CN117565961A - Control method of vehicle steering system, vehicle steering system and vehicle - Google Patents

Control method of vehicle steering system, vehicle steering system and vehicle Download PDF

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Publication number
CN117565961A
CN117565961A CN202410011783.7A CN202410011783A CN117565961A CN 117565961 A CN117565961 A CN 117565961A CN 202410011783 A CN202410011783 A CN 202410011783A CN 117565961 A CN117565961 A CN 117565961A
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CN
China
Prior art keywords
steering
vehicle
type
state
type steering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410011783.7A
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Chinese (zh)
Inventor
裘杭锋
刘冬
傅虹
张茜
俞文彬
金垣镐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quanxing Machining Group Co Ltd
Original Assignee
Quanxing Machining Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quanxing Machining Group Co Ltd filed Critical Quanxing Machining Group Co Ltd
Priority to CN202410011783.7A priority Critical patent/CN117565961A/en
Publication of CN117565961A publication Critical patent/CN117565961A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
    • B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062—Details, component parts
    • B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The present disclosure relates to a control method of a vehicle steering system, a vehicle steering system and a vehicle, the control method comprising: acquiring state parameters of a first type steering part in a vehicle steering system and/or a driving mode of the vehicle, wherein the first type steering part comprises an electro-hydraulic power-assisted steering system; determining whether the first type steering part is in a preset state according to the state parameters; and if the first type steering part is in a preset state and/or the vehicle is in a preset driving mode, controlling the first type steering part to reduce the provided steering assistance and controlling the second type steering part to provide steering assistance to assist steering, wherein the second type steering part comprises an electric power steering system. The first type steering part with the electro-hydraulic power-assisted steering system is used as a first-choice steering power source, and the second type steering part with the electro-hydraulic power-assisted steering system is used as a standby steering power source, so that the vehicle steering system not only can provide larger steering torque, but also has an active steering function.

Description

Control method of vehicle steering system, vehicle steering system and vehicle
Technical Field
The disclosure relates to the technical field of vehicle active steering, in particular to a control method of a vehicle steering system, the vehicle steering system and a vehicle.
Background
At present, an Electric Power Steering (EPS) system is mainly used on micro and light commercial vehicles, and cannot generate enough torque to provide power for active steering of medium and heavy commercial vehicles due to the defect of insufficient power assistance of an EPS driving force.
The electronic hydraulic power steering system (EHPS) is widely applied to medium and heavy vehicles, but has the problems of high rotating speed of a hydraulic steering motor, large noise, energy saving, heavy steering of a steering wheel and the like, influences the steering operability of the automobile, and reduces the portability and the flexibility of the steering system of the automobile.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a control method of a vehicle steering system, and a vehicle.
According to a first aspect of the present disclosure, there is provided a control method of a vehicle steering system, including:
acquiring state parameters of a first type steering part and/or a driving mode of a vehicle in the vehicle steering system, wherein the first type steering part comprises an electro-hydraulic power-assisted steering system;
determining whether the first type steering part is in a preset state according to the state parameter;
and if the first type steering part is in a preset state and/or the vehicle is in a preset driving mode, controlling the first type steering part to reduce the provided steering assistance and controlling the second type steering part of the vehicle steering system to provide steering assistance so as to assist steering, wherein the second type steering part comprises an electric power steering system.
In some embodiments, the preset state of the first type steering part includes an overload state, and if the first type steering part is in the overload state, controlling the second type steering part to assist steering includes:
controlling the first type steering portion to reduce the steering assist force to greater than or equal to 50%, and controlling the second type steering portion to supplement the steering assist force reduced by the first type steering portion.
In some embodiments, if the temperature of the first type of diverter exceeds a preset threshold, determining that the first type of diverter is in the overload condition;
wherein the preset threshold value is 75-85 ℃.
In some embodiments, the preset state of the first type steering part further includes a fault state, and if the first type steering part is in the fault state, controlling the second type steering part to assist steering includes:
the second type steering section is controlled to provide at least 50% steering assist.
