Automobile vibration noise control method and device, equipment and storage medium

Abstract

The invention discloses an automobile vibration noise control method, device and equipment and a storage medium, and relates to the technical field of vehicle control, and the method comprises the following steps: obtaining a dual-engine noise characteristic table and a dual-engine efficiency characteristic table; determining a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; and the first motor and the second motor are controlled based on the target first motor output torque and the target second motor output torque, the torque output of each motor is reasonably matched, the efficiency is considered, meanwhile, the overall noise of the electric automobile carrying the dual-drive electric drive assembly is optimal, and the driving experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a method, device, equipment and storage medium for controlling automobile vibration noise. Background Art

[0002] NVH (noise, vibration and harshness) is an important indicator to measure the performance of a car, which directly affects the driving and riding comfort. In pure electric vehicles, due to the lack of noise from the internal combustion engine, other noise sources such as motors, reducers, wind noise and road noise become more significant.

[0003] When an electric drive assembly vehicle equipped with dual drive motors is running, the torque responses of the left and right motors of the electric drive assembly may have different combinations under the same vehicle output torque request, and its NVH and efficiency will also show large differences.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a method, device, equipment and storage medium for controlling automobile vibration noise, aiming to solve the technical problem of how to match the noise and efficiency of dual drive motors.

[0006] To achieve the above object, the present invention provides a method for controlling automobile vibration noise, the method for controlling automobile vibration noise is applied to an electric drive assembly vehicle equipped with dual drive motors, the dual drive motors including a first motor and a second motor, the method for controlling automobile vibration noise comprises the following steps:

[0007] Obtain dual-machine noise characteristic table and dual-machine efficiency characteristic table;

[0008] Determining a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table;

[0009] The first motor and the second motor are controlled based on the target first motor output torque and the target second motor output torque.

[0010] In one embodiment, the step of obtaining the dual-machine noise characteristic table includes:

[0011] Acquire a noise characteristic table of the first motor and a noise characteristic table of the second motor;

[0012] A dual-machine noise characteristic table is determined based on the noise characteristic table of the first motor and the noise characteristic table of the second motor.

[0013] In one embodiment, the step of obtaining the noise characteristic table of the first motor and the noise characteristic table of the second motor includes:

[0014] Controlling the first motor to work alone;

[0015] Acquiring noise data of the first motor at various torques;

[0016] constructing a noise characteristic table of the first motor based on noise data of the first motor at various torques;

[0017] Controlling the second motor to work alone;

[0018] Acquiring noise data of the second motor at various torques;

[0019] A noise characteristic table of the second motor is constructed based on the noise data of the second motor at various torques.

[0020] In one embodiment, the step of determining the dual-machine noise characteristic table based on the noise characteristic table of the first motor and the noise characteristic table of the second motor includes:

[0021] Obtain the required torque and speed of the vehicle;

[0022] The noise characteristic table of the first motor and the noise characteristic table of the second motor are processed by the required torque of the whole vehicle and the required speed of the whole vehicle to obtain the noise value and efficiency value of the dual motor under different torque combinations of the first motor and the second motor;

[0023] Based on the dual-motor noise values ​​under different torque combinations of the first motor and the second motor, a dual-motor noise characteristic table is obtained.

[0024] In one embodiment, the step of obtaining the dual-machine efficiency characteristic table includes:

[0025] Based on the different torques of the first motor and the different torques of the second motor, a dual-motor efficiency characteristic table under different torque combinations at various speeds is obtained.

[0026] In one embodiment, the step of determining the target first motor output torque and the target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table includes:

[0027] Normalizing the dual-machine efficiency characteristic table and the dual-machine noise characteristic table respectively to obtain a dual-machine efficiency normalized characteristic table and a dual-machine noise normalized characteristic table;

[0028] The target first motor output torque and the target second motor output torque are determined based on the dual-machine efficiency normalization characteristic table and the dual-machine noise normalization characteristic table.

[0029] In one embodiment, the step of determining the target first motor output torque and the target second motor output torque based on the dual-machine efficiency normalized characteristic table and the dual-machine noise normalized characteristic table includes:

[0030] Obtain torque demand based on vehicle information;

[0031] Based on the torque demand, weights are assigned to the normalized noise and normalized efficiency corresponding to the dual-machine efficiency normalized characteristic table and the dual-machine noise normalized characteristic table, respectively, to obtain the target first motor output torque and the target second motor output torque when the noise and efficiency match.

