Steering transmission ratio adjustment method, device, electronic device and vehicle

Abstract

The present invention discloses a method and device for adjusting a steering transmission ratio, an electronic device and a vehicle. The method comprises: determining the standard deviation of an influencing factor using a three-dimensional size control system, wherein the influencing factor is used to characterize the factors that affect the steering transmission ratio of the vehicle; using a simulation platform, a matrix laboratory and a six sigma tool, jointly analyzing the standard deviation of the influencing factor to obtain the factor value of the influencing factor; and adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor. The present invention solves the technical problem that the steering transmission ratio of the vehicle is difficult to adjust in the related art.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and in particular to a method and device for adjusting a steering transmission ratio, an electronic device and a vehicle. Background Art

[0002] In automotive engineering, the steering system of a car is an important component, among which the steering ratio of the car directly affects the driving stability of the user. Therefore, whether the steering ratio can meet the standards and achieve good robustness is a very important part of the design process. For the same steering ratio design, the steering ratio obtained by actual vehicle testing has a large error, which will have a great impact on the driving stability of the vehicle. At the same time, if you want to adjust the steering ratio in the actual vehicle, it will take a lot of time and economic cost, which makes it difficult to adjust the steering ratio.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiment of the present invention provides a method for adjusting a steering transmission ratio, so as to at least solve the technical problem in the related art that the steering transmission ratio of a vehicle is difficult to adjust.

[0005] According to another aspect of an embodiment of the present invention, a method for adjusting a steering transmission ratio is provided, comprising: determining a standard deviation of an influencing factor using a three-dimensional dimensional control system, wherein the influencing factor is used to characterize factors that affect the steering transmission ratio of a vehicle; jointly analyzing the standard deviation of the influencing factor using a simulation platform, a matrix laboratory, and six sigma tools to obtain factor values ​​of the influencing factor; and adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor.

[0006] Optionally, the influencing factors include a first influencing factor and a second influencing factor, the first influencing factor includes at least a first position of a front toe arm outer point, the first position of the front toe arm outer point is used to indicate the position of the front toe arm outer point of the vehicle in the longitudinal direction, the second influencing factor includes at least a second position of the front toe arm outer point, the second position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the lateral direction, and the factor value of the influencing factor is adjusted based on the standard deviation of the influencing factor, including: determining a first interval corresponding to the first influencing factor and a second interval corresponding to the second influencing factor based on the standard deviation of the influencing factor, the first interval and the second interval are used to indicate that the steering transmission ratio is in a first robust state; adjusting the factor value of the first influencing factor based on the first interval, wherein the adjusted first factor value is within the first interval; adjusting the factor value of the second influencing factor based on the second interval, wherein the adjusted second factor value is within the second interval.

[0007] Optionally, based on the standard deviation of the influencing factor, determining the first interval corresponding to the first influencing factor includes: obtaining the average value of the factor value of the first influencing factor to obtain a first average value; obtaining the product of the standard deviation of the influencing factor and a first multiple to obtain a first product; determining the minimum value of the first interval based on the difference between the first average value and the first product; determining the maximum value of the first interval based on the sum of the first average value and the first product.

[0008] Optionally, based on the standard deviation of the influencing factor, determining the second interval corresponding to the second influencing factor includes: obtaining the average value of the factor value of the second influencing factor to obtain a second average value; obtaining the product of the standard deviation of the influencing factor and a second multiple to obtain a second product; determining the minimum value of the second interval based on the difference between the second average value and the second product; determining the maximum value of the second interval based on the sum of the second average value and the second product.

[0009] Optionally, the factor value of the influencing factor is adjusted based on the standard deviation of the influencing factor, including: determining a third interval corresponding to the first influencing factor based on the standard deviation of the influencing factor, the third interval is used to indicate that the steering transmission ratio is in a second stable state, and the stability of the second stable state is less than that of the first stable state; adjusting the factor value of the first influencing factor based on the third interval, wherein the adjusted third factor value is within the third interval.

