CDC active suspension control system

Abstract

The utility model relates to the technical field of automobile suspension control, solves the technical problems that in the prior art, road details cannot be fed back in real time along with accurate road condition changes, and bumping and vibration cannot be effectively reduced, and particularly relates to a CDC active suspension control system which comprises a micro-processing module. The suspension control system further comprises a sensor module used for collecting acceleration data, a constant current damping module and a valve control module which are used for current control and signal processing, and a communication module used for communication. A simple vehicle frame structure is combined, the traditional suspension control function is completed, the structure and the sensors are simplified, the same function is reserved, meanwhile, the manufacturing complexity of the vehicle can be reduced, the installation number of the sensors is reduced, and part of manufacturing cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension control technology, and in particular to a CDC active suspension control system. Background Technology

[0002] CDC active suspension generally refers to a device that can automatically identify road conditions and continuously adjust and control damping. Traditional passive suspension has fixed stiffness and damping characteristics and cannot be adjusted according to changes in road conditions. Although car owners can make some minor adjustments to the passive suspension at auto repair shops, the adjustment range and effect are limited. Existing CDC active suspension can dynamically and adaptively adjust the stiffness and damping characteristics of the suspension system according to the vehicle's driving conditions (such as the vehicle's motion state and road conditions), so that the suspension system is always in the optimal damping state. This adjustment capability improves the vehicle's ride comfort and handling stability. Traditional CDC active suspension control systems cannot accurately respond to changes in road conditions, the driver cannot get real-time, delicate road feedback, and cannot effectively reduce bumps and vibrations during driving. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a CDC active suspension control system, which solves the technical problem that existing technologies lack the ability to accurately follow changes in road conditions and provide real-time feedback on road surface details, and effectively reduce bumps and vibrations. It achieves a more precise response to changes in road conditions, allowing drivers to experience more delicate road feedback, and effectively reducing bumps and vibrations during vehicle operation.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a CDC active suspension control system, including a microprocessor module, the suspension control system further including a sensor module for collecting acceleration data, a constant current damping module for current control and signal processing, and a valve control module.

[0005] Furthermore, the sensor module comprises the following interfaces: FR_WhlSr_IN, FL_WhlSr_IN, PWM / ADI / PSI5+_7_IN, PWM / AD2 / PSI5_7_IN, PWM / AD3 / PSI5+_8_IN, PWM / AD4 / PSI5_8_IN, PWM / ADS / PSI5+_9_IN, PWM / AD6 / PSI5_9_IN, PWM / AD_7_IN, current-limiting resistors R28-R36, FR_AD, FL_AD, AD1_OUT, AD2_OUT, AD3_OUT, AD4_OUT, ADS_OUT, AD6_OUT, and AD7_OUT. The _IN interface, PWM / AD3 / PSI5+_8_IN interface, PWM / AD4 / PSI5_8_IN interface, PWM / ADS / PSI5+_9_IN interface, PWM / AD6 / PSI5_9_IN interface, and PWM / AD_7_IN interface are connected to the FR_AD interface, FL_AD interface, AD1_OUT interface, AD2_OUT interface, AD3_OUT interface, AD4_OUT interface, ADS_OUT interface, AD6_OUT interface, and AD7_OUT interface respectively through current-limiting resistors R28-R36.

[0006] Furthermore, the constant current damping module consists of a constant current dedicated driver chip U5, an external power supply, and a current limiting resistor R74. The external power supply is connected to the BAT interface of the constant current dedicated driver chip U5 through the current limiting resistor R74. The POS0 interface and ENG0 interface of the constant current dedicated driver chip U5 are respectively connected to the valve control module.

[0007] Furthermore, the valve control module consists of solenoid valve interfaces FR+ and FR-, a MOS transistor, and a sampling resistor R89. The POS0 and ENG0 interfaces of the constant current dedicated driver chip U5 are connected to both sides of the sampling resistor R89, and the solenoid valve interface FR+ is connected to the solenoid valve interface FR- through the MOS transistor and the resistor R89.

