Human body protection active suspension system control method, device and equipment and storage medium

Abstract

The invention discloses a human body protection active suspension system control method, device and equipment and a storage medium, and the method comprises the steps: collecting vibration acceleration data of a vehicle body and an unsprung in real time after a human body protection function of a current vehicle is activated; converting the vibration acceleration into a vertical vibration frequency, and judging whether the vertical vibration frequency exceeds a preset vertical threshold value or not; when the vertical vibration frequency exceeds a preset vertical threshold value, the current of the active actuator is adjusted; the vehicle body vibration frequency can be effectively prevented from falling below the safety limit value, health risks caused by continuous exposure of pregnant women and other special groups to high-frequency vibration are avoided, it is ensured that the vibration environment in the driving process meets the human body tolerance standard, transmission of road surface vibration excitation is reduced through a calibration algorithm, the vehicle body vibration frequency is improved, and the driving safety is improved. The protection on the human body is enhanced, the human body is prevented from being exposed in a high-frequency vibration environment for a long time, and the control speed and efficiency of the active suspension system are improved.

Description

Technical Field

[0001] This invention relates to the field of vibration control technology for automotive active suspension systems, and in particular to a control method, device, equipment, and storage medium for an active suspension system for human safety protection. Background Technology

[0002] With the deepening of digital transformation, cybersecurity has become a core issue in enterprise operations, and access control, as a key link in ensuring the security of application systems, is of paramount importance. However, due to factors such as resource allocation and technological maturity, many enterprises have not yet established a sound access control system for their application systems. Even if some systems have deployed access control mechanisms, their technical means are still at the level of traditional rule-based control, such as application system customization based on static configuration methods such as IP whitelists and role permissions. This approach has limitations such as insufficient flexibility, slow response speed, and high development and maintenance costs.

[0003] Problems with existing technology: 1. Many application systems lack access control measures, resulting in significant security issues.

[0004] 2. Some application systems develop access control functions through customized development, which results in redundant investment, time and effort consumption, and low efficiency.

[0005] 3. Some application systems have relatively traditional access control methods with coarse control granularity, resulting in insufficient flexibility. Summary of the Invention

[0006] The main objective of this invention is to provide a human body protection active suspension system control method, device, equipment, and storage medium, aiming to solve the technical problem that existing active suspension control strategies do not consider human vibration exposure limit standards, resulting in health risks of excessive vibration acceleration for special groups such as pregnant women during driving.

[0007] In a first aspect, the present invention provides a control method for an active suspension system for human protection, the control method comprising the following steps: After the human safety protection function is activated in the current vehicle, the vibration acceleration data of the vehicle body and unsprung parts are collected in real time. The vibration acceleration is converted into a vertical vibration frequency, and it is determined whether the vertical vibration frequency exceeds a preset vertical threshold. When the vertical vibration frequency exceeds the preset vertical threshold, the current of the active actuator is adjusted.

[0008] Optionally, after the human safety protection function is activated in the current vehicle, the real-time acquisition of vibration acceleration data between the vehicle body and the unsprung parts includes: When the human safety protection function is activated in the vehicle's central control IVI system, the acceleration sensors deployed under the sprung and at key locations on the vehicle body are activated to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency.

[0009] Optionally, the step of converting the vibration acceleration into a vertical vibration frequency and determining whether the vertical vibration frequency exceeds a preset vertical threshold includes: The vibration acceleration is converted into vertical vibration frequency by a chassis domain controller or an active suspension controller; Based on the human body vibration exposure limit standard, a preset vertical threshold is set to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0010] Optionally, converting the vibration acceleration into a vertical vibration frequency via a chassis domain controller or an active suspension controller includes: The vibration acceleration is analyzed by frequency spectrum analysis using the Fast Fourier Transform (FFT) algorithm through the chassis domain controller or active suspension controller to extract the vertical vibration frequency.

