. 1. As shown in fig. 1, the server 104 is connected to the terminal 102 through a network, which may be used to provide services for the terminal or a client installed on the terminal, may be provided with a database on the server or independent from the server, may be used to provide data storage services for the server 104, and may also be used to handle cloud services, and the network includes but is not limited to: the terminal 102 is not limited to a PC, a mobile phone, a tablet computer, etc. the terminal may be a wide area network, a metropolitan area network, or a local area network. The gear howling detection method according to the embodiment of the present application may be executed by the server 104, or may be executed by the terminal 102, or may be executed by both the server 104 and the terminal 102. The terminal 102 may perform the gear howling detection method according to the embodiment of the present application, or may perform the gear howling detection method by a client installed thereon.
Taking the terminal 102 and/or the server 104 to execute the gear howling detection method in the present embodiment as an example, fig. 2 is a schematic flowchart of an alternative gear howling detection method according to an embodiment of the present application, and as shown in fig. 2, the flowchart of the method may include the following steps:
s202, obtaining engine rotating speed information, a plurality of gear tooth number information and engine noise information;
s204, determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears;
s206, when the engine noise is in a gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the squeal;
as for the technical solution in step S202, as an optional implementation manner, for the engine speed information, the current speed information of the engine may be directly obtained, or historical speed information of the engine may be collected and stored in a memory, and is directly read from the memory when the engine speed information is obtained; for the gear tooth number information, the gear tooth number can be directly calibrated before the engine leaves a factory and then stored in a memory, and the gear tooth number information can be directly read from the memory when being acquired; for the engine noise information, the current noise information of the engine can be collected for analysis or historical noise information can be collected during the operation of the engine and stored in a memory, and the historical noise information can be directly read from the memory when the engine noise information is obtained. It CAN be understood that the engine speed may be obtained through an engine speed sensor, the engine speed may be obtained through a CAN signal, and the engine speed may also be obtained through other optional embodiments, which are not limited herein.
As an optional implementation manner for the technical solution in step S204, after obtaining the engine rotation speed information and the information of the number of gear teeth, calculating a gear side frequency interval corresponding to each gear based on the rotation speed information and the information of the number of gear teeth;
for the above technical solution, it can be understood that after the engine rotation speed is obtained, the rotation speed of the driving gear may be determined by the engine rotation speed, after the rotation speed of the driving gear is determined, the meshing frequency of the gear train is determined based on the rotation speed and the number of teeth of the driving gear, and the side frequency interval corresponding to each gear is calculated according to the meshing frequency of the gear train.
As an optional implementation manner, after the engine noise information is obtained, the engine noise information may be processed into a corresponding colormap, and an override value corresponding to the engine noise is obtained; and obtaining the override value corresponding to the gear side frequency interval corresponding to each gear, and when the override value corresponding to the engine noise appears in the override value corresponding to the gear side frequency interval corresponding to each gear, confirming that the gear with the override value corresponding to the gear side frequency interval has squeal.
Acquiring engine speed information, a plurality of gear tooth number information and engine noise information through the steps S202 to S206; determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears; when the engine noise is in the gear side frequency interval corresponding to the gear, the corresponding gear is determined to be the gear with the squealing phenomenon, and after the gear side frequency interval corresponding to each gear is determined, the engine noise in the side frequency interval corresponding to the gear is determined to be the gear with the squealing phenomenon, so that the technical problems that the subjective evaluation difference of the scheme in the prior art is different or the field environment is poor, the technical problems of misjudgment and missing judgment of the engine gear squealing phenomenon are easily caused, the gear with the abnormal sound is not positioned, all gear trains need to be inspected and measured, the workload is large are solved, the technical effects that the evaluation standard is unified, the specific gear and the reason causing the squealing are preliminarily identified, and the targeted evaluation is achieved.
As an exemplary embodiment, the determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number of teeth information of the plurality of gears includes: determining a gear meshing frequency and a gear shaft frequency corresponding to each gear based on the engine speed information and the gear tooth number information; and determining a side frequency interval corresponding to each gear based on the gear meshing frequency and the gear shaft frequency.