[0032] In addition, to achieve the above-mentioned purpose, the present invention also provides a control device for automobile vibration noise, the device comprising:

[0033] An acquisition module, used to acquire a dual-machine noise characteristic table and a dual-machine efficiency characteristic table;

[0034] A processing module, configured to determine a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table;

[0035] A control module is configured to control the first motor and the second motor based on the target first motor output torque and the target second motor output torque.

[0036] In addition, to achieve the above-mentioned purpose, the present invention also proposes a control device for automobile vibration noise, which includes: a memory, a processor, and a control program for automobile vibration noise stored in the memory and executable on the processor, wherein the control program for automobile vibration noise is configured to implement the steps of the control method for automobile vibration noise as described above.

[0037] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which a control program for automobile vibration noise is stored. When the control program for automobile vibration noise is executed by a processor, the steps of the method for controlling automobile vibration noise as described above are implemented.

[0038] One or more technical solutions proposed in this application have at least the following technical effects:

[0039] Obtain a dual-machine noise characteristic table and a dual-machine efficiency characteristic table; determine the target output torque of the first motor and the target output torque of the second motor based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; control the first motor and the second motor based on the target output torque of the first motor and the target output torque of the second motor, and optimize the vehicle noise of the electric vehicle equipped with a dual-drive electric drive assembly while taking efficiency into consideration by reasonably matching the torque output of each motor, thereby improving the user's driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 A flow chart of a first embodiment of a method for controlling automobile vibration noise of the present application;

[0043] Figure 2 A schematic diagram of a dual-motor electric drive assembly provided in Example 1 of the method for controlling automobile vibration noise of the present application;

[0044] Figure 3 A schematic diagram of a dual-motor noise map under various required torques provided in Example 1 of the method for controlling automobile vibration noise of the present application;

[0045] Figure 4 A schematic diagram of a normalized map of dual motor noise at each required torque provided in Example 1 of the method for controlling automobile vibration noise of the present application;

[0046] Figure 5 A flow chart of the second embodiment of the method for controlling automobile vibration noise of the present application;

[0047] Figure 6 A noise map table of a left motor or a right motor provided in Embodiment 2 of the method for controlling automobile vibration noise of the present application;

[0048] Figure 7 A schematic diagram of a dual-motor noise map at various required torques at 5000 rpm provided in Embodiment 2 of the method for controlling automobile vibration noise of the present application;

[0049] Figure 8 A flow chart of the third embodiment of the method for controlling automobile vibration noise of the present application;

[0050] Fig. 9 A schematic diagram of a normalized map of the efficiency of dual motors operating at various required torques at 5000 rpm provided in Example 3 of the method for controlling automobile vibration noise of the present application;

[0051] Fig.10 A schematic diagram of the output torque of the left and right motors when the noise efficiency is optimally matched, provided in Embodiment 3 of the method for controlling automobile vibration noise of the present application;

[0052] Fig.11 A flowchart of the third embodiment of the method for controlling automobile vibration noise of the present application;

[0053] Fig.12 This is a schematic diagram of the module structure of the vehicle vibration noise control device according to an embodiment of the present application;

[0054] Fig.13 This is a schematic diagram of the device structure of the hardware operating environment involved in the method for controlling automobile vibration noise in an embodiment of the present application.

[0055] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0057] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0058] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a vehicle vibration noise control device, etc. The following takes the vehicle vibration noise control device as an example to illustrate this embodiment and the following embodiments.

[0059] Based on this, the embodiment of the present application provides a method for controlling automobile vibration noise, referring to Figure 1 , Figure 1 This is a flow chart of a first embodiment of a method for controlling automobile vibration noise of the present application.

