Shock absorber damping force compensation system, shock absorber system and vehicle

Abstract

The utility model is suitable for the technical field of vehicles, and provides a shock absorber damping force compensation system, a shock absorber system and a vehicle. The system comprises a vehicle monitoring device, a temperature monitoring device and a controller, a coil of the shock absorber is connected with the temperature monitoring device which is connected with the controller. The temperature monitoring device is used for collecting coil data related to the temperature of the shock absorber; the vehicle monitoring device is connected with the controller and is used for monitoring vehicle data related to the damping force; the vehicle data comprises the speed of the shock absorber; the controller is connected with the shock absorber and used for sending control current to the shock absorber. According to the utility model, the coil in the shock absorber can work according to the control current, and the temperature compensation of the damping force of the shock absorber is realized, so that the damping force of the shock absorber can be accurately regulated and controlled, and the driving comfort and the control stability of a vehicle are further improved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle technology, specifically relating to a shock absorber damping force compensation system, a shock absorber system, and a vehicle. Background Technology

[0002] The shock absorber in a car is a crucial device connecting the vehicle body and wheels. It generates damping force to quickly attenuate body vibrations, allowing the vehicle to return to a stable state as soon as possible. Electronically controlled shock absorbers, in particular, can balance both vehicle comfort and handling, and are therefore widely used. Electronically controlled shock absorbers dissipate elastic potential energy by generating damping force through internal fluid.

[0003] However, in traditional technologies, when the controller controls the damping force of the electronically controlled shock absorber by controlling the operating current of the shock absorber coil, the actual damping force of the electronically controlled shock absorber often deviates from the target damping force. These deviations seriously affect the vehicle's ride comfort and handling stability. Therefore, there is an urgent need to develop more advanced and precise control technologies to achieve accurate regulation of the damping force of the electronically controlled shock absorber. Utility Model Content

[0004] This utility model provides a damper damping force compensation system, a damper system, and a vehicle to solve the technical problem that the actual damping force of an electronically controlled damper often deviates from the target damping force in traditional technologies, affecting the driving comfort and handling stability of the vehicle.

[0005] In a first aspect, this utility model provides a damper damping force compensation system for an electronically controlled damper, the system comprising: a vehicle monitoring device, a temperature monitoring device, and a controller;

[0006] The coil of the shock absorber is connected to the temperature monitoring device, and the temperature monitoring device is connected to the controller; the temperature monitoring device is used to collect data of the coil related to the temperature of the shock absorber.

[0007] The vehicle monitoring device is connected to the controller and is used to monitor vehicle data related to damping force; the vehicle data includes the speed of the shock absorber.

[0008] The controller is connected to the vibration damper and is used to send control current to the vibration damper.

[0009] The damper damping force compensation system provided in this application embodiment is applied to an electronically controlled damper. It includes a temperature monitoring device, a vehicle monitoring device, and a controller. The damper coil is connected to the temperature monitoring device, which in turn is connected to the controller. The vehicle monitoring device is also connected to the controller, and the controller is connected to the damper. The vehicle monitoring device collects vehicle data related to the damping force, while the temperature monitoring device collects data from the damper coil related to the damper temperature. Both data are sent to the controller, which then sends a control current to the damper, causing the damper coil to operate according to this control current. This achieves temperature compensation of the damper's damping force, enabling precise control of the damper's damping force and improving vehicle ride comfort and handling stability.

[0010] Optionally, the temperature monitoring device includes a current driving device and a voltage monitoring device; the current driving device is connected to the coil, the coil is connected to the voltage monitoring device, and the voltage monitoring device is connected to the controller; the data of the coil includes the voltage of the coil;

[0011] The current driving device is used to drive the coil;

[0012] The voltage monitoring device is used to collect the voltage of the coil after the current driving device drives the coil.

[0013] In this embodiment, a current driving device and a voltage monitoring device are provided. The voltage monitoring device is used to collect the voltage of the coil after the current driving device drives the coil and send it to the controller. The controller receives the voltage of the coil related to the temperature of the shock absorber. Based on the voltage related to the temperature of the shock absorber and the vehicle data related to the damping force collected by the vehicle monitoring device, the controller sends a control current to the shock absorber to realize temperature compensation of the damping force of the shock absorber.

