Automobile steering wheel vibration optimization method, device, equipment and storage medium

Abstract

The present invention belongs to the technical field of NVH control of hybrid electric vehicles, and discloses a method, device, equipment and storage medium for optimizing the vibration of a vehicle steering wheel. When the vehicle is in an idle or low-speed series power generation condition, the present invention reads the control parameters of the vehicle, determines the engine speed compensation strategy according to the ambient temperature, obtains the target speed and target compensation duration according to the engine speed compensation strategy, and adjusts the engine speed, so that when the vehicle is in an idle or low-speed series power generation condition, the target speed and target compensation duration of the engine are determined by the control parameters. Compared with hybrid vehicles in cold areas where the engine speed is not adjusted according to the ambient temperature during idle series power generation or low-speed series power generation, the vibration isolation performance of the suspension system is reduced, resulting in steering wheel vibration, the present invention can adjust the engine speed, ensure that the suspension system is in a better vibration isolation range, reduce the transmission of the engine excitation energy to the vehicle body side, and reduce the vibration of the steering wheel.

Description

Technical Field

[0001] The present invention relates to the field of NVH control technology for a hybrid electric vehicle, and in particular to a method, device, equipment and storage medium for optimizing the vibration of an automobile steering wheel. Background Art

[0002] In order to improve the driving comfort of hybrid vehicles at idle speed and low-speed series power generation, the engine speed is usually selected to be lower while meeting the required power. Under normal temperature conditions, the NVH (Noise, Vibration, Harshness) performance can be guaranteed in engine idle speed and low-speed heavy-load series power generation conditions. However, in cold areas, after the vehicle has been immersed in the vehicle for a certain period of time, the vibration isolation performance of the powertrain suspension assembly will be significantly reduced, and the engine vibration will be transmitted to the side of the vehicle body through the suspension, causing the steering wheel to shake. For hybrid vehicles in the feeding state, in order to ensure large loads such as backup power and PTC, the engine idle speed and low-speed series power generation conditions need to be greater than the load power. At this time, the engine excitation energy is large and the engine speed remains unchanged or increases slightly, which will cause the ratio of the engine excitation frequency to the natural frequency of the suspension system to become smaller, the vibration isolation performance of the suspension system will deteriorate, and the steering wheel will shake more, affecting driving comfort.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a method, device, equipment and storage medium for optimizing automobile steering wheel vibration, aiming to solve the technical problem that the engine speed of hybrid vehicles in the prior art is not adjusted according to the ambient temperature when idling in series or generating electricity at low vehicle speeds in cold areas, the vibration isolation performance of the suspension system is reduced, and the vehicle steering wheel vibrates greatly.

[0005] To achieve the above object, the present invention provides a method for optimizing the vibration of a vehicle steering wheel, the method comprising the following steps:

[0006] When the hybrid vehicle is in an idle or low-speed series power generation condition, reading control parameters of the hybrid vehicle, the control parameters including ambient temperature;

[0007] determining an engine speed compensation strategy according to the ambient temperature;

[0008] A target speed and a target compensation duration are obtained according to the engine speed compensation strategy, and the speed of the engine is adjusted based on the target speed and the target compensation duration.

[0009] Optionally, determining the engine speed compensation strategy according to the ambient temperature includes:

[0010] Determining the ambient temperature to obtain a temperature determination result;

[0011] When the ambient temperature is within a first temperature range, determining the engine speed compensation strategy to be a first speed compensation strategy;

[0012] When the ambient temperature is in the second temperature range, determining the engine speed compensation strategy to be a second speed compensation strategy;

[0013] When the ambient temperature is in a third temperature range, the engine speed compensation strategy is determined to be a third speed compensation strategy, wherein the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range.

