A motor noise control method and device, computer equipment and storage medium

Abstract

The present disclosure relates to the field of noise reduction technology, and specifically discloses a motor noise control method and device, computer equipment and a storage medium. The method comprises: determining the current driving mode of a vehicle and the required torque of the vehicle in the current driving mode; obtaining an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship between the target motor noise, the target motor speed and the target motor torque of each motor in the current driving mode; and adjusting the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the required torque of the vehicle. The present disclosure avoids the motor speed with serious noise by adjusting the torque without changing the physical structure of the driving mechanism, thereby achieving motor noise reduction, further reducing the noise in the vehicle, and having obvious noise reduction effect, simple and feasible implementation, and small influence on other performances of the vehicle.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of noise reduction technology, and particularly relates to a motor noise control method and device, computer equipment and a storage medium. BACKGROUND

[0002] During the driving process of the automobile, especially during acceleration or energy recovery, gear whine and motor whine are both obvious. The previous solution is generally to reduce noise through structural optimization, for example, changing motor electromagnetic force, gear modification, adding acoustic package, and increasing vehicle vibration isolation to reduce the whine problem in the vehicle.

[0003] However, the above method needs to change the mechanical structure of the driving mechanism, which is high in cost and has no obvious noise reduction effect. SUMMARY

[0004] The technical problem to be solved by the present disclosure is to realize automobile noise reduction without changing the physical structure of the driving mechanism.

[0005] To solve the above technical problem, the present disclosure discloses a motor noise control method, specifically, the method comprises:

[0006] determining a current driving mode of a vehicle and a demand torque of the vehicle in the current driving mode;

[0007] obtaining an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship between a target motor noise, a target motor speed and a target motor torque of each motor in the current driving mode;

[0008] distributing the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the demand torque of the vehicle.

[0009] Further, before determining the current driving mode of the vehicle, the method further comprises:

[0010] establishing an electric drive noise distribution matrix of the vehicle in a preset driving mode, wherein the driving mode of the vehicle comprises: constant speed driving mode, acceleration driving mode or deceleration driving mode.

[0011] In some implementable schemes, the establishing of the electric drive noise distribution matrix of the vehicle in the preset driving mode comprises:

[0012] obtaining a test noise corresponding to each motor in the preset driving mode;

[0013] obtaining a target motor whose test noise is greater than a preset noise;

[0014] The test noise of the target motor is taken as the target motor noise of the target motor.

[0015] After the target motor speed and the target motor torque corresponding to the target motor noise are obtained according to the target motor noise, an electric drive noise distribution matrix is established.

[0016] Further, after the test noise of the target motor is taken as the target motor noise of the target motor, the method further comprises:

[0017] The target motor noises are sorted according to a preset sorting rule.

[0018] In some implementable schemes, the sorting of the target motor noises according to a preset sorting rule comprises:

[0019] The target motor noises are sorted in ascending order, or

[0020] The target motor noises are sorted in descending order.

[0021] In another implementable scheme, the adjustment of the torque of each motor according to the electric drive noise distribution matrix comprises:

[0022] When the speed or the torque of any target motor reaches the target motor speed or the target motor torque corresponding thereto, the torque of each motor is distributed according to a preset distribution rule;

[0023] or

[0024] When the torque of any target motor reaches the target motor torque corresponding thereto, the torque of each motor is distributed according to a preset distribution rule.

[0025] In another implementable scheme, the distribution of the torque of each motor according to a preset distribution rule when the speed of any motor reaches the target motor speed corresponding thereto comprises:

[0026] When the speed of any target motor reaches the target motor speed corresponding thereto, the torque of each motor is distributed according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the whole vehicle; and when the torque of any target motor reaches the target motor torque corresponding thereto, the torque of each motor is distributed according to a preset distribution rule.

[0027] When the torque of any target motor reaches the target motor torque corresponding thereto, the torque of each motor is distributed according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the whole vehicle.

[0028] Further, the present specification also provides an electric motor noise control device, the device comprising:

[0029] a determination module configured to determine a current driving mode of the vehicle and a required torque of the vehicle in the current driving mode;

[0030] an acquisition module configured to acquire an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship among a target electric motor noise, a target electric motor speed and a target electric motor torque of each electric motor in the current driving mode;

[0031] a distribution module configured to distribute the torque of each electric motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each electric motor is equal to the required torque of the vehicle.