For the above technical solution, as an optional implementation manner, after the engine rotation speed is obtained, the rotation speed of the driving gear may be determined by the engine rotation speed, after the rotation speed of the driving gear is determined, the meshing frequency of the gear train is determined based on the rotation speed and the number of teeth of the driving gear, and the side frequency interval corresponding to each gear is calculated according to the meshing frequency of the gear train. And determining the meshing frequency of the gear train, and determining the meshing frequency and the shaft frequency of each gear according to the meshing frequency of the gear train, wherein the gear side frequency interval corresponding to each gear is the sum or difference of the meshing frequency and the frequency doubling noise.
According to the technical scheme, gear meshing frequency and gear shaft frequency corresponding to each gear are determined based on the engine rotating speed information and the gear tooth number information; determining a side frequency interval corresponding to each gear based on the gear meshing frequency and the gear shaft frequency; the technical effect of calculating the side frequency interval corresponding to each gear based on the gear meshing frequency and the shaft frequency is achieved.
As an exemplary embodiment, after confirming that the howling occurs to the corresponding gear includes: calculating a first-order side frequency of the gear based on the meshing frequency of the gear with the howling and the gear shaft frequency; when the engine noise comprises a first order sideband frequency of the gear, confirming that the failure reason of the gear is caused by the modulation of the first order sideband frequency.
For the technical scheme, the reason for generating the side frequency phenomenon of the corresponding order is fixed in the running process of the engine. The applicant researches and discovers that the first-order side frequency phenomenon of the engine is generated by dynamic balance, eccentricity, shaft resonance and/or assembly reasons, and the fault reason of the gear with the first-order side frequency phenomenon is taken as the first-order side frequency modulation reason. Based on the above, engine noise is analyzed, and when the engine noise comprises the first order side frequency of the gear, the fault reason of the gear is confirmed to be the first order side frequency modulation reason.
Through the technical scheme, the reason for generating the squeal of the specific gear is determined.
As an exemplary embodiment, after confirming that the squeal of the corresponding gear occurs, the method further includes: calculating a second-order side frequency of the gear based on the meshing frequency of the gear with the howling and the gear shaft frequency; and when the engine noise comprises the second-order side frequency of the gear, confirming that the failure reason of the gear is the second-order side frequency modulation reason.
For the technical scheme, the reason for generating the side frequency phenomenon of the corresponding order is fixed in the running process of the engine. The applicant researches and discovers that the second-order side frequency phenomenon of the engine is caused by gear machining, manufacturing and/or tooth profile problems, and the fault reason of the gear with the second-order side frequency phenomenon is taken as the second-order side frequency modulation reason. Based on the method, engine noise is analyzed, and when the engine noise comprises the second-order side frequency of the gear, the fault reason of the gear is determined to be the second-order side frequency modulation reason.
Through the technical scheme, the reason for generating the squeal of the specific gear is determined.
As an exemplary embodiment, when the engine noise is not in the gear side frequency section corresponding to the gear, it is confirmed that the gear howling does not occur.
For the above technical solution, as an optional embodiment, the over value of the non-howling engine gear meshing noise and the frequency doubling noise thereof may be obtained, and the over value of the current engine noise is compared with the over value of the non-howling engine gear meshing noise and the frequency doubling noise thereof, and when the over value of the current engine noise is not greater than the over value of the non-howling engine gear meshing noise and the frequency doubling noise thereof, it may be determined that the gear has not howling.
Through the technical scheme, the confirmation of the gear without squeaking is realized.
As an exemplary embodiment, before determining the gear side frequency interval corresponding to each gear based on the engine speed information and the information on the number of teeth of the plurality of gears, the method further comprises: determining a gear half-step side frequency interval corresponding to each gear based on the engine speed information and the number information of the teeth of the plurality of gears; and when the engine noise comprises the gear half-step side frequency interval, confirming that the engine has the over-squeal phenomenon.
For the technical scheme, the reason for generating the side frequency phenomenon of the corresponding order is fixed in the running process of the engine. The applicant researches and discovers that when the gear is subjected to squeal, a half-step side frequency phenomenon of the engine can be caused. Therefore, it is possible to confirm that the engine howling phenomenon occurs when the engine noise includes the gear half step edge frequency section.
As an exemplary embodiment, further comprising: acquiring multiple groups of engine rotating speed information and engine noise information; the gear in which the howling occurs is determined based on the plurality of sets of engine speed information and engine noise information.
