CN113654637A - Motor shaft gear noise evaluation method, device, equipment and storage medium - Google Patents
Motor shaft gear noise evaluation method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for evaluating noise of a motor shaft gear. The method comprises the steps of collecting vibration signals through an acceleration sensor arranged at a first preset position of a motor shaft, collecting sound signals through a sound sensor arranged at a second preset position of the motor shaft, determining the hearing related quantity of a motor shaft gear according to the vibration signals and the sound signals, and determining the noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule. Because the noise evaluation is carried out by collecting the vibration signal and the sound signal of the motor shaft gear, the singleness of only collecting the sound signal in the traditional noise evaluation is avoided, and the accuracy of the noise evaluation is improved.
Description
Technical Field
The invention relates to the field of automobile noise testing, in particular to a method, a device, equipment and a storage medium for evaluating noise of a motor shaft gear.
Background
The traditional automobile transmission can generate knocking noise in the working process because most gears are in a normally meshed but force-free state, the knocking noise is generated by the non-bearing hollow gear pairs, and the hybrid transmission is more different from the traditional transmission in that the rotary inertia of a motor shaft is often ten times that of a traditional gear shaft because a motor rotor exists, so that the strong knocking of the gear of the motor shaft is easily caused when the motor torque is zero or too small in the hybrid mode, the knocking is different from the traditional transmission in that the traditional transmission is hollow gear knocking, the knocking of the gear of the motor shaft is light-load gear knocking, the knocking strength is higher, and the sound is more obvious. Therefore, knocking noise needs to be optimized, and the premise of optimizing the knocking noise is that the noise of a motor shaft gear needs to be identified and tested and evaluated, but noise identification and test evaluation in the prior art only collect and analyze sound signals, so that the test and evaluation of the noise are too single, and the efficiency of improving the noise optimization by a test result is low due to too low evaluation accuracy.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for evaluating noise of a motor shaft gear, and aims to solve the problems that in the prior art, the noise is tested and evaluated too singly, and the efficiency of improving noise optimization by a test result is low due to too low evaluation accuracy.
In order to achieve the purpose, the invention provides a motor shaft gear noise evaluation method, which comprises the following steps:
collecting vibration signals through an acceleration sensor arranged at a first preset position of a motor shaft, and collecting sound signals through a sound sensor arranged at a second preset position of the motor shaft;
determining the hearing related quantity of a gear of a motor shaft according to the vibration signal and the sound signal;
and determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule.
Optionally, the determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule includes:
determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule;
and determining a noise evaluation result of the motor shaft gear according to the noise signal score and a preset noise evaluation rule.
Optionally, the hearing related quantities comprise: a vibration hearing related quantity and a sound hearing related quantity;
the determining the hearing related quantity of the motor shaft gear according to the vibration signal and the sound signal comprises the following steps:
determining the vibration hearing related quantity according to the vibration signal;
determining the sound hearing related quantity according to the sound signal.
Optionally, the noise signal score comprises: a vibration noise signal score and a sound noise signal score;
the determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule comprises the following steps:
determining the vibration noise signal score of the motor shaft gear according to the vibration hearing related quantity and a preset noise signal score rule;
and determining the sound noise signal score of the motor shaft gear according to the sound hearing related quantity and the preset noise signal score rule.
Optionally, the determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule includes:
acquiring a vibration signal weight value and a sound signal weight value;
determining a vibration noise target comprehensive score corresponding to a vibration signal according to the vibration signal weight value and the vibration noise signal score, and determining a sound noise target comprehensive score corresponding to a sound signal according to the sound signal weight value and the sound noise signal score;
and determining a noise evaluation result of the motor shaft gear according to the vibration noise target comprehensive score, the sound noise target comprehensive score and a preset noise evaluation rule.
Optionally, after determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule, the method further includes:
determining a vibration signal weight value corresponding to the vibration noise signal score according to a preset signal weight evaluation standard;
and determining a sound signal weight value corresponding to the sound noise signal score according to the preset signal weight evaluation standard.