[0014] Optionally, the voltage monitoring device is also used to periodically collect the voltage of the coil.

[0015] Here, the voltage monitoring device periodically collects the voltage of the coil and sends it to the controller, so that the controller can periodically send control current to the vibration damper to achieve real-time temperature compensation of the damper's damping force.

[0016] Optionally, the vehicle monitoring device includes a speed monitoring device;

[0017] The speed monitoring device is connected to the controller and is used to collect the speed of the shock absorber.

[0018] In this embodiment, a speed monitoring device is set to collect the speed of the vibration damper and send the speed of the vibration damper to the controller. The controller receives the speed of the vibration damper related to the damping force, and then sends a control current to the vibration damper based on the speed related to the damping force and the data of the coil related to the temperature of the vibration damper collected by the temperature monitoring device, thereby improving the accuracy of the control of the damping force of the vibration damper.

[0019] Optionally, the vehicle monitoring device includes a speed monitoring device, a steering angle monitoring device, a vehicle speed monitoring device, and an acceleration monitoring device; the vehicle data also includes the vehicle's steering wheel angle, the vehicle's speed, and the vehicle's wheel acceleration.

[0020] The speed monitoring device is used to collect the speed of the shock absorber, the steering angle monitoring device is used to collect the steering wheel angle of the vehicle, the vehicle speed monitoring device is used to collect the speed of the vehicle, and the acceleration monitoring device is used to collect the wheel acceleration of the vehicle.

[0021] The speed monitoring device, the turning angle monitoring device, the vehicle speed monitoring device, and the acceleration monitoring device are respectively connected to the controller.

[0022] In this embodiment, a speed monitoring device, a steering angle monitoring device, a vehicle speed monitoring device, and an acceleration monitoring device are set up to collect the speed of the shock absorber, the steering wheel angle, the vehicle speed, and the wheel acceleration, respectively, and send them to the controller. The controller receives the speed of the shock absorber, the steering wheel angle, the vehicle speed, and the wheel acceleration related to the damping force. Then, based on the speed, steering wheel angle, vehicle speed, and / or wheel acceleration related to the damping force, as well as the data of the coil related to the temperature of the shock absorber collected by the temperature monitoring device, the controller sends a control current to the shock absorber to perform temperature compensation on the damping force of the shock absorber, thereby improving the accuracy of the control of the damping force of the shock absorber.

[0023] Optionally, the system further includes: a display screen;

[0024] The display screen is connected to the vehicle monitoring device, the temperature monitoring device, and the controller, respectively.

[0025] Here, a display screen can intuitively show vehicle data, coil data, and control current, allowing users to easily and promptly access this data.

[0026] Optionally, the vibration damper includes a magnetorheological vibration damper and a solenoid valve type vibration damper.

[0027] Optionally, the coil is the coil of the piston in the magnetorheological damper, or the coil of the solenoid valve in the solenoid valve type damper.

[0028] In a second aspect, embodiments of the present invention provide a vibration damper system, including a vibration damper and a vibration damper damping force compensation system as described in any of the first aspects.

[0029] Thirdly, embodiments of the present invention provide a vehicle including the shock absorber system as described in the second aspect.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a structural diagram of a car suspension.

[0033] Figure 2 This is a schematic diagram of the structure of a damper damping force compensation system provided in one embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the structure of a damper damping force compensation system provided in another embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the structure of a damper damping force compensation system provided in another embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the structure of a vibration damper system provided in an embodiment of this application.

