WO2022166499A1 - Procédé et appareil de commande de mode à quatre roues motrices à faible vitesse, support de stockage et dispositif électronique - Google Patents

Procédé et appareil de commande de mode à quatre roues motrices à faible vitesse, support de stockage et dispositif électronique Download PDF

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Publication number
WO2022166499A1
WO2022166499A1 PCT/CN2021/143784 CN2021143784W WO2022166499A1 WO 2022166499 A1 WO2022166499 A1 WO 2022166499A1 CN 2021143784 W CN2021143784 W CN 2021143784W WO 2022166499 A1 WO2022166499 A1 WO 2022166499A1
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Prior art keywords
vehicle
speed
transfer case
low
torque
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PCT/CN2021/143784
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English (en)
Chinese (zh)
Inventor
王建
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长城汽车股份有限公司
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Publication of WO2022166499A1 publication Critical patent/WO2022166499A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/119—Conjoint control of vehicle sub-units of different type or different function including control of all-wheel-driveline means, e.g. transfer gears or clutches for dividing torque between front and rear axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
    • B60W40/105—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1005—Transmission ratio engaged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/20—Steering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units

Definitions

  • the present disclosure relates to the technical field of vehicles, and in particular, to a low-speed four-wheel-drive mode control method, device, storage medium and electronic device.
  • the transfer case is an important component of the automobile power system. Its main function is to distribute the power to the front and rear drive shafts, and transmit the torque to the wheels of the vehicle through the main reducer and drive shaft, thereby realizing four-wheel drive.
  • the drive of the transfer case includes high-speed drive mode, low-speed drive mode and neutral mode (referred to as N gear).
  • the high-speed drive mode includes four-wheel drive mode (referred to as 4WD mode) and high-speed two-wheel drive mode (referred to as 2H mode); Low-speed four-wheel drive mode (referred to as 4L mode); in N gear mode, the input shaft of the transfer case is disconnected from the output shaft.
  • the transfer case When the transfer case is in 4L mode, the transfer case will amplify the output torque of the transmission by more than 2.5 times, so that the front and rear axles can obtain greater input torque, so as to improve the dynamic performance of the vehicle, so that the vehicle can calmly face the non-paved road and Road conditions with complex terrain.
  • the present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.
  • the first object of the present disclosure is to propose a low-speed four-wheel drive mode control method, so as to solve the problem of vehicle occurrence caused by the obvious steering braking of the vehicle after the vehicle speed exceeds the set vehicle speed when the transfer case of the vehicle is in the 4L mode. Resonance or the vehicle rolls over when turning, resulting in a technical problem of a safety accident.
  • the second objective of the present disclosure is to provide a low-speed four-wheel-drive mode control device.
  • the embodiment of the first aspect of the present disclosure proposes a low-speed four-wheel drive mode control method
  • the method includes:
  • the transfer case is controlled to distribute torque to the front and rear wheels of the vehicle according to the angle of the steering wheel.
  • the method further includes:
  • the transfer case is controlled to release torque for a preset period of time.
  • the controlling of the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel includes:
  • the transfer case of the vehicle is a switching condition for the low-speed four-wheel drive mode, including:
  • the method when the vehicle speed is greater than a vehicle speed threshold, the method further includes: outputting alarm information to remind the driver to slow down.
  • the outputting the alarm information includes: controlling an indicator light of an instrument of the vehicle to flash at a preset frequency; or,
  • the indicator lights of the instruments controlling the vehicle are illuminated in a preset color.
  • the embodiment of the first aspect of the present disclosure proposes a low-speed four-wheel drive mode control method.
  • the gear position information of the vehicle is obtained, and when the vehicle is in reverse gear or driving gear, the gear position information is obtained.
  • the speed of the vehicle when the vehicle speed is greater than the vehicle speed threshold, adjust the transfer case from the hard locking of the low-speed four-wheel drive mode to the intelligent locking, obtain the angle of the steering wheel of the vehicle, and control the transfer case to allocate the vehicle's speed according to the angle of the steering wheel.
