Elastic coupling parameter determination method, elastic coupling optimization method, and electronic device

Abstract

The application discloses an elastic coupling parameter determination method, an elastic coupling optimization method and electronic equipment. The elastic coupling parameter determination method comprises the following steps: obtaining a target attenuation amount of an elastic coupling applied to a steering column of a vehicle to be tested; obtaining an attenuation amount and static stiffness relationship; and determining a static stiffness corresponding to the target attenuation amount as a target static stiffness of the elastic coupling according to the attenuation amount and static stiffness relationship. The application can efficiently and accurately match the elastic coupling of the steering column, avoid multiple part replacement tests, improve efficiency and save sample part resources. The elastic coupling target static stiffness obtained by the elastic coupling parameter determination method of the application can meet the target attenuation amount, reduce the gear meshing noise of the steering machine itself and the energy transmitted to the steering wheel via the column under the excitation of the road surface, improve the steering wheel vibration and noise, and improve the driving comfort.

Description

Technical Field

[0001] This invention relates to the field of vehicle-related technologies, and in particular to a method for determining the parameters of a flexible coupling, a method for optimizing a flexible coupling, electronic equipment, storage media, and computer program products. Background Technology

[0002] The vehicle's steering system transmits the rotation of the steering wheel to the steering gear to control the vehicle's direction. The steering system includes the steering gear, steering column, and steering wheel. Gear meshing noise from the steering gear itself and road surface excitation are transmitted to the steering wheel via the steering column, causing steering wheel vibration and noise.

[0003] Currently, some vehicle models use flexible couplings in the steering column. Their main function is to reduce the energy transmitted to the vehicle interior through the steering column structure to reduce the gear meshing noise of the steering gear itself, thereby improving steering wheel vibration and noise.

[0004] However, existing technologies rely solely on experience to conduct multiple component replacement tests to select flexible couplings. They lack relevant matching methods to optimize the vibration energy transmitted by the flexible couplings, resulting in low efficiency, a large demand for samples, and a waste of resources. Furthermore, they cannot quantify and provide the optimal solution. Summary of the Invention

[0005] Therefore, it is necessary to address the technical problem of low efficiency caused by the existing technology of determining the parameters of flexible couplings solely based on experience, and to provide a method for determining the parameters of flexible couplings, a method for optimizing flexible couplings, electronic equipment, storage media, and computer program products.

[0006] This invention provides a method for determining the parameters of an elastic coupling, comprising:

[0007] Obtain the target attenuation of the flexible coupling applied to the steering column of the vehicle under test.

[0008] Obtain the relationship between attenuation and static stiffness, and determine the static stiffness corresponding to the target attenuation as the target static stiffness of the elastic coupling based on the relationship between attenuation and static stiffness.

[0009] Furthermore, obtaining the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test includes:

[0010] Obtain the first vibration acceleration amplitude of the steering column of the vehicle under test without the flexible coupling installed at a first position within a given frequency range, where the first position is located below the installation position of the flexible coupling;

[0011] Obtain the second vibration acceleration amplitude of the steering column of the benchmark vehicle at a given frequency range at a second position, which is located above the installation position of the flexible coupling;

[0012] The target attenuation is calculated based on the first vibration acceleration amplitude and the second vibration acceleration amplitude.

[0013] Furthermore, obtaining the relationship between attenuation and static stiffness includes:

[0014] After the steering column of the vehicle under test was equipped with flexible coupling samples of different static stiffness, multiple test vibration acceleration amplitudes were obtained at a second position above the flexible coupling sample, within a given frequency range.

[0015] Based on the first vibration acceleration amplitude and the multiple test vibration acceleration amplitudes, multiple test attenuation values ​​are calculated respectively, and each test attenuation value is associated with the static stiffness of the elastic coupling sample used for testing.

[0016] Based on the multiple test attenuation values ​​and corresponding static stiffness, the relationship between attenuation value and static stiffness is determined.