[0032] Further, the device further comprises:

[0033] a establishing module configured to establish an electric drive noise distribution matrix of the vehicle in a preset driving mode before determining the current driving mode of the vehicle, wherein the driving mode of the vehicle comprises a constant speed driving mode, an acceleration driving mode or a deceleration driving mode.

[0034] Further, the establishing module is specifically configured to:

[0035] acquire a test noise corresponding to each electric motor in the preset driving mode;

[0036] acquire a target electric motor whose test noise is greater than a preset noise;

[0037] set the test noise of the target electric motor as a target electric motor noise of the target electric motor;

[0038] establish the electric drive noise distribution matrix according to the target electric motor noise, the target electric motor speed and the target electric motor torque corresponding to the target electric motor noise.

[0039] Further, the device further comprises an ordering module configured to order the target electric motor noise according to a preset ordering rule after setting the test noise of the target electric motor as the target electric motor noise of the target electric motor.

[0040] Further, the ordering module is specifically configured to:

[0041] order the target electric motor noise in ascending order, or

[0042] order the target electric motor noise in descending order.

[0043] Further, the distribution module is specifically configured to:

[0044] when the rotational speed of any one target motor reaches the target motor rotational speed corresponding to the target motor, distributing the torque of each motor according to a preset distribution rule;

[0045] Alternatively,

[0046] when the torque of any one target motor reaches the target motor torque corresponding to the target motor, distributing the torque of each motor according to a preset distribution rule.

[0047] Further, the distribution module is further specifically used for:

[0048] when the rotational speed of any one target motor reaches the target motor rotational speed corresponding to the target motor, distributing the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the whole vehicle;

[0049] Alternatively,

[0050] when the torque of any one target motor reaches the target motor torque corresponding to the target motor, distributing the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the whole vehicle.

[0051] Further, the present specification also provides a computer device, comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to realize the motor noise control method described above.

[0052] Further, the present specification also provides a computer storage medium, comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to realize the motor noise control method described above.

[0053] By adopting the above technical solutions, the motor noise control method, device, computer device and storage medium provided by the present specification have the following beneficial effects:

[0054] The present disclosure avoids the motor rotational speed with serious noise by adjusting the torque without changing the physical structure of the driving mechanism, thereby realizing motor noise reduction, further reducing the noise in the vehicle, and the noise reduction effect is obvious, simple and feasible to implement, and has little effect on other performances of the whole vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present specification, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present specification, and all other drawings obtained by those of ordinary skill in the art without creative labor based on these drawings should also belong to the protection scope of the present specification.

[0056] Figure 1 is a flow chart of the motor noise control method according to an embodiment of the present specification;

[0057] Figure 2 is a schematic diagram of a motor noise transmission path according to an embodiment of the present specification;

[0058] Figure 3 is a schematic diagram of motor noise of a first motor according to an embodiment of the present specification;

[0059] Figure 4 is a schematic diagram of motor noise of a second motor according to an embodiment of the present specification;

[0060] Figure 5 is a flow chart of the motor noise control method according to another embodiment of the present specification;

[0061] Figure 6 is a flow chart of the method for establishing an electric drive noise distribution matrix according to an embodiment of the present specification;

[0062] Figure 7 is a structural block diagram of the motor noise control device according to the present specification. DETAILED DESCRIPTION

[0063] In order to make those skilled in the art better understand the present specification, the technical solutions in the embodiments of the present specification will be described clearly and completely in conjunction with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only some embodiments of the present specification, not all. Based on the embodiments in the present specification, all other embodiments obtained by those of ordinary skill in the art without creative labor should also belong to the protection scope of the present specification.