[0037] Figure label:

[0038] 1: Wheel; 2: Body; 3: Spring; 5: Linkage; 10: Vehicle monitoring device; 11: Speed ​​monitoring device; 12: Steering angle monitoring device; 13: Vehicle speed monitoring device; 14: Acceleration monitoring device; 20: Temperature monitoring device; 21: Current drive device; 22: Voltage monitoring device; 30: Controller; 40: Shock absorber; 41: Coil; 50: Shock absorber damping force compensation system; 60: Shock absorber system. Detailed Implementation

[0039] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] In the description of this utility model, it should be noted that the terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or component must have a specific orientation, specific structure, or specific operation. Therefore, they should not be construed as limitations on this utility model.

[0041] Figure 1 This is a schematic diagram of a car suspension system. The car suspension is a system connecting the wheels 1 and the car body 2, mainly composed of springs 3, shock absorbers 40, and connecting rods 5. Springs 3 support the car body 2; when the vehicle encounters an impact, springs 3 support the up-and-down vibration of the car body 2. Shock absorbers 40 generate damping force, converting the elastic potential energy of springs 3 into the internal energy of the shock absorber 40 and dissipating it to the outside, thereby reducing the decay time of springs 3, quickly damping the vibration of the car body 2, and allowing the car body 2 to return to a stable state as quickly as possible. Specifically, the shock absorber 40 contains a fluid such as shock absorber oil. When the piston of the shock absorber 40 reciprocates, the shock absorber oil generates damping force, thereby consuming elastic potential energy.

[0042] Excessive damping force results in a short spring decay time, leading to better vehicle posture control during aggressive driving such as sharp turns and sudden braking, which is beneficial for vehicle handling. However, the overall suspension is too stiff, resulting in a stronger impact felt by passengers when the vehicle travels over bumpy roads, which is detrimental to ride comfort. Conversely, insufficient damping force results in good ride comfort but poor handling.

[0043] Electronically controlled shock absorbers balance vehicle comfort and handling, making them widely used. By controlling the operating current of the shock absorber's coil, the damping force can be adjusted, reducing the impact on passengers when the vehicle travels over bumpy roads and improving vehicle handling during aggressive driving. Electronically controlled shock absorbers mainly include two types: solenoid valve type and magnetorheological type. Solenoid valve type shock absorbers control the opening of the solenoid valve through the coil current; different valve openings correspond to different damping forces as damping oil flows through the valve. Magnetorheological type shock absorbers are filled with magnetorheological fluid containing magnetic particles. When the magnetorheological fluid passes through a piston assembly wound with a coil, different coil currents generate different magnetic fields, which in turn act on the magnetic particles within the magnetorheological fluid. As the piston moves, it must overcome the interaction between the magnetic particles and the coil's magnetic field, thus generating different damping forces.

[0044] In traditional technology, when the controller controls the damping force of an electronically controlled shock absorber by controlling the operating current of the coil, the actual damping force often deviates from the target damping force. For example, research has found that the fluid in the shock absorber, such as the shock absorber oil, has different damping properties at different temperatures. At low temperatures, the fluid's damping performance is higher than at room temperature, while at high temperatures, the fluid's damping performance is lower than at room temperature; that is, the fluid's damping performance is inversely proportional to temperature. This causes the damping force of the shock absorber to vary with temperature; under the same operating current of the coil, the damping force of the shock absorber differs at different temperatures. Thus, due to the influence of temperature, the actual damping force of the electronically controlled shock absorber may deviate from the target damping force, affecting the vehicle's ride comfort and handling stability.

[0045] Based on the idea of ​​accurately controlling the damping force of the electronically controlled shock absorber, this application sets up a temperature monitoring device and a vehicle monitoring device. The vehicle monitoring device collects vehicle data related to the damping force, and the temperature monitoring device collects data of the coil related to the temperature of the shock absorber, and sends them to the controller respectively. The controller then sends a control current to the shock absorber so that the coil in the shock absorber works according to the control current, thereby realizing temperature compensation of the damping force of the shock absorber, and thus enabling precise control of the damping force of the shock absorber.

[0046] Figure 2 This is a schematic diagram of the structure of a vibration damper damping force compensation system provided in one embodiment of this application. Figure 2 As shown, the shock absorber damping force compensation system includes: a vehicle monitoring device 10, a temperature monitoring device 20, and a controller 30.