[0017] Furthermore, determining the relationship between attenuation and static stiffness based on multiple test attenuation values ​​and corresponding static stiffness includes:

[0018] Based on the multiple test attenuation values ​​and corresponding static stiffness, the ratio of attenuation value to static stiffness is obtained as: R / K, where R is the attenuation value and K is the static stiffness.

[0019] Further, determining the static stiffness corresponding to the target attenuation amount as the target static stiffness of the elastic coupling includes:

[0020] The target static stiffness of the flexible coupling is obtained by dividing the target attenuation by the ratio of attenuation to static stiffness.

[0021] Furthermore, the target attenuation includes target attenuation in multiple directions, and the ratio of attenuation to static stiffness includes the ratio of attenuation to static stiffness in multiple directions.

[0022] The step of dividing the target attenuation by the ratio of attenuation to static stiffness to obtain the target static stiffness of the elastic coupling includes:

[0023] The target attenuation in each direction is divided by the ratio of the attenuation to the static stiffness in the corresponding direction to obtain the target static stiffness of the elastic coupling in each direction.

[0024] This invention provides a method for optimizing flexible couplings, comprising:

[0025] Vibration and noise tests were conducted on the steering column of the vehicle under test without a flexible coupling to determine the problem frequency range as the given frequency range;

[0026] The target static stiffness of the flexible coupling is obtained by performing the parameter determination method of the flexible coupling as described above.

[0027] Produce flexible couplings that meet the target static stiffness of flexible couplings as median flexible couplings;

[0028] Install the median flexible coupling onto the vehicle under test and conduct vibration and noise tests again to determine if it meets the vibration and noise requirements. If it does, output the parameters of the median flexible coupling; otherwise, modify the structure of the median flexible coupling and test again until it meets the vibration and noise requirements.

[0029] This invention provides an electronic device, comprising:

[0030] At least one processor; and,

[0031] A memory communicatively connected to at least one of the processors; wherein,

[0032] The memory stores instructions that can be executed by at least one of the processors to enable at least one of the processors to perform the flexible coupling parameter determination method as described above.

[0033] The present invention provides a storage medium that stores computer instructions, which, when executed by a computer, are used to perform all the steps of the flexible coupling parameter determination method as described above.

[0034] This invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the flexible coupling parameter determination method as described above.

[0035] This invention obtains the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test, and determines the static stiffness corresponding to the target attenuation amount as the target static stiffness of the flexible coupling based on the relationship between the attenuation amount and static stiffness. This invention enables efficient and accurate matching of the flexible coupling to the steering column, avoiding multiple component replacement tests, improving efficiency and saving sample resources. Flexible couplings manufactured using the target static stiffness obtained from the flexible coupling parameter determination method of this invention can meet the target attenuation amount, reduce gear meshing noise in the steering gear itself and the energy transmitted from the road surface excitation to the steering wheel via the column, improve steering wheel vibration and noise, and enhance driving comfort. Attached Figure Description

[0036] Figure 1 This is a flowchart illustrating the process of determining the parameters of an elastic coupling according to an embodiment of the present invention.

[0037] Figure 2This is a flowchart illustrating a method for determining the parameters of an elastic coupling according to another embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the steering system structure;

[0039] Figure 4 A schematic diagram showing the installation position of the flexible coupling on the steering column;

[0040] Figure 5 This is a flowchart illustrating the workflow of an optimization method for a flexible coupling according to an embodiment of the present invention.

[0041] Figure 6 This is a schematic diagram of the hardware structure of an electronic device according to the present invention. Detailed Implementation

[0042] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0043] like Figure 1 The diagram shown is a flowchart of a method for determining the parameters of an elastic coupling according to an embodiment of the present invention, including:

[0044] Step S101: Obtain the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test.

[0045] Step S102: Obtain the relationship between attenuation and static stiffness. Based on the relationship between attenuation and static stiffness, determine the static stiffness corresponding to the target attenuation as the target static stiffness of the elastic coupling.