[0014] Optionally, obtaining a target speed and a target compensation duration according to the engine speed compensation strategy, and adjusting the engine speed based on the target speed and the target compensation duration, includes:

[0015] When the engine speed compensation strategy is the first speed compensation strategy, obtaining the target speed and the first target compensation duration;

[0016] When the engine speed compensation strategy is the second speed compensation strategy, obtaining the target speed and the second target compensation time;

[0017] When the engine speed compensation strategy is the third speed compensation strategy, the target speed and the third target compensation time are obtained, wherein the first target compensation time is less than the second target compensation time, and the second target compensation time is less than the third target compensation time;

[0018] adjusting the speed of the engine based on the target speed and the target compensation time;

[0019] Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

[0020] Optionally, the control parameter further includes a series power generation condition, and the judging of the ambient temperature, before obtaining the temperature judgment result, further includes:

[0021] Judging the series power generation operating condition to determine the current power generation state;

[0022] When the power generation state is a speed compensation state, obtaining the current ambient temperature;

[0023] The current ambient temperature is judged to obtain a temperature judgment result.

[0024] Optionally, the control parameter further includes engine water temperature, and before judging the series power generation operating condition and determining the current power generation state, the following is further included:

[0025] Detecting the engine water temperature to obtain a water temperature detection result;

[0026] When the water temperature detection result is the speed compensation water temperature, obtaining the current series power generation condition, judging the series power generation condition, and determining the current power generation state;

[0027] Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

[0028] Optionally, the control parameter further includes the engine speed, and before the engine water temperature is detected and the water temperature detection result is obtained, the following steps are further included:

[0029] detecting the engine speed, and obtaining the engine water temperature when the engine speed is lower than the speed compensation speed;

[0030] Detecting the engine water temperature to obtain a water temperature detection result;

[0031] Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

[0032] Optionally, obtaining the actual working condition of the current vehicle according to the current control parameters, obtaining a preset series power generation strategy according to the actual working condition, and controlling the engine to generate power based on the preset series power generation strategy includes:

[0033] Determining a current actual operating condition of the vehicle;

[0034] Searching a preset series power generation strategy corresponding table according to the current actual working condition to obtain a preset series power generation strategy matching the current actual working condition;

[0035] According to the engine target parameters corresponding to the preset series power generation strategy;

[0036] The engine is controlled to generate electricity based on the engine target parameter.

[0037] In addition, to achieve the above-mentioned purpose, the present invention also proposes a vehicle steering wheel jitter optimization device, the vehicle steering wheel jitter optimization device comprising:

[0038] A parameter reading module, used for reading control parameters of the hybrid vehicle when the hybrid vehicle is in an idle or low-speed series power generation condition, wherein the control parameters include an ambient temperature;

[0039] A strategy determination module, used for determining an engine speed compensation strategy according to the ambient temperature;

[0040] The speed adjustment module is used to obtain a target speed and a target compensation duration according to the engine speed compensation strategy, and adjust the speed of the engine based on the target speed and the target compensation duration.

[0041] In addition, to achieve the above-mentioned purpose, the present invention also proposes a car steering wheel jitter optimization device, which includes: a memory, a processor, and a car steering wheel jitter optimization program stored in the memory and runnable on the processor, and the car steering wheel jitter optimization program is configured to implement the steps of the car steering wheel jitter optimization method described above.

[0042] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which a car steering wheel jitter optimization program is stored. When the car steering wheel jitter optimization program is executed by a processor, the steps of the car steering wheel jitter optimization method described above are implemented.

[0043] The present invention reads control parameters of a hybrid vehicle when the hybrid vehicle is in an idling or low-speed series power generation condition, the control parameters including the ambient temperature, determines an engine speed compensation strategy based on the ambient temperature, obtains a target speed and a target compensation duration based on the engine speed compensation strategy, and adjusts the engine speed based on the target speed and the target compensation duration, thereby achieving the goal of determining the target parameters and the target compensation duration for controlling the engine based on the control parameters of the hybrid vehicle when the vehicle is idling or at a low speed. Unlike the prior art in which the engine cannot adjust the engine speed based on the load, resulting in unstable engine operation and engine jitter, the present invention can adjust the engine speed based on the control parameters of the hybrid vehicle to ensure engine stability, thereby reducing steering wheel jitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of a vehicle steering wheel vibration optimization device in a hardware operating environment involved in an embodiment of the present invention;