[0010] Optionally, based on the standard deviation of the influencing factor, determining the third interval corresponding to the first influencing factor includes: obtaining the average value of the factor value of the first influencing factor to obtain a first average value; obtaining the product of the standard deviation of the influencing factor and a third multiple to obtain a third product; determining the minimum value of the third interval based on the difference between the first average value and the third product; determining the maximum value of the third interval based on the sum of the first average value and the third product.

[0011] Optionally, the method further includes: when the factor value of the first influencing factor is in the first interval and the factor value of the second influencing factor is in the second interval, controlling the factor value of the first influencing factor and the factor value of the second influencing factor to remain unchanged.

[0012] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute any one of the above-mentioned methods for adjusting the steering transmission ratio through the computer program.

[0013] According to another aspect of an embodiment of the present invention, an electronic device is also provided, comprising: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors execute any one of the above-mentioned steering transmission ratio adjustment methods.

[0014] The steering transmission ratio adjustment method provided in the embodiment of the present invention includes: using a three-dimensional size control system to determine the standard deviation of the influencing factors, wherein the influencing factors are used to characterize the factors that affect the steering transmission ratio of the vehicle; using a simulation platform, a matrix laboratory and six sigma tools to jointly analyze the standard deviation of the influencing factors to obtain the factor value of the influencing factors; and adjusting the factor value of the influencing factors based on the standard deviation of the influencing factors. It is easy to notice that the standard deviation of the influencing factors that affect the steering transmission ratio of the vehicle can be determined, and the factor value of the influencing factors can be determined using the standard deviation of the influencing factors, and the factor value of the influencing factors can be adjusted, so that the steering transmission ratio can be adjusted by adjusting the factor value of the influencing factors, avoiding the inconvenience caused by adjusting the steering transmission ratio in the actual vehicle, thereby solving the technical problem of the difficulty in adjusting the steering transmission ratio of the vehicle in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 is a flow chart of a method for adjusting a steering transmission ratio according to an embodiment of the present invention;

[0017] Figure 2 is a distribution diagram of influencing factors according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of adjusting a steering transmission ratio according to an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of a steering transmission ratio adjustment device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Example 1

[0023] Figure 1 is a flow chart of a method for adjusting a steering transmission ratio according to an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0024] Step S102: using the three-dimensional size control system to determine the standard deviation of the influencing factors, wherein the influencing factors are used to characterize the factors that affect the steering transmission ratio of the vehicle.

[0025] The above-mentioned influencing factors can be used to represent the factors that affect the steering transmission ratio of the vehicle. Optionally, the number of influencing factors may include: steering gear displacement coefficient, longitudinal position of the outer point of the tie rod, lateral position of the outer point of the lower control arm, upper column universal joint phase angle, intermediate shaft universal joint phase angle, longitudinal position of the outer point of the tie rod, longitudinal position of the outer point of the lower control arm, and upper and lower positions of the outer point of the lower control arm.

[0026] In an optional embodiment, a three-dimensional dimensional control system (Three Dimensional Control System, 3DCS for short) is used to generate the standard deviation of each influencing factor. Table 1 is a list of optional standard deviations of influencing factors according to an embodiment of the present invention.

[0027] Table 1

[0028] Influencing factors Standard Deviation Six times the standard deviation Longitudinal position of the outer point of the lower control arm 0.34 2.06 Lateral position of lower control arm outer point 0.295 1.77 Outer point position of lower control arm in up and down direction 0.194 1.164 Longitudinal position of the outer point of the front arm 0.31 1.86 Lateral position of the outer point of the front toe arm 0.6928 4.1572 Front arm outer point vertical position 0.289 1.738 Upper column universal joint phase angle 2.25 13.5 Upper column universal joint phase angle 2.25 13.5 Steering gear displacement coefficient 0.046 0.276

[0029] As shown in Table 1, the standard deviation of the longitudinal position of the outer point of the lower control arm can be 0.34, the standard deviation of the lateral position of the outer point of the lower control arm can be 0.295, the standard deviation of the up-down position of the outer point of the lower control arm can be 0.194, the standard deviation of the longitudinal position of the outer point of the front toe arm can be 0.31, the standard deviation of the lateral position of the outer point of the front toe arm can be 0.6928, the standard deviation of the up-down position of the outer point of the front toe arm can be 0.289, the standard deviation of the phase angle of the upper column universal joint can be 2.25, the standard deviation of the phase angle of the upper column universal joint can be 2.25, and the standard deviation of the steering gear displacement coefficient can be 0.046.