In some embodiments, if the vehicle is in the preset driving state, controlling the first type steering portion to reduce the steering assistance provided and controlling the second type steering portion to assist steering includes:
the first type steering section is controlled to provide at least 50% steering assist and the second type steering section is controlled to supplement the remaining steering assist.
In some embodiments, the preset driving state includes an automatic driving state and an assisted driving state.
According to a second aspect of the present disclosure, there is provided a vehicle steering system, applied to a vehicle, including:
a first type of steering section as a preferred steering power source for the vehicle steering system, the first type of steering section comprising an electro-hydraulic power steering system;
a second type steering section as a spare steering power source of the vehicle steering system, the second type steering section including an electric power steering system;
and a control part for controlling the second type steering part to provide auxiliary steering according to the state of the first type steering part and/or the driving state of the vehicle.
In some embodiments, a hydraulic accumulator is disposed in the first type of steering section.
According to a third aspect of the present disclosure there is provided a vehicle comprising a steering wheel and wheels, and a vehicle steering system as described in the second aspect, the vehicle steering system being connected to the steering wheel and the wheels, the steering wheel being for output.
In some embodiments, the vehicle further comprises a steering wheel coupled to the front wheels of the vehicle; and/or the number of the groups of groups,
the first type steering part and the second type steering part are arranged on two sides of the steering gear.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the first type steering part with the electro-hydraulic power-assisted steering system is used as a first-choice steering power source, and the second type steering part with the electro-hydraulic power-assisted steering system is used as a standby steering power source, so that the vehicle steering system not only can provide larger steering torque, but also has an active steering function. And when the first type steering part fails, the second type steering part can also be used as a standby steering power source, so that the safety and reliability of the vehicle steering system are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a control method of a vehicle steering system according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a control method of a vehicle steering system according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating a control method of a vehicle steering system according to an exemplary embodiment.
Fig. 4 is a flowchart illustrating a control method of a vehicle steering system according to an exemplary embodiment.
FIG. 5 is a schematic diagram of a vehicle, according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
In the related art, an Electric Power Steering (EPS) system is mainly used on micro-commercial vehicles and light commercial vehicles, and cannot generate enough torque to provide power for active steering of the middle-heavy commercial vehicles due to the defect of insufficient power assistance of an EPS driving force.
The electronic hydraulic power steering system (EHPS) is widely applied to medium and heavy vehicles, but has the problems of high rotating speed of a hydraulic steering motor, large noise, heavy steering of a steering wheel and the like, influences steering operability, and reduces the portability and flexibility of the steering system.
In order to solve the above-mentioned problems, the embodiments of the present disclosure provide a control method of a vehicle steering system, and a vehicle, which enable the vehicle steering system to provide not only a large steering torque but also an active steering function by using a first type steering section having an electro-hydraulic power steering system as a preferred steering power source and a second type steering section having an electric power steering system as a backup steering power source. And when the first type steering part fails, the second type steering part can also be used as a standby steering power source, so that the safety and reliability of the vehicle steering system are improved.
According to an exemplary embodiment of the present disclosure, as shown in fig. 1, an embodiment of the present disclosure provides a control method of a vehicle steering system, where the control method is used to control the vehicle steering system to improve the driving experience of a user, and in an example, the vehicle steering system provided by the embodiment of the present disclosure may be applied to a medium-to-large commercial vehicle, for example. The control method of the vehicle steering system includes the steps of:
step S101, acquiring a state parameter of a first type steering part in a steering system of a vehicle and/or a driving mode of the vehicle.
In this step, the state parameters of the first type steering section may be acquired by an electronic controller unit (Electronic control unit, abbreviated as ECU) in the vehicle, and the driving mode of the vehicle is acquired. The electronic controller unit is also called an automobile computer, and can judge the state of the automobile by utilizing various sensors and data acquisition and exchange of buses, control the running state of the automobile and realize other various functions of the automobile.
The vehicle steering system includes a first type steering portion, which may be an electro-hydraulic power steering system (EHPS) that is capable of providing a large steering torque, and therefore, for a medium-to-large vehicle, when the vehicle is in a normal driving mode and the first type steering portion is in a normal state, steering assistance of the vehicle may be provided entirely by the first type steering portion.