[0045] Figure 2 It is a flow chart of the first embodiment of the method for optimizing the vehicle steering wheel vibration of the present invention;

[0046] Figure 3 A schematic diagram of a flow chart of a second embodiment of a method for optimizing vehicle steering wheel vibration according to the present invention;

[0047] Figure 4 A schematic diagram of a steering wheel vibration control flow chart of an embodiment of a method for optimizing automobile steering wheel vibration of the present invention;

[0048] Figure 5 This is a structural block diagram of the first embodiment of the vehicle steering wheel vibration optimization device of the present invention.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0051] Reference Figure 1 , Figure 1 The present invention is a schematic diagram of the structure of a vehicle steering wheel vibration optimization device in the hardware operating environment involved in the embodiment of the present invention.

[0052] like Figure 1 As shown, the car steering wheel vibration optimization device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0053] Those skilled in the art will understand that Figure 1 The structure shown in does not constitute a limitation on the automobile steering wheel vibration optimization device, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0054] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a car steering wheel vibration optimization program.

[0055] exist Figure 1 In the car steering wheel jitter optimization device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the car steering wheel jitter optimization device of the present invention can be set in the car steering wheel jitter optimization device, and the car steering wheel jitter optimization device calls the car steering wheel jitter optimization program stored in the memory 1005 through the processor 1001, and executes the car steering wheel jitter optimization method provided by the embodiment of the present invention.

[0056] The embodiment of the present invention provides a method for optimizing the vibration of a vehicle steering wheel. Figure 2 , Figure 2 The figure is a flow chart of a first embodiment of a method for optimizing vehicle steering wheel vibration according to the present invention.

[0057] In this embodiment, the automobile steering wheel vibration optimization method comprises the following steps:

[0058] Step S10: When the hybrid vehicle is in an idling or low-speed series power generation condition, read the control parameters of the hybrid vehicle, wherein the control parameters include the ambient temperature.

[0059] It should be noted that the executor of this embodiment is a car steering wheel jitter optimization device, wherein the car steering wheel jitter optimization device has functions such as data processing, data communication and program running. The car steering wheel jitter optimization device can be an integrated controller, a control computer and other devices. Of course, it can also be other devices with similar functions, and this embodiment does not limit this.

[0060] It is understandable that hybrid vehicles use the engine to generate power to start the generator in the vehicle, and the generator then provides power to the entire vehicle. During the operation of the vehicle, when the load power of the vehicle increases, the consumption of the power battery will increase. The remaining power of the power battery will decrease and return to the generator to increase the power generation power, thereby increasing the output power of the engine. The increase in the output power of the engine will inevitably lead to an increase in the engine speed, thereby destroying the current engine's operating steady state and causing the engine to shake. The generated vibration will in turn produce corresponding vibrations with the assembly suspension system, ultimately causing the vehicle steering wheel to shake.

[0061] It should be noted that in order to improve the driving comfort of hybrid vehicles at idle speed and low-speed series power generation, the engine speed is usually selected to be lower while meeting the required power. At normal temperature, the NVH performance of the engine at idle speed and low-speed heavy-load series power generation can be guaranteed. However, in cold areas, after the vehicle has been immersed in the vehicle for a certain period of time, the vibration isolation performance of the powertrain suspension system will drop significantly, and the engine vibration will be transmitted to the entire vehicle through the suspension, causing the steering wheel to shake. For hybrid vehicles in the feeding state, in order to ensure large loads such as backup power and PTC, the engine idle speed and low-speed series power generation condition power needs to be greater than the load power. At this time, the engine excitation energy is large and the engine speed remains unchanged or increases slightly, which will cause the ratio of the engine excitation frequency to the natural frequency of the suspension system to become smaller, the vibration isolation performance of the suspension system will deteriorate, and the steering wheel will shake more.