[0047] The coil 41 of the shock absorber 40 is connected to the temperature monitoring device 20, and the temperature monitoring device 20 is connected to the controller 30; the temperature monitoring device 20 is used to collect data of the coil related to the temperature of the shock absorber.

[0048] The vehicle monitoring device 10 is connected to the controller 30 to monitor vehicle data related to damping force; the vehicle data includes the speed of the shock absorber.

[0049] The controller 30 is connected to the vibration damper 40 and is used to send control current to the vibration damper 40.

[0050] Optionally, the above-mentioned vibration damper 40 is an electronically controlled vibration damper, including magnetorheological vibration dampers and solenoid valve vibration dampers, etc. Correspondingly, the coil 41 of the vibration damper 40 is the coil of the piston in the magnetorheological vibration damper, or the coil of the solenoid valve in the solenoid valve vibration damper.

[0051] In this embodiment, the temperature monitoring device 20 collects data from the coil related to the shock absorber temperature and sends the coil data to the controller 30. Here, the data from the coil related to the shock absorber temperature is actually data related to the coil temperature of the shock absorber. In this embodiment, the coil temperature is used to represent the shock absorber temperature. The vehicle monitoring device 10 collects vehicle data related to the damping force, such as the speed of the shock absorber, and sends the speed of the shock absorber to the controller 30. After receiving the data from the coil and the vehicle data, the controller 30 obtains the actual temperature of the coil based on the coil data. For example, based on the first correspondence between the coil data and the coil temperature built into the controller 30, the actual temperature of the coil is determined, i.e., the current actual temperature of the coil is determined. Alternatively, the controller 30 can obtain the target damping force of the shock absorber currently required by the vehicle based on the vehicle data. For example, based on the second correspondence between the vehicle data and the damping force built into the controller 30, the target damping force of the shock absorber currently required by the vehicle is determined. Then, the controller 30 can perform temperature compensation on the target damping force of the shock absorber currently required by the vehicle based on the actual coil temperature. For example, based on the third correspondence between the built-in temperature and damping force and the coil current of the shock absorber, the controller 30 determines the control current and performs temperature compensation on the damping force of the shock absorber.

[0052] Thus, after receiving vehicle data related to damping force and coil data related to shock absorber temperature, controller 30 sends a control current to shock absorber 40 so that coil 41 of shock absorber 40 operates according to the control current, thereby achieving temperature compensation for damping force of shock absorber.

[0053] It should be noted that the first correspondence between coil data and coil temperature can be calculated using existing technology, or obtained through numerous experiments related to coil data and actual coil temperature. This first correspondence can then be built into the controller 30, allowing the controller 30 to directly query the built-in first correspondence between coil data and coil temperature when needed, thereby obtaining the current actual temperature of coil 41. In other words, the controller 30 in the prior art possesses the function of determining the actual coil temperature based on the coil data.

[0054] Similarly, the second correspondence between vehicle data and damping force can be obtained through numerous experiments related to vehicle data and damping force, or it can be calculated using existing technology. This second correspondence can then be built into the controller 30, allowing the controller 30 to directly query the built-in second correspondence between vehicle data and damping force when needed, thereby obtaining the target damping force of the shock absorber. In other words, the controller 30 in the prior art possesses the function of determining the target damping force based on vehicle data.

[0055] Optionally, the third correspondence between temperature, damping force, and the coil current of the vibration damper can be obtained through numerous experiments related to temperature, damping force, and coil current, or calculated using existing technology. This third correspondence can then be built into the controller 30, allowing the controller 30 to directly query the built-in third correspondence between temperature, damping force, and the coil current of the vibration damper when needed, thereby obtaining the control current. In other words, the controller 30 in the prior art has the function of determining the control current based on the actual coil temperature and the target damping force.