[0030] Optionally, since the standard deviation of the influencing factors is small, the standard deviation of the influencing factors can be expanded, wherein the expansion multiple can be set by the technical personnel in this field. In this application, the expansion is explained by six times, so that the six times standard deviation of the longitudinal position of the outer point of the lower control arm is 2.06, the six times standard deviation of the lateral position of the outer point of the lower control arm is 1.77, the six times standard deviation of the up and down position of the outer point of the lower control arm is 1.164, the six times standard deviation of the longitudinal position of the outer point of the front toe arm is 1.86, the six times standard deviation of the lateral position of the outer point of the front toe arm is 4.1572, the six times standard deviation of the up and down position of the outer point of the front toe arm is 1.738, the six times standard deviation of the phase angle of the upper column universal joint is 13.5, the six times standard deviation of the phase angle of the upper column universal joint is 13.5, and the six times standard deviation of the steering gear displacement coefficient is 0.276.

[0031] In an optional embodiment, in order to improve the stability of the vehicle's steering system, the factors that affect the vehicle's steering transmission ratio can be determined in advance during the vehicle design process, so that the vehicle's steering transmission ratio can be adjusted by adjusting the factor values ​​of the factors that affect the steering transmission ratio, thereby avoiding a lot of work incurred by directly adjusting the steering transmission ratio in the actual vehicle, thereby solving the technical problem of the difficulty in adjusting the vehicle's steering transmission ratio in related technologies and improving the stability of the vehicle during driving.

[0032] Step S104: using the simulation platform, matrix laboratory and six sigma tools, jointly analyzing the standard deviations of the influencing factors to obtain the factor values ​​of the influencing factors.

[0033] The above-mentioned simulation platform may be Automatic Dynamic Analysis of Mechanical Systems Car (ADAMS Car for short).

[0034] The factor value of the influencing factor mentioned above may include an average value of the influencing factor, a maximum value of the influencing factor, and a minimum value of the influencing factor.

[0035] In an optional embodiment, a simulation platform, a matrix laboratory, and a six sigma tool can be used to build a steering ratio robustness analysis model, and the standard deviation of the influencing factor can be processed using the steering ratio robustness analysis model to obtain the factor value of the influencing factor. Optionally, the steering ratio of the vehicle can be adjusted by adjusting the factor value of the influencing factor. Table 2 is a value table of factor values ​​of an optional influencing factor according to an embodiment of the present invention. As shown in Table 2, when the standard deviation of an influencing factor is 0.69246, the steering ratio robustness analysis model can be used to calculate an average value of 16.272, a minimum value of 16.07, and a maximum value of 16.504.

[0036] Table 2

[0037] entry Numeric average value 16.272 Standard Deviation 0.69246 Minimum 16.07 Maximum 16.504

[0038] Step S106: adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor.

[0039] In an optional embodiment, after obtaining the standard deviation of the influencing factors, a steering transmission ratio robustness analysis model can be built using a simulation platform, a matrix laboratory, and six sigma tools, and the steering transmission ratio robustness analysis model is used to process the standard deviation of the influencing factors to obtain the factor value of the influencing factor. Figure 2 is a schematic diagram of the distribution of influencing factors according to an embodiment of the present invention, such as Figure 2 As shown, the influencing factors can present a normal distribution structure.

[0040] For different standard deviations of influencing factors, the factor values ​​of the influencing factors obtained after analysis and processing by the steering transmission ratio robustness analysis model are different. Therefore, the standard deviation of the influencing factors can be adjusted to obtain different factor values ​​of the influencing factors. Through multiple tests, it can be determined that when the factor value of the influencing factor is in a certain state, the stability of the vehicle's steering transmission ratio is better, that is, the vehicle's driving state is the most stable, thereby solving the technical problem of low vehicle driving stability caused by the difficulty in adjusting the steering transmission ratio.