Optionally, the determining a vibration noise target comprehensive score corresponding to a vibration signal according to the vibration signal weight value and the vibration noise signal score, and determining a sound noise target comprehensive score corresponding to a sound signal according to the sound signal weight value and the sound noise signal score include:
determining an initial comprehensive vibration noise value corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal value;
determining an initial comprehensive sound noise value corresponding to the sound signal according to the sound signal weight value and the sound noise signal value;
determining a vibration noise target comprehensive score according to a preset counting rule and the vibration noise initial comprehensive score;
and determining a sound noise target comprehensive score according to the preset counting rule and the sound noise initial comprehensive score.
In order to achieve the above object, the present invention also provides a noise evaluation device for a motor shaft gear, including:
noise collection system: the vibration sensor is used for acquiring vibration signals through the acceleration sensor arranged at a first preset position of the motor shaft and acquiring sound signals through the sound sensor arranged at a second preset position of the motor shaft;
noise hearing device: the device is used for determining the hearing related quantity of the gear of the motor shaft according to the vibration signal and the sound signal;
noise evaluation device: and the noise evaluation result of the motor shaft gear is determined according to the hearing related quantity and a preset noise evaluation rule.
In addition, in order to achieve the above object, the present invention also provides a motor shaft gear noise evaluation apparatus, including: a memory, a processor, and a motor shaft gear noise evaluation program stored on the memory and executable on the processor, the motor shaft gear noise evaluation program configured to implement the steps of the motor shaft gear noise evaluation method as described above.
In addition, in order to achieve the above object, the present invention further provides a storage medium having a motor shaft gear noise evaluation program stored thereon, which when executed by a processor implements the steps of the motor shaft gear noise evaluation method as described above.
The method comprises the steps of collecting vibration signals through an acceleration sensor arranged at a first preset position of a motor shaft, collecting sound signals through a sound sensor arranged at a second preset position of the motor shaft, determining the hearing related quantity of a motor shaft gear according to the vibration signals and the sound signals, and determining the noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule. Compared with the prior art, the method and the device have the advantages that the vibration signals and the sound signals are collected, the vibration signals and the sound signals are subjected to data processing to obtain the corresponding hearing related quantity, the noise of the motor shaft gear is evaluated through the preset noise rule and the hearing related quantity, and the noise evaluation result is generated.
Drawings
FIG. 1 is a schematic structural diagram of a motor shaft gear noise evaluation device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a noise evaluation method for a motor shaft gear according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart of a noise evaluation method for a motor shaft gear according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart of a noise evaluation method for a motor shaft gear according to a third embodiment of the present invention;
fig. 5 is a block diagram showing the structure of the motor shaft gear noise evaluation apparatus according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a motor shaft gear noise evaluation device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the motor shaft gear noise evaluation apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the motor shaft gear noise evaluation apparatus, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a motor shaft gear noise evaluation program.
In the motor shaft gear noise evaluation apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the motor shaft gear noise evaluation apparatus of the present invention may be provided in the motor shaft gear noise evaluation apparatus, which calls the motor shaft gear noise evaluation program stored in the memory 1005 through the processor 1001 and executes the motor shaft gear noise evaluation method provided by the embodiment of the present invention.
An embodiment of the present invention provides a method for evaluating noise of a motor shaft gear, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the method for evaluating noise of a motor shaft gear according to the present invention.
In this embodiment, the method for evaluating noise of the motor shaft gear includes the following steps:
step S10: the vibration signal is collected through an acceleration sensor arranged at a first preset position of a motor shaft, and the sound signal is collected through a sound sensor arranged at a second preset position of the motor shaft.
It should be noted that the execution subject of the embodiment method may be a computing service device with data processing, network communication, and program running functions, such as a mobile phone, a tablet computer, a personal computer, and the like; the above-described motor shaft gear noise evaluation device having the same or similar function may also be used. The present embodiment and the following embodiments will be described by taking a motor shaft gear noise evaluation device as an example.
It can be understood that the vibration signal is a vibration signal generated by knocking of a gear of the motor shaft acquired by an acceleration sensor installed at a first preset position on a bearing seat of the motor shaft in a mixing mode of the motor shaft under test. The first preset position may be a position near the motor shaft bearing seat, for example, a position 10 cm, 8 cm, or 5 cm away from the motor shaft bearing seat, or other positions, which is not limited in this embodiment.