[0046] Specifically, the present invention can be applied to electronic devices with processing capabilities, such as computers.

[0047] First, execute step S101 to obtain the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test.

[0048] Specifically, the target attenuation is the expected attenuation of the vibration amplitude of the steering column of the vehicle under test after the application of the flexible coupling.

[0049] Then, step S102 is executed to obtain the relationship between attenuation and static stiffness. Based on the relationship between attenuation and static stiffness, the static stiffness corresponding to the target attenuation is determined as the target static stiffness of the elastic coupling.

[0050] Specifically, the relationship between attenuation and static stiffness can be determined through multiple experiments using an elastic coupling with known static stiffness.

[0051] In some embodiments, the relationship between attenuation and static stiffness is the ratio of attenuation to static stiffness.

[0052] After obtaining the relationship between attenuation and static stiffness, the corresponding static stiffness is calculated directly based on the relationship between attenuation and static stiffness according to the target attenuation, and is taken as the target static stiffness of the elastic coupling.

[0053] Then, based on the obtained target static stiffness of the flexible coupling, a flexible coupling that meets the target static stiffness requirement can be manufactured. The flexible coupling is then installed on the steering column of the vehicle under test to improve steering wheel vibration and noise, thereby enhancing driving comfort.

[0054] This invention obtains the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test, and determines the static stiffness corresponding to the target attenuation amount as the target static stiffness of the flexible coupling based on the relationship between the attenuation amount and static stiffness. This invention enables efficient and accurate matching of the flexible coupling to the steering column, avoiding multiple component replacement tests, improving efficiency and saving sample resources. Flexible couplings manufactured using the target static stiffness obtained from the flexible coupling parameter determination method of this invention can meet the target attenuation amount, reduce gear meshing noise in the steering gear itself and the energy transmitted from the road surface excitation to the steering wheel via the column, improve steering wheel vibration and noise, and enhance driving comfort.

[0055] like Figure 2 The diagram shown is a flowchart of a method for determining the parameters of a flexible coupling according to another embodiment of the present invention, including:

[0056] Step S201: Obtain the first vibration acceleration amplitude of the steering column of the vehicle under test without the flexible coupling installed at a first position within a given frequency range, wherein the first position is located below the installation position of the flexible coupling;

[0057] Step S202: Obtain the second vibration acceleration amplitude of the steering column of the benchmark vehicle at a given frequency range at the second position, where the second position is located above the installation position of the flexible coupling;

[0058] Step S203: Calculate the target attenuation amount based on the first vibration acceleration amplitude and the second vibration acceleration amplitude;

[0059] Step S204: After installing elastic coupling samples with different static stiffness, the test vibration acceleration amplitude values ​​of the steering column of the vehicle under test are obtained multiple times at a second position above the elastic coupling sample, within a given frequency range.

[0060] Step S205: Based on the first vibration acceleration amplitude and the multiple test vibration acceleration amplitudes, calculate multiple test attenuation values ​​respectively, and associate each test attenuation value with the static stiffness of the elastic coupling sample used for testing.

[0061] Step S206: Based on the multiple test attenuation values ​​and corresponding static stiffness, determine the relationship between attenuation value and static stiffness;

[0062] Step S207: Divide the target attenuation by the ratio of attenuation to static stiffness to obtain the target static stiffness of the elastic coupling.

[0063] Specifically, step S201 is executed first to obtain the first vibration acceleration amplitude of the steering column of the vehicle under test without the flexible coupling installed at a first position in a given frequency range. The first position is located below the installation position of the flexible coupling.

[0064] Specifically, such as Figure 3 The diagram shows the structure of a steering system, which includes: a steering gear 1, a steering column 2, and a steering wheel 3. The steering column 2 connects to both the steering gear 1 and the steering wheel 3. Figure 4 The diagram shows the installation position of the flexible coupling on the steering column. The installation position 5 of the flexible coupling is located in the middle of the steering column 2, and the first position is located below the installation position 5 of the flexible coupling. The first position is preferably the vibration measuring point 4 of the column body.