[0041] The steering transmission ratio adjustment method provided in the embodiment of the present invention includes: using a three-dimensional size control system to determine the standard deviation of the influencing factors, wherein the influencing factors are used to characterize the factors that affect the steering transmission ratio of the vehicle; using a simulation platform, a matrix laboratory and six sigma tools to jointly analyze the standard deviation of the influencing factors to obtain the factor value of the influencing factors; and adjusting the factor value of the influencing factors based on the standard deviation of the influencing factors. It is easy to notice that the standard deviation of the influencing factors that affect the steering transmission ratio of the vehicle can be determined, and the factor value of the influencing factors can be determined using the standard deviation of the influencing factors, and the factor value of the influencing factors can be adjusted, so that the steering transmission ratio can be adjusted by adjusting the factor value of the influencing factors, avoiding the inconvenience caused by adjusting the steering transmission ratio in the actual vehicle, thereby solving the technical problem of the difficulty in adjusting the steering transmission ratio of the vehicle in the related art.

[0042] Optionally, the influencing factors include a first influencing factor and a second influencing factor, the first influencing factor includes at least a first position of a front toe arm outer point, the first position of the front toe arm outer point is used to indicate the position of the front toe arm outer point of the vehicle in the longitudinal direction, the second influencing factor includes at least a second position of the front toe arm outer point, the second position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the lateral direction, and the factor value of the influencing factor is adjusted based on the standard deviation of the influencing factor, including: determining a first interval corresponding to the first influencing factor and a second interval corresponding to the second influencing factor based on the standard deviation of the influencing factor, the first interval and the second interval are used to indicate that the steering transmission ratio is in a first robust state; adjusting the factor value of the first influencing factor based on the first interval, wherein the adjusted first factor value is within the first interval; adjusting the factor value of the second influencing factor based on the second interval, wherein the adjusted second factor value is within the second interval.

[0043] The above-mentioned first influencing factor may include the longitudinal position of the outer point of the front toe arm, the steering gear displacement coefficient, the longitudinal position of the outer point of the tie rod, the lateral position of the outer point of the lower control arm, the phase angle of the upper column universal joint, the phase angle of the intermediate shaft universal joint, the longitudinal position of the outer point of the tie rod, the longitudinal position of the outer point of the lower control arm, the up and down position of the outer point of the lower control arm, etc.

[0044] The second influencing factor mentioned above may include the position of the outer point of the toe arm in the lateral direction.

[0045] The first robust state mentioned above can be used to indicate that the robustness of the steering transmission ratio of the vehicle is good. Optionally, when the steering transmission ratio is in the first robust state, the driving stability of the vehicle is good.

[0046] In an optional embodiment, the simulation platform, matrix laboratory and six sigma tools can be used to jointly analyze the standard deviations of multiple different first influencing factors, so as to determine the intervals in which the multiple first influencing factors are distributed corresponding to the standard deviations of the multiple different first influencing factors, and the interval in which the first influencing factors are distributed when the steering transmission ratio of the vehicle is good is determined as the first interval. Further, the simulation platform, matrix laboratory and six sigma tools can be used to jointly analyze the standard deviations of multiple different second influencing factors, so as to determine the intervals in which the multiple second influencing factors are distributed corresponding to the standard deviations of the multiple different second influencing factors, and the interval in which the second influencing factors are distributed when the steering transmission ratio of the vehicle is good is determined as the second interval.