It should be noted that the sound signal is a sound signal generated by knocking of the gear of the motor shaft acquired by the sound sensor installed at the second preset position on the bearing seat of the motor shaft in the test motor shaft mixing mode. The second preset position may be a position near the motor shaft bearing seat, for example, a position 10 cm, 8 cm, or 5 cm away from the motor shaft bearing seat, or other positions, which is not limited in this embodiment.
It should be noted that, in a specific implementation, signals collected at different positions are compared, and an optimal mounting position is selected as a mounting position of the acceleration sensor and a mounting position of the sound sensor according to a comparison result, which is not limited in this embodiment.
In the specific implementation, an acceleration sensor is mounted at a position 8 cm away from a motor shaft bearing seat by adhering or mounting a bolt, and a sound sensor is mounted at a position 10 cm away from the motor shaft bearing seat, so that a vibration signal in the longitudinal direction generated by knocking of a motor shaft gear is obtained through the acceleration sensor, and a sound signal generated by knocking of the motor shaft gear is collected through the sound sensor.
Step S20: and determining the hearing related quantity of the motor shaft gear according to the vibration signal and the sound signal.
It should be noted that the hearing related quantity includes a vibration hearing related quantity and a sound hearing related quantity, the hearing related quantity of the motor shaft gear can be determined according to a vibration signal collected by an acceleration sensor installed on a bearing seat of the motor shaft and a sound signal collected by a sound sensor on the bearing seat of the motor shaft, and the collected vibration signal and sound signal are converted into the vibration hearing related quantity and the sound hearing related quantity by sound and vibration general analysis software (Artemis).
In the specific implementation, the sampling frequency of a vibration signal collected by an acceleration sensor installed on a bearing seat of a motor shaft by the noise evaluation equipment for the gear of the motor shaft is 24000Hz, the sampling frequency of a sound signal collected by a sound sensor installed on the bearing seat of the motor shaft is 48000Hz, the collected signal sampling frequency is processed by sound and vibration general analysis software, and the vibration and hearing related quantity obtained through processing is 54cp and 39 cp.
Further, in order to convert the hearing related quantity into more accurate data and improve the accuracy of noise evaluation, step S20 in this embodiment may specifically include:
determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule;
it should be noted that the noise signal score includes a vibration noise signal score and a sound noise signal score, the vibration noise signal score of the motor shaft gear is determined according to the vibration hearing related quantity and a preset noise signal score rule, and the sound noise signal score of the motor shaft gear is determined according to the sound hearing related quantity and the preset noise signal score rule.
Further, in order to avoid the single test data and make the noise evaluation test process more accurate, the step of determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule includes:
determining the vibration noise signal score of the motor shaft gear according to the vibration hearing related quantity and a preset noise signal score rule;
and determining the sound noise signal score of the motor shaft gear according to the sound hearing related quantity and the preset noise signal score rule.
It should be noted that the preset noise signal score rule refers to a score standard rule for determining the corresponding sound hearing related quantity and vibration hearing related quantity in advance through test data accumulation.
And determining a noise evaluation result of the motor shaft gear according to the noise signal score and a preset noise evaluation rule.
It should be noted that the preset noise signal score rule refers to a score criterion rule that determines beforehand, through test data accumulation, the correspondence between the sound hearing related amount and the vibration hearing related amount, for example, the noise signal score of the motor shaft gear is 4 when the vibration hearing related amount and the sound hearing related amount are 70cp and 45cp, respectively, the noise signal score of the motor shaft gear is 5 when the vibration hearing related amount and the sound hearing related amount are 60cp and 40cp, respectively, the noise signal score of the motor shaft gear is 6 when the vibration hearing related amount and the sound hearing related amount are 50cp and 35cp, respectively, the noise signal score of the motor shaft gear is 7 when the vibration hearing related amount and the sound hearing related amount are 40cp and 30cp, respectively, or the noise signal score of the motor shaft gear is 8 when the vibration hearing related amount and the sound hearing related amount are 30cp and 25cp, respectively, the present embodiment is not limited.