[0065] Vibration tests are performed on the steering column of the vehicle under test's steering system without a flexible coupling. The first vibration acceleration amplitude within a given frequency range at the first position is recorded. Vibration acceleration includes multiple directions, such as three-dimensional directions (X, Y, and Z). Therefore, the obtained first vibration acceleration amplitude also includes three directions, recorded as VX1, VY1, and VZ1 respectively. The given frequency range is the frequency range where vibration and noise problems occur in the vehicle under test. Vibration and noise tests can be performed on the steering column of the vehicle under test's steering system without a flexible coupling, and the frequency range where noise problems occur can be used as the problem frequency range, i.e., the given frequency range. Simultaneously, the first vibration acceleration amplitude within the given frequency range is recorded.

[0066] Then, step S202 is executed to obtain the second vibration acceleration amplitude of the steering column of the benchmark vehicle at a given frequency range at the second position, which is located above the installation position of the flexible coupling.

[0067] Specifically, such as Figure 4 As shown, the second position is located above the installation position 5 of the flexible coupling. The second position is preferably the vibration measuring point at the 12 o'clock position of the steering wheel.

[0068] The steering column of the benchmark vehicle can be equipped with a flexible coupling or not.

[0069] Vibration tests were conducted on the steering column of the benchmark vehicle's steering system, and the second vibration acceleration amplitude was recorded at a given frequency range in the second position. The vibration acceleration includes multiple directions, such as three dimensions (X, Y, and Z). Therefore, the obtained second vibration acceleration amplitude also includes three directions, recorded as VX0, VY0, and VZ0, respectively.

[0070] Then, step S203 is executed to calculate the target attenuation amount based on the first vibration acceleration amplitude and the second vibration acceleration amplitude.

[0071] Specifically, the target attenuation is calculated as the first vibration acceleration amplitude minus the second vibration acceleration amplitude. Vibration acceleration includes multiple directions, such as three dimensions (X, Y, and Z). Therefore, the target attenuation also includes three directions: RX0, RY0, and RZ0.

[0072] RX0 = VX1 - VX0;

[0073] RY0 = VY1 - VY0;

[0074] RZ0 = VZ1 - VZ0.

[0075] Then, the relationship between attenuation and static stiffness is determined through steps S204 to S206.

[0076] First, step S204 is executed, and multiple test vibration acceleration amplitude values ​​are obtained at a given frequency range at a second position above the elastic coupling sample after the steering column of the vehicle under test is installed with elastic coupling samples of different static stiffness.

[0077] Specifically, multiple flexible coupling samples with known static stiffness are first obtained. Then, one flexible coupling sample is installed at a time at the flexible coupling mounting position on the steering column of the vehicle under test, and a vibration test is performed at a given frequency range. The vibration acceleration amplitude at the given frequency range is obtained at a second position and used as the test vibration acceleration amplitude corresponding to the flexible coupling sample used in each test. Only one flexible coupling sample is used in each test, and a different flexible coupling sample is used in the next test.

[0078] Then, step S205 is executed, in which multiple test attenuation values ​​are calculated based on the first vibration acceleration amplitude and the multiple test vibration acceleration amplitudes, and each test attenuation value is associated with the static stiffness of the elastic coupling sample used for testing.

[0079] Specifically, the amplitude of the first vibration acceleration is subtracted from the amplitude of each test vibration acceleration to obtain multiple attenuation values ​​as test attenuation values. Each test attenuation value is correlated with the static stiffness of the elastic coupling sample corresponding to the test vibration acceleration amplitude used for calculation.

[0080] Then, step S206 is executed to determine the relationship between the attenuation amount and the static stiffness based on the multiple test attenuation amounts and the corresponding static stiffness.