In one example, the electronic controller unit can obtain the temperature of a preset component in the first type of steering section, such as the temperature of the drive means of the first type of steering section, as a state parameter of the first type of steering section.
In this step, the driving modes of the vehicle may include driving modes such as normal driving (also referred to as conventional driving), assisted driving, and automatic driving.
Step S102, determining whether the first type steering part is in a preset state according to the state parameters.
In this step, the states of the first type steering part may include a normal state and an abnormal state, and in the embodiment of the present disclosure, the preset state of the first type steering part is the abnormal state, such as an overload state, a fault state, and the like. For example, when the first type steering portion is operated to generate heat so that the temperature rises, and when the temperature (i.e., the state parameter) is higher than a preset threshold value, it can be determined that the first type steering portion is in an overload state, and the first type steering portion is in an overload state for a long time so as to easily cause a reduction in service life.
Step S103, if the first type steering part is in a preset state and/or the vehicle is in a preset driving mode, controlling the first type steering part to reduce the provided steering power, and controlling the second type steering part of the vehicle steering system to provide steering power to assist steering.
In this step, when the first type steering unit is in the preset state, for example, the first type steering unit may be in overload operation, and if the first type steering unit is still only used to provide all steering assistance, the service life of the first type steering unit may be shortened, so that the first type steering unit may be controlled to reduce the output steering assistance, and the second type steering unit may be controlled to supplement the steering assistance to ensure that the steering assistance is in a safe interval.
The vehicle steering part further comprises a second type steering part, the second type steering part comprises an electric power steering system (EPS for short), and the first type steering part and the second type steering part have advantages, for example, when the vehicle is in an automatic driving mode and an auxiliary driving mode, the first type steering part does not have an active steering function, so that the second type steering part can be mobilized through the electronic controller unit to provide quasi-directional assistance.
It can be ascertained from the above that the first steering gear serves as a primary steering power source for the vehicle and the second steering gear serves as a backup steering power source for the vehicle, and that the steering power sources of the steering gears of the vehicle are adjusted, i.e. the magnitudes of the steering assistance provided by the first and second steering gears are allocated.
In the embodiment of the disclosure, the first type steering part with the electro-hydraulic power-assisted steering system is used as a first-choice steering power source, and the second type steering part with the electro-hydraulic power-assisted steering system is used as a standby steering power source, so that the vehicle steering system not only can provide larger steering torque, but also has an active steering function. And when the first type steering part fails, the second type steering part can also be used as a standby steering power source, so that the safety and reliability of the vehicle steering system are improved.
In one exemplary embodiment, as shown in fig. 2, a control method of a vehicle steering system may include the steps of:
step S201, acquiring a state parameter of a first type steering part in a steering system of a vehicle.
In this step, the electronic controller unit in the vehicle may acquire a state parameter of the first type steering section through the temperature sensor, that is, the state parameter of the first type steering section includes the temperature.
Step S202, determining whether the first type steering part is in a preset state according to the state parameters.
In this step, the current state of the first-type turning portion can be determined based on the detected temperature based on the higher heat generated when the load of the first-type turning portion is greater.
For example, when the temperature of the first-type steering portion is greater than or equal to a preset threshold, it may be determined that the first-type steering is in overload loading, and when the temperature of the first-type steering portion does not reach the preset threshold, it is in a normal state.
In one example, the preset threshold of temperature may be 75-85 ℃, and the preset threshold may be adaptively adjusted according to changes in the vehicle and environment.
Step S203, if the first type steering part is in an overload state, controlling the first type steering part to reduce to more than or equal to 50% of steering assistance, and controlling the second type steering part to supplement the steering assistance reduced by the first type steering part.
In this step, when the first type steering unit is in an overload state, the steering assist provided by the first type steering unit may be reduced, that is, the output power of the first type steering unit may be reduced. In order to ensure that the vehicle steering system can still provide sufficient steering assistance after the first type of steering section reduces steering assistance, the second type of steering section can be started by the electronic controller unit, and the steering assistance provided by the second type of steering section is the same as the steering assistance reduced by the first type of steering section.