[0047] Further, after obtaining the first interval and the second interval, it is possible to determine whether the steering transmission ratio of the vehicle is in the first robust state by judging whether the magnitude of the factor value of the first influencing factor of the vehicle is in the first interval and judging whether the magnitude of the factor value of the second influencing factor of the vehicle is in the second interval. Optionally, when the magnitude of the factor value of the first influencing factor is not in the first interval, or the magnitude of the factor value of the second influencing factor is not in the second interval, the magnitude of the factor value of the first influencing factor and the magnitude of the factor value of the second influencing factor are adjusted so that the magnitude of the factor value of the first influencing factor is in the first interval and the magnitude of the factor value of the second influencing factor is in the second interval, thereby adjusting the steering transmission ratio of the vehicle. Optionally, when the factor value of the first influencing factor is in the first interval and the factor value of the second influencing factor is in the second interval, the magnitude of the steering transmission ratio of the vehicle can be in a good state.

[0048] Optionally, based on the standard deviation of the influencing factor, determining the first interval corresponding to the first influencing factor includes: obtaining the average value of the factor value of the first influencing factor to obtain a first average value; obtaining the product of the standard deviation of the influencing factor and a first multiple to obtain a first product; determining the minimum value of the first interval based on the difference between the first average value and the first product; determining the maximum value of the first interval based on the sum of the first average value and the first product.

[0049] The first multiple mentioned above can be set by those skilled in the art. In the present application, the first multiple is described as 4, but the size of the first multiple is not limited thereto.

[0050] In an optional embodiment, when using the simulation platform, the matrix laboratory and the Six Sigma tool to jointly analyze the standard deviations of multiple different first influencing factors, the average value of the factor value of the first influencing factor can be calculated first, and the average value of the factor value of the first influencing factor can be determined as the first average value. Further, the product of the standard deviation of the first influencing factor and the first multiple, that is, the first product, can be determined. Optionally, the minimum value of the first interval is obtained by calculating the difference between the first average value and the first product, and the maximum value of the first interval is obtained by calculating the sum of the first average value and the first product.

[0051] Optionally, based on the standard deviation of the influencing factor, determining the second interval corresponding to the second influencing factor includes: obtaining the average value of the factor value of the second influencing factor to obtain a second average value; obtaining the product of the standard deviation of the influencing factor and a second multiple to obtain a second product; determining the minimum value of the second interval based on the difference between the second average value and the second product; determining the maximum value of the second interval based on the sum of the second average value and the second product.

[0052] The second multiple mentioned above can be set by those skilled in the art. In the present application, the second multiple is described as 1.44, but the size of the second multiple is not limited thereto.

[0053] In an optional embodiment, when using the simulation platform, the matrix laboratory and the six sigma tool to jointly analyze the standard deviations of multiple different second influencing factors, the average value of the factor values ​​of the second influencing factors can be calculated first, and the average value of the factor values ​​of the second influencing factors can be determined as the second average value. Further, the product of the standard deviation of the second influencing factor and the second multiple, that is, the second product, can be determined. Optionally, the minimum value of the second interval is obtained by calculating the difference between the second average value and the second product, and the maximum value of the second interval is obtained by calculating the sum of the second average value and the second product.

[0054] Optionally, the factor value of the influencing factor is adjusted based on the standard deviation of the influencing factor, including: determining a third interval corresponding to the first influencing factor based on the standard deviation of the influencing factor, the third interval is used to indicate that the steering transmission ratio is in a second stable state, and the stability of the second stable state is less than that of the first stable state; adjusting the factor value of the first influencing factor based on the third interval, wherein the adjusted third factor value is within the third interval.

[0055] The third interval mentioned above may be a distribution interval corresponding to the first influencing factor when the steering transmission ratio of the vehicle is in a sub-robust state.

[0056] The above-mentioned second stable state is used to indicate that the steering transmission ratio of the vehicle is in a sub-robust state. Optionally, when the steering transmission ratio of the vehicle is in the second stable state, the driving stability of the vehicle is not as good as when the steering transmission ratio of the vehicle is in the first stable state.