[0011] Optionally, the step of setting a preset vertical threshold based on the human body vibration exposure limit standard and determining whether the vertical vibration frequency exceeds the preset vertical threshold includes: Based on the human body vibration exposure limit standard, combined with the vehicle mass and suspension parameters of the current vehicle, a preset vertical threshold is obtained through decoupled calculation. The vertical vibration frequency is compared with the preset vertical threshold in real time to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0012] Optionally, adjusting the current of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold includes: When the vertical vibration frequency exceeds the preset vertical threshold, the active suspension stiffness and the current of the active actuator are adjusted in real time according to the road grade, vehicle speed and calibration relationship of the active actuator of the current vehicle.

[0013] Optionally, after adjusting the active suspension stiffness and active actuator current in real time according to the road grade, vehicle speed, and calibration relationship of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold, the human safety active suspension system control method further includes: Determine whether the current vibration acceleration exceeds the preset acceleration threshold; When the current vibration acceleration exceeds the preset acceleration threshold, the vehicle is controlled to maintain the current current level and continue driving. When the current vibration acceleration does not exceed the preset acceleration threshold, the air spring stiffness is adjusted to reduce the natural frequency of the current vehicle suspension system, and the road excitation transmission is reduced by controlling the damping force of the active actuator and the reduced natural frequency.

[0014] Secondly, to achieve the above objectives, the present invention also proposes a human body protection active suspension system control device, the human body protection active suspension system control device comprising: The data acquisition module is used to collect vibration acceleration data of the vehicle body and unsprung parts in real time after the human safety protection function is activated in the current vehicle. The judgment module is used to convert the vibration acceleration into a vertical vibration frequency and determine whether the vertical vibration frequency exceeds a preset vertical threshold. The adjustment module is used to adjust the current of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold.

[0015] Thirdly, to achieve the above objectives, the present invention also proposes a human body protection active suspension system control device, the human body protection active suspension system control device comprising: a memory, a processor, and a human body protection active suspension system control program stored in the memory and executable on the processor, the human body protection active suspension system control program being configured to implement the steps of the human body protection active suspension system control method described above.

[0016] Fourthly, to achieve the above objectives, the present invention also proposes a storage medium storing a human body protection active suspension system control program, wherein when the human body protection active suspension system control program is executed by a processor, it implements the steps of the human body protection active suspension system control method described above.

[0017] The human body protection active suspension system control method proposed in this invention collects vibration acceleration data of the vehicle body and unsprung mass in real time after the human body protection function is activated in the current vehicle; converts the vibration acceleration into vertical vibration frequency, and determines whether the vertical vibration frequency exceeds a preset vertical threshold; when the vertical vibration frequency exceeds the preset vertical threshold, adjusts the current of the active actuator; effectively suppresses the vehicle body vibration frequency from falling back below the safe limit, avoids health risks to special groups such as pregnant women due to continuous exposure to high-frequency vibration, ensures that the vibration environment during driving meets the human tolerance standard, reduces the transmission of road vibration excitation through calibration algorithm, improves the vehicle body vibration frequency, enhances human protection, avoids prolonged exposure of the human body to a high-frequency vibration environment, and improves the speed and efficiency of active suspension system control. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of the present invention; Figure 2 This is a flowchart illustrating the first embodiment of the active suspension system control method for human body protection of the present invention; Figure 3 This is a flowchart illustrating the second embodiment of the active suspension system control method for human body protection of the present invention; Figure 4 This is a flowchart illustrating the third embodiment of the active suspension system control method for human body protection of the present invention; Figure 5 This is a flowchart illustrating the fourth embodiment of the active suspension system control method for human body protection of the present invention; Figure 6 This is a functional block diagram of the first embodiment of the active suspension system control device for human body protection of the present invention.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The solution of this invention mainly involves: after activating the human safety protection function of the vehicle, collecting vibration acceleration data of the vehicle body and unsprung mass in real time; converting the vibration acceleration into a vertical vibration frequency, and determining whether the vertical vibration frequency exceeds a preset vertical threshold; adjusting the current of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold; effectively suppressing the vehicle body vibration frequency from falling below the safety limit, avoiding health risks to pregnant women and other special groups due to continuous exposure to high-frequency vibration, ensuring that the vibration environment during driving meets human tolerance standards, reducing the transmission of road vibration excitation through calibration algorithms, improving the vehicle body vibration frequency, enhancing human protection, avoiding prolonged exposure of the human body to a high-frequency vibration environment, improving the speed and efficiency of the active suspension system control, and solving the technical problem that existing active suspension control strategies do not consider human vibration exposure limit standards, leading to health risks of excessive vibration acceleration for pregnant women and other special groups during driving.