The first type steering unit is in a normal state when the temperature of the first type steering unit is normally lower than a preset threshold value, and in this case, the steering power source of the first type steering unit can be adjusted according to the driving mode of the vehicle. In one example, if the first type steering section is in a normal state and the driving mode of the vehicle is a normal mode, no adjustment to the steering power source of the vehicle steering section is required, i.e., the first type steering section is maintained to provide 100% steering assistance to the vehicle.
In another exemplary embodiment, as shown in fig. 3, the control method of the vehicle steering system provided in the present embodiment may include the steps of:
step S301, acquiring a state parameter of a first type steering part in a steering system of a vehicle.
In this step, various state parameters of the first type steering section, such as the operating voltage, whether the CAN bus CAN be connected, etc., may be acquired by the electronic controller unit.
Step S302, determining whether the first type steering part is in a preset state according to the state parameters.
In the step, the state of the first type steering part can be judged by integrating various state parameters, and the system fault, the electrical appliance fault, the hardware fault, the software fault, the communication fault and the like of the first type steering part can be judged.
Step S303, if the first type steering part is in a fault state, controlling the second type steering part to provide at least 50% of steering assistance.
In this step, when the first type steering unit is in a fault state, the first type steering unit may not provide accurate steering assistance or may not provide steering assistance, so that a safety accident is likely to occur, and therefore, when the first type steering unit is in a fault state, it is necessary to close the first type steering unit by the electronic controller unit and activate the second type steering unit to provide steering assistance.
In one example, the second type of steering section may provide at least 50% steering assistance to enable a vehicle driver to park the vehicle in a safe position. The second type of steering section may, for example, provide steering assistance for more than 12 minutes.
In still another exemplary embodiment, as shown in fig. 4, the control method of the vehicle steering system provided in the present embodiment may further include the steps of:
step S401, acquiring a state parameter of a first type steering part in a steering system of a vehicle, and a driving mode of the vehicle.
In this step, the implementation manner of obtaining the state parameter may be the same as that of step S201 and step S301 in the foregoing embodiment, and will not be described herein. The driving modes of the vehicle may include a normal driving mode (also referred to as a conventional driving mode), an assisted driving mode, an automatic driving mode, and the like.
Step S402, determining whether the first type steering part is in a preset state according to the state parameter.
The implementation and principle of this step are the same as those of step S202 and step S302 in the foregoing embodiment, and will not be described here again.
Step S403, if the first type steering unit is not in the preset state and the vehicle is in the preset driving mode, controlling the first type steering unit to provide at least 50% of the steering assistance and controlling the second type steering unit to supplement the remaining steering assistance.
In this step, the preset driving modes of the vehicle include an auxiliary driving mode (Advanced Driving Assistance System, abbreviated as ADAS) and an automatic driving mode. In the driving process of the automobile, the auxiliary driving mode can utilize various sensors (millimeter wave radar, laser radar, single/binocular cameras and satellite navigation) arranged on the automobile to instantly sense surrounding environments, collect data, identify, detect and track static and dynamic objects, and combine with navigator map data to perform systematic operation and analysis, so that a driver can perceive possible danger in advance, and the comfort and safety of driving of the automobile are effectively increased. And the automatic driving mode can sense the surrounding environment through the sensor, make path planning and control the vehicle to run according to the path.
The first type of steering section is not in the preset state, i.e. the first type of steering section is not in the overload state and the fault state.
As can be seen from the above, when the first type steering section is in a normal state and the vehicle is in the assisted driving mode or the automatic driving mode, the first type steering section can be controlled by the electronic controller unit to reduce the provided steering assistance and activate the second type steering section, and the second type steering section provides the remaining steering assistance, so that the vehicle steering system provides a total of 100% steering assistance.
