CN109383613A - A kind of method and device for realizing vehicle electric power-assisted steering - Google Patents
A kind of method and device for realizing vehicle electric power-assisted steering Download PDFInfo
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- CN109383613A CN109383613A CN201710652067.7A CN201710652067A CN109383613A CN 109383613 A CN109383613 A CN 109383613A CN 201710652067 A CN201710652067 A CN 201710652067A CN 109383613 A CN109383613 A CN 109383613A
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- electric power
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- power steering
- steering mode
- mapping relations
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- 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
- B62D5/0409—Electric motor acting on the steering column
-
- 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
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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 application pre-establishes and the different corresponding mapping relations of electric power steering mode, then from different electric power steering modes, determine target electric power steering mode, obtain the current steering wheel torque and current vehicle speed of the vehicle afterwards again, and according to mapping relations corresponding with the target electric power steering mode, corresponding target power torque is obtained, the motor is finally controlled according to the target power torque and is rotated, to realize the control turned to the vehicle tyre.The application pre-establishes the corresponding relationship under different electric power steering modes between steering wheel torque, speed and power torque, so that under different electric power steering modes, corresponding steering wheel torque is different with identical power torque for identical speed, and the torque of steering wheel directly affects user and experiences to the feel of steering wheel, so as to select electric power steering mode according to the hobby of user, realize user to the individual demand of steering wheel feel.
Description
Technical field
This application involves automotive field more particularly to a kind of method and devices for realizing vehicle electric power-assisted steering.
Background technique
The servo steering system of vehicle is to mitigate driver actions at car steering wheel (alternatively referred to as steering wheel)
Operating force generates the system for turning to subsidy power using extrinsic power.Can substantially it divide with regard to the servo steering system on current automobile
For three classes: the first kind is mechanical type hydraulic power steering system, generally by hydraulic pump, oil pipe, pressure flow hybrid control valve body, V-type
The components such as driving belt, oil storage tank are constituted；Second class is electronic hydraulic power-assisted steering system, and main member includes oil storage tank, helps
Power turning control cell, electrodynamic pump, turning machine, power-assisted steering sensor etc.；Third class is electric boosting steering system
(Electronic Power Steering, abbreviation EPS), generally by torque sensor, electronic control unit, motor, turning machine
Structure etc. is constituted.Due to electric boosting steering system fit it is relatively stable when car speed is higher and energy saving, therefore application than
Other two kinds more extensive.
In vehicle electric servo steering system, the power torque of the steering mechanism according to speed and steering wheel torque into
Row determines.In the prior art, the mathematical relationship between the power torque of steering mechanism, speed and steering wheel torque is determining,
I.e. in the case where speed and certain power torque, steering wheel torque is also determining.And steering wheel torque influences user other side
It is experienced to the feel of disk, some users like the lighter experience of feel, and some users like the heavier experience of feel.Thus may be used
See, the prior art is unable to satisfy user to the individual demand of steering wheel feel.
Summary of the invention
In order to solve the technical problems existing in the prior art, this application provides a kind of realization vehicle electric power-assisted steerings
Method and device, meet user to the individual demand of steering wheel feel.
In a first aspect, this application provides a kind of method for realizing vehicle electric power-assisted steering, the method is pre-established
From the different corresponding mapping relations of electric power steering mode, the mapping relations are steering wheel torque, speed and help
Corresponding relationship between power torque, under different electric power steering modes, identical speed and identical power torque pair
The steering wheel torque answered is different；The steering wheel torque is the torque that direction disc spins generate, and the power torque is motor
Torque, the motor are used to control the steering of the tire of vehicle by steering mechanism；
The described method includes:
From the different electric power steering mode, target electric power steering mode is determined；
Obtain the current steering wheel torque and current vehicle speed of the vehicle, and according to the target electric power steering mould
The corresponding mapping relations of formula obtain target power torque corresponding with the current steering wheel torque and current vehicle speed；
The motor rotation is controlled according to the target power torque, to realize the control turned to the vehicle tyre.
