CN114329821A - Method, device and equipment for optimizing compressor noise in NVH (noise, vibration and harshness) and storage medium - Google Patents

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a method, a device, equipment and a storage medium for optimizing noise of a compressor in NVH (noise, vibration and harshness) based on a new energy vehicle. The method comprises the following steps: step one, calculating a target rotating speed of a compressor; step two, determining the actual rotating speed of the compressor after comparing the target rotating speed of the compressor with the limiting rotating speed of the compressor; step three, comparing the actual rotating speed of the compressor with the avoiding rotating speed of the compressor and then determining the actual corrected rotating speed of the compressor; and step four, outputting a rotating speed control instruction, and executing the control instruction by the compressor. According to the invention, the highest limit rotating speed of the compressor under different vehicle speeds and air blower gear working conditions is set through a table look-up method, so that a user cannot obviously sense the working noise and vibration of the compressor in a normal vehicle using stage, the rotating speed of the whole vehicle, which is caused by the working of the compressor, is found out, and the rotating speed is avoided, thereby achieving the purpose of optimizing NVH of the whole vehicle.

Description

A method, device, equipment and storage medium for optimizing compressor noise in NVH

technical field

The invention belongs to the technical field of automobiles, in particular to a method, device, equipment and storage medium for optimizing noise of compressors in NVH based on new energy vehicles.

Background technique

With the mass popularization of new energy vehicles, the control of NVH in the vehicle cabin has shifted from engine noise to noise of electric drive components such as compressors and motors. The mechanical noise when the compressor is working is one of the main noise sources in the engine room of the whole vehicle. How to reduce the working noise of the compressor is a problem to be solved.

SUMMARY OF THE INVENTION

The invention provides an optimization method, device, equipment and storage medium for compressor noise in NVH based on new energy vehicles. The optimization method uses a table look-up method to set the maximum limit of the compressor under different vehicle speeds and blower gear conditions. Speed, so that the user can not clearly perceive the noise and vibration of the compressor in the normal vehicle use stage, and find out the speed of the compressor that causes the vibration of the whole vehicle, and avoid this part of the speed, so as to achieve the purpose of optimizing the NVH of the whole vehicle.

The technical scheme of the present invention is described as follows in conjunction with the accompanying drawings:

In a first aspect, an embodiment of the present invention provides a method for optimizing compressor noise in NVH, comprising the following steps:

Step 1. Calculate the target speed of the compressor;

Step 2, after comparing the target speed of the compressor with the limit speed of the compressor, determine the actual speed of the compressor;

Step 3: After comparing the actual speed of the compressor with the avoidance speed of the compressor, the actual corrected speed of the compressor is determined;

Step 4: Output the rotational speed control command, and the compressor executes the control command.

Further, the concrete method of described step 1 is as follows:

The air conditioning control system calculates the compressor target speed r _target according to the current cooling demand;

Further, the concrete method of described step 2 is as follows:

Comparing the compressor target speed r _target with the compressor limit speed r _limit , when r _target < r _limit , the compressor actual speed r _actually runs according to the compressor target speed r _target ; when r _target ≥ r _limit , the compressor The actual speed r _actually runs according to the compressor limit speed r _limit ;

Among them, the limited speed r _limit of the compressor is obtained by looking up Table 1.

Table 1

Further, the concrete method of described step 3 is as follows:

Compare the _actual speed r of the compressor with the median value r _of the compressor avoidance speed. When r is less than r, the _actual corrected speed r _of the compressor is _revised as the lower limit of the avoidance interval; when r _is greater than or equal _to r, r is _revised . is the upper limit of the avoidance interval;

The lower limit value of the avoidance interval and the upper limit value of the avoidance interval are obtained by looking up Table 1.

In a second aspect, an embodiment of the present invention also provides a device for optimizing compressor noise in NVH, which is used to implement a method for optimizing compressor noise in NVH, including:

The compressor target rotational speed calculation module is used to calculate the compressor target rotational speed r _target ;

The actual speed calculation module of the compressor is used to calculate the _actual speed r of the compressor;

The calculation module of the actual corrected rotational speed of the compressor is used to calculate the actual corrected rotational speed r of the _compressor ;

The compressor speed execution module is used to execute the control command.

In a third aspect, an embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and running on the processor, the processor implementing the program as described in the present invention when the processor executes the program A method for optimizing compressor noise in NVH as described in any one of the embodiments.