[0022] Reference Figure 1 , Figure 1 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of the present invention.

[0023] like Figure 1As shown, the device may include: a processor 1001, such as a CPU; a communication bus 1002; a user interface 1003; a network interface 1004; and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0024] Those skilled in the art will understand that Figure 1 The device structure shown does not constitute a limitation on the device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0025] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating device, a network communication module, a user interface module, and a human body protection active suspension system control program.

[0026] The device of the present invention calls the human body protection active suspension system control program stored in the memory 1005 through the processor 1001, and performs the following operations: After the human safety protection function is activated in the current vehicle, the vibration acceleration data of the vehicle body and unsprung parts are collected in real time. The vibration acceleration is converted into a vertical vibration frequency, and it is determined whether the vertical vibration frequency exceeds a preset vertical threshold. When the vertical vibration frequency exceeds the preset vertical threshold, the current of the active actuator is adjusted.

[0027] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: When the human safety protection function is activated in the vehicle's central control IVI system, the acceleration sensors deployed under the sprung and at key locations on the vehicle body are activated to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency.

[0028] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: The vibration acceleration is converted into vertical vibration frequency by a chassis domain controller or an active suspension controller; Based on the human body vibration exposure limit standard, a preset vertical threshold is set to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0029] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: The vibration acceleration is analyzed by frequency spectrum analysis using the Fast Fourier Transform (FFT) algorithm through the chassis domain controller or active suspension controller to extract the vertical vibration frequency.

[0030] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: Based on the human body vibration exposure limit standard, combined with the vehicle mass and suspension parameters of the current vehicle, a preset vertical threshold is obtained through decoupled calculation. The vertical vibration frequency is compared with the preset vertical threshold in real time to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0031] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: When the vertical vibration frequency exceeds the preset vertical threshold, the active suspension stiffness and the current of the active actuator are adjusted in real time according to the road grade, vehicle speed and calibration relationship of the active actuator of the current vehicle.

[0032] The device of the present invention, through processor 1001 calling the human body protection active suspension system control program stored in memory 1005, also performs the following operations: Determine whether the current vibration acceleration exceeds the preset acceleration threshold; When the current vibration acceleration exceeds the preset acceleration threshold, the vehicle is controlled to maintain the current current level and continue driving. When the current vibration acceleration does not exceed the preset acceleration threshold, the air spring stiffness is adjusted to reduce the natural frequency of the current vehicle suspension system, and the road excitation transmission is reduced by controlling the damping force of the active actuator and the reduced natural frequency.

[0033] This embodiment, through the above-described scheme, collects real-time vibration acceleration data of the vehicle body and unsprung mass after the human safety protection function is activated in the current vehicle; converts the vibration acceleration into vertical vibration frequency, and determines whether the vertical vibration frequency exceeds a preset vertical threshold; when the vertical vibration frequency exceeds the preset vertical threshold, the current of the active actuator is adjusted; this effectively suppresses the vehicle body vibration frequency from falling below the safe limit, avoiding health risks to special groups such as pregnant women due to continuous exposure to high-frequency vibration, ensuring that the vibration environment during driving meets human tolerance standards, reducing the transmission of road vibration excitation through calibration algorithms, improving the vehicle body vibration frequency, enhancing human protection, avoiding prolonged exposure of the human body to a high-frequency vibration environment, and improving the speed and efficiency of the active suspension system control.

[0034] Based on the above hardware structure, an embodiment of the active suspension system control method for human body protection of the present invention is proposed.

[0035] Reference Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the active suspension system control method for human body protection according to the present invention.