Optionally, the electric power steering mode includes:
First electric power steering mode and the second electric power steering mode, the first electric power steering mode pair
The mapping relations answered are the first mapping relations, and the corresponding mapping relations of the second electric power steering mode are that the second mapping is closed
System；
Wherein, under the premise of speed and identical power torque, the corresponding steering wheel torque of first mapping relations is big
In the corresponding steering wheel torque of second mapping relations.
Optionally, the electric power steering mode further include:
Third electric power steering mode, the corresponding mapping relations of the third electric power steering mode are third mapping
Relationship, under the premise of speed and identical power torque, the corresponding steering wheel torque of second mapping relations is greater than described the
The corresponding steering wheel torque of three mapping relations.
Optionally, the different corresponding mapping relations of electric power steering mode specifically:
The corresponding mapping relations of flag bit of the different electric power steering mode；
It is described from the different electric power steering mode, determine that target electric power steering mode includes:
The selection instruction of electric power steering mode is obtained, carries electric boosted turn of the target in the selection instruction
To the flag bit of mode；
The mapping relations corresponding with the target electric power steering mode specifically:
The corresponding mapping relations of flag bit of the target electric power steering mode.
Optionally, described from the different electric power steering mode, determine target electric power steering mode packet
It includes:
The driver information of current driver's is obtained, and mesh corresponding with the driver information is obtained according to incidence relation
Mark electrokinetic process steering pattern, the incidence relation between driver information and the target electric power steering mode one
One corresponding relationship.
Optionally, the driver information includes:
The identity information and/or biological information of the driver.
Second aspect, this application provides a kind of device for realizing vehicle electric power-assisted steering, described device includes:
Mapping relations establish unit, close for pre-establishing mapping corresponding from different electric power steering modes
System, corresponding relationship of the mapping relations between steering wheel torque, speed and power torque, in different electric power steerings
Under mode, corresponding steering wheel torque is different with identical power torque for identical speed；The steering wheel torque is steering wheel
The torque generated is rotated, the power torque is the torque of motor, and the motor is used to control the wheel of vehicle by steering mechanism
The steering of tire；
Determination unit, for determining target electric power steering mode from the different electric power steering mode；
Information acquisition unit, for obtaining the current steering wheel torque and current vehicle speed of the vehicle, and according to it is described
The corresponding mapping relations of target electric power steering mode obtain mesh corresponding with the current steering wheel torque and current vehicle speed
Mark power torque；
Control unit is rotated for controlling the motor according to the target power torque, to realize to the vehicle wheel
The control that tire turns to.
Optionally, the different corresponding mapping relations of electric power steering mode specifically:
The corresponding mapping relations of flag bit of the different electric power steering mode；
The determination unit includes:
First information acquiring unit is taken in the selection instruction for obtaining the selection instruction of electric power steering mode
Flag bit with the target electric power steering mode；
The mapping relations corresponding with the target electric power steering mode specifically:
The corresponding mapping relations of flag bit of the target electric power steering mode.
Optionally, the determination unit includes:
Second information acquisition unit, for obtaining the driver information of current driver's, and according to incidence relation obtain with
The corresponding target electric power steering mode of the driver information, the incidence relation are the driver information and the mesh
Mark the one-to-one relationship between electric power steering mode.
Optionally, the driver information includes:
The identity information and/or biological information of the driver.