[0057] In an optional embodiment, the standard deviations of multiple different first influencing factors can be jointly analyzed by using a simulation platform, a matrix laboratory, and six sigma tools, so as to determine the intervals in which the multiple first influencing factors corresponding to the standard deviations of the multiple different first influencing factors are distributed, and the interval in which the first influencing factors corresponding to the state in which the stability of the steering transmission ratio of the vehicle is good is determined as the third interval. Optionally, when the interval in which the first influencing factors are distributed is the third interval, the robustness of the steering transmission ratio of the vehicle is lower than the robustness of the steering transmission ratio of the vehicle when the interval in which the first influencing factors are distributed is the first interval. Optionally, when the steering transmission ratio of the vehicle is not required to be very precise, it is only necessary to determine the interval in which the first influencing factors of the vehicle are distributed as the third interval.

[0058] Optionally, based on the standard deviation of the influencing factor, determining the third interval corresponding to the first influencing factor includes: obtaining the average value of the factor value of the first influencing factor to obtain a first average value; obtaining the product of the standard deviation of the influencing factor and a third multiple to obtain a third product; determining the minimum value of the third interval based on the difference between the first average value and the third product; determining the maximum value of the third interval based on the sum of the first average value and the third product.

[0059] The third multiple mentioned above can be set by those skilled in the art. In the present application, the third multiple is described as 3, but the size of the third multiple is not limited to this.

[0060] In an optional embodiment, when using the simulation platform, the matrix laboratory and the Six Sigma tool to jointly analyze the standard deviations of multiple different first influencing factors, the average value of the factor value of the first influencing factor can be calculated first, and the average value of the factor value of the first influencing factor can be determined as the first average value. Further, the product of the standard deviation of the first influencing factor and the third multiple, that is, the third product, can be determined. Optionally, the minimum value of the third interval is obtained by calculating the difference between the first average value and the third product, and the maximum value of the third interval is obtained by calculating the sum of the first average value and the third product.

[0061] Optionally, the method further includes: when the factor value of the first influencing factor is in the first interval and the factor value of the second influencing factor is in the second interval, controlling the factor value of the first influencing factor and the factor value of the second influencing factor to remain unchanged.

[0062] In an optional embodiment, when the factor value of the first influencing factor is in the first interval and the factor value of the second influencing factor is in the second interval, the robustness of the steering transmission ratio of the vehicle is in an optimal state. Therefore, there is no need to adjust the factor value of the first influencing factor and the factor value of the second influencing factor. At this time, it is only necessary to control the factor value of the first influencing factor and the factor value of the second influencing factor to remain unchanged.

[0063] Figure 3 is a schematic diagram of adjusting a steering transmission ratio according to an embodiment of the present invention, such as Figure 3 As shown, when the steering transmission ratio of the vehicle is adjusted, it is necessary to first analyze the characteristics of the steering system to determine the influencing factors that will affect the vehicle's steering transmission ratio. Further, it is necessary to determine the standard deviation of the influencing factors, and according to the standard deviation of the influencing factors, use the simulation platform, matrix laboratory and six sigma tools to build a steering transmission ratio robustness analysis model, and use the steering transmission ratio robustness analysis model to process the standard deviation of the influencing factors to obtain the change interval of the factor value of the influencing factor. Optionally, after determining the change interval of the factor value of the influencing factor, the factor value of the influencing factor can be compared with the change interval of the factor value of the influencing factor to determine whether the error between the factor value of the influencing factor and the change interval of the factor value of the influencing factor is greater than the current calculation error. When the judgment result is yes, that is, the error is greater than the current calculation error, the factor value of the influencing factor needs to be adjusted. After adjusting the factor value of the influencing factor, the adjustment process of the steering transmission ratio will end. When the judgment result is no, that is, the error is less than or equal to the current calculation error, the error of the factor value of other influencing factors can be determined.

[0064] Example 2

[0065] According to another aspect of the embodiment of the present invention, a device for adjusting a steering transmission ratio is provided. Figure 4 is a schematic diagram of a steering transmission ratio adjustment device according to an embodiment of the present invention, such as Figure 4 As shown, the device comprises:

[0066] A determination module 402 is used to determine a standard deviation of an influencing factor using a three-dimensional size control system, wherein the influencing factor is used to characterize a factor that affects a steering transmission ratio of a vehicle;

[0067] The analysis module 404 is used to use the simulation platform, the matrix laboratory and the Six Sigma tool to jointly analyze the standard deviation of the influencing factors to obtain the factor value of the influencing factors;

[0068] The adjustment module 406 is configured to adjust the factor value of the influencing factor based on the standard deviation of the influencing factor.