[0062] It should be understood that when the vehicle is idling or at a low speed, the energy consumed by the vehicle to provide kinetic energy is relatively less. When the vehicle is idling or at a low speed, the load of the vehicle will increase as other loads on the vehicle increase, resulting in a significant increase in the power demand of the vehicle. Therefore, in order to ensure the required power, hybrid vehicles will increase the output power of the engine.

[0063] In the specific implementation, when the hybrid vehicle is in idle or low-speed series power generation conditions, the vehicle controller VCU can read the control parameters of the hybrid vehicle, where the control parameters may include parameters such as ambient temperature, and estimate the load demand of the hybrid vehicle in the current environment based on the current ambient temperature, and then determine what compensation strategy needs to be used to offset this part of the extra load to achieve the purpose of maintaining engine stability.

[0064] Step S20: determining an engine speed compensation strategy according to the ambient temperature.

[0065] It should be noted that different ambient temperatures will lead to different increases in vehicle demand. When matching ambient temperatures with engine speed compensation strategies, the ambient temperature can be divided into different temperature ranges. Different speed compensation strategies can be selected according to the temperature ranges in which the ambient temperature is located. The difference between multiple speed compensation strategies is reflected in the compensation duration. Different ambient temperatures within the same temperature range correspond to the same speed compensation strategy.

[0066] Step S30: obtaining a target speed and a target compensation duration according to the engine speed compensation strategy, and adjusting the engine speed based on the target speed and the target compensation duration.

[0067] In the specific implementation, the engine speed compensation strategy is analyzed, the target speed and target compensation duration included in the engine speed compensation strategy are determined, and the engine speed is adjusted based on the target speed and target compensation duration. When adjusting the speed, the vehicle controller VCU first needs to obtain the current engine speed of the vehicle, and subtract the current engine speed from the target engine speed to obtain the speed that needs to be adjusted. When calculating, the target speed is subtracted from the current engine speed. At this time, when the result is a negative number, it can be obtained that the engine speed needs to be increased, and the increase value is the absolute value of the difference between the two speeds. Similarly, when the result is an integer, it can be obtained that the engine speed needs to be reduced, and the reduction value is the absolute value of the difference between the two speeds. The engine speed is adjusted according to the calculated engine speed that needs to be increased / reduced and the compensation duration under the current strategy.

[0068] This embodiment reads control parameters of the hybrid vehicle when the hybrid vehicle is in an idling or low-speed series power generation condition, the control parameters including the ambient temperature, determines an engine speed compensation strategy based on the ambient temperature, obtains a target speed and a target compensation duration based on the engine speed compensation strategy, and adjusts the engine speed based on the target speed and the target compensation duration, so as to achieve the goal of determining the target parameters and the target compensation duration for controlling the engine based on the control parameters of the hybrid vehicle when the vehicle is idling or at a low speed. Unlike the prior art in which the engine cannot adjust the engine speed according to the load, resulting in unstable engine operation and engine jitter, the present invention can adjust the engine speed according to the control parameters of the hybrid vehicle to ensure engine stability, thereby reducing steering wheel jitter.

[0069] refer to Figure 3 , Figure 3 The figure is a flow chart of a second embodiment of a method for optimizing vehicle steering wheel vibration according to the present invention.

[0070] Based on the first embodiment, the vehicle steering wheel vibration optimization method of this embodiment further includes, in step S30:

[0071] Step S301: when the engine speed compensation strategy is the first speed compensation strategy, obtaining the target speed and the first target compensation time;

[0072] Step S302: when the engine speed compensation strategy is the second speed compensation strategy, obtaining the target speed and the second target compensation time;

[0073] Step S303: When the engine speed compensation strategy is the third speed compensation strategy, obtain the target speed and the third target compensation duration, where the first target compensation duration is less than the second target compensation duration, and the second target compensation duration is less than the third target compensation duration;

[0074] Step S304: Adjust the speed of the engine based on the target speed and the target compensation duration;

[0075] Step S305: Otherwise, obtain the actual working condition of the current vehicle according to the current control parameters, obtain a preset series power generation strategy according to the actual working condition, and control the engine to generate power based on the preset series power generation strategy.

