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CN-122009138-A - Active suspension control method and device, vehicle and storage medium

CN122009138ACN 122009138 ACN122009138 ACN 122009138ACN-122009138-A

Abstract

The application relates to an active suspension control method, a device, a vehicle and a storage medium, wherein the method is characterized in that a current in-vehicle vibration noise comprehensive representation value is determined according to the current power generation of a range extender, the current rotating speed and a preset mathematical model, then a plurality of main order values of a currently acquired range extender engine are sequenced according to the size to obtain a main order value sequence, so that a target channel which needs to be opened can be determined from all channels of the active suspension according to the in-vehicle vibration noise comprehensive representation value, the main order value sequence and preset judging conditions, the active suspension is finely controlled, the transmission of vibration excitation generated during the working of the range extender to the vehicle body can be effectively restrained, the NVH performance in the vehicle in a range extender mode is improved, the non-sensing of the NVH in the vehicle in different modes of the range extender mode is ensured, the driving comfort and the experience of the range extender are improved, all channels of the active suspension are not required to be opened under all working conditions of the range extender mode, and the effects of energy conservation and consumption reduction are realized.

Inventors

  • WANG HENG
  • YAN FUWU

Assignees

  • 赛力斯汽车有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. An active suspension control method, the method comprising: acquiring the current power generation power and the current rotating speed of the range extender; determining a current comprehensive representation value of the vibration noise in the vehicle according to the current power generation power, the current rotating speed and a preset mathematical model, wherein the mathematical model is used for representing the corresponding relation between the power generation power and the rotating speed of the range extender and the comprehensive representation value of the vibration noise in the vehicle; sequencing a plurality of main order values of the currently acquired range extender engine according to the size to obtain a main order value sequence; Determining an actively-suspended opened target channel according to the comprehensive representation value of the vibration noise in the vehicle, the main order value sequence and preset judging conditions, wherein the preset judging conditions comprise threshold values for opening all channels; and performing active suspension control according to the target channel.
  2. 2. The method of claim 1, wherein prior to determining a current vehicle vibration noise composite performance value based on the current generated power, the current rotational speed, and a preset mathematical model, the method further comprises obtaining the mathematical model; Wherein, the generation process of the mathematical model comprises the following steps: Acquiring multiple groups of original data of the range extender measured under different power generation working conditions, wherein the original data comprise noise data and vibration data; The original data is processed by determining an in-vehicle noise comprehensive value according to the noise data under the target power generation working conditions, determining a vibration comprehensive value according to the vibration data, and determining an in-vehicle vibration noise comprehensive representation value according to the in-vehicle noise comprehensive value and the vibration comprehensive value for any one of the different power generation working conditions.
  3. 3. The method of claim 2, wherein determining an in-vehicle noise composite value from the noise data for the target power generation condition, and determining a vibration composite value from the vibration data, comprises: The noise comprehensive value in the vehicle is determined according to the main driving right ear noise data, the rear left passenger right ear noise data and the preset noise weight coefficient in a weighting manner, wherein the preset noise weight coefficient is used for representing weights occupied by the main driving right ear noise data and the rear left passenger right ear noise data; And determining the vibration comprehensive value according to the initial main driving seat guide rail vibration data, the initial steering wheel vibration data and a preset vibration weight coefficient in a weighting manner, wherein the preset vibration weight coefficient is used for representing the weight occupied by the initial main driving seat guide rail vibration data and the initial steering wheel vibration data.
  4. 4. The method of claim 3, wherein determining the vibration composite value based on the initial primary drive seat rail vibration data, the initial steering wheel vibration data, and the preset vibration weight coefficient weighting comprises: determining and correcting the vibration data of the main driving seat guide rail according to the vibration data of the initial main driving seat guide rail and the first amplification factor; Determining correction steering wheel vibration data according to the initial steering wheel vibration data and a second amplification factor, wherein the first amplification factor and the second amplification factor are used for converting the vibration data into the same order of magnitude as noise data; And determining the vibration comprehensive value according to the vibration data of the guide rail of the corrected main driving seat, the vibration data of the corrected steering wheel and the preset vibration weight coefficient in a weighting manner.
  5. 5. The method of claim 1, wherein sorting the plurality of currently acquired primary order values of the range extender engine by size results in a sequence of primary order values, comprising: acquiring a plurality of main order values of a current range extender engine; and sequencing the plurality of main order values according to the size to obtain a main order value sequence.
  6. 6. The method of claim 1, wherein determining the active suspension-enabled target channel based on the vehicle interior vibration noise composite representation value, the primary order value sequence, and a preset decision condition comprises: Acquiring a preset judging condition; And comparing the comprehensive representation value of the vibration noise in the vehicle with a threshold value in the preset judging condition, and determining a target channel for active suspension opening from the main order value sequence according to a comparison result.
  7. 7. The method of claim 6, wherein the predetermined decision condition includes a first threshold, a second threshold, a third threshold, and a fourth threshold arranged from small to large, the sequence of primary values includes a first primary order, a second primary order, a third primary order, and a fourth primary order arranged from large to small according to primary order values, and the comparing the integrated in-vehicle vibration noise representation value with the threshold in the predetermined decision condition, and determining the active suspension open target channel from the sequence of primary values according to the comparison result includes: Comparing the in-vehicle vibration noise integrated representation value with the first threshold, the second threshold, the third threshold, and the fourth threshold; If the integrated value of the vibration noise in the vehicle is smaller than the first threshold value, the active suspension does not need to be started; If the integrated value of the vibration noise in the vehicle is larger than or equal to the first threshold value and smaller than the second threshold value, determining a target channel as the first main order; If the integrated value of the vibration noise in the vehicle is larger than or equal to the second threshold value and smaller than the third threshold value, determining that the target channel is the first main order and the second main order; if the integrated value of the vibration noise in the vehicle is larger than or equal to the third threshold value and smaller than the fourth threshold value, determining that the target channel is the first main order, the second main order and the third main order; And if the integrated value of the vibration noise in the vehicle is larger than or equal to the fourth threshold value, determining that the target channel is the first main order, the second main order, the third main order and the fourth main order.
  8. 8. An active suspension control device, the device comprising: The acquisition module is used for acquiring the current power generation power and the current rotating speed of the range extender; The first determining module is used for determining a current in-vehicle vibration noise comprehensive representation value according to the current power generation power, the current rotating speed and a preset mathematical model, wherein the mathematical model is used for representing the corresponding relation between the power generation power and the rotating speed of the range extender and the in-vehicle vibration noise comprehensive representation value; The sequencing module is used for sequencing the plurality of main order values of the currently acquired range extender engine according to the size to obtain a main order value sequence; The second determining module is used for determining an active suspension opened target channel according to the comprehensive representation value of the vibration noise in the vehicle, the main order value sequence and preset judging conditions, wherein the preset judging conditions comprise threshold values for opening all channels; And the control module is used for performing active suspension control according to the target channel.
  9. 9. The vehicle is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; a memory for storing a computer program; A processor for implementing the active suspension control method of any one of claims 1-7 when executing a program stored on a memory.
  10. 10. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the active suspension control method of any of claims 1-7.