[0056] For example, since the resistance of the coil varies at different temperatures, in this embodiment, the coil resistance can be used as the coil data. Thus, the first correspondence is actually the correspondence between the coil resistance and the coil temperature. Alternatively, the coil current and voltage can be used as the coil data, and the coil resistance obtained based on the coil current and voltage can be used again as the coil data. Thus, the first correspondence is actually the correspondence between the coil resistance and the coil temperature. As mentioned above, vehicle data can be the speed of the shock absorber, so the second correspondence is actually the correspondence between the shock absorber speed and the damping force. Thus, after receiving the shock absorber speed related to the damping force and the coil resistance related to the shock absorber temperature, the controller 30 sends a control current to the shock absorber 40, causing the coil 41 of the shock absorber 40 to operate according to the control current, thereby achieving precise control of the shock absorber's damping force.

[0057] Optionally, the shock absorber damping force compensation system may also include a display screen (not shown), which is connected to the vehicle monitoring device 10, the temperature monitoring device 20, and the controller 30, respectively, to display data of the coil related to the shock absorber temperature, vehicle data related to the damping force, and control current, so that users can observe and understand the above data more intuitively and conveniently.

[0058] For example, the shock absorber damping force compensation system may also include a memory (not shown), which is connected to the vehicle monitoring device 10, the temperature monitoring device 20, and the controller 30, respectively, for storing coil data related to the shock absorber temperature, vehicle data related to the damping force, and control current, in order to prevent data loss and facilitate user retrieval of the aforementioned data.

[0059] The damper damping force compensation system provided in this application embodiment includes a temperature monitoring device, a vehicle monitoring device, and a controller. The temperature monitoring device collects data from the coil related to the damper temperature, and the vehicle monitoring device collects vehicle data related to the damping force, such as the damper speed, and sends them to the controller. The controller then sends a control current to the damper so that the coil operates according to the control current, thereby achieving temperature compensation for the damper's damping force and precise control of the damper's damping force, thus improving the vehicle's driving comfort and handling stability.

[0060] Figure 3 This is a schematic diagram of the structure of a vibration damper damping force compensation system provided in another embodiment of this application. Figure 3 As shown, the shock absorber damping force compensation system includes: a vehicle monitoring device 10, a temperature monitoring device 20, and a controller 30.

[0061] The temperature monitoring device 20 may include a current driving device 21 and a voltage monitoring device 22; the current driving device 21 is connected to a coil 41, the coil 41 is connected to the voltage monitoring device 22, and the voltage monitoring device 22 is connected to a controller 30; the data of the coil includes the voltage of the coil.

[0062] The current driving device 21 is used to drive the coil 41; the voltage monitoring device 22 is used to collect the voltage of the coil after the current driving device 21 drives the coil 41.

[0063] The vehicle monitoring device 10 may include a speed monitoring device 11. The speed monitoring device 11 is connected to the controller 30 and is used to collect the speed of the shock absorber.

[0064] The controller 30 is connected to the vibration damper 40 and is used to send control current to the vibration damper 40.

[0065] In this embodiment, the temperature monitoring device 20 includes a current driving device 21 and a voltage monitoring device 22. The current driving device 21 drives the coil 41 of the shock absorber 40 with a preset detection current, especially when the vehicle is powered on after a long period of power failure, and the shock absorber 40 is just started. After the current driving device 21 drives the coil 41, the voltage monitoring device 22 collects the coil voltage and sends the collected coil voltage to the controller 30. Upon receiving the coil voltage, the controller 30 calculates the coil resistance based on the preset detection current and the coil voltage.

[0066] Subsequently, as mentioned above, the controller 30 can determine the actual temperature of the coil based on the coil's resistance and the correspondence between the coil's resistance and the coil temperature built into the controller 30.

[0067] It should be noted that determining the coil resistance based on the coil current and voltage is existing technology. In other words, in existing technology, the controller 30 has the function of determining the coil resistance based on a preset detection current and the coil voltage.

[0068] Optionally, the temperature monitoring device 20 may include a resistance monitoring device, which collects the resistance of the coil and sends the coil resistance to the controller 30, so that the controller 30 can determine the actual temperature of the coil based on the coil resistance and the correspondence between the coil resistance and the coil temperature built into the controller 30.