[0076] In a specific implementation, there are three compensation strategies in the engine speed compensation strategy, namely the first speed compensation strategy, the second speed compensation strategy, and the third speed compensation strategy, which respectively correspond to the engine speed compensation methods in three temperature ranges. Refer to Figure 4 , Figure 4 for the schematic diagram of the steering wheel jitter control flowchart. Among the above three speed compensation strategies, there are corresponding target speeds and target compensation durations respectively. Among different compensation strategies, the corresponding target speeds are the same, all being EngSpd_Targ; the difference is that there are differences in the compensation durations. The relationship of the target compensation time is that the first target compensation duration is less than the second target compensation duration, and the second target compensation duration is less than the third target compensation duration, that is, T1 < T2 < T3, where T1, T2, and T3 respectively represent the first target compensation duration, the second target compensation duration, and the third target compensation duration.

[0077] Refer to Figure 4 , in Figure 4It can be seen from the corresponding flow chart that when the hybrid vehicle is in an idle or low-speed series power generation condition, the vehicle controller VCU can read the vehicle-related control parameters, wherein the control parameters include at least the current vehicle speed, engine speed, engine torque, engine water temperature, series power generation condition level, etc. in addition to the ambient temperature, and make a judgment based on the control parameters. The judgment process is: detect the engine speed, and when the engine speed is lower than the speed compensation speed, obtain the engine water temperature; detect the engine water temperature to obtain the water temperature detection result; otherwise, obtain the actual working condition of the current vehicle according to the current control parameters, and obtain the preset series power generation strategy according to the actual working condition, and control the engine power generation based on the preset series power generation strategy. Among them, the speed compensation speed is set according to the actual situation, preferably 15km / h, and this embodiment does not limit this. The vehicle VCU can determine whether the current vehicle speed is greater than 15km / h. At this time, if the vehicle speed is higher than 15km / h, the speed compensation of the transmitter is not performed. If the vehicle speed is lower than 15km / h, or even 0km / h, the engine speed compensation strategy is further determined according to the current engine water temperature.

[0078] The engine water temperature is judged, and the water temperature detection result is obtained according to the engine water temperature. When the water temperature detection result is the speed compensation water temperature, the current series power generation condition is obtained, and the series power generation condition is judged to determine the current power generation state. Otherwise, the actual working condition of the current vehicle is obtained according to the current control parameters, and the preset series power generation strategy is obtained according to the actual working condition, and the engine power generation is controlled based on the preset series power generation strategy. The engine compensation water temperature is preferably 0°C, which is not limited in this embodiment. When the engine water temperature is greater than 0°C, the VCU controls the engine to generate electricity according to the preset series power generation condition logic, and does not perform engine speed compensation. When it is judged that the engine water temperature is below 0°C, the VCU judges the current engine series power generation condition level and obtains the current power generation state. The power generation state includes three power generation states, namely, the first-order power generation state Level1 of the engine, the second-order power generation state Level2, and the third-order power generation state Level3, wherein Level1<Level2<Level3, and Level1 and Level2 are fixed-point power generation strategies. When the current power generation state of the generator is the third-order power generation state Level 3, the VCU controls the engine to generate power according to the preset series power generation operating condition logic, and does not perform engine speed compensation. When the current power generation state of the engine is the first-order power generation state Level 1 or the second-order power generation state Level 2, the vehicle controller VCU reads the ambient temperature, judges the ambient temperature, and compares the current ambient temperature with the ambient temperature range. The temperature ranges are respectively a first temperature range of -10℃<ambient temperature≤0℃, a second temperature range of -20℃<ambient temperature≤-10℃, and a third temperature range of ambient temperature≤-20℃. Among them, the first temperature range corresponds to the first speed compensation strategy in the engine speed compensation strategy, the second temperature range corresponds to the second speed compensation strategy in the engine speed compensation strategy, and the third temperature range corresponds to the third speed compensation strategy in the engine speed compensation strategy.