Based on the disclosure of the foregoing embodiments of the present disclosure, it may be appreciated that when the first type steering unit is in a normal state, the steering power source of the vehicle steering unit may be adjusted according to whether the driving mode of the vehicle is a preset driving mode, for example, when the driving mode of the vehicle is the normal driving mode, 100% of the steering assist is still provided by the first type steering unit, and when the driving mode of the vehicle is the preset driving mode (the auxiliary driving mode and the automatic driving mode), the steering assist provided by the first type steering unit is reduced, and the second type steering unit is controlled to supplement the steering assist.
When the first-type steering portion is in the preset state, consideration is not made to the driving mode of the vehicle, but the steering power source is adjusted only according to the state of the first-type steering portion. For example, if the first type steering section is in an overload condition, the first type steering section may be controlled to reduce the steering assist provided and the second type steering section may be controlled to supplement the steering assist. For another example, when the first type steering part is in a fault state, the first type steering part can be controlled to stop providing steering assistance, and the second type steering part can be controlled to provide steering assistance for a period of time, so that a driver can park the vehicle at a safe position, and the safety level is improved.
In accordance with an exemplary embodiment of the present disclosure, as shown in fig. 5, the disclosed embodiment also provides a vehicle steering system 10, the vehicle steering system 10 being applicable to medium-to-large-sized business vehicles.
Referring to fig. 5, the vehicle steering system 10 includes a first type steering portion 11, a second type steering portion 12, and a control portion, the first type steering portion 11 including an electro-hydraulic power steering system (abbreviated as EHPS) that can be used as a preferred steering power source for the vehicle steering system 10, and the second type steering portion 12 including an electric power steering system (abbreviated as EPS) that can be used as a backup steering power source for the vehicle steering system 10.
The EHPS steering system can provide larger steering torque, but cannot provide an active steering function, and the EPS steering system is small in size, low in power consumption, light and flexible, and has the functions of active steering, lane keeping and the like.
The control part (not shown in the drawings) may be an Electronic Controller Unit (ECU), which has been explained in the foregoing embodiments, and will not be described here again. Here, the first type steering unit and the second type steering unit have respective control units, for example, the first type steering unit has a first control unit (EHPS ECU), the second type steering unit has a second control unit (EPS ECU), and an idle control signal (ISC) and a synchronization Pulse signal (Sync Pulse) are provided between the two control units, wherein the idle control signal is mainly used to transmit torque and a controller state between the first control unit and the second control unit; the synchronization pulse signal is used to ensure and maintain the synchronicity of the control of the first control section and the second control section. In the embodiment of the disclosure, by setting the idle speed control signal and the synchronous pulse signal, the synchronism and the reliability of the steering system of the vehicle are improved, and the driving experience of a driver is improved.
In the vehicle steering system provided by the embodiment of the disclosure, the first type steering part with the electro-hydraulic power-assisted steering system is used as a preferred steering power source, and the second type steering part with the electric power-assisted steering system is used as a standby steering power source, so that the vehicle steering system can provide larger steering torque, has an active steering function, and can be used as a standby to improve the safety and reliability of the vehicle steering system when the first type steering part fails.
In one embodiment, the first type steering 11 is provided in a hydraulic accumulator. The hydraulic accumulator is able to store the pressure oil in the hydraulic system and to re-discharge it when required, facilitating a reduction of the power demand of the first type of steering section 11.
According to yet another exemplary embodiment of the present disclosure, referring to fig. 5, the disclosed embodiment also provides a vehicle 100, the vehicle 100 including a steering wheel 20 and wheels 30, and a vehicle steering system 10, the steering wheel 20 being configured to provide steering direction to the wheels 30, the vehicle steering system 10 being configured to provide steering assistance to the wheels 30.
In some embodiments, referring to fig. 5, the vehicle further includes a steering column 40 and a steering wheel disposed at one end of the steering column 40, the other end of the steering column 40 being connected to the steering wheel 20, and when the driver turns the steering wheel, the rotation of the steering wheel is output to the steering wheel 20 through the steering column 40.
In some embodiments, referring to fig. 5, the vehicle further includes a torque sensor 60 and a vehicle speed sensor 70, and the control part can perform calculation processing on information detected by the torque sensor 60 and the vehicle speed sensor 70 to control the wheels 30 of the vehicle to change angle so as to implement a steering function of the vehicle.