Further, the hearing related quantities include: in order to improve the accuracy of noise evaluation, the step S20 may specifically include:
determining the vibration hearing related quantity according to the vibration signal;
determining the sound hearing related quantity according to the sound signal.
The motor shaft gear noise evaluation device determines the vibration hearing related quantity according to the sampling frequency of the vibration signal collected by the acceleration sensor mounted on the bearing seat of the motor shaft, and determines the sound hearing related quantity according to the sampling frequency of the sound signal collected by the sound degree sensor mounted on the bearing seat of the motor shaft.
Further, in order to distinguish the importance degree of the vibration signal and the noise signal in the noise evaluation test, after determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule in the embodiment, the method further includes:
determining a vibration signal weight value corresponding to the vibration noise signal score according to a preset signal weight evaluation standard;
and determining a sound signal weight value corresponding to the sound noise signal score according to the preset signal weight evaluation standard.
The vibration signal weight value represents an influence factor ratio of noise generated by the vibration signal in the noise evaluation, and for example, if the influence factor ratio of noise generated by the vibration signal in the noise evaluation is 4, the vibration signal weight value is 0.4. The weighted value of the sound signal represents the ratio of the influence factors of the vibration signal generating noise in the noise evaluation, for example, if the ratio of the influence factors of the sound signal generating noise in the noise evaluation is 6, the weighted value of the vibration signal is 0.6, which is not limited in this embodiment.
It is understood that the preset signal weight evaluation criterion refers to a preset important ratio criterion related to the influence factors of the vibration signal and the sound signal in the noise evaluation, for example, when the vibration signal weight value is 0.4, the sound signal weight value is 0.6, and when the vibration signal weight value is 0.3, the sound signal weight value is 0.7, which is not limited in this embodiment.
Step S30: and determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule.
It should be noted that the preset noise evaluation rule refers to an evaluation rule set in advance for evaluating the knocking noise of the motor shaft gear, and the present embodiment is not limited thereto, according to subjective feelings corresponding to the test integrated score, for example, when the integrated score is 4 minutes, the subjective feelings corresponding to the integrated score are intolerable for severe knocking, when the integrated score is 5 minutes, the subjective feelings corresponding to the integrated score are unsatisfactory for significant knocking, when the integrated score is 6 minutes, the subjective feelings corresponding to the integrated score is not satisfactory for slight knocking, when the integrated score is 7 minutes, the subjective feelings corresponding to the integrated score are acceptable for imperceptible knocking, and when the integrated score is 8 minutes, the subjective feelings corresponding to no knocking are satisfactory.
It is understood that the noise evaluation result refers to a final subjective evaluation feeling of the motor shaft gear according to a preset noise evaluation rule, and the noise evaluation result may be a satisfactory result, for example, a no-tapping sound is satisfactory or a secret tapping sound is acceptable, or may be an unsatisfactory result, for example, a severe tapping sound is not tolerable, a significant tapping sound is unsatisfactory or a slight tapping sound is not satisfactory, and the embodiment is not limited.
In the specific implementation, the vibration signal sampling frequency acquired by the motor shaft gear noise evaluation equipment through a sensor is 24000Hz, the acquired sound signal sampling frequency is 48000Hz, the vibration hearing related quantity obtained by processing the vibration signal and the sound signal sampling frequency according to sound and vibration general analysis software is 54cp, the sound hearing related quantity is 39cp, the finally obtained comprehensive score is 6 min, and finally the fact that the slight knocking sound is unsatisfactory is determined according to the preset noise evaluation rule.
In the embodiment, vibration signals are collected through an acceleration sensor arranged at a first preset position of a motor shaft, sound signals are collected through a sound sensor arranged at a second preset position of the motor shaft, the hearing related quantity of a motor shaft gear is determined according to the vibration signals and the sound signals, and the noise evaluation result of the motor shaft gear is determined according to the hearing related quantity and a preset noise evaluation rule. Compared with the prior art, the method and the device have the advantages that the vibration signals and the sound signals are collected, the vibration signals and the sound signals are subjected to data processing to obtain the corresponding hearing related quantity, the noise of the motor shaft gear is evaluated through the preset noise rule and the hearing related quantity, and the noise evaluation result is generated.