[0079] Further, obtaining the actual working condition of the current vehicle according to the current control parameters, obtaining a preset series power generation strategy according to the actual working condition, and controlling the engine to generate power based on the preset series power generation strategy include:

[0080] Determining a current actual operating condition of the vehicle;

[0081] Searching a preset series power generation strategy corresponding table according to the current actual working condition to obtain a preset series power generation strategy matching the current actual working condition;

[0082] According to the engine target parameters corresponding to the preset series power generation strategy;

[0083] The engine is controlled to generate electricity based on the engine target parameter.

[0084] In the specific implementation, when the current vehicle control parameters cannot perform speed compensation, the current actual working conditions can be determined based on the control parameters obtained by the vehicle VCU, and the corresponding power generation strategy can be searched in the preset series power generation strategy corresponding table according to the actual working conditions. The preset series power generation strategy corresponding edge is calibrated and stored on-site according to the NVH and engine control professionals according to the current vehicle model. According to the engine target parameters corresponding to the preset series power generation strategy, the engine is controlled to generate electricity according to the target parameters.

[0085] This embodiment determines the speed compensation strategy under the current actual working conditions according to the control parameters obtained by the vehicle VCU when the hybrid vehicle is in idle or low speed state, so that the engine speed can be adjusted to meet the current adjustment requirements, the vibration generated to the assembly suspension system can be reduced, and the steering wheel shaking problem can be further reduced.

[0086] In addition, an embodiment of the present invention further proposes a storage medium, on which a car steering wheel jitter optimization program is stored. When the car steering wheel jitter optimization program is executed by a processor, the steps of the car steering wheel jitter optimization method described above are implemented.

[0087] Reference Figure 5 , Figure 5 This is a structural block diagram of the first embodiment of the vehicle steering wheel vibration optimization device of the present invention.

[0088] like Figure 5 As shown, the vehicle steering wheel vibration optimization device proposed in the embodiment of the present invention includes:

[0089] A parameter reading module 10, used to read control parameters of the hybrid vehicle when the hybrid vehicle is in an idle or low-speed series power generation condition, wherein the control parameters include an ambient temperature;

[0090] A strategy determination module 20, configured to determine an engine speed compensation strategy according to the ambient temperature;

[0091] The speed adjustment module 30 is used to obtain a target speed and a target compensation duration according to the engine speed compensation strategy, and adjust the speed of the engine based on the target speed and the target compensation duration.

[0092] This embodiment reads control parameters of the hybrid vehicle when the hybrid vehicle is in an idling or low-speed series power generation condition, the control parameters including the ambient temperature, determines an engine speed compensation strategy based on the ambient temperature, obtains a target speed and a target compensation duration based on the engine speed compensation strategy, and adjusts the engine speed based on the target speed and the target compensation duration, so as to achieve the goal of determining the target parameters and the target compensation duration for controlling the engine based on the control parameters of the hybrid vehicle when the vehicle is idling or at a low speed. Unlike the prior art in which the engine cannot adjust the engine speed according to the load, resulting in unstable engine operation and engine jitter, the present invention can adjust the engine speed according to the control parameters of the hybrid vehicle to ensure engine stability, thereby reducing steering wheel jitter.

[0093] In one embodiment, the strategy determination module 20 is also used to judge the ambient temperature and obtain a temperature judgment result; when the ambient temperature is in the first temperature range, the engine speed compensation strategy is determined to be the first speed compensation strategy; when the ambient temperature is in the second temperature range, the engine speed compensation strategy is determined to be the second speed compensation strategy; when the ambient temperature is in the third temperature range, the engine speed compensation strategy is determined to be the third speed compensation strategy, wherein the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range.