[0069] For example, the vehicle monitoring device 10 may include a speed monitoring device 11, which is used to collect the speed of the shock absorber and send the collected speed of the shock absorber to the controller 30. As mentioned above, the controller 30 determines the target damping force based on the speed of the shock absorber and the correspondence between the speed of the shock absorber and the damping force built into the controller 30.

[0070] Furthermore, the controller 30 can determine the control current based on the built-in third correspondence between temperature and damping force and the coil current of the damper. Thus, after receiving the speed of the damper related to the damping force and the voltage of the coil related to the temperature of the damper, the controller 30 sends a control current to the damper 40, so that the coil 41 of the damper 40 operates with the control current, thereby achieving temperature compensation for the damping force of the damper.

[0071] In some embodiments, the voltage monitoring device 22 is also used to periodically collect the voltage of the coil.

[0072] When the vehicle is powered on after a prolonged power outage, and the shock absorber 40 is just starting, the current drive device 21 drives the coil 41 with a preset detection current. After the shock absorber 40 starts, the controller 30 sends a control current to the shock absorber 40, and the coil 41 of the shock absorber 40 operates with this control current. At this time, when the shock absorber damping force compensation system adjusts the damping force of the shock absorber again, since the coil 41 is already operating with the control current, the current drive device 21 does not need to drive the coil 41 with the preset detection current again. The voltage monitoring device 22 directly collects the voltage of the coil and sends the collected coil voltage to the controller 30. The controller 30 can obtain the resistance of the coil based on the control current and the coil voltage.

[0073] Here, the voltage monitoring device 22 can periodically collect the voltage of the coil after a preset time. Correspondingly, the speed monitoring device 11 periodically collects the speed of the damper after a preset time. In this way, after a preset time, the controller 30 sends a control current to the damper 40 so that the coil 41 of the damper 40 works with the control current, thereby realizing real-time temperature compensation of the damping force of the damper.

[0074] The specific implementation process and principle of this embodiment can be referred to the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0075] Thus, in this embodiment, by setting up a current driving device 21 and a voltage monitoring device 22, the voltage monitoring device 22 collects the voltage of the coil after the current driving device 21 drives the coil 41 and sends the coil voltage to the controller 30. In addition, a speed monitoring device 11 is set up to collect the speed of the shock absorber and send the collected speed of the shock absorber to the controller 30. Then, the controller 30 sends a control current to the shock absorber 40 based on the coil voltage collected by the voltage monitoring device 22 and the speed of the shock absorber collected by the speed monitoring device 11, so that the coil 41 works according to the control current, thereby realizing temperature compensation of the damping force of the shock absorber and improving the driving comfort and handling stability of the vehicle.

[0076] Figure 4 This is a schematic diagram of the structure of a vibration damper damping force compensation system provided in another embodiment of this application. Figure 4 As shown, the shock absorber damping force compensation system includes: a vehicle monitoring device 10, a temperature monitoring device 20, and a controller 30.

[0077] The temperature monitoring device 20 may include a current driving device 21 and a voltage monitoring device 22; the current driving device 21 is connected to a coil 41, the coil 41 is connected to the voltage monitoring device 22, and the voltage monitoring device 22 is connected to a controller 30; the data of the coil includes the voltage of the coil.

[0078] The current driving device 21 is used to drive the coil 41; the voltage monitoring device 22 is used to collect the voltage of the coil after the current driving device 21 drives the coil 41.

[0079] The vehicle monitoring device 10 may include a speed monitoring device 11, a steering angle monitoring device 12, a vehicle speed monitoring device 13, and an acceleration monitoring device 14; the vehicle data may also include the vehicle's steering wheel angle, vehicle speed, and vehicle wheel acceleration.

[0080] Speed ​​monitoring device 11 is used to collect the speed of the shock absorber, steering angle monitoring device 12 is used to collect the steering wheel angle of the vehicle, vehicle speed monitoring device 13 is used to collect the vehicle speed, and acceleration monitoring device 14 is used to collect the wheel acceleration of the vehicle. Speed ​​monitoring device 11, steering angle monitoring device 12, vehicle speed monitoring device 13, and acceleration monitoring device 14 are respectively connected to controller 30.