Pre-establish in this application from the different corresponding mapping relations of electric power steering mode, then never
In same electric power steering mode, target electric power steering mode is determined, then obtain the current steering wheel of the vehicle afterwards
Torque and current vehicle speed, and according to mapping relations corresponding with the target electric power steering mode, obtain with it is described current
Steering wheel torque and the corresponding target power torque of current vehicle speed finally control the motor according to the target power torque and turn
It is dynamic, to realize the control turned to the vehicle tyre.The application pre-establishes under different electric power steering modes
Corresponding relationship between steering wheel torque, speed and power torque, so that under different electric power steering modes, it is identical
Corresponding steering wheel torque is different with identical power torque for speed, and the torque of steering wheel directly affects user to steering wheel
Feel experience, so as to according to the hobby of user select electric power steering mode, realize user to steering wheel feel
Individual demand.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is that a kind of hardware scene structure for the method for realizing vehicle electric power-assisted steering provided by the embodiments of the present application shows
It is intended to；
Fig. 2 is the structural schematic diagram of electric boosting steering system provided by the embodiments of the present application；
Fig. 3 is a kind of flow diagram for method for realizing vehicle electric power-assisted steering that the embodiment of the present application one provides；
Fig. 4 is torque, steering wheel torque and speed under three kinds of electric power steering modes that the embodiment of the present application one provides
Relationship；
Fig. 5 is a kind of flow diagram for method for realizing vehicle electric power-assisted steering that the embodiment of the present application two provides；
Fig. 6 is a kind of structural block diagram for device for realizing vehicle electric power-assisted steering that the embodiment of the present application three provides.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.,
Below with reference to concrete application scene, application scheme is introduced, for example, the scene of the embodiment of the present application
One of, it can be applied among hardware scene as shown in Figure 1, the hardware includes: vehicle-mounted information and entertainment system 101 and electricity
Dynamic servo steering system 102.
The vehicle-mounted information and entertainment system 101 is to be based on controller local area network using vehicle-mounted dedicated central processing unit
The vehicle integrated information processing system that (Controller Area Network, abbreviation CAN) and Internet service are formed, can be with
Realize to include following functions: playing music, play video, broadcast, navigation, obtain real-time road condition information, obtain information of vehicles, vehicle
Body control, fault detection, mobile office, wireless telecommunications etc..
It may include electric power steering mode switch button on the display screen of the vehicle-mounted information and entertainment system 101,
Show the menu bar of electric power steering mode, user can select electric power steering mode from the menu bar, described
The display screen of vehicle-mounted information and entertainment system 101 can also show current electric power steering mode.
The electric boosting steering system 102 is a kind of directly by the power steering system of motor offer power torque.
Referring to fig. 2, the structural schematic diagram of electric boosting steering system 102 is shown.The electric boosting steering system 102 may include
Torque sensor, electronic control unit (Electronic Control Unit, abbreviation ECU), motor, steering mechanism etc..Its
In, steering mechanism may include worm gear mechanism, and one end of the electric boosting steering system 102 connects steering wheel, direction
Disk torque is transmitted to torque sensor by connecting the position of steering wheel, and the other end of the electric boosting steering system 102 connects
Turning machine is connect, turning machine is connect with automobile tire, and electric boosting steering system 102 is by driving turning machine rotation to realize to automobile
The change in tire direction.
The working principle of the electric boosting steering system: it helps according to the power-assisted steering mode of driver's selection and currently
Power steering pattern carries out pattern switching, under the power steering mode, after driver turn steering wheel, and torque sensor detection
To steering wheel torque, ECU controls the size of the power torque of motor according to the torque of torque sensor and speed, motor
Power torque is acted in turning machine by steering mechanism, realizes the control to the vehicle tyre.
The vehicle-mounted information and entertainment system 101 is counted with the electric boosting steering system 102 by automobile CAN-bus
According to transmission.
It should be noted that above-mentioned application scenarios are merely for convenience of understanding the principle of the application and showing, it is not used in
Limit technical solution provided by the embodiments of the present application.
Embodiment one:
Referring to Fig. 3, which is a kind of stream for method for realizing vehicle electric power-assisted steering that the embodiment of the present application one provides
Journey schematic diagram.
The method provided in this embodiment for realizing vehicle electric power-assisted steering, specifically comprises the following steps:
S301, from the different electric power steering mode, determine target electric power steering mode.
User can pass through touch in the electric power steering mode menu column on vehicle-mounted information and entertainment system display screen
Click selects electric power steering mode as target electric power steering mode.