[0081] In one embodiment, determining the relationship between attenuation and static stiffness based on multiple test attenuation values ​​and corresponding static stiffness includes:

[0082] Based on the multiple test attenuation values ​​and corresponding static stiffness, the ratio of attenuation value to static stiffness is obtained as: R / K, where R is the attenuation value and K is the static stiffness.

[0083] In some embodiments, the multiple test attenuation values ​​and their corresponding static stiffness are fitted and calculated to obtain the ratio of attenuation value to static stiffness as R / K, where R is the attenuation value and K is the static stiffness.

[0084] In other embodiments, the ratio of test attenuation to static stiffness is calculated for each test attenuation and the corresponding static stiffness, and then the ratio of the smallest test attenuation to static stiffness is selected as the final ratio of attenuation to static stiffness.

[0085] The attenuation amount includes multiple directions, therefore the tested attenuation amount also includes multiple directions. Consequently, the ratio of attenuation amount to static stiffness also includes multiple directions, and similarly, static stiffness also includes multiple directions. Therefore, the ratio of attenuation amount to static stiffness in each direction is calculated using the tested attenuation amount and the corresponding static stiffness in each direction. For example, for the case of three directions, namely X, Y, and Z, the ratios of attenuation amount to static stiffness in the three directions are calculated as RKX, RKY, and RKZ, respectively.

[0086] Then, step S207 is executed, dividing the target attenuation by the ratio of attenuation to static stiffness to obtain the target static stiffness of the elastic coupling.

[0087] In one embodiment, the target attenuation includes target attenuation in multiple directions, and the ratio of attenuation to static stiffness includes the ratio of attenuation to static stiffness in multiple directions.

[0088] The step of dividing the target attenuation by the ratio of attenuation to static stiffness to obtain the target static stiffness of the elastic coupling includes:

[0089] The target attenuation in each direction is divided by the ratio of the attenuation to the static stiffness in the corresponding direction to obtain the target static stiffness of the elastic coupling in each direction.

[0090] Specifically, the target attenuation includes multiple directions, such as three directions: X, Y, and Z. Therefore, the target attenuation also includes three directions: RX0, RY0, and RZ0. Similarly, the ratio of attenuation to static stiffness also includes multiple directions. For example, for the case of three directions, namely X, Y, and Z, the ratio of attenuation to static stiffness in the three directions is RKX, RKY, and RKZ.

[0091] Therefore, for the three directions, namely X, Y, and Z, the target static stiffness of the elastic coupling in each of the three directions is calculated as follows:

[0092] KX0 = RX0 ÷ RKX;

[0093] KY0 = RY0 ÷ RKY;

[0094] KZ0 = RZ0 ÷ RKZ;

[0095] Wherein, KX0 is the target static stiffness of the elastic coupling in the X direction, KY0 is the target static stiffness of the elastic coupling in the Y direction, KZ0 is the target static stiffness of the elastic coupling in the Z direction, RX0 is the target attenuation in the X direction, RY0 is the target attenuation in the Y direction, RZ0 is the target attenuation in the Z direction, RKX is the ratio of attenuation to static stiffness in the X direction, RKY is the ratio of attenuation to static stiffness in the Y direction, and RKZ is the ratio of attenuation to static stiffness in the Z direction.

[0096] This invention determines the target attenuation amount by comparing a benchmark vehicle with the vehicle under test. Using a sample of elastic couplings with known static stiffness, it determines the relationship between the attenuation amount and the static stiffness, and calculates the static stiffness corresponding to the target attenuation amount. This avoids multiple component replacement tests, improves efficiency, and saves sample resources.