According to the technical scheme, multiple groups of engine speed information and engine noise information can be acquired, and the gear with the howling can be determined according to each group of engine speed information and engine noise information, so that the influence of single group of data or external factors on the detection result can be eliminated.
Through the technical scheme, the technical effect of more accurately judging the gear squeal is achieved.
For convenience of explaining the technical scheme of the application, the application exemplarily provides an embodiment of detecting the gear squeal.
The first embodiment is as follows:
as shown in fig. 3, an embodiment includes the following process:
(1) acquiring near-field noise information of an engine gear chamber (based on the no-load variable working condition of the engine);
(2) extracting rotation speed information off line;
(3) the order slice is used for extracting and calculating the gear meshing order and the frequency multiplication noise override value (wherein the order width is 0.5), and calculating the gear meshing noise of the engine without howling and the frequency multiplication noise override value (based on statistics)
(4) Judging whether the gear meshing order and the frequency multiplication noise override value thereof are larger than the gear meshing noise of the engine without squeaking and the frequency multiplication noise override value thereof.
(5) And when the gear meshing order and the frequency doubling noise override value are smaller than the gear meshing noise and the frequency doubling noise override value of the engine without squeaking, judging that no noise exists.
(6) When the gear meshing order and the frequency doubling noise override value are smaller than those of the engine without squeal, judging that abnormal sound exists, collecting the steady-state data of the abnormal sound rotating speed working condition, carrying out side frequency modulation analysis, and determining the reason causing the squeal and the specific gear.
Example two:
taking the schematic diagram of the gear train shown in fig. 4 as an example, the noise corresponding to the abnormal sound rotating speed is tested and the noise spectrum curve shown in fig. 5 is obtained. Obtaining the current rotating speed of 1600r/min, the rotating speed of the driving gear A is 1600r/min, and the meshing frequency of the gear train is
1360Hz, the shaft frequency of the gear A is 26.7Hz, and the gear side frequency interval is 1333.3Hz and 1386.7 Hz. With reference to the noise frequency curve, canTo obtain 1333.3Hz and 1386.7Hz in the curve generated by the a gear.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, an optical disk) and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the methods according to the embodiments of the present application.
According to still another aspect of the embodiments of the present application, there is also provided a gear howling detection apparatus for implementing the above-mentioned gear howling detection method, as shown in fig. 6, including:
an obtaining module 602 for obtaining engine speed information and a plurality of gear tooth count information and engine noise information;
an interval determination module 604 that determines a gear side frequency interval corresponding to each gear based on the engine speed information and the number of teeth information of the plurality of gears;
and a howling determining module 606, configured to determine a gear in which howling occurs based on a gear side frequency interval corresponding to each gear.
It should be noted that the obtaining module 602 in this embodiment may be configured to execute the step S202, the interval determining module 604 in this embodiment may be configured to execute the step S204, and the howling determining module 606 in this embodiment may be configured to execute the step S206. It should be noted here that the modules described above are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to the disclosure of the above embodiments. It should be noted that the modules described above as part of the apparatus may be run in a hardware environment as shown in fig. 1, may be implemented by software, or may be implemented by hardware, where the hardware environment includes a network environment
According to yet another aspect of the embodiments of the present application, there is also provided a computer device for implementing the above gear howling detection method, where the computer device may be a server, a terminal, or a combination thereof.
Fig. 7 is a block diagram of an alternative computer device according to an embodiment of the present application, as shown in fig. 7, including a processor 702, a communication interface 704, a memory 706 and a communication bus 708, wherein the processor 702, the communication interface 704 and the memory 706 communicate with each other via the communication bus 708, wherein,
a memory 706 for storing computer programs;
the processor 702, when executing the computer program stored in the memory 706, performs the following steps:
acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information;
determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears;
and when the engine noise is in the gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the squeal.
Alternatively, in this embodiment, the communication bus may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
The communication interface is used for communication between the computer device and other devices.
The memory may include RAM, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The processor may be a general-purpose processor, and may include but is not limited to: a CPU (Central Processing Unit), an NP (Network Processor), and the like; but also a DSP (Digital Signal Processing), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment is not described herein again.