[0064] The term "one embodiment" or "an embodiment" as may appear in the specification is intended to mean a particular feature, structure, or characteristic described in the specification and is used in the "by way of illustration" and not by way of limitation. Also, the term "exemplary" is used herein to mean an example or illustration. The terms "include," "including," and "has," "having," and variants thereof, are intended to be inclusive in that a process, method, system, product, or apparatus that includes a list of steps or units is not necessarily limited to those steps or units but can include other steps or units not expressly listed or inherent to such process, method, system, product, or apparatus. Also, the term "or" as used in the description is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless specified otherwise, or clear from the context, the phrase "X employs A or B" is intended to mean that the process, method, system, product, or apparatus of X employs A or B. Also, the term "about" means approximately or nearly as understood by those of ordinary skill in the art. Also, the phrase "connected to" as used herein is intended to mean a direct connection between two elements without any other elements interposed therebetween.

[0065]

[0066] To solve the above technical problems, the present specification discloses a motor noise control method, specifically, as shown in the following formula (I), Figure 1 Figure 1 The flow chart of the motor noise control method according to an embodiment of the present specification is shown in the following formula (II), specifically, the method comprises the following steps:

[0067] S102, determine the current driving mode of the vehicle and the required torque of the vehicle in the current driving mode.

[0068] Specifically, the driving mode of the vehicle can include constant speed driving mode, acceleration driving mode or deceleration driving mode.

[0069] In an implementable scheme, the current driving mode of the vehicle can be determined according to the pedal stepping condition. The pedal includes brake pedal and accelerator pedal. When stepping on the accelerator pedal is changed to stepping on the brake pedal, or when the force of stepping on the accelerator pedal is reduced, it is determined that the vehicle is in deceleration driving mode; when stepping on the brake pedal is changed to stepping on the accelerator pedal, or when the force of stepping on the accelerator pedal is increased, it is determined that the vehicle is in acceleration driving mode; and when the force of stepping on the accelerator pedal is not changed to drive the vehicle, it is determined that the vehicle is in constant speed driving mode.

[0070] ​​It can be understood that the method for determining the current driving mode of the vehicle described above is only an example. In other implementable solutions, the current driving mode of the vehicle can also be determined based on the rate of change of the vehicle speed within a preset time. It can be understood that the preset time can be set according to actual needs. The rate of change of the vehicle speed can be positive or negative, and the rate of change can be compared with a preset rate of change. When the rate of change is positive and within the preset rate of change range, or when the rate of change is negative and within the preset rate of change range, it can be considered that the current driving mode of the vehicle is the uniform speed driving mode. When the rate of change is positive and not within the preset rate of change range, it can be considered that the vehicle is in the acceleration driving mode. When the rate of change is negative and not within the preset rate of change range, it can be considered that the vehicle is in the deceleration driving mode. Further, the current driving mode of the vehicle can also be determined based on other manners, which are not limited here.

[0071] Further, the current demand torque of the vehicle is calculated according to the current vehicle speed and the accelerator pedal opening degree. The table lookup calculation here is a common knowledge in the art, which is not repeated here. For example, it is known through table lookup calculation that when the vehicle is in the deceleration driving mode, the demand torque of the vehicle is -500 Nm, wherein the negative sign only indicates the acceleration direction, i.e., the vehicle is in the deceleration driving mode.

[0072] S104, obtaining an electric drive noise distribution matrix of the vehicle in the current driving mode.

[0073] Specifically, the electric drive noise distribution matrix includes the corresponding relationship among the target motor noise, the target motor speed and the target motor torque of each motor in the current driving mode.

[0074] It can be understood that the motor of the vehicle can be two or more. In the electric drive noise distribution matrix, the target motor noise, the target motor speed and the target motor torque of each motor have a one-to-one correspondence. The speed of the motor can be determined and changed according to the adjustment of the gear of the vehicle.

[0075] S106, distributing the torque of each motor according to the electric drive noise distribution matrix.

[0076] Specifically, the sum of the torque of each motor is equal to the demand torque of the vehicle.

[0077] In an implementable solution, step S106 can be completed based on the following steps:

[0078] When the speed of any target motor reaches its corresponding target motor speed, the torque of each motor is distributed according to a preset distribution rule;

[0079] Or in another implementable solution, step S106 can be completed based on the following steps:

[0080] When the torque of any one target motor reaches its corresponding target motor torque, the torque of each motor is distributed according to a preset distribution rule.