  • the torque of the front and rear wheels avoids the resonance of the vehicle when the steering and braking are obvious and the rollover when the vehicle turns, reducing the probability of safety accidents.
  • a second aspect of the present disclosure provides a low-speed four-wheel drive mode control device, which is applied to a vehicle, and the device includes:
  • a first acquisition module configured to acquire a gear position signal of the vehicle when the transfer case of the vehicle is in a low-speed four-wheel drive mode
  • a second obtaining module configured to obtain the vehicle speed of the vehicle when the vehicle is in a reverse gear or a drive gear
  • a first execution module configured to adjust the transfer case from a hard lock to an intelligent lock in a low-speed four-wheel drive mode when the vehicle speed is greater than a vehicle speed threshold, and obtain the angle of the steering wheel of the vehicle ;
  • a second execution module is configured to control the transfer case to distribute torque to the front and rear wheels of the vehicle according to the angle of the steering wheel.
  • the first execution module is further configured to control the transfer case to release torque within a preset time period when the vehicle is in neutral.
  • the first execution module is further configured to control the transfer case to release torque within a preset time period when the vehicle is in neutral.
  • the embodiment of the second aspect of the present disclosure provides a low-speed four-wheel drive mode control device.
  • the gear position information of the vehicle is obtained, and when the vehicle is in the reverse gear or the drive gear, the gear information is obtained.
  • the speed of the vehicle when the vehicle speed is greater than the vehicle speed threshold, adjust the transfer case from the hard locking of the low-speed four-wheel drive mode to the intelligent locking, obtain the angle of the steering wheel of the vehicle, and control the transfer case to allocate the vehicle's speed according to the angle of the steering wheel.
  • the torque of the front and rear wheels avoids the resonance of the vehicle when the steering and braking are obvious and the rollover when the vehicle turns, reducing the probability of safety accidents.
  • a third aspect of the present disclosure is a computing processing device, comprising:
  • One or more processors when the computer readable code is executed by the one or more processors, the computing processing device executes the low-speed four-wheel drive mode control method proposed by the embodiment of the first aspect of the present disclosure.
  • a fourth aspect of the present disclosure provides a computer program, including computer-readable codes, which, when the computer-readable codes are executed on a computing and processing device, cause the computing and processing device to execute the first step of the present disclosure.
  • the low-speed four-wheel drive mode control method proposed by the embodiment is not limited to the low-speed four-wheel drive mode control method.
  • the fifth aspect of the present disclosure provides a computer-readable storage medium, in which the computer program provided by the fourth aspect of the present disclosure is stored.
  • FIG. 1 provides a flowchart of a method for controlling a low-speed four-wheel drive mode according to an embodiment of the present disclosure
  • FIG. 2 provides a control block diagram of a low-speed four-wheel drive mode control method according to an embodiment of the present disclosure
  • FIG. 3 provides another flowchart of a method for controlling a low-speed four-wheel drive mode according to an embodiment of the present disclosure
  • FIG. 4 provides a block diagram of a low-speed four-wheel drive mode control device according to an embodiment of the present disclosure
  • FIG. 5 provides a schematic structural diagram of a computing processing device according to an embodiment of the present disclosure
  • FIG. 6 provides a schematic diagram of a storage unit for portable or fixed program code implementing the method according to the present disclosure according to an embodiment of the present disclosure.
  • the low-speed four-wheel drive mode control method of the present disclosure can be applied to vehicles.
  • the transfer case is an important component of the automobile power system. Its main function is to distribute the power to the front and rear drive shafts, and transmit the torque to the wheels of the vehicle through the main reducer and drive shaft, thereby realizing four-wheel drive.
  • the transfer case of the vehicle includes high-speed driving mode, low-speed driving mode and neutral mode (referred to as N gear).