[0069] Optionally, the adjustment module 406 includes: a first determination unit, used to determine a first interval corresponding to a first influencing factor and a second interval corresponding to a second influencing factor based on the standard deviation of the influencing factor, the first interval and the second interval being used to indicate that the steering transmission ratio is in a first robust state; a first adjustment unit, used to adjust the factor value of the first influencing factor based on the first interval, wherein the adjusted first factor value is within the first interval; and a second adjustment unit, used to adjust the factor value of the second influencing factor based on the second interval, wherein the adjusted second factor value is within the second interval.

[0070] Optionally, the first determination unit includes: a first acquisition subunit, used to acquire the average value of the factor value of the first influencing factor to obtain a first average value; a second acquisition subunit, used to acquire the product of the standard deviation of the influencing factor and a first multiple to obtain a first product; the first determination subunit, used to determine the minimum value of the first interval based on the difference between the first average value and the first product; and the second determination subunit, used to determine the maximum value of the first interval based on the sum of the first average value and the first product.

[0071] Optionally, the first determination unit also includes: a third acquisition subunit, used to obtain the average value of the factor value of the second influencing factor to obtain a second average value; a fourth acquisition subunit, used to obtain the product of the standard deviation of the influencing factor and the second multiple to obtain a second product; the third determination subunit, used to determine the minimum value of the second interval based on the difference between the second average value and the second product; the fourth determination subunit, used to determine the maximum value of the second interval based on the sum of the second average value and the second product.

[0072] Optionally, the adjustment module 406 also includes: a second determination unit, used to determine a third interval corresponding to the first influencing factor based on the standard deviation of the influencing factor, the third interval is used to indicate that the steering transmission ratio is in a second robust state, and the stability of the second robust state is less than that of the first robust state; an adjustment unit, used to adjust the factor value of the first influencing factor based on the third interval, wherein the adjusted third factor value is within the third interval.

[0073] Optionally, the second determination unit includes: a fifth acquisition subunit, used to acquire the average value of the factor value of the first influencing factor to obtain a first average value; a sixth acquisition subunit, used to acquire the product of the standard deviation of the influencing factor and a third multiple to obtain a third product; a fifth determination subunit, used to determine the minimum value of the third interval based on the difference between the first average value and the third product; and a sixth determination subunit, used to determine the maximum value of the third interval based on the sum of the first average value and the third product.

[0074] Optionally, the device further includes: a control module, configured to control the factor value of the first influencing factor and the factor value of the second influencing factor to remain unchanged when the factor value of the first influencing factor is in the first interval and the factor value of the second influencing factor is in the second interval.

[0075] Example 3

[0076] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute any one of the above-mentioned methods for adjusting the steering transmission ratio through the computer program.

[0077] Example 4

[0078] According to another aspect of an embodiment of the present invention, a vehicle is also provided, comprising: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors execute any one of the above-mentioned methods for adjusting the steering transmission ratio.

[0079] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0080] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0082] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0083] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0084] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0085] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for adjusting a steering transmission ratio, characterized in that: include: Determining a standard deviation of an influencing factor using a three-dimensional dimensional control system, wherein the influencing factor is used to characterize a factor that affects a steering transmission ratio of a vehicle; Using the simulation platform, matrix laboratory and six sigma tools, the standard deviations of the influencing factors are jointly analyzed to obtain the factor values ​​of the influencing factors; adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor; Wherein, the influencing factors include a first influencing factor and a second influencing factor, the first influencing factor includes at least a first position of a front toe arm outer point, the first position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the longitudinal direction of the vehicle, the second influencing factor includes at least a second position of the front toe arm outer point, the second position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the lateral direction, and adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor includes: adjusting the factor value of the first influencing factor and the factor value of the second influencing factor based on the standard deviation of the influencing factor.