[0081] The controller 30 is connected to the vibration damper 40 and is used to send control current to the vibration damper 40.

[0082] In this embodiment, the temperature monitoring device 20 includes a current driving device 21 and a voltage monitoring device 22. The current driving device 21 drives the coil 41 of the shock absorber 40 with a preset detection current, especially when the vehicle is powered on after a long period of power failure, and the shock absorber 40 is just started. After the current driving device 21 drives the coil 41, the voltage monitoring device 22 collects the coil voltage and sends the collected coil voltage to the controller 30. Upon receiving the coil voltage, the controller 30 calculates the coil resistance based on the preset detection current and the coil voltage.

[0083] Subsequently, as mentioned above, the controller 30 can determine the actual temperature of the coil based on the coil's resistance and the correspondence between the coil's resistance and the coil temperature built into the controller 30.

[0084] For example, the vehicle monitoring device 10 may include a speed monitoring device 11, a steering angle monitoring device 12, a vehicle speed monitoring device 13, and an acceleration monitoring device 14. The four monitoring devices in the vehicle monitoring device 10 each collect corresponding data and send the collected data to the controller 30.

[0085] After receiving the speed of the shock absorber, the steering wheel angle, the vehicle speed, and the wheel acceleration, the controller 30 determines the target damping force based on the speed of the shock absorber and the correspondence between the speed of the shock absorber and the damping force built into the controller 30. Based on the steering wheel angle, the vehicle speed and / or the wheel acceleration, the target damping force, and the preset rules built into the controller 30, the controller 30 obtains the adjusted target damping force.

[0086] The preset rules include: when the vehicle speed is greater than a first speed threshold, increasing the target damping force by a first preset percentage to obtain an adjusted target damping force; when the vehicle speed is greater than a second speed threshold but less than or equal to the first speed threshold, and the steering wheel angle is greater than a preset steering angle threshold, increasing the target damping force by a second preset percentage to obtain an adjusted target damping force; when the vehicle speed is less than or equal to the second speed threshold, and the wheel acceleration is greater than a preset acceleration threshold, decreasing the target damping force by a third preset percentage to obtain an adjusted target damping force. The first speed threshold is greater than the second speed threshold.

[0087] In this embodiment, the preset rules are derived from human experience or from numerous experiments related to vehicle speed, steering wheel angle, wheel acceleration, and damping force. For example, based on experience, when the vehicle speed is high, the damping force of the shock absorber should be greater to improve vehicle handling stability. When the vehicle speed is moderate but the steering wheel angle is large, the vehicle may be about to make a sharp turn, and the damping force of the shock absorber should be greater to ensure vehicle stability. When the vehicle speed is low and the wheel acceleration is large, the current road conditions may be poor, and the damping force of the shock absorber should be smaller to improve comfort. The preset rules are set in the controller 30 so that the controller 30 can directly query the built-in preset rules when needed to obtain the adjusted target damping force. That is, in the prior art, the controller 30 has the function of obtaining the adjusted damping force based on the damping force, steering wheel angle, vehicle speed, and / or wheel acceleration.

[0088] Furthermore, the controller 30 can determine the control current based on the actual temperature of the coil, the adjusted target damping force, and the third correspondence between temperature, damping force, and coil current of the shock absorber built into the controller 30. Thus, after receiving the shock absorber speed, steering wheel angle, vehicle speed, and wheel acceleration related to the damping force, as well as the coil voltage related to the shock absorber temperature, the controller 30 sends a control current to the shock absorber 40, causing the coil 41 of the shock absorber 40 to operate with this control current, thereby achieving temperature compensation for the damping force of the shock absorber.