Referring to fig. 3, fig. 3 is a schematic flow chart of a noise evaluation method for a motor shaft gear according to a second embodiment of the present invention.
Based on the first embodiment, in this embodiment, after step S30, the method further includes:
step S301: and acquiring a vibration signal weight value and a sound signal weight value.
It should be noted that: the vibration signal weight refers to an index parameter of the corresponding importance degree of the vibration signal correlation quantity in the evaluation process relative to the whole noise signal. The sound signal weight value refers to an index parameter of the corresponding importance degree of the sound signal correlation quantity in the evaluation process relative to the whole noise signal.
In a specific implementation, the motor shaft gear noise evaluation device obtains the evaluation index parameters of the vibration signal and the sound signal, namely the vibration signal weight and the sound signal weight, respectively, for example, when the score weight of the vibration hearing related quantity is 0.4, the sound signal weight is 0.6, and the embodiment is not limited.
Step S302: determining a vibration noise target comprehensive score corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal score, and determining a sound noise target comprehensive score corresponding to the sound signal according to the sound signal weight value and the sound noise signal score.
It should be noted that: the vibration noise target integrated score refers to an integrated score obtained by multiplying a vibration signal weight value by a vibration noise signal score, and for example, when the vibration signal weight value is 0.4 and the vibration noise signal score is 6, the vibration noise target integrated score is 2.4. The sound noise target comprehensive score refers to a comprehensive score obtained by multiplying a sound signal weight value by a sound noise signal score, for example, when the sound signal weight value is 0.6 and the sound noise signal score is 6, the sound noise target comprehensive score is 3.6, which is not limited in this embodiment.
In a specific implementation, the motor shaft gear noise evaluation device calculates a vibration noise signal score and a sound noise signal score according to a weight value and a signal score corresponding to a vibration signal and a sound signal in a noise evaluation test, and determines different respective influence factors of the vibration noise and the sound noise in the test according to a calculation result.
Step S303: and determining a noise evaluation result of the motor shaft gear according to the vibration noise target comprehensive score, the sound noise target comprehensive score and a preset noise evaluation rule.
It should be noted that: the preset noise evaluation rule refers to an evaluation rule set in advance for evaluating the knocking noise of the motor shaft gear, and according to subjective feelings corresponding to the test integrated score, for example, the subjective feelings corresponding to 4 minutes of the integrated score are intolerable for severe knocking sound, the subjective feelings corresponding to 5 minutes of the integrated score are unsatisfactory for obvious knocking sound, the subjective feelings corresponding to 6 minutes of the integrated score are unsatisfactory for slight knocking sound, the subjective feelings corresponding to 7 minutes of the integrated score are acceptable for impersonated knocking sound, and the subjective feelings corresponding to 8 minutes of the integrated score are satisfactory for no knocking sound, and the like, and this embodiment is not limited.
In the concrete implementation, the noise evaluation equipment of the motor shaft gear obtains a noise target comprehensive score of the motor shaft gear by summing a vibration noise target comprehensive score and a sound noise target score, evaluates the noise target comprehensive score of the motor shaft gear according to a preset noise evaluation rule to determine a noise evaluation result of the motor shaft gear, for example, when the noise target comprehensive score of the motor shaft gear is 4 minutes, the corresponding subjective feeling is that serious tapping sound cannot be tolerated, when the noise target comprehensive score of the motor shaft gear is 5 minutes, the corresponding subjective feeling is that obvious tapping sound is unsatisfactory, when the noise target comprehensive score of the motor shaft gear is 6 minutes, the corresponding subjective feeling is that slight tapping sound is unsatisfactory, when the noise target comprehensive score of the motor shaft gear is 7 minutes, the corresponding subjective feeling is that secret tapping sound is acceptable, and when the noise target comprehensive score of the motor shaft gear is 8 minutes, the corresponding satisfactory feeling is that no tapping sound is perceived For example, the present embodiment is not limited thereto.
