Steering control method and system for reducing EPS inductive vibration under transient impact

Abstract

The invention provides a steering control method and system for reducing EPS inductive vibration under transient impact. The method comprises the steps that a whole vehicle installation mode is simulated, and an original state EPS test bench is built; taking an EPS test bench in an original state as a structural design adjustment basis, carrying out different structural design changes, and building EPS test benches with different structural adjustment designs; respectively carrying out transient impact simulation tests to obtain vibration test results; and according to a test result, determining an EPS test bench with an optimal structural design under transient impact, and carrying out corresponding structural improvement design on an EPS steering system in the whole vehicle. According to the invention, through carrying the EPS steering system test bench and simulating the installation mode of the whole vehicle, transient impact is carried out on the bench, the transient impact working condition is reproduced, the structure adjustment design is carried out based on the bench in the original state, and through comparative analysis, the EPS inductance non-failure design under the standard transient impact working condition is realized, and the safety of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a steering control method and system for reducing EPS inductive vibration under transient impact. Background Art

[0002] At present, the steering system configuration of off-road vehicles on the market is almost all EPS (Electric Power Steering) steering system. Due to the layout reasons, EPS steering system is generally arranged on the frame beam. However, due to the demand for outdoor off-road, there are more random transient impacts in off-road venues. The worse the off-road venue, the greater the transient impact. When the transient impact hits the frame beam, the transient force will be transmitted to the inductor inside the EPS steering system controller, causing the inductor to desolder and fail.

[0003] After research and analysis, it was found that, for example, a 100g acceleration impact will excite the frame beam and cause it to vibrate. The vibration of the frame beam will be transmitted to the inductor inside the EPS controller through the EPS installation point. The modal distribution of the inductor itself is about 300Hz. Once the EPS steering system or the installed beam has this mode, there will be resonance to a large extent. The vibration of the EPS controller inductor will be amplified, accelerating the failure of the inductor, causing the vehicle to have no steering assistance, which will cause serious safety accidents.

[0004] Therefore, it is very necessary to study a steering device and control method for reducing the vibration of EPS inductance under transient impact conditions. The device and method can effectively verify and control the reduction of EPS inductance vibration on a test bench, and ensure that the EPS inductance does not fail through transient impact verification. Summary of the invention

[0005] The present application provides a steering control method for reducing the vibration of the EPS inductor under transient impact, which can solve the technical problem in the prior art that when the vehicle is off-road, the chassis frame is subjected to a large transient impact in the lateral direction, and the transient force is transmitted to the EPS inductor through the following transmission path: "frame beam-EPS beam installation point-EPS shell-EPS inductor", and the large impact force causes the EPS inductor to become desoldered, and finally the EPS loses steering assistance, posing a safety hazard.

[0006] In a first aspect, the present application provides a steering control method for reducing EPS inductive vibration under transient impact, comprising the following steps:

[0007] Simulate the whole vehicle installation method to build the original EPS test bench;

[0008] Taking the original EPS test bench as the basis for structural design adjustment, different structural design changes are made to build EPS test benches with different structural adjustment designs;

[0009] Transient impact simulation tests were performed on the original EPS test bench and the EPS test benches with different structural adjustments and designs, respectively, to obtain vibration test results of the EPS test benches with different structures under transient impact conditions;

[0010] According to the vibration test results of EPS test benches with different structures under transient impact conditions, the EPS test bench with the best structural design under transient impact is determined, and the corresponding structural improvement design of the EPS steering system in the whole vehicle is carried out.

[0011] In combination with the first aspect, in one embodiment, the EPS test bench in the original state is used as the basis for structural design adjustment, different structural design changes are made, and EPS test benches with different structural adjustment designs are built, which specifically includes the following steps:

[0012] Change the EPS installation method in the original EPS test bench, and build an EPS test bench with different EPS installation methods;

[0013] The structural strength of the inductor in the original EPS test bench is changed, and an EPS test bench with different inductor structural strength adjustment designs is built.

[0014] In combination with the first aspect, in one embodiment, the changing of the EPS installation mode in the original EPS test bench and the construction of the EPS test bench with different EPS installation modes and adjustment designs specifically include the following steps:

[0015] Install the EPS transversely on the frame crossbeam and build an EPS test bench with EPS transversely installed;

[0016] Install the EPS vertically on the frame crossbar and build an EPS test bench with the EPS vertically installed.