[0060] In this embodiment, the method for controlling automobile vibration noise includes steps S10 to S30:

[0061] Step S10, obtaining a dual-machine noise characteristic table and a dual-machine efficiency characteristic table;

[0062] like Figure 2 As shown, Figure 2 It is a schematic diagram of a dual-motor electric drive assembly. The strategy for controlling automobile vibration noise is applied to an electric drive assembly vehicle equipped with dual drive motors. The dual drive motors include a first motor and a second motor, i.e., a left motor and a right motor. The electric drive assembly can be installed on a anechoic chamber test bench.

[0063] It should be noted that the dual-machine noise characteristic table is the dual-motor noise map table under various speeds and different torque combinations, and the dual-machine efficiency characteristic table is the dual-motor efficiency map table under various speeds and different torque combinations.

[0064] Furthermore, the step of obtaining the dual-machine efficiency characteristic table includes:

[0065] Based on the different torques of the first motor and the different torques of the second motor, a dual-motor efficiency characteristic table under different torque combinations at various speeds is obtained.

[0066] In the specific implementation, the dual-motor efficiency map under different torque combinations at different speeds is obtained through bench testing and integrated into the motor controller MCU; Figure 3 The following table shows the efficiency map of different left and right motors with different torque combinations when the required speed is 5000rpm. It means the efficiency value when the left and right motors output x and y Nm torque respectively.

[0067] Identification Figure 3 Highest efficiency in The data in the table are divided by the efficiency value to obtain the normalized efficiency map table, such as Figure 4 The efficiency values ​​in the table are express.

[0068] Step S20, determining a target first motor output torque and a target second motor output torque based on a dual-machine efficiency characteristic table and a dual-machine noise characteristic table;

[0069] It should be noted that the target first motor output torque and the target second motor output torque are the output torques of the left and right motors when the noise efficiency is optimally matched.

[0070] Step S30 : controlling the first motor and the second motor based on the target output torque of the first motor and the target output torque of the second motor.

[0071] In the specific implementation, the control algorithm is implemented to accurately control the torque output of each motor through the vehicle controller (VCU) and the motor controller (MCU), ensuring that it works according to the predetermined torque distribution strategy to achieve the optimization of the vehicle performance.

[0072] The present embodiment provides a method for controlling automobile vibration noise, obtaining a dual-machine noise characteristic table and a dual-machine efficiency characteristic table; determining a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; controlling the first motor and the second motor based on the target first motor output torque and the target second motor output torque, by reasonably matching the torque output of each motor, while taking efficiency into consideration, the whole vehicle noise of an electric vehicle equipped with a dual-drive electric drive assembly is optimized, thereby improving the user's driving experience.

[0073] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 5 , step S10, the vehicle vibration noise control method comprises steps S101 to S101:

[0074] Step S101, obtaining a noise characteristic table of a first motor and a noise characteristic table of a second motor;

[0075] It should be noted that the noise characteristic table of the first motor and the noise characteristic table of the second motor are noise map tables for obtaining the left and right motors with different speed and torque combinations.

[0076] Furthermore, the step S101 includes:

[0077] Controlling the first motor to work alone;

[0078] Acquiring noise data of the first motor at various torques;

[0079] constructing a noise characteristic table of the first motor based on noise data of the first motor at various torques;

[0080] Controlling the second motor to work alone;

[0081] Acquiring noise data of the second motor at various torques;

[0082] A noise characteristic table of the second motor is constructed based on the noise data of the second motor at various torques.

[0083] It should be noted that, through the vehicle controller PDCU, when the single motors are working separately, the torque output of the full accelerator pedal of the whole vehicle is limited to 10%, 20%, ..., 100% of the torque of a single motor.

[0084] The vibration or noise map under various torque conditions of a single motor is obtained through a near-field microphone or vibration sensor and integrated into the motor controller MCU, such as Figure 6 As shown, the same method is used to obtain the noise map of another motor.

[0085] In the specific implementation, the 1m noise order value of the motor is obtained through the microphone and data acquisition system and integrated into the motor controller MCU, and the noise map of the acceleration condition under different throttle openings is obtained through the whole vehicle.

[0086] Step S102: determining a dual-machine noise characteristic table based on the noise characteristic table of the first motor and the noise characteristic table of the second motor.

[0087] It should be noted that the dual-machine noise characteristic table is the dual-motor noise map table under different torque combinations at various speeds.

