A system for actively adjusting steering wheel damping

Abstract

This invention relates to the field of automotive steering wheel adjustment systems, and discloses a system for actively adjusting steering wheel damping, including a sensing module and a data processing module. This system collects real-time oil pressure and temperature values ​​of the oil within the steering wheel frame and its inner lining using the sensing module, and converts the driver's actively input control commands into relevant thresholds. The data processing module calculates the real-time pressure change value Ylbh and the real-time temperature change rate Wdbh according to relevant algorithms. When these two values ​​are within normal ranges, the data processing module issues an increase / decrease command for the oil pressure. Upon receiving the command, the control module increases or decreases the pressure of the oil within the steering wheel frame and its inner lining, altering the pressure impulse to cause expansion or compression of the steering wheel surface. This changes the steering wheel's flexibility, providing better comfort and allowing for different tactile sensations from the user.

Description

Technical Field

[0001] This invention relates to the field of automotive steering wheel adjustment system technology, specifically a system for actively adjusting steering wheel damping. Background Technology

[0002] The steering wheel is one of the control devices in a car, usually fixed to the driver's left side, used to control the vehicle's direction and steer. It typically consists of a central shaft, a disc, and a set of steering rods and gears connected to the wheels. Generally, when the steering wheel is turned left or right, the wheels turn accordingly, thus changing the vehicle's direction. The steering wheel can also be used to control other car equipment, such as adjusting audio volume and changing radio channels. With the continuous development of technology, cars are no longer just simple tools for transportation; they also need more functions to satisfy people's spiritual enjoyment. Higher demands are placed on the comfort of cars. As one of the most important safety components in a car, the steering wheel not only ensures that the car travels in the direction the driver controls, but also requires higher standards of aesthetics and flexibility. To provide drivers with a better tactile experience with the steering wheel, a new type of steering wheel that can adjust its flexibility is particularly important. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a system for actively adjusting steering wheel damping. The system utilizes a sensing module to collect real-time oil pressure and temperature values ​​of the oil within the steering wheel frame and its covering layer. It converts driver-inputted control commands into relevant thresholds. A data processing module calculates the real-time pressure change value (Ylbh) and the real-time temperature change rate (Wdbh) using relevant algorithms. When these two values ​​are within normal ranges, the data processing module issues an increase / decrease command for the oil pressure. Upon receiving this command, the control module adjusts the pressure of the oil within the steering wheel frame and its covering layer, altering the pressure impulse to cause expansion or compression of the steering wheel surface. This changes the steering wheel's flexibility, providing better user comfort and allowing for different tactile sensations from the user, thus solving the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a system for actively adjusting steering wheel damping, comprising a sensing module, an input unit, a data processing module, and a control module;

[0007] The input unit is used to input the driver's active control commands into the data processing module. The sensing module is used to collect data related to the steering wheel frame and the fluid in the wrapping layer. The sensing module also includes a pressure sensing unit and a temperature sensing unit. The pressure sensing unit is used to collect the real-time pressure value Yl of the fluid, and the temperature sensing unit is used to collect the real-time temperature value Wd of the fluid. The sensing module sends the collected data to the data processing module.

[0008] After receiving the real-time temperature value Wd and the real-time pressure value Yl, the data processing module calculates the real-time temperature value change rate Wdbh and the real-time pressure value change value Ylbh according to the algorithm formula. The data processing module converts the driver's active control command signal into a pressure value threshold YLyz and an oil temperature increase rate threshold Wdyz. The data processing module compares the calculated real-time temperature value change rate Wdbh and real-time pressure value change value Ylbh with the pressure value threshold YLyz and the oil temperature increase rate threshold Wdyz, and sends the control signal to the control module.

[0009] The control module adjusts the oil pressure and steering wheel grip force according to the control signal.

[0010] Preferably, after receiving the active control command, the data processing module converts the active control command into a pressure value threshold YLyz and an oil temperature increase rate threshold Wdyz, wherein the pressure value threshold YLyz ranges from 50% to 100%, and the oil temperature increase rate threshold Wdyz is 5%.

[0011] Preferably, the data processing module uses the following algorithm to calculate the real-time temperature change rate Wdbh:

[0012]

[0013] In the formula, Wd n+5 Wd represents the final oil temperature collected by the temperature sensing unit within 1 second. n This indicates the initial oil temperature collected by the temperature sensing unit within 1 second. n+5 indicates that the oil temperature values ​​were collected 5 times within 1 second, and 1 indicates that the time interval is 1 second.

[0014] Preferably, the data processing module temporarily stores the calculated real-time temperature change rate Wdbh in a storage medium set within it.