[0008] Furthermore, the microprocessor module consists of a chip control power supply, power supply current limiting resistors R75, R80 and R81, and a microprocessor chip. The control power supply is connected to the SYS_BUTTON interface, SYS_WAKEUP0 / PMU_WAKEUP0 / TM_TAMPER3 interface and SYS_WAKEUP1 / PMU_WAKEUP0 / TM_TAMPER2 interface of the microprocessor chip through current limiting resistors R81, R80 and R75, respectively.

[0009] Furthermore, the suspension control system also includes a communication module for communication, which is composed of a communication chip.

[0010] Furthermore, the constant current dedicated driver chip U5 is model number TLE7242, the microprocessor chip is model number E3640-AGKAA, and the communication chip is model number TLE9278.

[0011] By employing the above technical solution, this utility model provides a CDC active suspension control system, which has at least the following beneficial effects:

[0012] 1. This utility model achieves the function of traditional suspension control by synergistically combining a microprocessor module, a sensor module, a constant current damping module, and a valve control module with a simple vehicle frame structure. While simplifying the structure and sensors and retaining the same functions, it can also reduce the manufacturing complexity of the vehicle, reduce the number of sensors installed, and save some manufacturing costs.

[0013] 2. This utility model uses data from the vehicle's acceleration sensor, which is processed by the algorithm in the microprocessor module. The human-machine interface sends various suspension mode commands through the communication module, thereby enabling the controller in the microprocessor module to output the control current of the shock absorber solenoid valve in real time to adjust the damping of the shock absorber. This not only improves the comfort and handling stability of the entire vehicle, but also simplifies the operation process, enhances the vehicle's adaptability to various road conditions, and greatly improves the driving experience for passengers. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a structural block diagram of a CDC active suspension control system according to the present invention;

[0016] Figure 2 This is a circuit diagram of the left and right pins of the microprocessor module of this utility model;

[0017] Figure 3This is a circuit diagram of the upper and lower pins of the microprocessor module of this utility model;

[0018] Figure 4 This is a circuit diagram of the sensor module of this utility model;

[0019] Figure 5 This is the circuit diagram of the constant current vibration damping module of this utility model;

[0020] Figure 6 This is the circuit diagram of the valve control module of this utility model.

[0021] In the diagram: 1. Microprocessor module; 2. Sensor module; 3. Constant current damping module; 4. Valve control module; 5. Communication module. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Because existing technologies lack the technical ability to accurately track changes in road conditions and provide real-time feedback on road surface details, and effectively reduce bumps and vibrations, this embodiment proposes a CDC active suspension control system. Please refer to... Figure 1 - Figure 6This system can respond more accurately to changes in road conditions, providing drivers with more nuanced road feedback and effectively reducing vehicle bumps and vibrations during driving. The system includes: a microprocessor module 1; a sensor module 2 for collecting acceleration data; a constant current damping module 3 for current control and signal processing; and a valve control module 4. The sensor module 2 consists of the following interfaces: FR_WhlSr_IN, FL_WhlSr_IN, PWM / ADI / PSI5+_7_IN, PWM / AD2 / PSI5_7_IN, PWM / AD3 / PSI5+_8_IN, PWM / AD4 / PSI5_8_IN, PWM / ADS / PSI5+_9_IN, PWM / AD6 / PSI5_9_IN, PWM / AD_7_IN, current-limiting resistors R28-R36, FR_AD interface, FL_AD interface, and AD1. The system consists of four interfaces: AD1_OUT, AD2_OUT, AD3_OUT, AD4_OUT, ADS_OUT, AD6_OUT, and AD7_OUT. The FR_WhlSr_IN, FL_WhlSr_IN, PWM / ADI / PSI5+_7_IN, PWM / AD2 / PSI5_7_IN, PWM / AD3 / PSI5+_8_IN, PWM / AD4 / PSI5_8_IN, PWM / ADS / PSI5+_9_IN, PWM / AD6 / PSI5_9_IN, and PWM / AD_7_IN interfaces are connected to the FR_AD interface, FL_AD interface, and AD1_OUT interface respectively via current-limiting resistors R28-R36. The constant current damping module 3 consists of a constant current dedicated driver chip U5, an external power supply, and a current-limiting resistor R74. The external power supply is connected to the BAT interface of the constant current dedicated driver chip U5 through the current-limiting resistor R74. The POS0 and ENG0 interfaces of the constant current dedicated driver chip U5 are connected to the valve control module 4, which consists of solenoid valve interfaces FR+ and FR-, a MOSFET, and a sampling resistor R89. The POS0 and ENG0 interfaces of the constant current dedicated driver chip U5 are connected to both sides of the sampling resistor R89. The solenoid valve interface FR+ is connected to the solenoid valve interface FR- through the MOSFET and resistor R89. The microprocessor module 1 consists of a chip control power supply, power supply current-limiting resistors R75, R80, and R81, and a microprocessor chip.The control power supply is connected to the SYS_BUTTON, SYS_WAKEUP0 / PMU_WAKEUP0 / TM_TAMPER3, and SYS_WAKEUP1 / PMU_WAKEUP0 / TM_TAMPER2 interfaces of the microprocessor chip via current-limiting resistors R81, R80, and R75, respectively. The suspension control system also includes a communication module 5, which consists of communication chips. The constant current dedicated driver chip U5 is model TLE7242, the microprocessor chip is model E3640-AGKAA, and the communication chip is model TLE9278.