[0088] Furthermore, the step S102 includes:

[0089] Obtain the required torque and speed of the vehicle;

[0090] The noise characteristic table of the first motor and the noise characteristic table of the second motor are processed by the required torque and the required speed of the whole vehicle to obtain the noise value and efficiency value of the dual motor under different torque combinations of the first motor and the second motor;

[0091] Based on the dual-motor noise values ​​under different torque combinations of the first motor and the second motor, a dual-motor noise characteristic table is obtained.

[0092] It should be noted that, according to the required torque T* and speed N* of the whole vehicle, real-time calculations are performed to make the left motor speed NL and the right motor speed NR consistent with the required speed NL, that is, NL=NR=N*. When the sum of the left and right motor torques is the required torque TL+TR=T*, the dual motor noise values ​​under different combinations of left and right motor torques (TLi, TRi) are obtained, such as Figure 7 shown.

[0093] In the specific implementation, the following takes the required speed N*=5000rpm and the required torque T*=120Nm as an example: First, a total of 7 torque combinations are identified, and their sound pressure level combinations are

[0094]

[0095] For example, express Figure 7 The noise sound pressure level value when the left motor outputs x Nm torque is superimposed on the noise value when the right motor outputs y Nm torque. The noise values ​​of the left and right motors are superimposed by the following formula:

[0096] This method is used to obtain the noise map table of different torque combinations at different speeds, such as Figure 7 Shown is the noise map of different torque combinations when N*=5000rpm.

[0097] The present embodiment provides a method for controlling automobile vibration noise, which obtains left and right motor noise maps of different speed and torque combinations through a test bench or a whole vehicle, and obtains noise maps of different torque combinations of each speed by superimposing the left and right motor noise maps according to the required torque and required speed of the whole vehicle.

[0098] Based on the first and second embodiments of the present application, in the third embodiment of the present application, the same or similar contents as those in the above embodiments can be referred to the above introduction, and will not be described in detail later. Figure 8 , step S20, the vehicle vibration noise control method further includes steps S201-S202:

[0099] Step S201, normalizing the dual-machine efficiency characteristic table and the dual-machine noise characteristic table respectively to obtain a dual-machine efficiency normalized characteristic table and a dual-machine noise normalized characteristic table;

[0100] In the specific implementation, the noise is normalized into dimensionless data. Figure 7 Take the reciprocal of all values ​​in the table and identify the maximum value in the table As a normalization benchmark, divide the reciprocal value in the table by The noise normalization processing table can be obtained, such as Fig. 9 The values ​​in the table are express.

[0101] Identification Figure 3 Highest efficiency in The data in the table are divided by the efficiency value to obtain the normalized efficiency map table, such as Figure 4 The efficiency values ​​in the table are express.

[0102] Step S202 : determining a target output torque of the first motor and a target output torque of the second motor based on a dual-machine efficiency normalization characteristic table and a dual-machine noise normalization characteristic table.

[0103] It should be noted that the target first motor output torque and the target second motor output torque are the output torques of the left and right motors when the noise efficiency is optimally matched.

[0104] Furthermore, the step S202 includes:

[0105] Obtain torque demand based on vehicle information;

[0106] Based on the torque demand, weights are assigned to the normalized noise and normalized efficiency corresponding to the dual-machine efficiency normalized characteristic table and the dual-machine noise normalized characteristic table, respectively, to obtain the target output torque of the first motor and the target output torque of the second motor when the noise and efficiency match.

[0107] It should be noted that the weight coefficient α can be defined according to the vehicle model positioning and usage scenarios. For vehicles and vehicle usage scenarios that focus on vibration and noise perception, 0.6≤α≤1; for vehicles and vehicle usage scenarios that focus more on endurance, 0≤α<0.6.

[0108] For example, the normalized noise of the required speed N*=5000rpm and the required torque T*=120Nm like Fig. 9 Median, normalized efficiency as Figure 4 The median value is given a weight coefficient of α = 0.7 for the scene with a heavy vibration noise, and the calculation is Fig.10 .

[0109] The optimal torque combination is (TL 60 , TR 60 ). That is, when the vehicle controller PDCU requires a speed N*=5000rpm and a torque T*=120Nm, the electric drive left motor controller outputs a speed NL=5000rpm and an output torque TL=60Nm, and the electric drive right motor controller outputs a speed NR=5000rpm and an output torque TR=60Nm.