Since there are electric boosting steering systems for vehicle, after previous driver uses vehicle, electric power steering system
System will record electric power steering mode used in a preceding driver, when the selected electric power steering of this driver
When mode and the preceding electric power steering mode difference of electric boosting steering system record, need to electric power steering mould
Formula switches over.After driver's selection target electric power steering mode, electric boosting steering system needs refer to according to selection
It enables and carrys out selection target electric power steering mode, power torque needed for determining, and in order to electric boosted turn of correct selection target
To mode, then needed in the selection instruction with corresponding and can be electric boosted with target electric power steering mode
The information of steering system identification, the information can be flag bit.Pre-establish the mark of different electric power steering modes
The corresponding mapping relations in position, electric power steering mode and flag bit are one-to-one relationships, can be with according to flag bit
For distinguishing current electric power steering mode and target electric power steering mode, to realize electric power steering mode
Switching.S302, the current steering wheel torque and current vehicle speed for obtaining the vehicle, and according to electric boosted turn of the target
To the corresponding mapping relations of mode, target power torque corresponding with the current steering wheel torque and current vehicle speed is obtained.
The present embodiment can pre-establish from the different corresponding mapping relations of electric power steering mode, it is described to reflect
The relationship of penetrating can corresponding relationship between steering wheel torque, speed and power torque, in different electric power steering modes
Under, corresponding steering wheel torque is different with identical power torque for identical speed, and the steering wheel torque is direction disc spins
The torque of generation, the power torque are the torque of motor, and the motor is used to control the tire of vehicle by steering mechanism
It turns to；The torque of the steering wheel directly affects user and experiences to the feel of steering wheel.
In order to meet the different feel experience of different users, meet user to the individual demand of steering wheel feel, originally
Apply including at least two kinds of electric power steering modes in method described in embodiment, to realize different electric power steering moulds
Switching between formula.
The electric power steering mode may include the first electric power steering mode and the second electric power steering mould
Formula, the corresponding mapping relations of the first electric power steering mode are the first mapping relations, second electric power steering
The corresponding mapping relations of mode are the second mapping relations；Wherein, under the premise of speed and identical power torque, described first reflects
The corresponding steering wheel torque of relationship is penetrated greater than the corresponding steering wheel torque of second mapping relations.The bigger meaning of steering wheel torque
Steering wheel rotation when, rotary force used is bigger on hand, and feel is heavier；Steering wheel torque is smaller to mean steering wheel rotation
When, rotary force used is smaller on hand, and feel is lighter.For example, for the male driver big for hand-power, in steering procedure
In, when may more like steering wheel rotation, feel is heavier, can be arranged first electric boosted turn for this kind of crowds
To mode, the first electric power steering mode can be sedate mode, and under sedate mode, there may be a kind of steering wheels to turn round
Corresponding relationship between square, speed and power torque, can be as the first mapping relations；And most of drivers are come
It says, then tends to the moderate feeling of exerting oneself on hand, the second electric power steering mode can be set for this kind of crowds, second
Electric power steering mode can be comfort mode, under comfort mode, may exist a kind of steering wheel torque, speed and power-assisted
Corresponding relationship between torque, can be as the second mapping relations；Since sedate mode is than comfort mode driver turn
It is firmly bigger on hand when steering wheel, thus in the mapping relations established, even if speed is identical with power torque under two modes, two
The corresponding steering wheel torque of kind mapping relations is also different, i.e., sedate mode is bigger than comfort mode steering wheel torque.
On the basis of the above, the electric power steering mode can also include: third electric power steering mode, described
The corresponding mapping relations of third electric power steering mode are third mapping relations, in speed and the identical premise of power torque
Under, the corresponding steering wheel torque of second mapping relations is greater than the corresponding steering wheel torque of the third mapping relations.For example,
The women lighter for hand-power, may more like with the power of very little can steering wheel rotation turning, for this kind of crowd,
Third electric power steering mode can be set, the third electric power steering mode can be slim and graceful mode, comfort mode
It is bigger than exerting oneself on hand when driver turn steering wheel under slim and graceful mode, so in the mapping relations established, even if two modes
Lower speed is identical with power torque, and the corresponding steering wheel torque of two kinds of mapping relations is also different, i.e., comfort mode is than slim and graceful
Mode steering wheel torque is big.By taking three kinds of sedate mode, comfort mode, slim and graceful mode electric power steering modes as an example, referring to figure
4, show the relationship of torque under three kinds of electric power steering modes, steering wheel torque and speed.The embodiment of the present application with
For three kinds of electric power steering modes, but the electric power steering mode is not limited to above-mentioned three kinds, art technology
Personnel can be with designed, designed.