  • the high-speed driving mode includes four-wheel drive mode (referred to as 4WD mode) and high-speed two-wheel drive mode (referred to as 2H mode); Low-speed four-wheel drive mode (referred to as 4L mode); in the N gear state, the input shaft of the transfer case is disconnected from the output shaft.
  • the transfer case When the vehicle is in 4L mode, the transfer case will amplify the output torque of the transmission by more than 2.5 times, so that the front and rear axles can obtain greater input torque, so as to improve the dynamic performance of the vehicle, so that when the transfer case of the vehicle is in 4L mode, the vehicle can Facing unpaved roads and road conditions with complex terrain calmly.
  • the transfer case When the vehicle is driving on relatively smooth road conditions, the transfer case is switched to the high-speed driving mode, which makes the vehicle have better fuel economy. Through the mode switching of the transfer case, the power and fuel economy of the vehicle under different road conditions can be improved.
  • the steering braking of the vehicle will obviously cause the vehicle to resonate or roll over when the vehicle turns, resulting in safety accidents;
  • the mechanical structure limit makes the primary friction group produce abnormal impact noise when reversing, resulting in damage to the transfer case and the drive shaft, and the tires of the vehicle are seriously worn.
  • FIG. 1 is a flowchart of a low-speed four-wheel drive mode control method according to an exemplary embodiment. As shown in Figure 1, the method includes the following steps.
  • step S101 when the transfer case of the vehicle is in a low-speed four-wheel drive mode, a gear position signal of the vehicle is acquired.
  • step S102 when the vehicle is in reverse gear or drive gear, the vehicle speed of the vehicle is acquired.
  • step S103 when the vehicle speed is greater than the vehicle speed threshold, the transfer case is adjusted from the hard lock to the intelligent lock in the low-speed four-wheel drive mode, and the angle of the steering wheel of the vehicle is obtained.
  • step S104 the transfer case is controlled to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel.
  • the vehicle speed threshold may be preset according to the vehicle speed during the actual operation of the vehicle, which is not specifically limited in the present disclosure.
  • the transfer case of the vehicle when the transfer case of the vehicle is in the low-speed four-wheel drive mode, the gear position information of the vehicle is obtained, when the vehicle is in reverse gear or the driving gear, the vehicle speed is obtained, and the When the vehicle speed is greater than the vehicle speed threshold, adjust the transfer case from hard locking in low-speed four-wheel drive mode to intelligent locking, obtain the angle of the steering wheel of the vehicle, and control the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel. It avoids the resonance of the vehicle when the steering brake is obvious and the rollover when the vehicle turns, and reduces the probability of safety accidents.
  • the transfer case When the vehicle is in low-speed four-wheel drive mode and the vehicle is in neutral, the transfer case is controlled to release torque within a preset period of time to eliminate reverse/forward staggering or steering. Since the torque is always in a loaded state, the mechanical structure limit makes the When the primary friction group is reversed, the abnormal impact sound is generated, which avoids damage to the transfer case and drive shaft and reduces the degree of tire wear.
  • the transfer case control unit obtains the 4L mode switch signal through the 4L mode switch, obtains the vehicle speed signal through the body electronic stability system, obtains the steering wheel angle signal through the combination switch assembly, and obtains the vehicle through the gearbox.
  • the gear position signal and then control the transfer case, and interact with the vehicle's instrumentation.
  • the switching condition for the transfer case of the vehicle to be the low-speed four-wheel drive mode may include:
  • the cut-in and cut-out of the low-speed four-wheel drive mode of the transfer case (hereinafter referred to as the 4L mode) is mainly realized by the planetary gear train, the coupling sleeve, and the shifting motor.
  • the transfer case When the transfer case is in high-speed mode, the torque from the gearbox is transmitted to the transfer case input shaft, the high-low gear combination sleeve, and the rear output shaft.
  • the transfer case is in 4L mode, the torque from the gearbox is transmitted to the transfer case input shaft, sun gear, planetary gear, planet carrier, high and low gear combination sleeve, and rear output shaft, and the torque is amplified.