[0015] Preferably, the data processing module uses the following algorithm formula to calculate the real-time pressure change value Ylbh:

[0016]

[0017] In the formula, Yl qYl represents the real-time pressure value collected in the previous second. q The acquisition interval between Yl and Yl is 1 second.

[0018] Preferably, the data processing module temporarily stores the calculated real-time pressure change value Ylbh in a storage medium set within it.

[0019] Preferably, the data processing module compares the real-time temperature change rate Wdbh with the oil temperature increase rate threshold Wdyz, and the real-time pressure change value Ylbh with the pressure value threshold YLyz.

[0020] When the oil temperature increase rate threshold Wdyz is less than the real-time temperature value change rate Wdbh, the real-time temperature value change rate Wdbh is abnormal, and the data processing module sends a temperature abnormality signal.

[0021] When the pressure value threshold YLyz is less than the real-time pressure value change Ylbh, the real-time pressure value change Ylbh is abnormal, and the data processing module issues an oil pressure abnormality signal.

[0022] When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is greater than the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues an increase or decrease oil pressure command.

[0023] When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is equal to the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues a command to stop increasing or decreasing the oil pressure.

[0024] Preferably, the formula for calculating the pressure value threshold YLyz is as follows:

[0025]

[0026] In the formula, YL ys The active control commands input by the driver are converted into predetermined hydraulic pressure values, which are then controlled via YL. ys -Yl determines the value that needs to be increased or decreased for the current oil pressure, which is then used as the pressure threshold YLyz.

[0027] Preferably, the data processing module further includes a display unit, which is used to display abnormal temperature signals or abnormal oil pressure signals.

[0028] Preferably, the data processing module sends the stop / reduction oil pressure command or the increase / reduction oil pressure command to the control module;

[0029] When the control module receives a command to increase or decrease oil pressure, the control module controls the pressurization device to increase or decrease the pressure of the oil in the steering wheel frame and the wrapping layer.

[0030] When the control module receives a command to stop increasing or decreasing the oil pressure, the control module controls the pressurization device to stop increasing or decreasing the oil pressure in the steering wheel frame and the wrapping layer.

[0031] Compared with the prior art, the present invention provides a system for actively adjusting steering wheel damping, which has the following beneficial effects:

[0032] 1. This invention uses a sensing module to collect real-time oil pressure and temperature values ​​of the oil in the steering wheel frame and wrapping layer. It converts the driver's actively input control commands into relevant thresholds. The data processing module calculates the real-time pressure change value Ylbh and the real-time temperature change rate Wdbh based on relevant algorithms. When these two values ​​are within normal ranges, the data processing module issues an increase / decrease oil pressure command. Upon receiving this command, the control module increases or decreases the pressure of the oil in the steering wheel frame and wrapping layer, altering the pressure impulse to cause expansion or compression of the steering wheel surface. This changes the steering wheel's flexibility, providing better comfort and allowing for different tactile sensations from the user.

[0033] 2. This invention uses a data processing module to calculate the real-time pressure change value Ylbh and the real-time temperature change rate Wdbh according to relevant algorithms. When these two values ​​are abnormal, the data processing module displays the relevant abnormal signal through its display unit, which makes it easy for the driver to intuitively grasp that the steering wheel grip (damping) adjustment system is abnormal and to stop adjusting the steering wheel grip in time, so that the driver can repair or replace the relevant steering wheel modules in a timely manner. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the system flow of the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] As one of the most important safety components in a car, the steering wheel not only ensures the vehicle travels in the direction the driver controls, but also demands higher standards of aesthetics and flexibility. To provide drivers with a better steering wheel experience, a new type of steering wheel capable of adjusting its flexibility is crucial. However, current steering wheels cannot change their stiffness, and the limited configuration options, coupled with individual differences in sensory experience, lack a single adjustment mode to meet the diverse needs of a wide range of users. This places higher demands on the design functionality of steering wheels. Therefore, a system for actively adjusting steering wheel damping is proposed. Please refer to [link / reference]. Figure 1 The system includes a sensing module, an input unit, a data processing module, and a control module, wherein;

[0037] The input unit is used to input the driver's active control commands into the data processing module. The active control commands are signals used to control the grip force on the vehicle's steering wheel.

[0038] The sensing module is used to collect data related to the oil in the steering wheel frame and the wrapping layer. It also includes a pressure sensing unit and a temperature sensing unit. The pressure sensing unit is used to collect the real-time pressure value Yl of the oil, and the temperature sensing unit is used to collect the real-time temperature value Wd of the oil. The sensing module sends the collected real-time temperature value Wd and real-time pressure value Yl to the data processing module.