[0036] In the first embodiment, the human body protection active suspension system control method includes the following steps: Step S10: After the human body protection function is activated in the current vehicle, collect the vibration acceleration data of the vehicle body and the unsprung parts in real time.

[0037] It should be noted that after the human safety protection function is activated in the current vehicle, vibration acceleration data of key parts of the vehicle body and the unsprung parts can be collected in real time, providing a continuous and reliable input basis for subsequent vibration frequency decoupling and control decisions.

[0038] Step S20: Convert the vibration acceleration into a vertical vibration frequency, and determine whether the vertical vibration frequency exceeds a preset vertical threshold.

[0039] It should be understood that by converting the real-time collected vibration acceleration data into vertical vibration frequency, the vertical vibration frequency can be compared with a preset threshold in real time, and it can be determined whether the current vibration frequency exceeds the standard to trigger subsequent control logic.

[0040] Step S30: When the vertical vibration frequency exceeds the preset vertical threshold, adjust the current of the active actuator.

[0041] Understandably, when the vertical vibration frequency exceeds a preset threshold, the current of the active actuator can be dynamically adjusted to optimize the damping force and avoid health risks to specific groups.

[0042] This embodiment, through the above-described scheme, collects real-time vibration acceleration data of the vehicle body and unsprung mass after the human safety protection function is activated in the current vehicle; converts the vibration acceleration into vertical vibration frequency, and determines whether the vertical vibration frequency exceeds a preset vertical threshold; when the vertical vibration frequency exceeds the preset vertical threshold, the current of the active actuator is adjusted; this effectively suppresses the vehicle body vibration frequency from falling below the safe limit, avoiding health risks to special groups such as pregnant women due to continuous exposure to high-frequency vibration, ensuring that the vibration environment during driving meets human tolerance standards, reducing the transmission of road vibration excitation through calibration algorithms, improving the vehicle body vibration frequency, enhancing human protection, avoiding prolonged exposure of the human body to a high-frequency vibration environment, and improving the speed and efficiency of the active suspension system control.

[0043] Furthermore, Figure 3 This is a flowchart illustrating the second embodiment of the active suspension system control method for human body protection of the present invention, as shown below. Figure 3 As shown, based on the first embodiment, a second embodiment of the active suspension system control method for human body protection of the present invention is proposed. In this embodiment, step S10 specifically includes the following steps: Step S11: When the human body protection function is activated in the vehicle central control IVI system of the current vehicle, the acceleration sensors deployed under the sprung and at key positions of the vehicle body are activated to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency.

[0044] It should be noted that when the human body protection function is activated by the vehicle's central control in-vehicle infotainment system (IVI), the system automatically starts high-precision acceleration sensors deployed under the sprung (such as wheel bearing housings or suspension arms) and key locations on the vehicle body (such as the center of the chassis or seat support structure). The sensors collect vibration acceleration data transmitted from the road surface to the vehicle body in real time at a preset sampling frequency (e.g., 100Hz, but other values ​​are also possible; this embodiment does not limit this). This ensures that the data is continuous, reliable, and accurately reflects the dynamic characteristics of human body vibration exposure, providing a basic input for subsequent vibration frequency analysis and control decisions.

[0045] This embodiment, through the above-described scheme, activates the human protection function of the vehicle's central control IVI system when it is activated. Accelerometers deployed under the sprung and at key locations on the vehicle body are then activated to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency. This provides a solid input foundation for subsequent vibration frequency decoupling and accurate determination of human vibration exposure limits, effectively supporting the timely triggering of vibration control strategies and preventing health risks to special groups such as pregnant women due to excessive vibration.

[0046] Furthermore, Figure 4This is a flowchart illustrating the third embodiment of the active suspension system control method for human body protection of the present invention, as shown below. Figure 4 As shown, based on the first embodiment, a third embodiment of the active suspension system control method for human body protection of the present invention is proposed. In this embodiment, step S20 specifically includes the following steps: Step S21: Convert the vibration acceleration into vertical vibration frequency through the chassis domain controller or active suspension controller.