Description

Active suspension control method and device, vehicle and storage medium Technical Field The present application relates to the field of automotive technologies, and in particular, to an active suspension control method, an active suspension control device, a vehicle, and a storage medium. Background With the continuous development of automobile technology, new energy automobiles (mainly including pure electric automobiles, hybrid electric automobiles, range-extended automobiles and fuel cell automobiles) are increasingly high in proportion. The battery technology and the charging pile of the pure electric vehicle are limited, the problems of short endurance and difficult charging exist, the power system of the hybrid electric vehicle is complex, the cost of purchasing and maintaining is high, the energy efficiency of the fuel cell vehicle is low, and the fuel supply station is less, so that the further development of the fuel cell vehicle is limited. The range-extended vehicle type can be powered by oil, can run purely in urban areas, can run at high speed by oiling, has no endurance mileage anxiety, also has the vehicle cost, and becomes the main stream development of the current market. For the range-extending automobile, the automobile is driven by a driving motor, the engine does not directly participate in driving, and the range-extending automobile mainly has two working modes, namely one is that when the battery power is high, the automobile provides electric energy for the driving motor by means of a battery pack to drive the automobile to run, and is usually called a pure electric mode, and the other is that when the battery pack power is low, a range extender (comprising the engine, a generator and a controller) starts to generate electricity, so that the automobile is provided for the driving motor to drive the automobile to run or generate electricity for the battery pack, and is usually called a range-extending mode, so that the range-extending automobile can be continuously switched between the pure electric mode and the range-extending mode along with the change of the battery pack power of the automobile. In the pure mode, the range extender does not work, NVH (Noise, vibration, harshness, noise, vibration and harshness) performance in the vehicle is good, and in the range extender mode, the range extender is started, and an excitation source of vibration noise on the vehicle is increased, so that NVH in the vehicle is deteriorated. Therefore, how to reduce the NVH level in the vehicle in the range-extending mode, so that the two modes can be switched without perception, becomes a problem to be solved in the range-extending vehicle. Disclosure of Invention The application provides an active suspension control method, an active suspension control device, a vehicle and a storage medium, which are used for solving the technical problem of how to reduce the NVH level in the vehicle in a range-extending mode and enable the range-extending mode and a pure electric mode to be switched without sense. In a first aspect, the present application provides an active suspension control method, the method comprising: acquiring the current power generation power and the current rotating speed of the range extender; determining a current comprehensive representation value of the vibration noise in the vehicle according to the current power generation power, the current rotating speed and a preset mathematical model, wherein the mathematical model is used for representing the corresponding relation between the power generation power and the rotating speed of the range extender and the comprehensive representation value of the vibration noise in the vehicle; sequencing a plurality of main order values of the currently acquired range extender engine according to the size to obtain a main order value sequence; Determining an actively-suspended opened target channel according to the comprehensive representation value of the vibration noise in the vehicle, the main order value sequence and preset judging conditions, wherein the preset judging conditions comprise threshold values for opening all channels; and performing active suspension control according to the target channel. Optionally, before determining the current comprehensive expression value of the vibration noise in the vehicle according to the current power generation, the current rotation speed and a preset mathematical model, the method further comprises the steps of obtaining the mathematical model; Wherein, the generation process of the mathematical model comprises the following steps: Acquiring multiple groups of original data of the range extender measured under different power generation working conditions, wherein the original data comprise noise data and vibration data; The original data is processed by determining an in-vehicle noise comprehensive value according to the noise data under the target power generation working conditions, determinin