[0017] In combination with the first aspect, in one embodiment, the changing the structural strength of the inductance in the original EPS test bench and building an EPS test bench with different inductance structural strength adjustment designs specifically includes the following steps:

[0018] The convex bulge on the terminal of the lapped inductor in the original EPS test bench is removed, and the terminal of the lapped inductor is adjusted to be reversed, so as to build an EPS test bench with an adjusted inductor structure strength design.

[0019] In combination with the first aspect, in one implementation, the EPS test bench in the original state and the EPS test bench with different structural adjustment designs are subjected to transient impact simulation tests respectively, and vibration test results of the EPS test benches with different structures under transient impact conditions are obtained, which specifically includes the following steps:

[0020] Vibration sensors are arranged at multiple points on the original EPS test bench and the EPS test benches with different structural adjustments and designs;

[0021] Taking the middle position of the frame crossbeam as the transient impact input point, transient impact simulation tests were carried out on the original EPS test bench with multi-point vibration sensors and the EPS test bench with different structural adjustment designs, and the vibration test results of EPS test benches with different structures under transient impact conditions were obtained.

[0022] In combination with the first aspect, in one implementation, the EPS test bench in the original state and the EPS test bench with different structural adjustment designs respectively arrange vibration sensors at multiple points, specifically including the following steps:

[0023] Vibration sensors are arranged respectively on the middle position of the frame crossbeam, the EPS shell and the inductor of the original EPS test bench and the EPS test bench with different structural adjustment designs.

[0024] In combination with the first aspect, in one implementation, the middle position of the frame crossbeam is used as the transient impact input point, and transient impact simulation tests are performed on the original EPS test bench with multiple points of vibration sensors arranged and the EPS test benches with different structural adjustment designs, respectively, to obtain vibration test results of the EPS test benches with different structures under transient impact conditions, specifically including the following steps:

[0025] Taking the middle position of the frame crossbeam as the transient impact input point, hammer tests were carried out on the original EPS test bench with multi-point vibration sensors and the EPS test benches with different structural adjustment designs to obtain the vibration test results of EPS test benches with different structures under transient impact conditions.

[0026] In combination with the first aspect, in one implementation, the hammer tool used in the hammer test is an iron hammer or a rubber hammer.

[0027] In a second aspect, the present application provides a steering control system for reducing EPS inductive vibration under transient impact, comprising:

[0028] The original structure building module is used to simulate the whole vehicle installation mode to build the original EPS test bench; the adjustment structure building module is connected to the original structure building module in communication, and is used to use the original EPS test bench as the basis for structural design adjustment, make different structural design changes, and build EPS test benches with different structural adjustment designs;

[0029] A test result acquisition module is used to perform transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs, and obtain vibration test results of the EPS test benches with different structures under transient impact conditions;

[0030] The optimal structure determination module is communicated with the test result acquisition module, and is used to determine the EPS test bench with the best structural design under transient impact according to the vibration test results of EPS test benches with different structures under transient impact conditions, and to perform corresponding structural improvement design on the EPS steering system in the whole vehicle.

[0031] In conjunction with the second aspect, in one implementation, the adjustment structure building module includes:

[0032] The structural construction unit for adjusting the installation mode is communicatively connected with the original structural construction module, and is used to change the EPS installation mode in the original EPS test bench, and to build an EPS test bench with different EPS installation mode adjustment designs;

[0033] The structural building unit for adjusting the inductance structure strength is communicated with the original structure building module and is used to change the structural strength of the inductance in the original EPS test bench and build EPS test benches with different inductance structure strength adjustment designs.

[0034] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0035] By equipping the EPS steering system test bench with a transient impact test bench and simulating the installation method of the entire vehicle, the transient impact condition that causes the inductor failure in the EPS steering system controller is reproduced, and the structural adjustment design is carried out based on the original state of the test bench. Through comparative analysis, the EPS inductor failure-free design under standard transient impact conditions is achieved, thereby improving the safety of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a method flow of a steering control method for reducing EPS inductive vibration under transient impact in this application;

[0037] Figure 2 A schematic diagram of the structure of the EPS test bench in the original state provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the structure of an EPS test bench for vertically mounted EPS provided in an embodiment of the present application;

[0039] Figure 4 (a) is a schematic diagram of the connection between the inductor and the terminal of the EPS test bench in the original state; Figure 4 (b) is a schematic diagram of the connection between the inductor and the terminal after the inductor structure strength is adjusted and designed according to an embodiment of the present application;

[0040] Figure 5 A comparison chart of frequency response curves obtained from testing EPS test benches with different structures provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings 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 limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0043] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0044] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0045] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0046] First, some technical terms in the present application are explained to facilitate those skilled in the art to understand the present application.