[0047] It should be noted that the chassis domain controller or active suspension controller can convert the real-time collected vibration acceleration data into vertical vibration frequency for subsequent vibration state assessment and control decisions.

[0048] Furthermore, step S21 specifically includes the following steps: The vibration acceleration is analyzed by frequency spectrum analysis using the Fast Fourier Transform (FFT) algorithm through the chassis domain controller or active suspension controller to extract the vertical vibration frequency.

[0049] Understandably, the chassis domain controller or active suspension controller uses the Fast Fourier Transform (FFT) algorithm to perform spectral analysis on the real-time acquired vibration acceleration data, converting the time-domain vibration signal into frequency-domain features, thereby accurately extracting the vertical vibration frequency and providing a high-precision frequency input basis for subsequent threshold judgment and control decisions based on human vibration exposure limit standards.

[0050] Step S22: Based on the human body vibration exposure limit standard, set a preset vertical threshold and determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0051] Understandably, a preset vertical threshold can be set according to the human body vibration exposure limit standard to determine whether the vertical vibration frequency exceeds the preset vertical threshold, thereby triggering subsequent vibration control logic.

[0052] Furthermore, step S22 specifically includes the following steps: Based on the human body vibration exposure limit standard, combined with the vehicle mass and suspension parameters of the current vehicle, a preset vertical threshold is obtained through decoupled calculation. The vertical vibration frequency is compared with the preset vertical threshold in real time to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0053] It should be understood that, based on human vibration exposure limit standards (such as the 4-hour exposure limit of 0.5 m / s² for pregnant women in ISO 2631-1), an adaptive preset vertical threshold is dynamically generated through decoupling calculation, taking into account the current vehicle mass and suspension parameters. The chassis domain controller compares the vertical vibration frequency with this threshold in real time. If the frequency exceeds the limit, it immediately triggers subsequent graded control logic to ensure that the vibration environment always meets the human tolerance standard.

[0054] This embodiment uses the above-described scheme to convert the vibration acceleration into a vertical vibration frequency through a chassis domain controller or an active suspension controller. Based on the human body vibration exposure limit standard, a preset vertical threshold is set to determine whether the vertical vibration frequency exceeds the preset vertical threshold. This allows for real-time and accurate determination of whether the vibration frequency exceeds the standard, thereby providing a reliable triggering basis for subsequent graded control strategies. This ensures that the vehicle body vibration frequency is always lower than the human body tolerance limit, effectively avoiding health risks caused by excessive vibration exposure for special groups such as pregnant women.

[0055] Furthermore, Figure 5 This is a flowchart illustrating the fourth embodiment of the active suspension system control method for human body protection of the present invention, as shown below. Figure 5 As shown, based on the first embodiment, a fourth embodiment of the active suspension system control method for human body protection of the present invention is proposed. In this embodiment, step S30 specifically includes the following steps: Step S31: When the vertical vibration frequency exceeds the preset vertical threshold, adjust the active suspension stiffness and the active actuator current in real time according to the road grade, vehicle speed and calibration relationship of the active actuator of the current vehicle.

[0056] It should be noted that when the vertical vibration frequency exceeds the preset threshold, the active actuator current can be dynamically adjusted based on the current road level (such as urban roads or highways), real-time vehicle speed, and calibration relationship table of the active actuator to optimize the damping force. This allows the vehicle body vibration frequency to be precisely suppressed to below the human body vibration exposure limit standard (such as ISO 2631-1 limit of 0.5 m / s² for pregnant women for 4 hours) in real time, effectively avoiding health risks caused by continuous exposure to high-frequency vibration (0.2–1.2 m / s²) to special groups such as pregnant women.

[0057] Furthermore, after step S31, the human body protection active suspension system control also includes the following steps: Determine whether the current vibration acceleration exceeds the preset acceleration threshold; When the current vibration acceleration exceeds the preset acceleration threshold, the vehicle is controlled to maintain the current current level and continue driving. When the current vibration acceleration does not exceed the preset acceleration threshold, the air spring stiffness is adjusted to reduce the natural frequency of the current vehicle suspension system, and the road excitation transmission is reduced by controlling the damping force of the active actuator and the reduced natural frequency.