In some embodiments, referring to fig. 5, the first type steering portion 11 and the second type steering portion 12 are provided on both sides of the steering gear 20, and the steering gear 20 is connected to the front wheels of the vehicle. By providing the vehicle steering system 10 on the front axle of the vehicle, it is advantageous to achieve greater steering assist and is more suitable for use in medium-to-large commercial vehicles.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A control method of a vehicle steering system, characterized by comprising:
acquiring state parameters of a first type steering part and/or a driving mode of a vehicle in the vehicle steering system, wherein the first type steering part comprises an electro-hydraulic power-assisted steering system;
determining whether the first type steering part is in a preset state according to the state parameter;
and if the first type steering part is in a preset state and/or the vehicle is in a preset driving mode, controlling the first type steering part to reduce the provided steering assistance and controlling the second type steering part of the vehicle steering system to provide steering assistance so as to assist steering, wherein the second type steering part comprises an electric power steering system.
2. The control method of a vehicle steering system according to claim 1, wherein the preset state of the first-type steering section includes an overload state, and controlling the second-type steering section to assist steering if the first-type steering section is in the overload state includes:
controlling the first type steering portion to reduce the steering assist force to greater than or equal to 50%, and controlling the second type steering portion to supplement the steering assist force reduced by the first type steering portion.
3. The control method of a vehicle steering system according to claim 2, characterized in that if the temperature of the first-type steering portion exceeds a preset threshold value, it is determined that the first-type steering portion is in the overload state;
wherein the preset threshold value is 75-85 ℃.
4. The control method of a vehicle steering system according to claim 1, wherein the preset state of the first-type steering section further includes a failure state, and if the first-type steering section is in the failure state, controlling the second-type steering section to assist steering includes:
the second type steering section is controlled to provide at least 50% steering assist.
5. The control method of a vehicle steering system according to claim 1, characterized by controlling the first-type steering portion to reduce steering assist power provided and controlling the second-type steering portion to assist steering if the vehicle is in the preset driving state, comprising:
the first type steering section is controlled to provide at least 50% steering assist and the second type steering section is controlled to supplement the remaining steering assist.
6. The control method of a vehicle steering system according to claim 1 or 5, characterized in that the preset driving state includes an automatic driving state and an assisted driving state.
7. A vehicle steering system for use with a vehicle, comprising:
a first type of steering section as a preferred steering power source for the vehicle steering system, the first type of steering section comprising an electro-hydraulic power steering system;
a second type steering section as a spare steering power source of the vehicle steering system, the second type steering section including an electric power steering system;
and a control part for controlling the second type steering part to provide auxiliary steering according to the state of the first type steering part and/or the driving state of the vehicle.
8. The vehicle steering system of claim 7, wherein a hydraulic accumulator is disposed in the first type of steering section.
9. A vehicle comprising a steering wheel and a wheel, and a vehicle steering system as claimed in claim 7 or 8, said vehicle steering system being connected to said steering wheel and said wheel, said steering wheel being adapted for output.
10. The vehicle of claim 9, further comprising a steering wheel coupled to the front wheels of the vehicle; and/or the number of the groups of groups,
the first type steering part and the second type steering part are arranged on two sides of the steering gear.
CN202410011783.7A 2024-01-03 2024-01-03 Control method of vehicle steering system, vehicle steering system and vehicle Pending CN117565961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410011783.7A CN117565961A (en) 2024-01-03 2024-01-03 Control method of vehicle steering system, vehicle steering system and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410011783.7A CN117565961A (en) 2024-01-03 2024-01-03 Control method of vehicle steering system, vehicle steering system and vehicle

Publications (1)

Publication Number Publication Date
CN117565961A true CN117565961A (en) 2024-02-20

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CN202410011783.7A Pending CN117565961A (en) 2024-01-03 2024-01-03 Control method of vehicle steering system, vehicle steering system and vehicle

Country Status (1)

Country Link
CN (1) CN117565961A (en)

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