[0047] EPS inductor is the inductor inside the EPS steering system controller.

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0049] First, as Figure 1 As shown, the present application provides a steering control method for reducing EPS inductance vibration under transient impact, comprising the following steps:

[0050] Step S1: Build an original EPS test bench by simulating the installation method of the whole vehicle;

[0051] Step S2: Taking the original EPS test bench as the basis for structural design adjustment, different structural design changes are made to build EPS test benches with different structural adjustment designs;

[0052] Step S3: performing transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs, respectively, to obtain vibration test results of the EPS test benches with different structures under transient impact conditions;

[0053] Step S4: According to the vibration test results of EPS test benches with different structures under transient impact conditions, determine the EPS test bench with the best structural design under transient impact, and make corresponding structural improvement design for the EPS steering system in the whole vehicle; in this step, EPS test benches with different structures include EPS test benches in the original state and EPS test benches with different structural adjustment designs.

[0054] This application carries out transient impact on the test bench by equipping the EPS steering system and simulating the installation mode of the whole vehicle, so as to reproduce the transient impact conditions that cause the inductance failure in the EPS steering system controller, and makes structural adjustment design based on the original state of the test bench. Through comparative analysis, the EPS inductance has no failure design under standard transient impact conditions, thereby improving the safety of the whole vehicle.

[0055] In one embodiment, the step S1: simulating the whole vehicle installation mode to build an original EPS test bench specifically includes the following steps:

[0056] Build a frame crossbeam on the iron floor and install the EPS steering system on the frame crossbeam; Figure 2 As shown, the front direction of the vehicle is the X direction, the EPS is connected to the frame crossbeam by bolts in the X direction, and vibration sensors are arranged at the frame crossbeam, EPS shell, and EPS inductor.

[0057] By simulating the whole vehicle installation method through step S1, the original EPS test bench is built to realize the simulated vibration test of the EPS inductor when it is separated from the whole vehicle, which is more convenient.

[0058] In one embodiment, the step S2: taking the original EPS test bench as the basis for structural design adjustment, making different structural design changes, and building EPS test benches with different structural adjustment designs, specifically includes the following steps:

[0059] Step S2A: changing the EPS installation mode in the original EPS test bench, and building an EPS test bench with different EPS installation modes;

[0060] Step S2B: changing the structural strength of the inductor in the original EPS test bench, and building an EPS test bench with different inductor structural strength adjustment designs.

[0061] This application carries out transient impact on an EPS steering system test bench by simulating the installation method of the whole vehicle, thereby reproducing the transient impact condition that causes the inductor failure in the EPS steering system controller. The structural EPS installation method and the structural strength of the inductor are adjusted based on the original state of the test bench, and then different EPS test benches are subjected to transient impact to determine the best designed EPS test bench, thereby achieving a failure-free design of the EPS inductor under standard transient impact conditions and improving the safety of the whole vehicle.

[0062] In one embodiment, the step S2A: changing the EPS installation mode in the original EPS test bench and building an EPS test bench with different EPS installation modes and adjustment designs specifically includes the following steps:

[0063] Step S2A1: Change the EPS installation from being horizontally mounted on the frame crossbeam to being installed as follows Figure 3 As shown, the EPS is vertically installed on the frame beam, and an EPS test bench with the EPS vertically installed is built. The front direction of the vehicle is the X direction, and the EPS is connected to the frame beam by bolts in the Z direction. Vibration sensors are arranged at the frame beam, EPS shell, and EPS inductor.

[0064] Based on the adjustment structure design of the EPS installation method in the EPS test bench in step S2A1, different EPS steering system structure optimization adjustment options are provided for the EPS inductor to resist vibration failure under transient impact.

[0065] In one embodiment, the step S2B: changing the structural strength of the inductor in the original EPS test bench and building an EPS test bench with different inductor structural strength adjustment designs specifically includes the following steps:

[0066] Step S2B1: Figure 4 As shown, there is a bulge in the original state of the inductor structure, and the overlap between the terminal and the inductor is a positive overlap design. The bulge on the terminal of the overlapped inductor in the original state of the EPS test bench is cancelled, and the terminal of the overlapped inductor is adjusted to be reversed. After the inductor structure is changed, the bulge is cancelled, which can effectively increase the welding surface between the terminal and the inductor. In addition, the overlap between the terminal and the inductor is a reverse overlap design, and the EPS test bench with adjusted inductor structure strength is constructed.