[0058] Understandably, the system monitors vibration acceleration in real time. When it exceeds a preset acceleration threshold (such as the 0.5 m / s² limit set based on the ISO2631-1 standard), it maintains the current of the active actuator to keep the vehicle in motion. When the vibration acceleration does not exceed the threshold, the system dynamically adjusts the air spring stiffness to reduce the natural frequency of the suspension system and coordinates the control of the damping force of the active actuator. Through the optimized frequency characteristics, the system significantly reduces the road excitation transmission efficiency, thereby proactively preventing subsequent risks of exceeding standards when the vibration level is low, and ensuring that the human body exposure environment always meets safety standards.

[0059] In practical implementation, the human safety protection function switch can be activated via the central control IVI switch. The unsprung acceleration sensor and the vehicle acceleration sensor collect vibration acceleration in real time. The chassis domain controller or active suspension controller converts the collected acceleration into vibration frequency. When the vertical vibration frequency exceeds the decoupled vertical threshold, the active suspension stiffness and active actuator current are adjusted in real time according to the road grade, vehicle speed, and active actuator calibration relationship. This is handled in a graded sequence: first, the active actuator current is adjusted, i.e., the active actuator damping force is adjusted; then, it is determined whether the vibration acceleration meets the threshold. If it does, the current value is maintained and driving continues; if not, the air spring stiffness is adjusted to reduce the natural frequency of the suspension system. By controlling the active actuator damping force and reducing the natural frequency of the suspension, the road excitation transmission is reduced, thereby improving the vehicle vibration frequency and preventing people, especially pregnant women and other special groups, from being exposed to high-frequency vibration environments for extended periods.

[0060] This embodiment, through the above-described scheme, adjusts the active suspension stiffness and active actuator current in real time according to the road grade, vehicle speed, and calibration relationship of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold. This effectively suppresses the vehicle body vibration frequency from falling below the safe limit, preventing health risks to special groups such as pregnant women due to continuous exposure to high-frequency vibration. It ensures that the vibration environment during driving meets human tolerance standards, reduces the transmission of road vibration excitation through the calibration algorithm, improves the vehicle body vibration frequency, enhances human protection, avoids prolonged exposure of the human body to high-frequency vibration environments, and improves the speed and efficiency of the active suspension system control.

[0061] Accordingly, the present invention further provides a human body protection active suspension system control device.

[0062] Reference Figure 6 , Figure 6 This is a functional block diagram of the first embodiment of the active suspension system control device for human body protection of the present invention.

[0063] In a first embodiment of the active suspension system control device for human protection of the present invention, the active suspension system control device for human protection includes: The data acquisition module 10 is used to collect vibration acceleration data of the vehicle body and unsprung parts in real time after the human safety protection function is activated in the current vehicle.

[0064] The judgment module 20 is used to convert the vibration acceleration into a vertical vibration frequency and determine whether the vertical vibration frequency exceeds a preset vertical threshold.

[0065] The adjustment module 30 is used to adjust the current of the active actuator when the vertical vibration frequency exceeds the preset vertical threshold.

[0066] The data acquisition module 10 is also used to activate the acceleration sensors deployed under the sprung and at key locations on the vehicle body when the human protection function is activated in the vehicle's central control IVI system, and to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency.

[0067] The judgment module 20 is further configured to convert the vibration acceleration into a vertical vibration frequency through a chassis domain controller or an active suspension controller; and to determine whether the vertical vibration frequency exceeds the preset vertical threshold based on a human vibration exposure limit standard.

[0068] The judgment module 20 is also used to perform spectral analysis on the vibration acceleration using the Fast Fourier Transform (FFT) algorithm through the chassis domain controller or the active suspension controller, and extract the vertical vibration frequency.