2. The method for adjusting the steering transmission ratio according to claim 1, characterized in that: Adjusting the factor value of the first influencing factor and the factor value of the second influencing factor based on the standard deviation of the influencing factor includes: Based on the standard deviation of the influencing factor, determining a first interval corresponding to the first influencing factor and a second interval corresponding to the second influencing factor, wherein the first interval and the second interval are used to indicate that the steering transmission ratio is in a first robust state; Adjusting the factor value of the first influencing factor based on the first interval, wherein the adjusted first factor value is within the first interval; The factor value of the second influencing factor is adjusted based on the second interval, wherein the adjusted second factor value is within the second interval.

3. The method for adjusting the steering transmission ratio according to claim 2, characterized in that: Determining a first interval corresponding to the first influencing factor based on a standard deviation of the influencing factor includes: Obtaining an average value of the factor values ​​of the first influencing factors to obtain a first average value; Obtaining the product of the standard deviation of the influencing factor and the first multiple to obtain a first product; determining a minimum value of the first interval based on a difference between the first average value and the first product; A maximum value of the first interval is determined based on a sum of the first average value and the first product.

4. The method for adjusting the steering transmission ratio according to claim 2, characterized in that: Determining a second interval corresponding to the second influencing factor based on a standard deviation of the influencing factor includes: Obtaining an average value of the factor values ​​of the second influencing factor to obtain a second average value; Obtaining the product of the standard deviation of the influencing factor and the second multiple to obtain a second product; determining a minimum value of the second interval based on a difference between the second average value and the second product; A maximum value of the second interval is determined based on a sum of the second average value and the second product.

5. The method for adjusting the steering transmission ratio according to claim 1, characterized in that: Adjusting the factor value of the influencing factor based on the standard deviation of the influencing factor includes: determining a third interval corresponding to the first influencing factor based on a standard deviation of the influencing factor, the third interval being used to indicate that the steering transmission ratio is in a second robust state, and the stability of the second robust state is less than that of the first robust state; The factor value of the first influencing factor is adjusted based on the third interval, wherein the adjusted third factor value is within the third interval.

6. The method for adjusting the steering transmission ratio according to claim 5, characterized in that: Determining a third interval corresponding to the first influencing factor based on a standard deviation of the influencing factor includes: Obtaining an average value of the factor values ​​of the first influencing factors to obtain a first average value; Obtaining the product of the standard deviation of the influencing factor and the third multiple to obtain a third product; determining a minimum value of the third interval based on a difference between the first average value and the third product; A maximum value of the third interval is determined based on a sum of the first average value and the third product.

7. The method for adjusting the steering transmission ratio according to claim 2, characterized in that: The method further comprises: When the factor value of the first influencing factor is within the first interval and the factor value of the second influencing factor is within the second interval, the factor value of the first influencing factor and the factor value of the second influencing factor are controlled to remain unchanged.

8. A device for adjusting a steering transmission ratio, characterized in that: include: A determination module, used to determine a standard deviation of an influencing factor using a three-dimensional size control system, wherein the influencing factor is used to characterize a factor that affects a steering transmission ratio of a vehicle; An analysis module, for using a simulation platform, a matrix laboratory and a six sigma tool to jointly analyze the standard deviation of the influencing factors to obtain the factor value of the influencing factors; An adjustment module, configured to adjust the factor value of the influencing factor based on the standard deviation of the influencing factor; Wherein, the influencing factors include a first influencing factor and a second influencing factor, the first influencing factor includes at least a first position of a front toe arm outer point, the first position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the longitudinal direction of the vehicle, and the second influencing factor includes at least a second position of the front toe arm outer point, the second position of the front toe arm outer point is used to indicate the position of the front toe arm outer point in the lateral direction; the adjustment module is further used to adjust the factor value of the first influencing factor and the factor value of the second influencing factor based on the standard deviation of the influencing factors.

9. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the steering transmission ratio adjustment method according to any one of claims 1 to 7 through the computer program.

10. A vehicle, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors execute the steering transmission ratio adjustment method described in any one of claims 1-7.

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