When the information described in the S301 is flag bit, in this step, the mapping relations can help for the target is electronic
The corresponding mapping relations of the flag bit of power steering pattern.It is reflected according to the flag bit of the target electric power steering mode is corresponding
Relationship is penetrated, target power torque corresponding with the current steering wheel torque and current vehicle speed is obtained.
For example, electric power steering mode may include sedate mode, comfort mode and slim and graceful mode, sedate mode is corresponding
Flag bit be 3, the corresponding flag bit of comfort mode is 2, and the corresponding flag bit of slim and graceful mode is 1.If preceding primary driving
When, selection is comfort mode, then the corresponding flag bit 2 of comfort mode is stored in electric boosting steering system, feeds back to vehicle
It carries in information entertainment, comfort mode is shown in vehicle-mounted information and entertainment system.And if this driving, driver select
Slim and graceful mode, then the corresponding flag bit of slim and graceful mode can be sent to EPS from vehicle-mounted information and entertainment system by CAN bus for 1,
For EPS according to the steering wheel torque corresponding with flag bit 1 pre-established, the relationship of current vehicle speed and power torque, selection is corresponding
Electric power steering mode, determine the corresponding power torque of flag bit 1.
S303, the motor rotation is controlled according to the target power torque, the vehicle tyre is turned to realization
Control.
Through the above steps, it is determined that required power torque, after driver turn steering wheel, ECU is helped according to determining
Power torque controls the direction of rotation of motor and the size of power torque, and the power torque of motor is acted on by steering mechanism turns
To on machine, the control to the vehicle tyre is realized.
The application is turned by pre-establishing steering wheel torque, speed and power-assisted under different electric power steering modes
Corresponding relationship between square, so that under different electric power steering modes, identical speed and identical power torque pair
The steering wheel torque answered is different, and the torque of steering wheel directly affects user and experiences to the feel of steering wheel, to realize use
Individual demand of the family to steering wheel feel.
Embodiment two
For same vehicle, different drivers might have, and different drivers is for electric power steering mode
Hobby may be different, for example, previous driver is male, like the sedate experience of feel, and present driver is female
Property, like the slim and graceful experience of feel, this is just needed sedate pattern switching to slim and graceful mode, and the handover operation of driver can wrap
It includes and clicks electric power steering mode switch button, selected in the menu bar of the electric power steering mode of display electric boosted
Steering pattern.But this just needs driver of every replacement, and driver requires to repeat when switching electric power steering mode
Above-mentioned input step, it is cumbersome.For this purpose, the embodiment of the present application provides a kind of method for realizing vehicle electric power-assisted steering.
Referring to Fig. 5, the process signal of the method provided by the embodiments of the present application for realizing vehicle electric power-assisted steering is shown
Figure.
It is provided by the embodiments of the present application realize vehicle electric power-assisted steering method specifically includes the following steps:
S501, the driver information for obtaining current driver's, and obtained and the driver information pair according to incidence relation
The target electric power steering mode answered, the incidence relation be driver information and the target electric power steering mode it
Between one-to-one relationship.
The driver information may include: identity information and biological information of the driver etc..It is wherein described
The identity information of driver may include phone number, name and identification card number etc..
When the identity information of driver is phone number, obtained according to incidence relation corresponding with the driver information
The process of target electric power steering mode can be, after driver gets on the bus, the mobile phone of driver can automatically with interior nothing
Gauze network is attached, thus the relevant information of the mobile phone for obtaining driver, for example, phone number, the cell-phone number of the driver
Code has pre-established incidence relation with corresponding electric power steering mode, searches its pass according to the phone number of driver
Connection relationship, thus the corresponding electric power steering mode of the phone number for obtaining the driver.