[0081] In some embodiments, when the rotational speed of any one motor reaches its corresponding target motor rotational speed, the torque of each motor is distributed according to a preset distribution rule, which specifically includes:

[0082] When the rotational speed of any one target motor reaches its corresponding target motor rotational speed, the torque of each motor is distributed according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the demand torque of the whole vehicle.

[0083] When the torque of any one target motor reaches its corresponding target motor torque, the torque of each motor is distributed according to a preset distribution rule, which includes:

[0084] When the torque of any one target motor reaches its corresponding target motor torque, the torque of each motor is distributed according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the demand torque of the whole vehicle.

[0085] It can be understood that the torque ratio of each motor can vary from 0 to 1.

[0086] The following will be specifically described with a specific example:

[0087] In this embodiment, the vehicle can include two motors, namely a first motor and a second motor, the first motor is used to drive the front wheels to rotate, and the second motor is used to drive the rear wheels to rotate. The total noise of the vehicle is derived from the sum of the noise of the first motor and the noise of the second motor, which corresponds to different rotational speeds and torques under different forms of working conditions.

[0088] In this specification, the current driving mode of the vehicle is taken as an example to be described in the deceleration driving mode. In the deceleration driving mode, the demand torque of the whole vehicle is -500 Nm, and it can be understood that the negative sign only indicates the direction of acceleration, i.e. the vehicle is in the deceleration driving mode, and the vehicle is in the 3rd gear position.

[0089] In the 3rd gear position, the noise transmission path of the first motor and the second motor in the deceleration driving mode of the vehicle is as shown in Figure 2

[0090] The motor noise of the first motor is transmitted to the vehicle interior via a structure path and an air path, wherein in the structure path, the motor noise of the first motor is transmitted to the vehicle interior by the front suspension, the front subframe and / or the vehicle body, the front subframe and the vehicle body are rigidly connected and have poor sound insulation performance. In the air path, the motor noise of the first motor is transmitted to the vehicle interior via the front wall.

[0091] ​Further, the motor noise of the second motor is also transmitted to the vehicle interior by a structure path and an air path. In the structure path, the second motor is transmitted to the vehicle interior by the rear suspension, the rear subframe and / or the vehicle body, the rear subframe and the vehicle body being flexibly connected and having good vibration isolation performance. In the air path, the second motor is transmitted to the vehicle interior via the rear vehicle body and the acoustic package (a general term for various sound-absorbing, sound-insulating, shock-absorbing and sealing components related to the NVH performance of the vehicle, such as front wall heat insulation pads, carpets, roofs, hole plugs, etc.). Therefore, due to the different paths of the first motor and the second motor transmitted to the vehicle interior, the sound insulation performance is also different.

[0092] Further, the motor noise of the second motor is also transmitted to the vehicle interior by a structure path and an air path. In the structure path, the second motor is transmitted to the vehicle interior by the rear suspension, the rear subframe and / or the vehicle body, the rear subframe and the vehicle body being flexibly connected and having good vibration isolation performance. In the air path, the second motor is transmitted to the vehicle interior via the rear vehicle body and the acoustic package (a general term for various sound-absorbing, sound-insulating, shock-absorbing and sealing components related to the NVH performance of the vehicle, such as front wall heat insulation pads, carpets, roofs, hole plugs, etc.). Therefore, due to the different paths of the first motor and the second motor transmitted to the vehicle interior, the sound insulation performance is also different. Figure 3 Figure 4 Further, the motor noise of the second motor is also transmitted to the vehicle interior by a structure path and an air path. In the structure path, the second motor is transmitted to the vehicle interior by the rear suspension, the rear subframe and / or the vehicle body, the rear subframe and the vehicle body being flexibly connected and having good vibration isolation performance. In the air path, the second motor is transmitted to the vehicle interior via the rear vehicle body and the acoustic package (a general term for various sound-absorbing, sound-insulating, shock-absorbing and sealing components related to the NVH performance of the vehicle, such as front wall heat insulation pads, carpets, roofs, hole plugs, etc.). Therefore, due to the different paths of the first motor and the second motor transmitted to the vehicle interior, the sound insulation performance is also different. Figure 3 Figure 4 Further, the motor noise of the second motor is also transmitted to the vehicle interior by a structure path and an air path. In the structure path, the second motor is transmitted to the vehicle interior by the rear suspension, the rear subframe and / or the vehicle body, the rear subframe and the vehicle body being flexibly connected and having good vibration isolation performance. In the air path, the second motor is transmitted to the vehicle interior via the rear vehicle body and the acoustic package (a general term for various sound-absorbing, sound-insulating, shock-absorbing and sealing components related to the NVH performance of the vehicle, such as front wall heat insulation pads, carpets, roofs, hole plugs, etc.). Therefore, due to the different paths of the first motor and the second motor transmitted to the vehicle interior, the sound insulation performance is also different.