According to the method, the vibration signal weight value and the sound signal weight value are obtained, the vibration noise target comprehensive score corresponding to the vibration signal is determined according to the vibration signal weight value and the vibration noise signal score, the sound noise target comprehensive score corresponding to the sound signal is determined according to the sound signal weight value and the sound noise signal score, then the noise evaluation result of the motor shaft gear is determined finally, the noise target comprehensive score of the vibration signal and the sound signal is calculated according to the vibration signal weight value and the sound noise signal weight value, the situation that the test evaluation of the noise is too single due to the fact that only the sound signal is collected is avoided, and the accuracy of analyzing noise generation factors in the noise test process is improved.
Referring to fig. 4, fig. 4 is a schematic flow chart of a noise evaluation method for a motor shaft gear according to a third embodiment of the present invention.
Based on the second embodiment, in this embodiment, the step S302 includes:
step S3021: and determining an initial comprehensive vibration noise score corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal score.
It should be noted that the initial integrated vibration noise score refers to an initial score of a vibration signal obtained by multiplying a vibration signal weight value by a vibration noise signal score, where the vibration signal is not processed by a preset counting rule.
In a specific implementation, the motor shaft gear noise evaluation device obtains an initial score of a vibration signal which is not processed by a preset counting rule by multiplying a vibration signal weight value and a vibration noise signal score, for example, if the vibration signal weight value is 0.3 and the vibration noise signal score is 6, the initial comprehensive score of the vibration noise is 1.8.
Step S3022: and determining an initial comprehensive sound noise score corresponding to the sound signal according to the sound signal weight value and the sound noise signal score.
It should be noted that the initial integrated score of the acoustic noise refers to an initial score of the acoustic signal that is obtained by multiplying the vibration signal weight value by the acoustic noise signal score and is not processed by a preset counting rule.
In a specific implementation, the motor shaft gear noise evaluation device obtains an initial score of a vibration signal which is not processed by a preset counting rule by multiplying a vibration signal weight value and a vibration noise signal score, for example, if the vibration signal weight value is 0.7 and the vibration noise signal score is 5, the initial comprehensive score of the vibration noise is 3.5.
Step S3023: and determining a vibration noise target comprehensive score according to a preset counting rule and the vibration noise initial comprehensive score.
It should be noted that the preset counting rule refers to a preset rule standard for converting an initial comprehensive score into a target comprehensive score, and when the decimal place of the initial comprehensive score is not 0 or 0.5, the decimal part is converted into the target comprehensive score with the decimal place of 0 or 0.5 according to the preset counting rule, for example, when the decimal place of the initial comprehensive score is 0.1 or 0.2, the decimal place is 0; when the decimal place of the initial integrated score is 0.3, 0.4, 0.5, 0.6 or 0.7, the decimal place is counted as 0.5; when the decimal place of the initial composite score is 0.8 or 0.9, the decimal place is counted as 0 and the integer place is added by 1.
In a specific implementation, the motor shaft gear noise evaluation device determines a vibration noise target comprehensive score according to a preset counting rule and the vibration noise initial comprehensive score, for example, when the vibration noise initial comprehensive score is 3.8, the vibration noise target comprehensive score is determined to be 4 according to the preset counting rule; when the initial integrated score of the vibration noise is 5.2, the target integrated score of the vibration noise is determined to be 5 according to a preset counting rule, which is not limited in this embodiment.
Step S3024: and determining a sound noise target comprehensive score according to the preset counting rule and the sound noise initial comprehensive score.
In a specific implementation, the motor shaft gear noise evaluation device determines a sound noise target comprehensive score according to a preset counting rule and the sound noise initial comprehensive score, for example, when the sound noise initial comprehensive score is 6.3, the sound noise target comprehensive score is 6.5 according to the preset counting rule; when the initial integrated score of the acoustic noise is 5.9, the target integrated score of the acoustic noise is determined to be 6 according to a preset counting rule, which is not limited in this embodiment.
According to the embodiment, the initial comprehensive vibration noise value corresponding to the vibration signal is determined according to the vibration signal weighted value and the vibration noise signal value, the initial comprehensive sound noise value corresponding to the sound signal is determined according to the sound signal weighted value and the sound noise signal value, the target comprehensive vibration noise value is determined according to the preset counting rule and the initial comprehensive vibration noise value, and the target comprehensive sound noise value is determined according to the preset counting rule and the initial comprehensive sound noise value, so that a large error generated in the actual comprehensive noise value calculation process is avoided, the accuracy of noise evaluation is improved, and the working efficiency of a noise evaluation test is improved.