When the identity information of driver is name, target corresponding with the driver information is obtained according to incidence relation
The process of electric power steering mode can be, and after driver gets on the bus, driver can be somebody's turn to do by interior voice system, input
The name of driver, the name of the driver have pre-established incidence relation, root with corresponding electric power steering mode
According to its incidence relation of the name look-up of driver, thus the corresponding electric power steering mode of the name for obtaining the driver.
When the identity information of driver is identification card number, obtained according to incidence relation corresponding with the driver information
The process of target electric power steering mode can be, and after driver gets on the bus, driver can be defeated by interior voice system
Enter the identification card number of the driver, the identification card number of the driver has been pre-established with corresponding electric power steering mode
Incidence relation searches its incidence relation according to the identification card number of driver, so that the identification card number for obtaining the driver is corresponding
Electric power steering mode.
The biological information of the driver may include fingerprint, vocal print and iris etc..
When the identity information of driver is fingerprint, target corresponding with the driver information is obtained according to incidence relation
The process of electric power steering mode can be, and after driver gets on the bus, driver can place a digit into interior fingerprint recognition dress
At the fingerprint collecting set, the car fingerprint identification device finds the finger of the existing driver to match with collected fingerprint
Line, the fingerprint of the driver have pre-established incidence relation with corresponding electric power steering mode, have been driven according to matched
The fingerprint for the person of sailing searches its incidence relation, thus the corresponding electric power steering mode of the fingerprint for obtaining the driver.
When the identity information of driver is vocal print, target corresponding with the driver information is obtained according to incidence relation
The process of electric power steering mode can be, after driver gets on the bus, vocal print quilt that driver is made a sound when can speak
Interior speech recognition system acquisition, the car speech recognition system is found existing drives with what collected vocal print matched
The vocal print for the person of sailing, the vocal print of the driver have pre-established incidence relation with corresponding electric power steering mode, according to
The vocal print of matched driver searches its incidence relation, thus the corresponding electric power steering mould of the vocal print for obtaining the driver
Formula.
When the identity information of driver is iris, target corresponding with the driver information is obtained according to incidence relation
The process of electric power steering mode can be, and after driver gets on the bus, driver can be filled eye alignment car iris recognition
At the iris capturing set, the car iris identification device finds the rainbow of the existing driver to match with collected iris
Film, the iris of the driver have pre-established incidence relation with corresponding electric power steering mode, have been driven according to matched
The iris for the person of sailing searches its incidence relation, thus the electric power steering mode that the iris for obtaining the driver is answered.
S502, the current steering wheel torque and current vehicle speed for obtaining the vehicle, and according to electric boosted with the target
The corresponding mapping relations of steering pattern obtain target power torque corresponding with the current steering wheel torque and current vehicle speed.
S503, the motor rotation is controlled according to the target power torque, the vehicle tyre is turned to realization
Control.
S502 and S503 is identical as step corresponding in Fig. 3 respectively, and details are not described herein.
The embodiment of the present application utilizes the target driver information of driver, and obtains driving with the target according to incidence relation
The person's of sailing information corresponding target electric power steering mode is avoided and is driven in replacement when realizing switching electric power steering mode
When the person of sailing, the electric power steering mode liked by repeatedly inputting selection driver, cumbersome problem, conveniently, fastly
The switching of electric power steering mode is realized promptly.
Embodiment three
Referring to Fig. 6, which is a kind of knot for device for realizing vehicle electric power-assisted steering that the embodiment of the present application three provides
Structure block diagram.
Realization vehicle electric servo steering device provided in this embodiment includes: that mapping relations establish unit 601, determine list
Member 602, information acquisition unit 603 and control unit 604.