[0093] After obtaining the motor noise at different motor speeds, the electric drive noise distribution matrix including the target motor noise, the target motor speed and the target motor torque is drawn as shown in Table 1, wherein the target motor noise, the target motor speed and the target motor torque of each motor correspond one by one, wherein the target motor speed and the target motor torque represent the current form operating point of the motor.

[0094]

[0095] Table 1

[0096] Figure 3 Figure 4 ​​​​As can be seen from Table 1, the motor noise of the first motor is relatively obvious when the motor speed is 1300 rpm, 2300 rpm and 3200 rpm, or the motor torque of the first motor is 600 Nm, 1000 Nm and 1500 Nm; the motor noise of the second motor is relatively obvious when the motor speed is 1600 rpm, 4000 rpm and 4300 rpm, or the motor torque of the second motor is 800 Nm, 2000 Nm and 2500 Nm, and needs to be reduced. Therefore, based on the electric drive noise distribution matrix, when the vehicle is in the deceleration driving mode, the torque of the first motor and the second motor can be redistributed when the speed of the first motor reaches 1300 rpm, 2300 rpm or 3200 rpm, or the motor torque of the first motor reaches 600 Nm, 1000 Nm or 1500 Nm, the torque ratio of the first motor is reduced and the torque ratio of the second motor is increased under the condition that the demand torque of the whole vehicle is unchanged, for example, the torque ratio of the first motor is reduced from the original 7 / 10 to 3 / 10, and the torque ratio of the second motor is increased from the original 3 / 10 to 7 / 10. The torque of the first motor and the second motor can also be redistributed when the speed of the second motor reaches 1600 rpm, 4000 rpm or 4300 rpm, or the motor torque of the second motor reaches 800 Nm, 2000 Nm or 2500 Nm, the torque ratio of the first motor is increased and the torque ratio of the second motor is reduced under the condition that the demand torque of the whole vehicle is unchanged, for example, the torque ratio of the first motor is increased from the original 1 / 10 to 7 / 10, and the torque ratio of the second motor is reduced from the original 9 / 10 to 3 / 10.

[0097] It can be understood that the torque ratio of the first motor and the torque ratio of the second motor can vary between 0 and 1, and the above-mentioned torque ratio is only a preferred scheme, which is not limited herein.

[0098] It can be understood that through the distribution torque control strategy of the first motor and the second motor in the present specification, the demand torque of the whole vehicle can be reduced only by reducing the proportion of the torque of different motors, the driving condition does not change the demand torque supply of the whole vehicle, the power performance of the whole vehicle is not affected, and the overall efficiency of the motor drive is less affected.

[0099] It can be understood that the number of motors listed above is only an example, and the motor noise control method of the present specification can also be applied to vehicles with multiple motors, and the principle is the same, which will not be repeated here.

[0100] In some other implementable schemes, another embodiment of the noise control method is also given in the present specification, as shown in Figure 5 The method comprises:

[0101] S202, determine the current driving mode of the vehicle and the demand torque of the vehicle in the current driving mode.

[0102] It can be understood that, before determining the current driving mode of the vehicle, the method further comprises:

[0103] S200, establish an electric drive noise distribution matrix of the vehicle in a preset mode.

[0104] It can be understood that the preset mode is a speed simulation test of the vehicle, and the simulated driving mode of the vehicle is obtained when the test noise of each motor at different speeds is obtained, which is used to obtain the electric drive noise distribution matrix based on the test noise and the simulated test speed. That is, it can be understood that the preset mode mentioned here is the driving mode of the vehicle, including uniform speed driving mode, acceleration driving mode and deceleration driving mode.