Furthermore, an embodiment of the present invention further provides a storage medium, where a motor shaft gear noise evaluation program is stored, and the motor shaft gear noise evaluation program, when executed by a processor, implements the steps of the motor shaft gear noise evaluation method as described above.
Since the storage medium adopts all the technical solutions of all the embodiments, at least all the advantages brought by the technical solutions of the embodiments are available, and are not described in detail herein.
Referring to fig. 5, fig. 5 is a block diagram illustrating a structure of a noise evaluation apparatus for a motor shaft gear according to a first embodiment of the present invention.
As shown in fig. 5, the motor shaft gear noise evaluation device according to the embodiment of the present invention includes:
the noise collecting device 501 is used for collecting vibration signals through an acceleration sensor arranged at a first preset position of a motor shaft and collecting sound signals through a sound sensor arranged at a second preset position of the motor shaft;
a noise hearing device 502 for determining a hearing related quantity of the motor shaft gear according to the vibration signal and the sound signal;
and a noise evaluation device 503, configured to determine a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule.
In the embodiment, vibration signals are collected through an acceleration sensor arranged at a first preset position of a motor shaft, sound signals are collected through a sound sensor arranged at a second preset position of the motor shaft, the hearing related quantity of a motor shaft gear is determined according to the vibration signals and the sound signals, and the noise evaluation result of the motor shaft gear is determined according to the hearing related quantity and a preset noise evaluation rule. Compared with the prior art, the method and the device have the advantages that the vibration signals and the sound signals are collected, the vibration signals and the sound signals are subjected to data processing to obtain the corresponding hearing related quantity, the noise of the motor shaft gear is evaluated through the preset noise rule and the hearing related quantity, and the noise evaluation result is generated.
Further, the noise evaluation device is further configured to determine a noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule, and determine a noise evaluation result of the motor shaft gear according to the noise signal score and the preset noise evaluation rule.
Further, the noise hearing device is further configured to determine the vibration hearing related quantity according to the vibration signal, and determine the sound hearing related quantity according to the sound signal.
Further, the noise hearing device is further configured to determine a vibration noise signal score of the motor shaft gear according to the vibration hearing related quantity and a preset noise signal score rule, and determine a sound noise signal score of the motor shaft gear according to the sound hearing related quantity and the preset noise signal score rule.
Further, the noise evaluation device is further configured to obtain a vibration signal weight value and a sound signal weight value, determine a vibration noise target comprehensive score corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal score, determine a sound noise target comprehensive score corresponding to the sound signal according to the sound signal weight value and the sound noise signal score, and determine a noise evaluation result of the motor shaft gear according to the vibration noise target comprehensive score, the sound noise target comprehensive score and a preset noise evaluation rule.
Further, the noise evaluation device is further configured to determine a vibration signal weight value corresponding to the vibration noise signal score according to a preset signal weight evaluation criterion, and determine a sound signal weight value corresponding to the sound noise signal score according to the preset signal weight evaluation criterion.
Further, the noise evaluation device is further configured to determine a vibration noise initial comprehensive score corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal score, determine a sound noise initial comprehensive score corresponding to the sound signal according to the sound signal weight value and the sound noise signal score, determine a vibration noise target comprehensive score according to a preset counting rule and the vibration noise initial comprehensive score, and determine a sound noise target comprehensive score according to the preset counting rule and the sound noise initial comprehensive score.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may be referred to a motor shaft gear noise evaluation method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, 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 method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A noise evaluation method for a motor shaft gear is characterized by comprising the following steps:
collecting vibration signals through an acceleration sensor arranged at a first preset position of a motor shaft, and collecting sound signals through a sound sensor arranged at a second preset position of the motor shaft;
determining the hearing related quantity of a gear of a motor shaft according to the vibration signal and the sound signal;
and determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule.
2. The method for evaluating noise of a motor shaft gear according to claim 1, wherein the determining a noise evaluation result of the motor shaft gear according to the hearing related quantity and a preset noise evaluation rule includes:
determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule;
and determining a noise evaluation result of the motor shaft gear according to the noise signal score and a preset noise evaluation rule.