  • step S102 when the vehicle is in reverse gear, step on the accelerator pedal to reverse, the driving wheel drives the driven wheel to rotate, and the torque is transmitted in reverse; when the vehicle is in the driving gear, step on the accelerator pedal to move forward, and the driving wheel drives the slave The driving wheel rotates, and the torque is transmitted in the positive direction.
  • the vehicle's speed in 4L mode exceeds the vehicle speed threshold, the vehicle will resonate, resulting in traffic accidents.
  • the method may further include: outputting alarm information to remind the driver to slow down.
  • an alarm message is output to remind the driver to slow down to avoid safety accidents.
  • outputting the alarm information may include: the indicator light of the instrument controlling the vehicle flashes at a preset frequency; or,
  • the indicator lights of the instruments that control the vehicle light up in a preset color are used to control the vehicle light up in a preset color.
  • the preset frequency may be preset according to the actual driving light alarm, which is not specifically limited in the present disclosure.
  • the indicator light of the instrument that controls the vehicle flashes at a frequency of 3 times/second; or the indicator light of the instrument panel that controls the vehicle is Bright orange. Thereby reminding the driver to slow down to avoid safety accidents.
  • controlling the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel may include:
  • the control transfer case distributes the torque to the front and rear wheels of the vehicle according to a predetermined relationship between the angle of the steering wheel and the torque of the front wheels of the vehicle, wherein the angle of the steering wheel is inversely proportional to the torque of the front wheels of the vehicle.
  • control transfer case reduces the torque distributed to the front wheels of the vehicle according to the angle of the steering wheel, the inverse relationship between the angle of the steering wheel and the torque of the front wheels of the vehicle, and increases the reduced torque to the rear wheels of the vehicle .
  • the transfer case of the vehicle when the transfer case of the vehicle is in 4LAuto mode and the vehicle speed is greater than 40Km/h, when the steering wheel angle is 0°, the transfer case distributes 90% of the torque to the front wheels of the vehicle, and the rest of the torque is distributed to the vehicle's front wheels.
  • Rear wheels when the steering wheel angle is 90°, the transfer case distributes 45% of the torque to the front wheels of the vehicle, and the rest of the torque is distributed to the rear wheels of the vehicle; when the steering wheel angle is 180°, the transfer case distributes to the front wheels of the vehicle 25% of the torque is distributed to the rear wheels of the vehicle; when the steering wheel angle is 170°, the transfer case distributes 10% of the torque to the front wheels of the vehicle, and the rest of the torque is distributed to the rear wheels of the vehicle. Realize the differential speed between axles, reduce the steering braking of the vehicle and the risk of rollover.
  • the vehicle's four-wheel drive control unit collects the engine accelerator opening signal, engine speed signal and four-wheel speed and other signals, it determines whether the vehicle is slipping or whether the vehicle is turning, and then sends a command to TOD (Torque-On-Demand, torque on demand four drive) solenoid coil.
  • the electromagnetic coil generates different electromagnetic forces according to the magnitude of the current.
  • the electromagnetic force controls the adsorption force between the electromagnetic coil and the pressure plate, and is transmitted to the wet friction plate mechanism through the pressure amplifier to control the tightness of the friction plate to transmit torque and control the torque. the size of.
  • the transmitted and controllable torque is transmitted to the front drive shaft and the front drive axle through the sprocket chain.
  • the method may further include: when the vehicle is in neutral gear, controlling the transfer case to release torque within a preset time period.
  • the preset duration may be preset according to the magnitude of the torque in the actual operation of the vehicle, which is not specifically limited in the present disclosure.
  • the release current of the transfer case solenoid coil is controlled for 1s to 3s to realize the release of the transfer case.
  • Torque eliminates the abnormal sound of the main and driven wheels caused by the mechanical structure, avoids the damage of the transfer case and the drive shaft, and reduces the tire wear of the vehicle.