[0097] The flowchart of the method for determining the parameters of an elastic coupling according to a preferred embodiment of the present invention is as follows:

[0098]

[0099]

[0100] like Figure 5 The diagram shown is a flowchart of an optimization method for a flexible coupling according to an embodiment of the present invention, including:

[0101] Step S501: Vibration and noise tests are performed on the steering column of the vehicle under test without a flexible coupling to determine the problem frequency range as the given frequency range;

[0102] Step S502: Perform the elastic coupling parameter determination method as described above to obtain the target static stiffness of the elastic coupling;

[0103] Step S503: Produce an elastic coupling that meets the target static stiffness of the elastic coupling as a median elastic coupling.

[0104] Step S504: Install the median flexible coupling onto the vehicle under test, and conduct vibration and noise tests again to determine whether it meets the vibration and noise requirements. If it does, output the parameters of the median flexible coupling; otherwise, modify the structure of the median flexible coupling and test again until it meets the vibration and noise requirements.

[0105] Specifically, steering gear meshing noise is a high-frequency noise above 400Hz. Current methods using flexible couplings to address this noise primarily target the high frequencies, neglecting to control the low-frequency characteristics of the couplings. However, the steering system also has low-frequency issues, which constitute the main frequency band of steering system vibration and pose a risk of inducing or exacerbating low-frequency vibrations in the steering wheel.

[0106] Therefore, this embodiment constructs a closed-loop decomposition and verification structure of "real vehicle—system—component—real vehicle," defining four dimensions: test indicators, operating conditions, frequency range, and focus areas. It realizes a method for deducing component targets based on real vehicle and system test data, and then applies the component to the whole vehicle for verification. This results in a set of matching schemes for automotive steering column flexible couplings, evaluating and optimizing the structure and stiffness of the flexible couplings, ultimately providing a stiffness definition for the flexible couplings, realizing functional expansion of the flexible couplings, and simultaneously addressing high-frequency noise and low-frequency vibration.

[0107] First, step S501 is executed to perform vibration and noise tests on the steering column of the vehicle under test that does not have a flexible coupling installed, and the problem frequency range is determined as the given frequency range.

[0108] Specifically, the problem is confirmed on the actual vehicle, and the frequency and amplitude of the problem are identified. Vibration and noise tests are conducted on the steering column of the vehicle under test without a flexible coupling at multiple frequency ranges. The frequency range that does not meet the vibration and noise test requirements is identified as the problem frequency range, and this problem frequency range is used as the given frequency range. The given frequency range does not distinguish between high and low frequencies.

[0109] The external environment for the test was normal temperature and pressure; the technical conditions and parameters are shown in Table 1.

[0110]

[0111] Hardware equipment:

[0112] No special requirements; standard vibration and noise acquisition equipment and sensors are sufficient.

[0113] The vehicle under test is not equipped with a flexible coupling. Vibration and noise tests are carried out according to the requirements in Table 1. The collected data are analyzed to identify the frequency and amplitude of the problematic vibrations and noises and to determine the boundaries of the actual vehicle.

[0114] Then execute S502, and execute the elastic coupling parameter determination method as described above to obtain the target static stiffness of the elastic coupling.

[0115] Specifically, the actual vehicle achieves the target confirmation, and the benchmark vehicle is tested to determine the vibration amplitude and noise amplitude in a given frequency range.

[0116] The process involved acquiring basic parameters of the actual vehicle and system, conducting vehicle-level and system-level tests on samples with known static stiffness, and determining the relationship between the attenuation of the flexible coupling and its static stiffness. Multiple flexible coupling samples with known axial and radial (horizontal and vertical) static stiffness were provided by the supplier. Multiple samples were installed on the actual vehicle under test, and tests were conducted according to the requirements in Table 1. The data were then analyzed to derive the corresponding relationship between the attenuation of the flexible coupling and its static stiffness.

[0117] The derivation of the target parameters for the parts is based on the first vibration acceleration amplitude of the vehicle under test and the second vibration acceleration amplitude of the comparison vehicle to determine the target attenuation amount. According to the linear characteristics of the mechanical system, based on the relationship between the obtained attenuation amount and static stiffness, the static stiffness values ​​corresponding to the target attenuation amount are derived, that is, the target median static stiffness output by the flexible coupling, and then output to the supplier.