[0069] The judgment module 20 is also used to obtain a preset vertical threshold based on the human body vibration exposure limit standard combined with the vehicle mass and suspension parameters of the current vehicle through decoupling calculation; and to compare the vertical vibration frequency with the preset vertical threshold in real time to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0070] The adjustment module 30 is also used to adjust the active suspension stiffness and the current of the active actuator in real time according to the road grade, vehicle speed and calibration relationship of the active actuator of the road where the current vehicle is located when the vertical vibration frequency exceeds the preset vertical threshold.

[0071] The adjustment module 30 is also used to determine whether the current vibration acceleration exceeds a preset acceleration threshold; when the current vibration acceleration exceeds the preset acceleration threshold, control the current vehicle to maintain the current current magnitude and continue driving; when the current vibration acceleration does not exceed the preset acceleration threshold, adjust the air spring stiffness to reduce the natural frequency of the current vehicle suspension system, and reduce the road excitation transmission by controlling the damping force of the active actuator and the reduced natural frequency.

[0072] The steps for implementing each functional module of the human body protection active suspension system control device can be referred to in the various embodiments of the human body protection active suspension system control method of the present invention, and will not be repeated here.

[0073] Furthermore, this embodiment of the invention also proposes a storage medium storing a human safety active suspension system control program. When the human safety active suspension system control program is executed by a processor, it performs the following operations: After the human safety protection function is activated in the current vehicle, the vibration acceleration data of the vehicle body and unsprung parts are collected in real time. The vibration acceleration is converted into a vertical vibration frequency, and it is determined whether the vertical vibration frequency exceeds a preset vertical threshold. When the vertical vibration frequency exceeds the preset vertical threshold, the current of the active actuator is adjusted.

[0074] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: When the human safety protection function is activated in the vehicle's central control IVI system, the acceleration sensors deployed under the sprung and at key locations on the vehicle body are activated to synchronously collect vibration acceleration data transmitted from the road surface to the vehicle body at a preset sampling frequency.

[0075] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: The vibration acceleration is converted into vertical vibration frequency by a chassis domain controller or an active suspension controller; Based on the human body vibration exposure limit standard, a preset vertical threshold is set to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0076] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: The vibration acceleration is analyzed by frequency spectrum analysis using the Fast Fourier Transform (FFT) algorithm through the chassis domain controller or active suspension controller to extract the vertical vibration frequency.

[0077] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: Based on the human body vibration exposure limit standard, combined with the vehicle mass and suspension parameters of the current vehicle, a preset vertical threshold is obtained through decoupled calculation. The vertical vibration frequency is compared with the preset vertical threshold in real time to determine whether the vertical vibration frequency exceeds the preset vertical threshold.

[0078] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: When the vertical vibration frequency exceeds the preset vertical threshold, the active suspension stiffness and the current of the active actuator are adjusted in real time according to the road grade, vehicle speed and calibration relationship of the active actuator of the current vehicle.

[0079] Furthermore, when the human body protection active suspension system control program is executed by the processor, it also performs the following operations: Determine whether the current vibration acceleration exceeds the preset acceleration threshold; When the current vibration acceleration exceeds the preset acceleration threshold, the vehicle is controlled to maintain the current current level and continue driving. When the current vibration acceleration does not exceed the preset acceleration threshold, the air spring stiffness is adjusted to reduce the natural frequency of the current vehicle suspension system, and the road excitation transmission is reduced by controlling the damping force of the active actuator and the reduced natural frequency.

[0080] Those skilled in the art will understand that all or part of the steps in the methods described above can be implemented by a program instructing related hardware. The program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium is a computer-readable storage medium, including: USB flash drive, mobile hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and other media that can store program code.

[0081] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0082] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0083] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A human body protection active suspension system control method characterized by comprising: The human body protection active suspension system control method After the current vehicle activates the human body protection function, real-time acquisition of the vibration acceleration data of the vehicle body and the unsprung body is performed; The vibration acceleration is converted into a vertical vibration frequency, and it is determined whether the vertical vibration frequency exceeds a preset vertical threshold value; When the vertical vibration frequency exceeds the preset vertical threshold value, the current of the active actuator is adjusted.