[0039] The data processing module has pre-set algorithm formulas to calculate the real-time temperature change rate Wdbh and the real-time pressure change value Ylbh respectively. At the same time, the data processing module converts the driver's active control command signal into a pressure value threshold YLyz and an oil temperature increase rate threshold Wdyz. The pressure value threshold YLyz is a dynamic value that changes according to the driver's settings, and its value ranges from 50% to 100%. The oil temperature increase rate threshold Wdyz is a fixed value of 5%. By limiting the value range of the pressure value threshold YLyz, the phenomenon of excessively soft or hard steering wheel grip is avoided. By setting a threshold for the oil temperature increase rate, the oil temperature can be used to determine whether there are too many impurities in the oil or whether the turbocharger is malfunctioning.

[0040] The algorithm formula for the real-time temperature change rate Wdbh is as follows:

[0041]

[0042] In the formula, Wd n+5 Wd represents the final oil temperature collected by the temperature sensing unit within 1 second. n This indicates the initial oil temperature collected by the temperature sensing unit within 1 second; n+5 indicates that the oil temperature values ​​were collected 5 times within 1 second; and 1 indicates that the time interval is 1 second.

[0043] The algorithm formula for the real-time pressure change value Ylbh is as follows:

[0044] Ylbh = Yl - Yl q

[0045] In the formula, Yl q Yl represents the real-time pressure value collected in the previous second. q The acquisition interval between Yl and Yl is 1 second;

[0046] The data processing module temporarily stores the calculated real-time temperature change rate Wdbh and real-time pressure change value Ylbh in its internal storage medium.

[0047] The formula for calculating the pressure numerical threshold YLyz is as follows:

[0048] YLyz=YL ys -Yl

[0049] In the formula, YL ys The active control commands input by the driver are converted into predetermined hydraulic pressure values, which are then controlled via YL. ys -Yl determines the value that needs to be increased or decreased for the current oil pressure, which is then used as the pressure threshold YLyz;

[0050] The data processing module compares the calculated real-time temperature change rate Wdbh with the oil temperature increase rate threshold Wdyz, and the real-time pressure change value Ylbh with the pressure value threshold YLyz. The specific judgment rules are as follows:

[0051] When the oil temperature increase rate threshold Wdyz is less than the real-time temperature value change rate Wdbh, the real-time temperature value change rate Wdbh is abnormal, and the data processing module sends a temperature abnormality signal.

[0052] When the pressure value threshold YLyz is less than the real-time pressure value change Ylbh, the real-time pressure value change Ylbh is abnormal, and the data processing module issues an oil pressure abnormality signal.

[0053] When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is greater than the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues an increase or decrease oil pressure command.

[0054] When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is equal to the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues a command to stop increasing or decreasing oil pressure.

[0055] When abnormal temperature or oil pressure signals are detected, the data processing module displays the relevant abnormal signals through its display unit, allowing the driver to easily and intuitively grasp the abnormality of the steering wheel grip (damping) adjustment system and stop adjusting the steering wheel grip in time, so that the driver can repair or replace the relevant steering wheel modules in a timely manner.

[0056] When the real-time temperature change rate Wdbh and the real-time pressure change value Ylbh are both within the normal range, the data processing module will send a stop / reduction oil pressure command or an increase / reduction oil pressure command to the control module. The control module will then control the booster equipment to start operating, as detailed below:

[0057] When the control module receives a command to increase or decrease oil pressure, the control module controls the pressurization device to increase or decrease the pressure of the oil in the steering wheel frame and the wrapping layer.

[0058] When the control module receives a command to stop increasing or decreasing the oil pressure, the control module controls the pressurization device to stop increasing or decreasing the pressure of the oil in the steering wheel frame and the wrapping layer.

[0059] The sensor module collects real-time oil pressure and temperature values ​​of the oil in the steering wheel frame and wrapping layer, and converts the driver's active control commands into relevant thresholds. The data processing module calculates the real-time pressure change value Ylbh and the real-time temperature change rate Wdbh according to relevant algorithms. When these two values ​​are within normal ranges, the data processing module issues an increase or decrease oil pressure command. After receiving the increase or decrease oil pressure command, the control module increases or decreases the pressure of the oil in the steering wheel frame and wrapping layer, changing the pressure impulse of the oil to cause the steering wheel surface to expand or compress, thereby changing the steering wheel's flexibility and providing the user with a better sense of comfort. At the same time, it also allows the user to experience different tactile sensations on the steering wheel.

[0060] In the above, the input unit is a hard switch button on the steering wheel, and the data processing module can be, but is not limited to, the vehicle's information computing center (ICC).