[0105] Specifically, as shown in Figure 6 in step S200, establishing an electric drive noise distribution matrix of the vehicle in a preset mode specifically comprises:

[0106] S301, obtaining the test noise of each motor corresponding to the preset driving mode;

[0107] S303, obtaining a target motor whose test noise is greater than a preset noise;

[0108] S305, taking the test noise of the target motor as the target motor noise of the target motor;

[0109] S307, according to the target motor noise, obtaining the target motor speed and the target motor torque corresponding to the target motor noise, and establishing the electric drive noise distribution matrix.

[0110] Further, in other implementable schemes, after taking the test noise of the target motor as the target motor noise of the target motor, the target motor noise can be sorted according to a preset sorting rule, for example: sorting the target motor noise in ascending order,

[0111] or,

[0112] sorting the target motor noise in descending order.

[0113] It can be understood that, by sorting the motor noise, each motor can be sorted based on the order of the motor noise, so that the torque ratio occupied by each motor can be determined more quickly, and the torque adjustment rate can be improved.

[0114] S204, acquire an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship among the target motor noise, the target motor speed and the target motor torque of each motor in the current driving mode.

[0115] S206, distribute the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the required torque of the whole vehicle.

[0116] It can be understood that in this embodiment, the unexplained parts can refer to the description of the above-mentioned embodiments.

[0117] Further, the present specification also provides a motor noise control device, as shown in the figure, the device comprises: Figure 7

[0118] a determination module for determining the current driving mode of the vehicle and the required torque of the whole vehicle in the current driving mode;

[0119] an acquisition module for acquiring an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship among the target motor noise, the target motor speed and the target motor torque of each motor in the current driving mode;

[0120] a distribution module for distributing the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the required torque of the whole vehicle.

[0121] Further, the device further comprises:

[0122] a establishing module for establishing an electric drive noise distribution matrix of the vehicle in a preset driving mode before determining the current driving mode of the vehicle, wherein the driving mode of the vehicle comprises: uniform speed driving mode, acceleration driving mode or deceleration driving mode.

[0123] Further, the establishing module is specifically used for:

[0124] acquiring the test noise corresponding to each motor in the preset driving mode;

[0125] acquiring the target motor whose test noise is greater than the preset noise;

[0126] taking the test noise of the target motor as the target motor noise of the target motor;

[0127] after acquiring the target motor speed and the target motor torque corresponding to the target motor noise according to the target motor noise, establishing the electric drive noise distribution matrix.

[0128] ​Further, the apparatus further comprises an ordering module configured to order the target motor noises according to a preset ordering rule after the test noise of the target motor is taken as the target motor noise of the target motor.

[0129] Further, the ordering module is specifically configured to:

[0130] order the target motor noises in ascending order, or

[0131] order the target motor noises in descending order.

[0132] Further, the distribution module is specifically configured to:

[0133] distribute the torque of each motor according to a preset distribution rule when the rotational speed of any one target motor reaches the target motor rotational speed corresponding to the target motor;

[0134] or distribute the torque of each motor according to a preset distribution rule when the torque of any one target motor reaches the target motor torque corresponding to the target motor.

[0135] Further, the distribution module is specifically configured to:

[0136] distribute the torque of each motor according to a preset torque ratio when the rotational speed of any one target motor reaches the target motor rotational speed corresponding to the target motor, wherein the torque ratio is a ratio of the torque of each motor to the demand torque of the whole vehicle;

[0137] or

[0138] distribute the torque of each motor according to a preset torque ratio when the torque of any one target motor reaches the target motor torque corresponding to the target motor, wherein the torque ratio is a ratio of the torque of each motor to the demand torque of the whole vehicle.

[0139] Further, the present specification also provides a computer device comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the processor loads and executes the at least one instruction, the at least one program, the code set or the instruction set to implement the motor noise control method described above.

[0140] Further, the present specification also provides a computer storage medium comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the processor loads and executes the at least one instruction, the at least one program, the code set or the instruction set to implement the motor noise control method described above.

[0141] The present specification avoids the motor speed with serious noise by adjusting the torque without changing the mechanical structure of the driving mechanism, so as to realize the motor noise reduction, and further reduce the noise in the vehicle, the noise reduction effect is obvious, the implementation is simple and feasible, and the influence on other performances of the vehicle is small.