[0094] In one embodiment, the strategy determination module 20 is further used to obtain the target speed and the first target compensation time when the engine speed compensation strategy is the first speed compensation strategy; obtain the target speed and the second target compensation time when the engine speed compensation strategy is the second speed compensation strategy; obtain the target speed and the third target compensation time when the engine speed compensation strategy is the third speed compensation strategy, wherein the first target compensation time is less than the second target compensation time, and the second target compensation time is less than the third target compensation time; adjust the speed of the engine based on the target speed and the target compensation time;

[0095] Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

[0096] In one embodiment, the strategy determination module 20 is also used to judge the series power generation condition to determine the current power generation state; when the power generation state is a speed compensation state, obtain the current ambient temperature; judge the current ambient temperature to obtain a temperature judgment result.

[0097] In one embodiment, the strategy determination module 20 is also used to detect the engine water temperature and obtain a water temperature detection result; when the water temperature detection result is the speed compensation water temperature, the current series power generation operating condition is obtained, and the series power generation operating condition is judged to determine the current power generation state; otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

[0098] In one embodiment, the strategy determination module 20 is also used to detect the engine speed, and when the engine speed is lower than the speed compensation speed, obtain the engine water temperature; detect the engine water temperature to obtain a water temperature detection result; otherwise, obtain the actual operating condition of the current vehicle according to the current control parameters, and obtain a preset series power generation strategy according to the actual operating condition, and control the engine power generation based on the preset series power generation strategy.

[0099] In one embodiment, the strategy determination module 20 is also used to determine the current actual operating condition of the vehicle; search the corresponding table of preset series power generation strategies according to the current actual operating condition to obtain a preset series power generation strategy that matches the current actual operating condition; and control the engine power generation based on the engine target parameters corresponding to the preset series power generation strategy.

[0100] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0101] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0102] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0103] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0104] 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.

[0105] 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 invention, 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 a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0106] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for optimizing automobile steering wheel vibration, characterized in that: The automobile steering wheel vibration optimization method comprises: When the hybrid vehicle is in an idle or low-speed series power generation condition, reading control parameters of the hybrid vehicle, the control parameters including ambient temperature; determining an engine speed compensation strategy according to the ambient temperature; Obtaining a target speed and a target compensation duration according to the engine speed compensation strategy, and adjusting the engine speed based on the target speed and the target compensation duration; Wherein, the determining of the engine speed compensation strategy according to the ambient temperature includes: Determining the ambient temperature to obtain a temperature determination result; When the ambient temperature is within a first temperature range, determining the engine speed compensation strategy to be a first speed compensation strategy; When the ambient temperature is in the second temperature range, determining the engine speed compensation strategy to be a second speed compensation strategy; When the ambient temperature is in a third temperature range, determining that the engine speed compensation strategy is a third speed compensation strategy, wherein the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range; The step of obtaining a target speed and a target compensation duration according to the engine speed compensation strategy, and adjusting the engine speed based on the target speed and the target compensation duration, includes: When the engine speed compensation strategy is the first speed compensation strategy, obtaining the target speed and the first target compensation duration; When the engine speed compensation strategy is the second speed compensation strategy, obtaining the target speed and the second target compensation time; When the engine speed compensation strategy is the third speed compensation strategy, the target speed and the third target compensation time are obtained, wherein the first target compensation time is less than the second target compensation time, and the second target compensation time is less than the third target compensation time; adjusting the speed of the engine based on the target speed and the target compensation time; Otherwise, the actual working condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual working condition, and the engine is controlled to generate power based on the preset series power generation strategy; The control parameters also include a series power generation condition, and the ambient temperature is judged, and before obtaining the temperature judgment result, the following is also included: Judging the series power generation operating condition to determine the current power generation state; When the power generation state is a speed compensation state, obtaining the current ambient temperature; The current ambient temperature is judged to obtain a temperature judgment result.