[0118] Then, step S503 is executed to produce an elastic coupling that meets the target static stiffness of the elastic coupling as a median elastic coupling.

[0119] Specifically, the supplier makes the relevant parts and produces flexible couplings that meet the target static stiffness of the flexible couplings as median flexible couplings.

[0120] Finally, step S504 is executed to install the median flexible coupling onto the vehicle under test and perform vibration and noise tests again to determine whether it meets the vibration and noise requirements. If it does, the parameters of the median flexible coupling are output; otherwise, the structure of the median flexible coupling is modified and the test is repeated until it meets the vibration and noise requirements.

[0121] Specifically, real-vehicle verification, effect judgment, and stiffness deviation sample testing were conducted. Vibration and noise tests were carried out according to the requirements in Table 1, and the collected data were analyzed to identify the frequency and amplitude of problematic vibrations and noises. Then, the results were compared with the target to determine whether the steering wheel vibration and high-frequency noise met the target requirements.

[0122] (1) If it does not meet the requirements, modify the structure of the flexible coupling and repeat the actual vehicle verification.

[0123] (2) If the conditions are met, the target parameters for each component will be output, and the component with a stiffness deviation of ±10% based on the median will be verified. The allowable stiffness deviation range will be given to ensure the stable performance of the flexible coupling.

[0124] This embodiment avoids multiple component replacement tests, improving efficiency and saving sample resources. Furthermore, it maximizes the functionality of the flexible coupling while simultaneously addressing high-frequency noise and low-frequency vibration, achieving optimal results.

[0125] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0126] like Figure 6 The diagram shown is a hardware structure schematic of an electronic device according to the present invention, comprising:

[0127] At least one processor 601; and,

[0128] A memory 602 is communicatively connected to at least one of the processors 601; wherein,

[0129] The memory 602 stores instructions that can be executed by at least one of the processors to enable the at least one of the processors to perform the flexible coupling parameter determination method as described above.

[0130] Figure 6 Take the 601 processor as an example.

[0131] The electronic device may also include an input device 603 and a display device 604.

[0132] The processor 601, memory 602, input device 603 and display device 604 can be connected by a bus or other means. The figure shows an example of connection by a bus.

[0133] The memory 602, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the flexible coupling parameter determination method in the embodiments of this application, for example, Figure 1 , Figure 2 The method flow is shown. The processor 601 executes various functional applications and data processing by running non-volatile software programs, instructions, and modules stored in the memory 602, thereby realizing the flexible coupling parameter determination method in the above embodiment.

[0134] The memory 602 may include a program storage area and a data storage area. The program storage area may store an operating system and an application program required for at least one function. The data storage area may store data created based on the use of the flexible coupling parameter determination method. Furthermore, the memory 602 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 602 may optionally include memory remotely located relative to the processor 601, and these remote memories may be connected via a network to the apparatus performing the flexible coupling parameter determination method. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0135] The input device 603 can receive user clicks and generate signal inputs related to user settings and function control for determining the parameters of the flexible coupling. The display device 604 may include a display screen or other display equipment.

[0136] When one or more modules are stored in the memory 602, and are run by one or more processors 601, the flexible coupling parameter determination method in any of the above method embodiments is executed.

[0137] This invention obtains the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test, and determines the static stiffness corresponding to the target attenuation amount as the target static stiffness of the flexible coupling based on the relationship between the attenuation amount and static stiffness. This invention enables efficient and accurate matching of the flexible coupling to the steering column, avoiding multiple component replacement tests, improving efficiency and saving sample resources. Flexible couplings manufactured using the target static stiffness obtained from the flexible coupling parameter determination method of this invention can meet the target attenuation amount, reduce gear meshing noise in the steering gear itself and the energy transmitted from the road surface excitation to the steering wheel via the column, improve steering wheel vibration and noise, and enhance driving comfort.