[0024] The sensor module 2 of this invention has an output voltage range of 0.5–4.5V and a gravitational acceleration range of -13.3g–13.3g. Since the sampling port of the microprocessor module 1 can only withstand a maximum voltage of 3.3V, a resistor voltage divider method is used to reduce the voltage value of the sensor module 2 input to the microprocessor module 1 by a factor of 2. A TVS diode PESD24VL1BA is used in the circuit to prevent sensor or controller component failure due to lightning strikes and surges. The microprocessor module 1 is a new generation of high-performance microcontroller product designed for automotive safety-related applications. The entire product series integrates ARM Cortex R5 and ARM Cortex R52+ CPUs with up to 4 pairs of lockstep master cores. The highest-spec product features nearly 5MB of on-chip SRAM and up to 16MB of high-performance embedded memory, meeting the growing demands of automotive applications for computing power and memory.

[0025] The E3640-MCU in microprocessor module 1 integrates a rich set of communication peripherals, such as CAN-FD, LIN, FlexRay, USB, and Gigabit Ethernet TSN, enabling seamless system integration into automotive systems at a cost-effective system BOM. The built-in information security module integrates a true random number generator, AES, RSA, ECC, SHA, and hardware accelerators compliant with national and commercial cryptographic standards 2 / 3 / 4 / 9. This integration of information security functions meets the needs of applications such as secure boot, secure communication, and secure firmware updates. The product can meet information security requirements exceeding Full-EVITA level. The MCU collects wheel acceleration information, vehicle body acceleration information, and vehicle CAN message information. It processes the received data using algorithms to control the current of the shock absorber solenoid valve in real time, adjusting the shock absorber damping. The constant current damping module 3 and valve control module 4 mainly use the TLE7242 constant current dedicated driver chip, IPC100N04S5-1R7 MOSFET, and sampling resistors to form a constant current circuit. The MCU communicates with the vibration damper solenoid valve through the SPI interface. The MCU sends constant current commands through the SPI interface to control the constant current. The current information and fault diagnosis information (open circuit, short circuit) are read in real time through the SPI interface. The communication module 5 interface uses the Infineon TLE9278 chip, which has 4 channels of CAN / CANFD communication, but 2 channels of CAN / CANFD are actually used. The vehicle CAN module primarily enables communication with the vehicle's CAN bus, receiving CAN message information and HMI command information. It also sends controller status information via CAN. The CAN calibration module is used for real-time online modification of calibration parameters during the development phase, improving calibration development efficiency. Through the collaborative efforts of the microprocessor module, sensor module, constant current damping module, and valve control module, combined with a simple chassis structure, it performs the functions of traditional suspension control. While simplifying the structure and sensors and retaining the same functions, it also reduces the manufacturing complexity of the vehicle, reduces the number of sensors installed, and saves some manufacturing costs. Data from the vehicle acceleration sensor is processed by the algorithm in the microprocessor module, and various suspension mode commands are sent through the communication module via the human-machine interface. This causes the controller in the microprocessor module to output the control current of the shock absorber solenoid valve in real time, adjusting the shock absorber damping. This not only improves the comfort and handling stability of the vehicle but also simplifies the operation process, enhances the vehicle's adaptability to various road conditions, and significantly improves the driving experience for passengers.