2. The method according to claim 1, characterized in that The control parameter also includes the engine water temperature. Before judging the series power generation working condition and determining the current power generation state, the following is also included: Detecting the engine water temperature to obtain a water temperature detection result; When the water temperature detection result is the speed compensation water temperature, obtaining the current series power generation condition, judging the series power generation condition, and determining the current power generation state; Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

3. The method according to claim 2, characterized in that The control parameter also includes the engine speed. Before the engine water temperature is detected and the water temperature detection result is obtained, the following steps are further included: detecting the engine speed, and obtaining the engine water temperature when the engine speed is lower than the speed compensation speed; Detecting the engine water temperature to obtain a water temperature detection result; Otherwise, the actual operating condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual operating condition, and the engine power generation is controlled based on the preset series power generation strategy.

4. The method according to any one of claims 1 to 3, characterized in that The method of obtaining the actual working condition of the current vehicle according to the current control parameters, obtaining a preset series power generation strategy according to the actual working condition, and controlling the engine to generate power based on the preset series power generation strategy includes: Determining a current actual operating condition of the vehicle; Searching a preset series power generation strategy corresponding table according to the current actual working condition to obtain a preset series power generation strategy matching the current actual working condition; According to the engine target parameters corresponding to the preset series power generation strategy; The engine is controlled to generate electricity based on the engine target parameter.

5. A vehicle steering wheel vibration optimization device, characterized in that: The automobile steering wheel vibration optimization device comprises: A parameter reading module, used for reading control parameters of the hybrid vehicle when the hybrid vehicle is in an idle or low-speed series power generation condition, wherein the control parameters include an ambient temperature; A strategy determination module, used for determining an engine speed compensation strategy according to the ambient temperature; A speed adjustment module, configured to obtain a target speed and a target compensation duration according to the engine speed compensation strategy, and adjust the speed of the engine based on the target speed and the target compensation duration; Wherein, the determining of the engine speed compensation strategy according to the ambient temperature includes: Determining the ambient temperature to obtain a temperature determination result; When the ambient temperature is within a first temperature range, determining the engine speed compensation strategy to be a first speed compensation strategy; When the ambient temperature is in the second temperature range, determining the engine speed compensation strategy to be a second speed compensation strategy; When the ambient temperature is in a third temperature range, determining that the engine speed compensation strategy is a third speed compensation strategy, wherein the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range; The step of obtaining a target speed and a target compensation duration according to the engine speed compensation strategy, and adjusting the engine speed based on the target speed and the target compensation duration, includes: When the engine speed compensation strategy is the first speed compensation strategy, obtaining the target speed and the first target compensation duration; When the engine speed compensation strategy is the second speed compensation strategy, obtaining the target speed and the second target compensation time; When the engine speed compensation strategy is the third speed compensation strategy, the target speed and the third target compensation time are obtained, wherein the first target compensation time is less than the second target compensation time, and the second target compensation time is less than the third target compensation time; adjusting the speed of the engine based on the target speed and the target compensation time; Otherwise, the actual working condition of the current vehicle is obtained according to the current control parameters, and a preset series power generation strategy is obtained according to the actual working condition, and the engine is controlled to generate power based on the preset series power generation strategy; The control parameters also include a series power generation condition, and the ambient temperature is judged, and before obtaining the temperature judgment result, the following is also included: Judging the series power generation operating condition to determine the current power generation state; When the power generation state is a speed compensation state, obtaining the current ambient temperature; The current ambient temperature is judged to obtain a temperature judgment result.

6. A vehicle steering wheel vibration optimization device, characterized in that: The device comprises: a memory, a processor and a car steering wheel jitter optimization program stored in the memory and executable on the processor, wherein the car steering wheel jitter optimization program is configured to implement the steps of the car steering wheel jitter optimization method as described in any one of claims 1 to 4.

7. A storage medium, characterized in that: The storage medium stores a car steering wheel jitter optimization program, and when the car steering wheel jitter optimization program is executed by the processor, the steps of the car steering wheel jitter optimization method as described in any one of claims 1 to 4 are implemented.

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