[0067] Based on the structural design of the adjustment of the inductor structure strength in the EPS test bench in step S2B1, different EPS steering system structural optimization adjustment options are provided for the EPS inductor to resist vibration failure under transient impact.

[0068] In the embodiment of the present application, the step S2B: changing the structural strength of the inductance in the original EPS test bench and building an EPS test bench with different inductance structural strength adjustment designs can also be implemented as follows:

[0069] Step S2B2: removing the convex bulge on the terminal of the lapped inductor in the original EPS test bench, and constructing an EPS test bench with an adjusted inductor structure strength; or,

[0070] Step S2B3: Reversely adjust the terminals of the overlapped inductor to build an EPS test bench with an adjusted inductor structure strength.

[0071] Compared with step S2B1, step S2B2 and step S2B3 make more detailed structural adjustments to the structure of the inductor in the EPS.

[0072] In one embodiment, step S3: performing transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs respectively, and obtaining vibration test results of the EPS test benches with different structures under transient impact conditions, specifically includes the following steps:

[0073] Step S31: arranging vibration sensors at multiple points on the original EPS test bench and the EPS test benches with different structural adjustment designs; specifically, arranging vibration sensors at the middle position of the frame crossbeam, the EPS shell, and the inductor of the original EPS test bench and the EPS test benches with different structural adjustment designs;

[0074] Step S32: Taking the middle position of the frame crossbeam as the transient impact input point, transient impact simulation tests are performed on the original EPS test bench with multi-point vibration sensors and the EPS test benches with different structural adjustment designs to obtain vibration test results of EPS test benches with different structures under transient impact conditions.

[0075] In one embodiment, the step S32: taking the middle position of the frame crossbeam as the transient impact input point, performing transient impact simulation tests on the original EPS test bench with multiple points of vibration sensors arranged and the EPS test benches with different structural adjustment designs, respectively, to obtain vibration test results of the EPS test benches with different structures under transient impact conditions, specifically includes the following steps:

[0076] Taking the middle position of the frame crossbeam as the transient impact input point, hammer tests were carried out on the original EPS test bench with multi-point vibration sensors and the EPS test benches with different structural adjustment designs to obtain the vibration test results of EPS test benches with different structures under transient impact conditions.

[0077] The transient impact condition of the EPS steering system is simulated and reproduced by hammering.

[0078] In one embodiment, the hammering tool used in the hammer test is an iron hammer or a rubber hammer; the iron hammer is used to hammer the EPS steering test bench to reproduce the transient impact condition of a single rapid impact; the rubber hammer is used to hammer the EPS steering test bench to reproduce the transient impact condition of multiple consecutive impacts. This provides a richer transient impact condition vibration test test for the structural optimization design of EPS inductor anti-vibration failure, which is conducive to providing a more challenging structural optimization adjustment result for the subsequent structural adjustment optimization design of the EPS steering system.

[0079] In one embodiment, the middle position of the frame crossbeam is used as the knocking point, and the step S4: according to the vibration test results of EPS test benches with different structures under transient impact conditions, the EPS test bench with the best structural design under transient impact is determined, and the EPS steering system in the whole vehicle is improved and designed accordingly, specifically including the following steps:

[0080] Step S41: Analysis and comparison are as follows:

[0081] Vibration test results of the middle position of the frame crossbeam, EPS shell and EPS inductor on the original EPS test bench, and the vibration amplification factor of the knocking point;

[0082] Vibration test results of the middle position of the frame crossbeam, EPS shell and EPS inductor on the EPS test bench designed for different EPS installation methods, and the vibration amplification factor of the knocking point; and,

[0083] The vibration test results of the middle position of the frame beam, the EPS shell and the EPS inductor of the EPS test bench with different inductor structural strength adjustment designs, as well as the vibration amplification factor of the knocking point, determine the EPS test bench with the best structural design under transient impact;

[0084] Determine the EPS test bench with the best structural design under transient impact;

[0085] Step S42: Perform corresponding structural improvement design on the EPS steering system in the whole vehicle according to the EPS test bench with the best structural design.