[0110] In the specific implementation, according to the vehicle model positioning, the normalized noise of each torque matching condition under specific torque requirements is given and normalized efficiency The values ​​are assigned weights α and 1-α (0≤α≤1) respectively. Determine the left and right motor torque combination (TL) for optimal noise and efficiency matching x , TR y ) as the output torque.

[0111] like Fig.11 As shown, this strategy determines the dual-motor noise map under specific torque demand through the left motor noise map and the right motor noise map, obtains the dual electric drive efficiency map under specific torque demand, and processes the dual-motor noise map under specific torque demand and the dual electric drive efficiency map under specific torque demand through the weight coefficient, combined with the torque demand and vehicle model demand, to obtain the motor operating condition point.

[0112] The present embodiment provides a method for controlling automobile vibration noise. Through the dual-motor noise map and normalization processing process under specific speed and torque requirements, a normalized noise map of the dual motors and a normalized efficiency map of the dual motors are obtained, and by using scenarios and weight values ​​to match the optimal operating points of the dual-motor efficiency and noise, the optimal output torque value corresponding to the dual motors is obtained.

[0113] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the method for controlling automobile vibration noise of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0114] This application also provides a control device for automobile vibration noise, please refer to Fig.12 , the vehicle vibration noise control device comprises:

[0115] An acquisition module 10 is used to acquire a dual-machine noise characteristic table and a dual-machine efficiency characteristic table;

[0116] A processing module 20, for determining a target first motor output torque and a target second motor output torque based on a dual-machine efficiency characteristic table and a dual-machine noise characteristic table;

[0117] The control module 30 is configured to control the first motor and the second motor based on a target output torque of the first motor and a target output torque of the second motor.

[0118] The automobile vibration noise control device provided by the present application adopts the automobile vibration noise control method in the above embodiment, which can solve the technical problem of how to match the noise and efficiency of the dual drive motor. Compared with the prior art, the beneficial effects of the automobile vibration noise control device provided by the present application are the same as the beneficial effects of the automobile vibration noise control method provided by the above embodiment, and the other technical features of the automobile vibration noise control device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0119] The present application provides a vehicle vibration noise control device, the vehicle vibration noise control device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the vehicle vibration noise control method in the above-mentioned embodiment 1.

[0120] Reference below Fig.13 , which shows a schematic diagram of the structure of a vehicle vibration noise control device suitable for implementing the embodiment of the present application. The vehicle vibration noise control device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Fig.13 The vehicle vibration noise control device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0121] like Fig.13 As shown, the control device for automobile vibration noise may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the control device for automobile vibration noise are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the control device of automobile vibration noise to communicate with other devices wirelessly or by wire to exchange data. Although the control device of automobile vibration noise with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have instead.

[0122] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0123] The automobile vibration noise control device provided by the present application adopts the automobile vibration noise control method in the above embodiment, which can solve the technical problem of how to match the noise and efficiency of the dual drive motor. Compared with the prior art, the beneficial effects of the automobile vibration noise control device provided by the present application are the same as the beneficial effects of the automobile vibration noise control method provided by the above embodiment, and the other technical features in the automobile vibration noise control device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0124] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0125] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0126] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the vehicle vibration noise control method in the above-mentioned embodiment.

[0127] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0128] The computer-readable storage medium may be included in the vehicle vibration noise control device; or may exist independently without being assembled into the vehicle vibration noise control device.

[0129] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the control device of the automobile vibration noise, the control device of the automobile vibration noise: obtains a dual-machine noise characteristic table and a dual-machine efficiency characteristic table; determines the target first motor output torque and the target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; and controls the first motor and the second motor based on the target first motor output torque and the target second motor output torque.

[0130] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0131] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0132] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0133] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned method for controlling automobile vibration noise, and can solve the technical problem of how to match the noise and efficiency of dual drive motors. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the method for controlling automobile vibration noise provided by the above-mentioned embodiment, and will not be elaborated here.

[0134] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned method for controlling automobile vibration noise when executed by a processor.