[0142] It is worth noting that the above-mentioned device and terminal embodiments include various modules and units, which are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, the specific names of each module and unit are only for easy mutual distinction, and do not limit the protection scope of the present specification.

[0143] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the terminal embodiments described above are only illustrative, for example, the division of modules or units is only a logical function division, and actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between modules or units, which can be electrical, mechanical or other forms.

[0144] The above is only the preferred embodiment of the present specification, and is not used to limit the present specification, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification shall be included in the protection scope of the present specification.

Claims

1. A method of motor noise control, characterized by, The method comprises, determining a current driving mode of a vehicle and a required torque of the vehicle in the current driving mode; obtaining an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship among a target motor noise, a target motor speed and a target motor torque of each motor in the current driving mode; allocating the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the required torque of the vehicle; allocating the torque of each motor according to the electric drive noise distribution matrix comprises: when the speed of any target motor reaches the target motor speed corresponding thereto, allocating the torque of each motor according to a preset allocation rule, including: when the speed of any target motor reaches the target motor speed corresponding thereto, allocating the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the vehicle; or, when the torque of any target motor reaches the target motor torque corresponding thereto, allocating the torque of each motor according to a preset allocation rule, including: when the torque of any target motor reaches the target motor torque corresponding thereto, allocating the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the required torque of the vehicle.

2. The motor noise control method according to claim 1, characterized by, Before the determination of the current driving mode of the vehicle, the method further comprises: establishing an electric drive noise distribution matrix of the vehicle in a preset driving mode, wherein the driving mode of the vehicle comprises a constant-speed driving mode, an accelerating driving mode or a decelerating driving mode.

3. The motor noise control method according to claim 2, characterized by, The establishment of the electric drive noise distribution matrix of the vehicle in the preset driving mode comprises: obtaining a test noise corresponding to each motor in the preset driving mode; obtaining a target motor whose test noise is greater than a preset noise; taking the test noise of the target motor as the target motor noise of the target motor; after obtaining the target motor speed and the target motor torque corresponding to the target motor noise according to the target motor noise, establishing the electric drive noise distribution matrix.

4. The motor noise control method according to claim 3, characterized by, After taking the test noise of the target motor as the target motor noise of the target motor, the method further comprises: sorting the target motor noise according to a preset sorting rule.

5. The motor noise control method according to claim 4, characterized by, The sorting of the target motor noise according to the preset sorting rule comprises: sorting the target motor noise in ascending order or sorting the target motor noise in descending order.

6. An electric motor noise control device characterized by comprising: The device comprises: a determination module configured to determine a current driving mode of a vehicle and a required torque of the vehicle in the current driving mode; an obtaining module configured to obtain an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises a corresponding relationship among a target motor noise, a target motor speed and a target motor torque of each motor in the current driving mode; an allocation module configured to allocate the torque of each motor according to the electric drive noise distribution matrix, wherein the sum of the torque of each motor is equal to the required torque of the vehicle. According to the electric drive noise distribution matrix, distributing the torque of each motor comprises: When the rotational speed of any one target motor reaches the target motor rotational speed corresponding thereto, distributing the torque of each motor according to a preset distribution rule, comprising: When the rotational speed of any one target motor reaches the target motor rotational speed corresponding thereto, distributing the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the demand torque of the whole vehicle; Or, When the torque of any one target motor reaches the target motor torque corresponding thereto, distributing the torque of each motor according to a preset distribution rule, comprising: When the torque of any one target motor reaches the target motor torque corresponding thereto, distributing the torque of each motor according to a preset torque ratio, wherein the torque ratio is the ratio of the torque of each motor to the demand torque of the whole vehicle.

7. A computer device, comprising: The computer device comprises a processor and a memory, and the memory stores at least one instruction, which is loaded and executed by the processor to implement the motor noise control method according to any one of claims 1-5.

8. A computer storage medium, characterized in that, The computer device comprises a processor and a memory, and the memory stores at least one instruction, which is loaded and executed by the processor to implement the motor noise control method according to any one of claims 1-5.

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