[0026] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CDC active suspension control system comprising a micro processing module (1), characterized in that, The suspension control system further comprises a sensor module (2) for collecting acceleration data, a constant current damping module (3) for current control and signal processing, and a valve control module (4); The sensor module (2) is composed of an FR_WhlSr_IN interface, an FL_WhlSr_IN interface, a PWM / ADI / PSI5+_7_IN interface, a PWM / AD2 / PSI5_7_IN interface, a PWM / AD3 / PSI5+_8_IN interface, a PWM / AD4 / PSI5_8_IN interface, a PWM / ADS / PSI5+_9_IN interface, a PWM / AD6 / PSI5_9_IN interface, a PWM / AD_7_IN interface, current limiting resistors R28-R36, an FR_AD interface, an FL_AD interface, an AD1_OUT interface, an AD2_OUT interface, an AD3_OUT interface, an AD4_OUT interface, an ADS_OUT interface, an AD6_OUT interface, and an AD7_OUT interface; the FR_WhlSr_IN interface, the FL_WhlSr_IN interface, the PWM / ADI / PSI5+_7_IN interface, the PWM / AD2 / PSI5_7_IN interface, the PWM / AD3 / PSI5+_8_IN interface, the PWM / AD4 / PSI5_8_IN interface, the PWM / ADS / PSI5+_9_IN interface, the PWM / AD6 / PSI5_9_IN interface, and the PWM / AD_7_IN interface are respectively connected to the FR_AD interface, the FL_AD interface, the AD1_OUT interface, the AD2_OUT interface, the AD3_OUT interface, the AD4_OUT interface, the ADS_OUT interface, the AD6_OUT interface, and the AD7_OUT interface through the current limiting resistors R28-R36.

2. The suspension control system according to claim 1, characterized by, The constant current damping module (3) is composed of a constant current special driving chip U5, an external power supply, and a current limiting resistor R74; the external power supply is connected to the BAT interface of the constant current special driving chip U5 through the current limiting resistor R74; the POS0 interface and the ENG0 interface of the constant current special driving chip U5 are connected to the valve control module (4).

3. The suspension control system of claim 2, wherein The valve control module (4) is composed of solenoid valve interfaces FR+ and FR-, a MOS tube, and a sampling resistor R89; the POS0 interface and the ENG0 interface of the constant current special driving chip U5 are connected to both sides of the sampling resistor R89; the solenoid valve interface FR+ is connected to the solenoid valve interface FR- through the MOS tube and the resistor R89.

4. The suspension control system according to claim 3, characterized by, The micro processing module (1) is composed of a chip control power supply, power supply current limiting resistors R75, R80, and R81, and a micro processing chip; the control power supply is connected to the SYS_BUTTON interface, the SYS_WAKEUP0 / PMU_WAKEUP0 / TM_TAMPER3 interface, and the SYS_WAKEUP1 / PMU_WAKEUP0 / TM_TAMPER2 interface of the micro processing chip through the current limiting resistors R81, R80, and R75, respectively.

5. The suspension control system according to claim 4, characterized by The suspension control system further comprises a communication module (5) for communication, which is composed of a communication chip.

6. The suspension control system of claim 5, wherein The model of the constant current special drive chip U5 is TLE7242, the model of the micro processing chip is E3640-AGKAA, and the model of the communication chip is TLE9278.

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