[0086] In one embodiment, the middle position of the frame crossbeam is used as the knocking point. In step S41, the vibration test results of the inductance on various EPS test benches are used as the highest level comparison object. When the vibration test results of the inductance on various EPS test benches are the same, the vibration amplification factor is used as the second level comparison object. When the vibration test results of the inductance on various EPS test benches are the same, the vibration test results of the EPS shell are used as the third level comparison object. By means of multi-level comparison, the EPS test bench with the best structural design is screened and determined.

[0087] In a specific embodiment, the vibration test results of the middle position of the frame beam, the EPS shell and the EPS inductor on the original EPS test bench, the EPS test bench with different EPS installation adjustment designs, and the EPS test bench with different inductor structure strength adjustment designs, as well as the vibration amplification coefficient of the knocking point are tested.

[0088] from Figure 5 It can be seen that by comparing the frequency response function curves from the tapping point to the inductance after optimization, changing the installation method B and changing the inductance structure C both have obvious optimization effects.

[0089] Table 1 Vibration test results of the middle position of the frame beam, EPS shell and EPS inductor on the EPS test bench with different structures and the vibration amplification factor of the knocking point

[0090]

[0091] It can be seen from Table 1 that the EPS installation method and the optimization of the inductor structure have a significant optimization effect on the vibration of the inductor under transient impact.

[0092] Combination Figure 5 As can be seen from Table 1, the structural design of the EPS test bench in which the EPS is changed to a vertical installation is the optimal structural design under transient impact.

[0093] In a second aspect, the present application provides a steering control system for reducing EPS inductive vibration under transient impact, comprising:

[0094] The original structure building module is used to simulate the whole vehicle installation method to build the original EPS test bench;

[0095] An adjustment structure building module is connected to the original structure building module for making different structural design changes and building EPS test benches with different structural adjustment designs based on the original EPS test bench as the structural design adjustment basis;

[0096] A test result acquisition module is used to perform transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs, and obtain vibration test results of the EPS test benches with different structures under transient impact conditions;

[0097] The optimal structure determination module is communicated with the test result acquisition module, and is used to determine the EPS test bench with the best structural design under transient impact according to the vibration test results of EPS test benches with different structures under transient impact conditions, and to perform corresponding structural improvement design on the EPS steering system in the whole vehicle.

[0098] In one embodiment, the adjustment structure building module includes:

[0099] The structural construction unit for adjusting the installation mode is communicatively connected with the original structural construction module, and is used to change the EPS installation mode in the original EPS test bench, and to build an EPS test bench with different EPS installation mode adjustment designs;

[0100] The structural building unit for adjusting the inductance structure strength is communicated with the original structure building module and is used to change the structural strength of the inductance in the original EPS test bench and build EPS test benches with different inductance structure strength adjustment designs.

[0101] On the third aspect, an embodiment of the present application provides a steering control device for reducing EPS inductive vibration under transient impact. The steering control device for reducing EPS inductive vibration under transient impact can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0102] The communication interface includes an input / output (I / O) interface, a physical interface, and a logical interface, etc., which are used to interconnect the components inside the steering control device for reducing EPS inductive vibration under transient impact, and an interface for interconnecting the steering control device for reducing EPS inductive vibration under transient impact with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0103] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0104] The processor may be a general-purpose processor, which may call a steering control program for reducing EPS inductive vibration under transient impact stored in a memory, and execute a steering control method for reducing EPS inductive vibration under transient impact provided in an embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the steering control program for reducing EPS inductive vibration under transient impact is called may refer to the various embodiments of the steering control method for reducing EPS inductive vibration under transient impact of the present application, which will not be described in detail here.

[0105] In a fourth aspect, an embodiment of the present application also provides a readable storage medium.

[0106] The readable storage medium of the present application stores a steering control program for reducing EPS inductive vibration under transient impact, wherein when the steering control program for reducing EPS inductive vibration under transient impact is executed by a processor, the steps of the steering control method for reducing EPS inductive vibration under transient impact as described above are implemented.

[0107] Among them, the method implemented when the steering control program for reducing EPS inductive vibration under transient impact is executed can refer to the various embodiments of the steering control method for reducing EPS inductive vibration under transient impact of the present application, and will not be repeated here.

[0108] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0110] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A steering control method for reducing EPS inductance vibration under transient impact, characterized in that: The following steps are involved: Simulate the whole vehicle installation method to build the original EPS test bench; Taking the original EPS test bench as the basis for structural design adjustment, different structural design changes are made to build EPS test benches with different structural adjustment designs; Transient impact simulation tests were performed on the original EPS test bench and the EPS test benches with different structural adjustments and designs, respectively, to obtain vibration test results of the EPS test benches with different structures under transient impact conditions; According to the vibration test results of EPS test benches with different structures under transient impact conditions, the EPS test bench with the best structural design under transient impact is determined, and the corresponding structural improvement design of the EPS steering system in the whole vehicle is carried out.

2. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 1, characterized in that: The EPS test bench in the original state is used as the structural design adjustment basis, and different structural design changes are made to build EPS test benches with different structural adjustment designs, which specifically includes the following steps: Change the EPS installation method in the original EPS test bench, and build an EPS test bench with different EPS installation methods; The structural strength of the inductor in the original EPS test bench is changed, and an EPS test bench with different inductor structural strength adjustment designs is built.

3. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 2, characterized in that: The method of changing the EPS installation mode in the original EPS test bench and building an EPS test bench with different EPS installation modes and adjustment designs specifically includes the following steps: Install the EPS transversely on the frame crossbeam and build an EPS test bench with EPS transversely installed; Install the EPS vertically on the frame crossbar and build an EPS test bench with the EPS vertically installed.

4. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 2, characterized in that: The method of changing the structural strength of the inductor in the original EPS test bench and building an EPS test bench with different inductor structural strength adjustment designs specifically includes the following steps: The convex bulge on the terminal of the lapped inductor in the original EPS test bench is removed, and the terminal of the lapped inductor is adjusted to be reversed, so as to build an EPS test bench with an adjusted inductor structure strength design.

5. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 1, characterized in that: The method of performing transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs respectively, and obtaining vibration test results of the EPS test benches with different structures under transient impact conditions, specifically includes the following steps: Vibration sensors are arranged at multiple points on the original EPS test bench and the EPS test benches with different structural adjustments and designs; Taking the middle position of the frame crossbeam as the transient impact input point, transient impact simulation tests were carried out on the original EPS test bench with multi-point vibration sensors and the EPS test bench with different structural adjustment designs, and the vibration test results of EPS test benches with different structures under transient impact conditions were obtained.

6. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 5, characterized in that: The EPS test bench in the original state and the EPS test bench with different structural adjustment designs respectively arrange vibration sensors at multiple points, specifically including the following steps: Vibration sensors are arranged respectively on the middle position of the frame crossbeam, the EPS shell and the inductor of the original EPS test bench and the EPS test bench with different structural adjustment designs.

7. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 5, characterized in that: The method takes the middle position of the frame crossbeam as the transient impact input point, performs transient impact simulation tests on the original EPS test bench with multiple-point vibration sensors and the EPS test benches with different structural adjustment designs, and obtains vibration test results of the EPS test benches with different structures under transient impact conditions, specifically including the following steps: Taking the middle position of the frame crossbeam as the transient impact input point, hammer tests were carried out on the original EPS test bench with multi-point vibration sensors and the EPS test benches with different structural adjustment designs to obtain the vibration test results of EPS test benches with different structures under transient impact conditions.

8. The steering control method for reducing EPS inductance vibration under transient impact as claimed in claim 7, characterized in that: The hammering tool used in the hammer test is an iron hammer or a rubber hammer.

9. A steering control system for reducing EPS inductance vibration under transient impact, characterized in that: include: The original structure building module is used to simulate the whole vehicle installation method to build the original EPS test bench; An adjustment structure building module is connected to the original structure building module for making different structural design changes and building EPS test benches with different structural adjustment designs based on the original EPS test bench as the structural design adjustment basis; A test result acquisition module is used to perform transient impact simulation tests on the original EPS test bench and the EPS test benches with different structural adjustment designs, and obtain vibration test results of the EPS test benches with different structures under transient impact conditions; The optimal structure determination module is communicated with the test result acquisition module, and is used to determine the EPS test bench with the best structural design under transient impact according to the vibration test results of EPS test benches with different structures under transient impact conditions, and to perform corresponding structural improvement design on the EPS steering system in the whole vehicle.

10. The steering control system for reducing EPS inductive vibration under transient impact as claimed in claim 9, characterized in that: The adjustment structure building module includes: The structural construction unit for adjusting the installation mode is communicatively connected with the original structural construction module, and is used to change the EPS installation mode in the original EPS test bench, and to build an EPS test bench with different EPS installation mode adjustment designs; The structural building unit for adjusting the inductance structure strength is communicated with the original structure building module and is used to change the structural strength of the inductance in the original EPS test bench and build EPS test benches with different inductance structure strength adjustment designs.

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