3. The motor shaft gear noise evaluation method of claim 1, wherein the auditory correlation amount comprises: a vibration hearing related quantity and a sound hearing related quantity;
the determining the hearing related quantity of the motor shaft gear according to the vibration signal and the sound signal comprises the following steps:
determining the vibration hearing related quantity according to the vibration signal;
determining the sound hearing related quantity according to the sound signal.
4. The motor shaft gear noise evaluation method according to claim 3, wherein the noise signal score includes: a vibration noise signal score and a sound noise signal score;
the determining the noise signal score of the motor shaft gear according to the hearing related quantity and a preset noise signal score rule comprises the following steps:
determining the vibration noise signal score of the motor shaft gear according to the vibration hearing related quantity and a preset noise signal score rule;
and determining the sound noise signal score of the motor shaft gear according to the sound hearing related quantity and the preset noise signal score rule.
5. The method for evaluating noise of a motor shaft gear according to claim 4, wherein said determining a noise evaluation result of the motor shaft gear based on the hearing related quantity and a preset noise evaluation rule comprises:
acquiring a vibration signal weight value and a sound signal weight value;
determining a vibration noise target comprehensive score corresponding to a vibration signal according to the vibration signal weight value and the vibration noise signal score, and determining a sound noise target comprehensive score corresponding to a sound signal according to the sound signal weight value and the sound noise signal score;
and determining a noise evaluation result of the motor shaft gear according to the vibration noise target comprehensive score, the sound noise target comprehensive score and a preset noise evaluation rule.
6. The method for evaluating noise of a motor shaft gear according to claim 5, wherein after determining the noise signal score of the motor shaft gear according to the auditory correlation amount and a preset noise signal score rule, the method further comprises:
determining a vibration signal weight value corresponding to the vibration noise signal score according to a preset signal weight evaluation standard;
and determining a sound signal weight value corresponding to the sound noise signal score according to the preset signal weight evaluation standard.
7. The method for evaluating noise of a motor shaft gear according to claim 6, wherein the determining a vibration noise target composite score corresponding to a vibration signal according to the vibration signal weight value and the vibration noise signal score, and determining a sound noise target composite score corresponding to a sound signal according to the sound signal weight value and the sound noise signal score comprises:
determining an initial comprehensive vibration noise value corresponding to the vibration signal according to the vibration signal weight value and the vibration noise signal value;
determining an initial comprehensive sound noise value corresponding to the sound signal according to the sound signal weight value and the sound noise signal value;
determining a vibration noise target comprehensive score according to a preset counting rule and the vibration noise initial comprehensive score;
and determining a sound noise target comprehensive score according to the preset counting rule and the sound noise initial comprehensive score.
8. A motor shaft gear noise evaluation device, characterized by, the motor shaft gear noise evaluation device includes:
noise collection system: the vibration sensor is used for acquiring vibration signals through the acceleration sensor arranged at a first preset position of the motor shaft and acquiring sound signals through the sound sensor arranged at a second preset position of the motor shaft;
noise hearing device: the device is used for determining the hearing related quantity of the gear of the motor shaft according to the vibration signal and the sound signal;
noise evaluation device: and the noise evaluation result of the motor shaft gear is determined according to the hearing related quantity and a preset noise evaluation rule.
9. An apparatus for evaluating noise of a gear of a motor shaft, comprising: a memory, a processor, and a motor shaft gear noise evaluation program stored on the memory and executable on the processor, the motor shaft gear noise evaluation program configured to implement the motor shaft gear noise evaluation method of any one of claims 1 to 7.
10. A storage medium having stored thereon a motor shaft gear noise evaluation program that, when executed by a processor, implements a motor shaft gear noise evaluation method according to any one of claims 1 to 7.
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| CN202111053612.3A CN113654637B (en) | 2021-09-08 | Motor shaft gear noise evaluation method, device, equipment and storage medium |
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| CN202111053612.3A CN113654637B (en) | 2021-09-08 | Motor shaft gear noise evaluation method, device, equipment and storage medium |
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