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for actively adjusting steering wheel damping, characterized by: It includes a sensing module, an input unit, a data processing module, and a control module; The input unit is used to input the driver's active control commands into the data processing module. The sensing module is used to collect data related to the steering wheel frame and the fluid in the wrapping layer. The sensing module also includes a pressure sensing unit and a temperature sensing unit. The pressure sensing unit is used to collect the real-time pressure value Yl of the fluid, and the temperature sensing unit is used to collect the real-time temperature value Wd of the fluid. The sensing module sends the collected data to the data processing module. After receiving the real-time temperature value Wd and the real-time pressure value Yl, the data processing module calculates the real-time temperature value change rate Wdbh and the real-time pressure value change value Ylbh according to the algorithm formula. The data processing module converts the driver's active control command signal into a pressure value threshold YLyz and an oil temperature increase rate threshold Wdyz. The data processing module compares the calculated real-time temperature value change rate Wdbh and real-time pressure value change value Ylbh with the pressure value threshold YLyz and the oil temperature increase rate threshold Wdyz, and sends the control signal to the control module. The control module adjusts the oil pressure and steering wheel grip force according to the control signal.

2. A system for actively adjusting steering wheel damping according to claim 1, characterized in that: After receiving the active control command, the data processing module converts the active control command into a pressure value threshold YLyz and an oil temperature increase rate threshold Wdyz. The pressure value threshold YLyz ranges from 50% to 100%, and the oil temperature increase rate threshold Wdyz is 5%.

3. The system for actively adjusting steering wheel damping according to claim 2, characterized in that: The data processing module uses the following algorithm to calculate the real-time temperature change rate Wdbh: In the formula, Wd n+5 represents the final oil temperature collected by the temperature sensing unit within 1 second, Wd n represents the initial oil temperature collected by the temperature sensing unit within 1 second, n+5 represents the oil temperature value collected 5 times within 1 second, and 1 represents a time interval of 1 second.

4. The system for actively adjusting steering wheel damping according to claim 3, characterized in that: The data processing module temporarily stores the calculated real-time temperature change rate Wdbh in its internal storage medium.

5. A system for actively adjusting steering wheel damping according to claim 2, characterized in that: The data processing module uses the following algorithm to calculate the real-time pressure change value Ylbh: Ylbh = Yl - Yl q In the formula, Yl q represents the real-time pressure value collected in the last second, Yl q The collection interval between Yl and Y2 is 1 second.

6. The system for actively adjusting steering wheel damping according to claim 5, characterized in that: The data processing module temporarily stores the calculated real-time pressure change value Ylbh in its internal storage medium.

7. A system for actively adjusting steering wheel damping according to claim 4 or 6, characterized in that: The data processing module compares the real-time temperature change rate Wdbh with the oil temperature increase rate threshold Wdyz, and the real-time pressure change value Ylbh with the pressure value threshold YLyz. When the oil temperature increase rate threshold Wdyz is less than the real-time temperature value change rate Wdbh, the real-time temperature value change rate Wdbh is abnormal, and the data processing module sends a temperature abnormality signal. When the pressure value threshold YLyz is less than the real-time pressure value change value Ylbh, the real-time pressure value change value Ylbh is abnormal, and the data processing module sends an oil pressure abnormality signal. When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is greater than the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues an increase or decrease oil pressure command. When the oil temperature increase rate threshold Wdyz is greater than the real-time temperature value change rate Wdbh, and at the same time, the pressure value threshold YLyz is equal to the real-time pressure value change value Ylbh, the real-time temperature value change rate Wdbh is normal, the real-time pressure value change value Ylbh is normal, and the data processing module issues a command to stop increasing or decreasing the oil pressure.

8. A system for actively adjusting steering wheel damping according to claim 7, characterized in that: The formula for calculating the pressure numerical threshold YLyz is as follows: YLyz = YL ys -Yl In the formula, YL ys The active control instruction input by the driver is converted into a predetermined oil pressure value, and the current oil pressure value is increased or decreased by YL ys -YL to obtain a value by which the current oil pressure value needs to be increased or decreased as the pressure value threshold YLyz.

9. A system for actively adjusting steering wheel damping according to claim 7, characterized in that: The data processing module also includes a display unit, which is used to display abnormal temperature signals or abnormal oil pressure signals.

10. A system for actively adjusting steering wheel damping according to claim 7, characterized in that: The data processing module will send the stop or increase / decrease oil pressure command to the control module; When the control module receives a command to increase or decrease oil pressure, the control module controls the pressurization device to increase or decrease the pressure of the oil in the steering wheel frame and the wrapping layer. When the control module receives a command to stop increasing or decreasing the oil pressure, the control module controls the pressurization device to stop increasing or decreasing the pressure of the oil in the steering wheel frame and the wrapping layer.

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