  • the transfer case meets the switching conditions of the 4L mode
  • the transfer case is controlled to switch to the 4LLock mode to determine whether the vehicle is in the D/R gear and the vehicle speed is greater than zero; in the case that the transfer case does not meet the switching conditions of the 4L mode Under the 4L switching conditions, the driver is reminded through the vehicle's instrumentation that the 4L switching conditions are not met.
  • the transfer case solenoid current is loaded to the maximum, the gearbox detects the vehicle gear and judges whether the vehicle is in neutral; when the vehicle is not in the D/R gear, the vehicle speed is obtained. Less than or equal to zero, the transfer case solenoid is not loaded with current.
  • the transfer case solenoid releases current for 1s to 3s; when the vehicle is not in neutral gear, the current load of the transfer case solenoid coil remains unchanged to determine whether the vehicle speed is greater than the vehicle speed threshold.
  • the transfer case When the vehicle speed is greater than the vehicle speed threshold, adjust the transfer case from 4LLock to 4LAuto, control the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel, and control the indicator light of the instrument of the vehicle to flash at a preset frequency ; Or, the indicator light of the instrument that controls the vehicle lights up with a preset color; when the vehicle speed is less than or equal to the vehicle speed threshold, the control transfer case maintains the torque distribution in the 4LLock mode.
  • the present disclosure also proposes a low-speed four-wheel drive mode control device.
  • the low-speed four-wheel drive mode control device 1300 includes a first acquisition module 1301 , a second acquisition module 1302 , and a first execution module 1303 and the second execution module 1304.
  • the first obtaining module 1301 is configured to obtain the gear position signal of the vehicle when the transfer case of the vehicle is in the low-speed four-wheel drive mode;
  • the second obtaining module 1302 is configured to obtain the vehicle speed of the vehicle when the vehicle is in a reverse gear or a drive gear;
  • the first execution module 1303 is configured to adjust the transfer case from hard locking to intelligent locking in the low-speed four-wheel drive mode, and obtain the angle of the steering wheel of the vehicle when the vehicle speed is greater than the vehicle speed threshold;
  • the second actuation module 1304 is configured to control the transfer case to distribute torque to the front and rear wheels of the vehicle according to the angle of the steering wheel.
  • the low-speed four-wheel drive mode control device acquires the gear position information of the vehicle when the transfer case of the vehicle is in the low-speed four-wheel drive mode, acquires the vehicle speed when the vehicle is in reverse gear or drive gear, and When the vehicle speed is greater than the vehicle speed threshold, adjust the transfer case from hard locking in low-speed four-wheel drive mode to intelligent locking, obtain the angle of the steering wheel of the vehicle, and control the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel. It avoids the resonance of the vehicle when the steering brake is obvious and the rollover when the vehicle turns, and reduces the probability of safety accidents.
  • the transfer case When the vehicle is in low-speed four-wheel drive mode and the vehicle is in neutral, the transfer case is controlled to release torque within a preset period of time to eliminate reverse/forward staggering or steering. Since the torque is always in a loaded state, the mechanical structure limit makes the When the primary friction group is reversed, the abnormal impact sound is generated, which avoids damage to the transfer case and drive shaft and reduces the degree of tire wear.
  • the first obtaining module 1301 is further configured to switch the transfer case of the vehicle to the low-speed four-wheel drive mode when the vehicle is in neutral gear and the vehicle speed is zero.
  • the first execution module 1303 is configured to output alarm information to remind the driver to slow down when the vehicle speed is greater than the vehicle speed threshold.
  • the first execution module 1303 is configured to control the indicator light of the instrument of the vehicle to flash at a preset frequency; or,
  • the indicator lights of the instruments that control the vehicle light up in a preset color are used to control the vehicle light up in a preset color.