[0135] The computer program product provided by the present application can solve the technical problem of how to match the noise and efficiency of the dual drive motor. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the automobile vibration noise control method provided by the above embodiment, which will not be repeated here.

[0136] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for controlling automobile vibration noise, characterized in that: The method for controlling automobile vibration noise is applied to an electric drive assembly vehicle equipped with dual drive motors, wherein the dual drive motors include a first motor and a second motor. The method for controlling automobile vibration noise includes the following steps: Obtain dual-machine noise characteristic table and dual-machine efficiency characteristic table; Determining a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; The first motor and the second motor are controlled based on the target first motor output torque and the target second motor output torque.

2. The method for controlling automobile vibration noise according to claim 1, characterized in that: The step of obtaining the dual-machine noise characteristic table includes: Acquire a noise characteristic table of the first motor and a noise characteristic table of the second motor; A dual-machine noise characteristic table is determined based on the noise characteristic table of the first motor and the noise characteristic table of the second motor.

3. The method for controlling automobile vibration noise as claimed in claim 2, characterized in that: The step of obtaining the noise characteristic table of the first motor and the noise characteristic table of the second motor includes: Controlling the first motor to work alone; Acquiring noise data of the first motor at various torques; constructing a noise characteristic table of the first motor based on noise data of the first motor at various torques; Controlling the second motor to work alone; Acquiring noise data of the second motor at various torques; A noise characteristic table of the second motor is constructed based on the noise data of the second motor at various torques.

4. The method for controlling automobile vibration noise as claimed in claim 2, characterized in that: The step of determining the dual-machine noise characteristic table based on the noise characteristic table of the first motor and the noise characteristic table of the second motor includes: Obtain the required torque and speed of the vehicle; The noise characteristic table of the first motor and the noise characteristic table of the second motor are processed by the required torque of the whole vehicle and the required speed of the whole vehicle to obtain the noise value and efficiency value of the dual motor under different torque combinations of the first motor and the second motor; Based on the dual-motor noise values ​​under different torque combinations of the first motor and the second motor, a dual-motor noise characteristic table is obtained.

5. The method for controlling automobile vibration noise according to claim 1, characterized in that: The step of obtaining the dual-machine efficiency characteristic table includes: Based on the different torques of the first motor and the different torques of the second motor, a dual-motor efficiency characteristic table under different torque combinations at various speeds is obtained.

6. The method for controlling automobile vibration noise according to claim 1, characterized in that: The step of determining the target first motor output torque and the target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table includes: Normalizing the dual-machine efficiency characteristic table and the dual-machine noise characteristic table respectively to obtain a dual-machine efficiency normalized characteristic table and a dual-machine noise normalized characteristic table; The target first motor output torque and the target second motor output torque are determined based on the dual-machine efficiency normalization characteristic table and the dual-machine noise normalization characteristic table.

7. The method for controlling automobile vibration noise according to claim 6, characterized in that: The step of determining the target first motor output torque and the target second motor output torque based on the dual-machine efficiency normalized characteristic table and the dual-machine noise normalized characteristic table includes: Obtain torque demand based on vehicle information; Based on the torque demand, weights are assigned to the normalized noise and normalized efficiency corresponding to the dual-machine efficiency normalized characteristic table and the dual-machine noise normalized characteristic table, respectively, to obtain the target first motor output torque and the target second motor output torque when the noise and efficiency match.

8. A control device for automobile vibration noise, characterized in that: The device comprises: An acquisition module, used to acquire a dual-machine noise characteristic table and a dual-machine efficiency characteristic table; A processing module, configured to determine a target first motor output torque and a target second motor output torque based on the dual-machine efficiency characteristic table and the dual-machine noise characteristic table; A control module is configured to control the first motor and the second motor based on the target first motor output torque and the target second motor output torque.

9. A vehicle vibration noise control device, characterized in that: The device comprises: a memory, a processor, and a vehicle vibration noise control program stored in the memory and executable on the processor, wherein the vehicle vibration noise control program is configured to implement the steps of the vehicle vibration noise control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a control program for automobile vibration noise, and when the control program for automobile vibration noise is executed by a processor, the steps of the method for controlling automobile vibration noise according to any one of claims 1 to 7 are implemented.

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