In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, one of the methods described in any one of the embodiments of the present invention is implemented. An optimization method for compressor noise in NVH.

The beneficial effects of the present invention are:

The invention uses a table look-up method to set the maximum limited rotational speed of the compressor under different vehicle speeds and blower gear operating conditions, so that the user cannot clearly perceive the working noise and vibration of the compressor during the normal vehicle use stage, and finds out the compressor's working noise and vibration. The speed of the vibration of the whole vehicle, to avoid this part of the speed, so as to achieve the purpose of NVH of the whole vehicle.

Description of drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the drawings to be used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the contents of the embodiments of the present invention and these drawings without any creative effort.

1 is a schematic flowchart of a method for optimizing compressor noise in an NVH according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a device for optimizing compressor noise in an NVH according to Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of an electronic device in Embodiment 3 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

1 is a flowchart of a method for optimizing compressor noise in NVH provided in Embodiment 1 of the present invention. The method can be executed by a device for optimizing compressor noise in NVH in Embodiment 2 of the present invention. The device can use software And/or hardware implementation, as shown in Figure 1, the method specifically includes the following steps:

In a first aspect, an embodiment of the present invention provides a method for optimizing compressor noise in NVH, comprising the following steps:

Step 1. Calculate the target speed of the compressor;

The specific method is as follows:

The air conditioning control system calculates the compressor target speed r _target according to the current cooling demand;

Step 2, after comparing the target speed of the compressor with the limit speed of the compressor, determine the actual speed of the compressor;

details as follows:

Comparing the compressor target speed r _target with the compressor limit speed r _limit , when r _target < r _limit , the compressor actual speed r _actually runs according to the compressor target speed r _target ; when r _target ≥ r _limit , the compressor The actual speed r _actually runs according to the compressor limit speed r _limit ;

Among them, the limited speed r _limit of the compressor is obtained by looking up Table 1.

Table 1

Step 3: After comparing the actual speed of the compressor with the avoidance speed of the compressor, the actual corrected speed of the compressor is determined;

details as follows:

Compare the _actual speed r of the compressor with the median value r _of the compressor avoidance speed. When r is less than r, the _actual corrected speed r _of the compressor is _revised as the lower limit of the avoidance interval; when r _is greater than or equal _to r, r is _revised . is the upper limit of the avoidance interval;

The lower limit value of the avoidance interval and the upper limit value of the avoidance interval are obtained by looking up Table 1.

Step 4: Output the rotational speed control command, that is, the compressor's actual corrected rotational speed r _repair , and the compressor executes the control command.

Embodiment 2

FIG. 2 is a schematic structural diagram of a device for optimizing noise of a compressor in an NVH according to Embodiment 2 of the present invention. The device can be implemented in software and/or hardware, and the device can be integrated into any device that provides the function of an optimization method for compressor noise in NVH. Optimization devices, including:

The compressor target rotational speed calculation module is used to calculate the compressor target rotational speed r _target ;

The actual speed calculation module of the compressor is used to calculate the _actual speed r of the compressor;

The calculation module of the actual corrected rotational speed of the compressor is used to calculate the actual corrected rotational speed r of the _compressor ;

The compressor speed execution module is used to execute the control command.

The above product can execute the method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

Embodiment 3

FIG. 3 is a schematic structural diagram of a computer device in Embodiment 3 of the present invention. Figure 3 shows a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention. The computer device 12 shown in FIG. 3 is only an example, and should not impose any limitation on the function and scope of use of the embodiments of the present invention.

As shown in FIG. 3, computer device 12 takes the form of a general-purpose computing device. Components of computer device 12 may include, but are not limited to, one or more processors or processing units 16 , system memory 28 , and a bus 18 connecting various system components including system memory 28 and processing unit 16 .

Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of a variety of bus structures. By way of example, these architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect ( PCI) bus.

Computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer device 12, including both volatile and nonvolatile media, removable and non-removable media.

System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and/or cache memory 32 . Computer device 12 may further include other removable/non-removable, volatile/non-volatile computer system storage media. For example only, storage system 34 may be used to read and write to non-removable, non-volatile magnetic media (not shown in FIG. 3, commonly referred to as a "hard disk drive"). Although not shown in Figure 3, a disk drive may be provided for reading and writing to removable non-volatile magnetic disks (eg "floppy disks"), as well as removable non-volatile optical disks (eg CD-ROM, DVD-ROM) or other optical media) to read and write optical drives. In these cases, each drive may be connected to bus 18 through one or more data media interfaces. Memory 28 may include at least one program product having a set (eg, at least one) of program modules configured to perform the functions of various embodiments of the present invention.