It can be understood by those skilled in the art that the structure shown in fig. 7 is only an illustration, and the device implementing the above gear howling detection method may be a terminal device, and the terminal device may be a terminal device such as a smart phone (e.g., an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, a Mobile Internet Device (MID), a PAD, and the like. Fig. 7 is a diagram illustrating a structure of the electronic device. For example, the terminal device may also include more or fewer components (e.g., network interfaces, display devices, etc.) than shown in FIG. 7, or have a different configuration than shown in FIG. 7.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disk, ROM, RAM, magnetic or optical disk, and the like.
According to still another aspect of an embodiment of the present application, there is also provided a storage medium. Alternatively, in the present embodiment, the storage medium may be a program code for executing the gear howling detection method.
Optionally, in this embodiment, the storage medium may be located on at least one of a plurality of network devices in a network shown in the above embodiment.
Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:
acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information;
determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears;
and when the engine noise is in the gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the squeal.
Optionally, the specific example in this embodiment may refer to the example described in the above embodiment, which is not described again in this embodiment.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a U disk, a ROM, a RAM, a removable hard disk, a magnetic disk, or an optical disk.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including instructions for causing one or more computer devices (which may be personal computers, servers, network devices, or the like) to execute all or part of the steps of the method described in the embodiments of the present application.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, and may also be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A gear squeal detection method, characterized in that the method comprises:
acquiring engine rotating speed information, a plurality of gear tooth number information and engine noise information;
determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears;
and when the engine noise is in the gear side frequency interval corresponding to the gear, confirming that the corresponding gear is the gear with the squeal.
2. The gear howling detection method of claim 1, wherein the determining a gear sideband interval for each gear based on the engine speed information and the number of teeth information of a plurality of gears comprises:
determining a gear meshing frequency and a gear shaft frequency corresponding to each gear based on the engine speed information and the gear tooth number information;
and determining a side frequency interval corresponding to each gear based on the gear meshing frequency and the gear shaft frequency.
3. The gear howling detection method of claim 2, after confirming that howling occurs to the corresponding gear, comprising:
calculating a first-order side frequency of the gear based on the meshing frequency and the gear shaft frequency of the gear with the howling;
when the engine noise comprises a first order sideband frequency of the gear, confirming that the failure reason of the gear is caused by the modulation of the first order sideband frequency.
4. The gear howling detection method of claim 2, after confirming that howling occurs to the corresponding gear, further comprising:
calculating a second-order side frequency of the gear based on the meshing frequency of the gear with the howling and the gear shaft frequency;
and when the engine noise comprises the second-order side frequency of the gear, confirming that the failure reason of the gear is the second-order side frequency modulation reason.
5. The gear howling detection method of claim 2, wherein it is confirmed that the gear howling does not occur when the engine noise is not in a gear side frequency section corresponding to the gear.
6. The gear howling detection method of claim 1, wherein before determining the gear sideband interval corresponding to each gear based on the engine speed information and the number of teeth information of a plurality of gears, further comprising:
determining a gear half-frequency interval corresponding to each gear based on the engine speed information and the number information of the teeth of the plurality of gears;
and when the engine noise comprises the gear half-step side frequency interval, confirming that the engine has the over-squeal phenomenon.
7. The gear howling detection method according to any one of claims 1 to 6, further comprising:
acquiring multiple groups of engine rotating speed information and engine noise information;
the gear in which the howling occurs is determined based on the plurality of sets of the engine speed information and the engine noise information.
8. A gear squeal detection device, comprising:
the acquiring module is used for acquiring engine rotating speed information and a plurality of gear tooth number information;
the interval determining module is used for determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the teeth of the plurality of gears;
and the squeal determining module is used for determining the gear with squeal based on the gear side frequency interval corresponding to each gear.
9. A computer device comprising a processor, a memory, and a program stored on the memory and executable on the processor, the processor when executing the program performing at least the following:
acquiring engine speed information and a plurality of gear tooth number information;
determining a gear side frequency interval corresponding to each gear based on the engine speed information and the number information of the plurality of gears;
and determining the gear with the squeal based on the gear side frequency interval corresponding to each gear.
10. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements a gear squeal detection method according to any one of claims 1 to 7.
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