[0138] One embodiment of the present invention provides a storage medium that stores computer instructions, which, when executed by a computer, are used to perform all the steps of the flexible coupling parameter determination method described above.

[0139] In the context of this disclosure, a storage medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. The storage medium can be a machine-readable signal medium or a machine-readable storage medium. Optionally, the storage medium can be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), compact disc ROM (CD-ROM), magnetic tape, floppy disk, and optical data storage device.

[0140] One embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the flexible coupling parameter determination method as described above.

[0141] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for determining the parameters of an elastic coupling, characterized in that, include: Obtain the target attenuation of the flexible coupling applied to the steering column of the vehicle under test. Obtain the relationship between attenuation and static stiffness, and determine the static stiffness corresponding to the target attenuation as the target static stiffness of the elastic coupling based on the relationship between attenuation and static stiffness. The acquisition of the target attenuation amount of the flexible coupling applied to the steering column of the vehicle under test includes: Obtain the first vibration acceleration amplitude of the steering column of the vehicle under test without the flexible coupling installed at a first position within a given frequency range, where the first position is located below the installation position of the flexible coupling; Obtain the second vibration acceleration amplitude of the steering column of the benchmark vehicle at a given frequency range at a second position, which is located above the installation position of the flexible coupling; The target attenuation is calculated based on the first vibration acceleration amplitude and the second vibration acceleration amplitude; The process of obtaining the relationship between attenuation and static stiffness includes: After the steering column of the vehicle under test was equipped with flexible coupling samples of different static stiffness, multiple test vibration acceleration amplitudes were obtained at a second position above the flexible coupling sample, within a given frequency range. Based on the first vibration acceleration amplitude and the multiple test vibration acceleration amplitudes, multiple test attenuation values ​​are calculated respectively, and each test attenuation value is associated with the static stiffness of the elastic coupling sample used for testing. Based on the multiple test attenuation values ​​and corresponding static stiffness, the relationship between attenuation value and static stiffness is determined.

2. The method for determining the parameters of an elastic coupling according to claim 1, characterized in that, Determining the static stiffness corresponding to the target attenuation amount as the target static stiffness of the elastic coupling includes: The target static stiffness of the flexible coupling is obtained by dividing the target attenuation by the ratio of attenuation to static stiffness.

3. The method for determining the parameters of an elastic coupling according to claim 2, characterized in that, The target attenuation includes target attenuation in multiple directions, and the ratio of attenuation to static stiffness includes the ratio of attenuation to static stiffness in multiple directions. The step of dividing the target attenuation by the ratio of attenuation to static stiffness to obtain the target static stiffness of the elastic coupling includes: The target attenuation in each direction is divided by the ratio of the attenuation to the static stiffness in the corresponding direction to obtain the target static stiffness of the elastic coupling in each direction.

4. A method for optimizing a flexible coupling, characterized in that, include: Vibration and noise tests were conducted on the steering column of the vehicle under test without a flexible coupling to determine the problem frequency range as the given frequency range; By performing the method for determining the parameters of the flexible coupling as described in any one of claims 1 to 3, the target static stiffness of the flexible coupling is obtained; Produce flexible couplings that meet the target static stiffness of flexible couplings as median flexible couplings; Install the median flexible coupling onto the vehicle under test and conduct vibration and noise tests again to determine if it meets the vibration and noise requirements. If it does, output the parameters of the median flexible coupling; otherwise, modify the structure of the median flexible coupling and test again until it meets the vibration and noise requirements.

5. An electronic device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors to enable at least one of the processors to perform the flexible coupling parameter determination method as described in any one of claims 1 to 3.

6. A storage medium, characterized in that, The storage medium stores computer instructions, which, when executed by the computer, are used to perform all the steps of the flexible coupling parameter determination method as described in any one of claims 1 to 3.

7. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the method for determining the parameters of the flexible coupling as described in any one of claims 1 to 3.

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