2. The human body protection active suspension system control method according to claim 1, characterized by, After the current vehicle activates the human body protection function, real-time acquisition of the vibration acceleration data of the vehicle body and the unsprung body is performed, including: When the human body protection function of the vehicle central control IVI system of the current vehicle is activated, the acceleration sensor deployed at the key position of the unsprung body and the vehicle body of the current vehicle is started to synchronously collect the vibration acceleration data of the road excitation transmitted to the vehicle body at a preset sampling frequency.

3. The human body protection active suspension system control method according to claim 1, characterized by, The vibration acceleration is converted into a vertical vibration frequency, and it is determined whether the vertical vibration frequency exceeds a preset vertical threshold value, including: The vibration acceleration is converted into a vertical vibration frequency by a chassis domain controller or an active suspension controller; A preset vertical threshold value is set based on the human body vibration exposure limit standard, and it is determined whether the vertical vibration frequency exceeds the preset vertical threshold value.

4. The human body protection active suspension system control method according to claim 3, characterized by, The vibration acceleration is converted into a vertical vibration frequency by a chassis domain controller or an active suspension controller, including: The vibration acceleration is analyzed by a fast Fourier transform (FFT) algorithm by a chassis domain controller or an active suspension controller to extract the vertical vibration frequency.

5. The human body protection active suspension system control method according to claim 3, characterized by, The preset vertical threshold value is set based on the human body vibration exposure limit standard, and it is determined whether the vertical vibration frequency exceeds the preset vertical threshold value, including: The preset vertical threshold value is obtained by decoupling calculation based on the human body vibration exposure limit standard and the vehicle mass and suspension parameters of the current vehicle; The vertical vibration frequency is compared with the preset vertical threshold value in real time, and it is determined whether the vertical vibration frequency exceeds the preset vertical threshold value.

6. The human body protection active suspension system control method according to claim 1, characterized by, When the vertical vibration frequency exceeds the preset vertical threshold value, the current of the active actuator is adjusted, including: When the vertical vibration frequency exceeds the preset vertical threshold value, the active suspension stiffness and the current of the active actuator are adjusted in real time according to the road grade, vehicle speed, and the calibration relationship of the active actuator of the road where the current vehicle is located.

7. The human body protection active suspension system control method according to claim 6, characterized by, After the vertical vibration frequency exceeds the preset vertical threshold value, the active suspension stiffness and the current of the active actuator are adjusted in real time according to the road grade, vehicle speed, and the calibration relationship of the active actuator of the road where the current vehicle is located, the human body protection active suspension system control method further includes: It is determined whether the current vibration acceleration exceeds a preset acceleration threshold value; When the current vibration acceleration exceeds the preset acceleration threshold value, the current vehicle is controlled to keep the current current size and continue to travel; When the current vibration acceleration does not exceed the preset acceleration threshold value, the air spring stiffness is adjusted, the natural frequency of the suspension system of the current vehicle is reduced, and the road excitation transmission is reduced by controlling the damping force of the active actuator and reducing the post-natural frequency.

8. A human protection active suspension system control device characterized by comprising: The human body protection active suspension system control device includes: A data collection module is configured to collect vibration acceleration data of a vehicle body and a sprung mass in real time after a human body protection function of the vehicle is activated. A judgment module is configured to convert the vibration acceleration into a vertical vibration frequency and determine whether the vertical vibration frequency exceeds a preset vertical threshold. An adjustment module is configured to adjust a current of an active actuator when the vertical vibration frequency exceeds the preset vertical threshold.

9. A human body protection active suspension system control device characterized by comprising: The human body protection active suspension system control device comprises a memory, a processor, and a human body protection active suspension system control program stored in the memory and executable on the processor, and the human body protection active suspension system control program is configured to implement the steps of the human body protection active suspension system control method according to any one of claims 1 to 7.

10. A storage medium, characterized by The storage medium stores a human body protection active suspension system control program, and the human body protection active suspension system control program is executed by the processor to implement the steps of the human body protection active suspension system control method according to any one of claims 1 to 7.

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