[0089] The specific implementation process and principle of this embodiment can be referred to the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0090] Thus, in this embodiment, by setting up a speed monitoring device, a steering angle monitoring device, a vehicle speed monitoring device, and an acceleration monitoring device, the speed of the shock absorber, the steering wheel angle, the vehicle speed, and the wheel acceleration related to the damping force are collected respectively and sent to the controller. In addition, a current driving device and a voltage monitoring device are set up. After the current driving device drives the coil, the voltage monitoring device collects the voltage of the coil and sends the voltage of the coil to the controller. Then the controller sends a control current to the shock absorber so that the coil works with the control current, thereby realizing temperature compensation of the damping force of the shock absorber and improving the driving comfort and handling stability of the vehicle.

[0091] Figure 5 This is a schematic diagram of the structure of a vibration damper system provided in one embodiment of this application. Figure 5 As shown, the damper system 60 includes a damper 40 and a damper damping force compensation system 50.

[0092] The aforementioned damper damping force compensation system 50 can be any damper damping force compensation system provided in any embodiment of this application.

[0093] The specific implementation process and principle of this embodiment, as well as the corresponding beneficial effects, can be referred to the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0094] One embodiment of this application also provides a vehicle. The vehicle includes a shock absorber system.

[0095] The aforementioned vibration damper system may be the vibration damper system provided in the foregoing embodiments of this application.

[0096] The specific implementation process and principle of this embodiment, as well as the corresponding beneficial effects, can be referred to the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0097] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A damping force compensation system for a vibration damper, characterized in that, The system, which is applied to electronically controlled shock absorbers, includes: a vehicle monitoring device, a temperature monitoring device, and a controller; The coil of the shock absorber is connected to the temperature monitoring device, and the temperature monitoring device is connected to the controller; the temperature monitoring device is used to collect data of the coil related to the temperature of the shock absorber. The vehicle monitoring device is connected to the controller and is used to monitor vehicle data related to damping force; the vehicle data includes the speed of the shock absorber. The controller is connected to the vibration damper and is used to send control current to the vibration damper.

2. The damper damping force compensation system according to claim 1, characterized in that, The temperature monitoring device includes a current driving device and a voltage monitoring device; the current driving device is connected to the coil, the coil is connected to the voltage monitoring device, and the voltage monitoring device is connected to the controller; the data of the coil includes the voltage of the coil. The current driving device is used to drive the coil; The voltage monitoring device is used to collect the voltage of the coil after the current driving device drives the coil.

3. The damper damping force compensation system according to claim 2, characterized in that, The voltage monitoring device is also used to periodically collect the voltage of the coil.

4. The damper damping force compensation system according to any one of claims 1 to 3, characterized in that, The vehicle monitoring device includes a speed monitoring device; The speed monitoring device is connected to the controller and is used to collect the speed of the shock absorber.

5. The damper damping force compensation system according to any one of claims 1 to 3, characterized in that, The vehicle monitoring device includes a speed monitoring device, a steering angle monitoring device, a vehicle speed monitoring device, and an acceleration monitoring device; the vehicle data also includes the vehicle's steering wheel angle, the vehicle's speed, and the vehicle's wheel acceleration. The speed monitoring device is used to collect the speed of the shock absorber, the steering angle monitoring device is used to collect the steering wheel angle of the vehicle, the vehicle speed monitoring device is used to collect the speed of the vehicle, and the acceleration monitoring device is used to collect the wheel acceleration of the vehicle. The speed monitoring device, the turning angle monitoring device, the vehicle speed monitoring device, and the acceleration monitoring device are respectively connected to the controller.

6. The damper damping force compensation system according to any one of claims 1 to 3, characterized in that, The system also includes: a display screen; The display screen is connected to the vehicle monitoring device, the temperature monitoring device, and the controller, respectively.

7. The damper damping force compensation system according to any one of claims 1 to 3, characterized in that, The vibration damper includes a magnetorheological vibration damper and a solenoid valve vibration damper.

8. The damper damping force compensation system according to claim 7, characterized in that, The coil is either the coil of the piston in the magnetorheological damper, or the coil of the solenoid valve in the solenoid valve type damper.

9. A vibration damper system, characterized in that, Includes a vibration damper and a vibration damper damping force compensation system as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the vibration damper system as described in claim 9.

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