A program/utility 40 having a set (at least one) of program modules 42, which may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other programs Modules and program data, each or some combination of these examples may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the described embodiments of the present invention.

Computer device 12 may also communicate with one or more external devices 14 (eg, keyboard, pointing device, display 24, etc.), may also communicate with one or more devices that enable a user to interact with computer device 12, and/or communicate with Any device (eg, network card, modem, etc.) that enables the computer device 12 to communicate with one or more other computing devices. Such communication may take place through input/output (I/O) interface 22 . In addition, in the computer device 12 in this embodiment, the display 24 does not exist as an independent entity, but is embedded in the mirror surface. When the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. Also, the computer device 12 may communicate with one or more networks (eg, a local area network (LAN), a wide area network (WAN), and/or a public network such as the Internet) through a network adapter 20 . As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18 . It should be understood that, although not shown, other hardware and/or software modules may be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives and data backup storage systems.

The processing unit 16 executes various functional applications and data processing by running the programs stored in the system memory 28 , for example, implementing a method for optimizing compressor noise in NVH provided by the embodiment of the present invention.

Embodiment 4

Embodiment 4 of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements a method for optimizing compressor noise in NVH as provided by all the inventive embodiments of the present application.

Any combination of one or more computer-readable media may be employed. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples (a non-exhaustive list) of computer readable storage media include: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), Erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

A computer-readable signal medium may include a propagated data signal in baseband or as part of a carrier wave, with computer-readable program code embodied thereon. Such propagated data signals may take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device .

Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations of the present invention may be written in one or more programming languages, including object-oriented programming languages—such as Java, Smalltalk, C++, but also conventional Procedural programming language - such as the "C" language or similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider through Internet connection).

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (7)

1. an optimization method of compressor noise in NVH, is characterized in that, comprises the following steps: Step 1. Calculate the target speed of the compressor; Step 2, after comparing the target speed of the compressor with the limit speed of the compressor, determine the actual speed of the compressor; Step 3: After comparing the actual speed of the compressor with the avoidance speed of the compressor, the actual corrected speed of the compressor is determined; Step 4: Output the rotational speed control command, and the compressor executes the control command. 2. the optimization method of compressor noise in a kind of NVH according to claim 1, is characterized in that, the concrete method of described step 1 is as follows: The air conditioning control system calculates the compressor _target speed rtarget according to the current cooling demand. 3. the optimization method of compressor noise in a kind of NVH according to claim 1, is characterized in that, the concrete method of described step 2 is as follows: Comparing the compressor target speed r _target with the compressor limit speed r _limit , when r _target < r _limit , the compressor actual speed r _actually runs according to the compressor target speed r _target ; when r _target ≥ r _limit , the compressor The actual speed r _actually runs according to the compressor limit speed r _limit ; Among them, the limited speed r _limit of the compressor is obtained by looking up Table 1. Table 1

4. the optimization method of compressor noise in a kind of NVH according to claim 1, is characterized in that, the concrete method of described step 3 is as follows: Compare the _actual speed r of the compressor with the median value r _of the compressor avoidance speed. When r is less than r, the _actual corrected speed r _of the compressor is _revised as the lower limit of the avoidance interval; when r _is greater than or equal _to r, r is _revised . is the upper limit of the avoidance interval; The lower limit value of the avoidance interval and the upper limit value of the avoidance interval are obtained by looking up Table 1. 5. an optimization device of compressor noise in NVH, for realizing a kind of optimization method of compressor noise in NVH, it is characterized in that, comprising: The compressor target rotational speed calculation module is used to calculate the compressor target rotational speed r _target ; The actual speed calculation module of the compressor is used to calculate the _actual speed r of the compressor; The calculation module of the actual corrected rotational speed of the compressor is used to calculate the actual corrected rotational speed r of the _compressor ; The compressor speed execution module is used to execute the control command. 6. A computer equipment comprising a memory, a processor and a computer program that is stored on the memory and can be run on the processor, characterized in that, when the processor executes the program, any one of claims 1-4 is realized. 1. An optimization method for compressor noise in NVH. 7. A computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, optimization of compressor noise in a kind of NVH as described in any one of claims 1-4 is realized method.

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