  • the second execution module 1304 is configured to control the transfer case to distribute the torque of the front and rear wheels of the vehicle according to the angle of the steering wheel, the angle of the steering wheel and the torque of the front wheels of the vehicle, wherein the angle of the steering wheel and the torque of the front wheels of the vehicle are The torque to the front wheels of the vehicle is inversely proportional.
  • the second acquisition module 1302 is configured to control the transfer case to release torque within a preset time period when the vehicle is in neutral.
  • the embodiments described in the specification are all preferred embodiments, and the parts involved are not necessarily necessary for the present invention, for example, the first execution module and the second The execution modules may be mutually independent devices or the same device during specific implementation, which is not limited in the present disclosure.
  • the present disclosure also proposes a computing processing device, including:
  • One or more processors when the computer readable code is executed by the one or more processors, the computing processing device executes the aforementioned low-speed four-wheel drive mode control method.
  • the present disclosure also proposes a computer program, comprising computer-readable codes, when the computer-readable codes are executed on a computing processing device, causing the computing processing device to execute the aforementioned low-speed four-wheel drive mode Control Method.
  • the present disclosure also proposes a computer-readable storage medium in which the aforementioned computer program is stored.
  • FIG. 5 provides a schematic structural diagram of a computing processing device according to an embodiment of the present disclosure.
  • the computing processing device typically includes a processor 1110 and a computer program product or computer readable medium in the form of a memory 1130 .
  • the memory 1130 may be electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1130 has storage space 1150 for program code 1151 for performing any of the method steps in the above-described methods.
  • the storage space 1150 for program codes may include various program codes 1151 for implementing various steps in the above methods, respectively.
  • the program codes can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as shown in FIG. 6 .
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the storage 1130 in the server of FIG. 5 .
  • the program code may, for example, be compressed in a suitable form.
  • the storage unit includes computer readable code 1151', i.e. code readable by a processor such as 1110, for example, which when executed by a server, causes the server to perform the various steps in the methods described above.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
  • a "computer-readable medium” can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or apparatus.
  • computer readable media include the following: electrical connections with one or more wiring (electronic devices), portable computer disk cartridges (magnetic devices), random access memory (RAM), Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM).
  • the computer readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, followed by editing, interpretation, or other suitable medium as necessary process to obtain the program electronically and then store it in computer memory.
  • portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
  • various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.
  • the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like.

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  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
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  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

Procédé et appareil de commande de mode à quatre roues motrices (4L) à basse vitesse, support de stockage et dispositif électronique, résolvant le problème technique selon lequel, lorsqu'une boîte de transfert d'un véhicule est en mode 4L, un véhicule à une vitesse dépassant une vitesse réglée peut résonner en raison d'une direction et d'un freinage évidents ou se retourner lors d'un virage, ce qui entraîne un accident de sécurité. Le procédé consiste : lorsqu'une boîte de transfert d'un véhicule est dans un mode 4L, à obtenir un signal de position de vitesse du véhicule (S101) ; lorsque le véhicule est en marche arrière ou en vitesse d'entraînement, à obtenir la vitesse du véhicule (S102) ; lorsque la vitesse du véhicule est supérieure à un seuil de vitesse de véhicule, à régler la boîte de transfert d'un verrouillage dur 4L à un verrouillage intelligent, et à obtenir l'angle d'un volant du véhicule (S103) ; et à commander la boîte de transfert pour distribuer le couple des roues avant et arrière du véhicule en fonction de l'angle du volant (S104). En commandant la boîte de transfert pour distribuer le couple des roues avant et arrière du véhicule en fonction de l'angle du volant, la résonance du véhicule lorsque la direction et le freinage sont évidents et le retournement lorsque le véhicule effectue un virage sont empêchés, ce qui permet de réduire la probabilité d'accidents de sécurité.
PCT/CN2021/143784 2021-02-03 2021-12-31 Procédé et appareil de commande de mode à quatre roues motrices à faible vitesse, support de stockage et dispositif électronique WO2022166499A1 (fr)

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