The mapping relations establish unit 601, respectively correspond for pre-establishing from different electric power steering modes
Mapping relations, corresponding relationship of the mapping relations between steering wheel torque, speed and power torque, different electronic
Under power-assisted steering mode, corresponding steering wheel torque is different with identical power torque for identical speed；The steering wheel torque
For the torque that direction disc spins generate, the power torque is the torque of motor, and the motor is used to control by steering mechanism
The steering of the tire of vehicle；
The determination unit 602, for determining electric boosted turn of target from the different electric power steering mode
To mode；
The information acquisition unit 603, for obtaining the current steering wheel torque and current vehicle speed of the vehicle, and according to
Mapping relations corresponding with the target electric power steering mode obtain and the current steering wheel torque and current vehicle speed pair
The target power torque answered；
Described control unit 604 is rotated for controlling the motor according to the target power torque, to realize to described
The control that vehicle tyre turns to.
The device that vehicle electric power-assisted steering is realized provided by the embodiment of the present application, it is electronic by the difference pre-established
Corresponding relationship under power-assisted steering mode between steering wheel torque, speed and power torque, so that at different electric boosted turn
To under mode, corresponding steering wheel torque is different with identical power torque for identical speed, and the direct shadow of the torque of steering wheel
User has been rung to experience the feel of steering wheel, it is real so as to select different electric power steering modes according to user preferences
Individual demand of the current family to steering wheel feel.
Optionally, the different corresponding mapping relations of electric power steering mode specifically:
The corresponding mapping relations of flag bit of the different electric power steering mode；
The determination unit 602 can also include: first information acquiring unit 6021；The first information acquiring unit
6021, for obtaining the selection instruction of electric power steering mode, it is electric boosted that the target is carried in the selection instruction
The flag bit of steering pattern.
The mapping relations corresponding with the target electric power steering mode specifically:
The corresponding mapping relations of flag bit of the target electric power steering mode.
Optionally, the determination unit 602 can also include: the second information acquisition unit 6022.
Second information acquisition unit 6022, for obtaining the target driver information of current driver's, and according to pass
Connection relationship obtains target electrokinetic process steering pattern corresponding with the target driver information, and the incidence relation is driver
One-to-one relationship between information and the target electric power steering mode.
When introducing the element of various embodiments of the application, the article " one ", "one", " this " and " described " be intended to
Indicate one or more elements.Word "include", "comprise" and " having " are all inclusive and mean in addition to listing
Except element, there can also be other elements.
It should be noted that those of ordinary skill in the art will appreciate that realizing the whole in above method embodiment or portion
Split flow is relevant hardware can be instructed to complete by computer program, and the program can be stored in a computer
In read/write memory medium, the program is when being executed, it may include such as the process of above-mentioned each method embodiment.Wherein, the storage
Medium can be magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random
Access Memory, RAM) etc..
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to embodiment of the method
Part explanation.The apparatus embodiments described above are merely exemplary, wherein described be used as separate part description
Unit and module may or may not be physically separated.Furthermore it is also possible to select it according to the actual needs
In some or all of unit and module achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying
In the case where creative work, it can understand and implement.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (10)
1. a kind of method for realizing vehicle electric power-assisted steering, which is characterized in that
Pre-establish from the different corresponding mapping relations of electric power steering mode, the mapping relations be steering wheel turn round
Corresponding relationship between square, speed and power torque, under different electric power steering modes, identical speed and identical
The corresponding steering wheel torque of power torque is different；The steering wheel torque is the torque that direction disc spins generate, and the power-assisted turns
Square is the torque of motor, and the motor is used to control the steering of the tire of vehicle by steering mechanism；
The described method includes:
From the different electric power steering mode, target electric power steering mode is determined；
Obtain the current steering wheel torque and current vehicle speed of the vehicle, and according to the target electric power steering mode pair
The mapping relations answered obtain target power torque corresponding with the current steering wheel torque and current vehicle speed；
The motor rotation is controlled according to the target power torque, to realize the control turned to the vehicle tyre.
2. the method according to claim 1, wherein the electric power steering mode includes:
First electric power steering mode and the second electric power steering mode, the first electric power steering mode are corresponding
Mapping relations are the first mapping relations, and the corresponding mapping relations of the second electric power steering mode are the second mapping relations；
Wherein, under the premise of speed and identical power torque, the corresponding steering wheel torque of first mapping relations is greater than institute
State the corresponding steering wheel torque of the second mapping relations.
3. according to the method described in claim 2, it is characterized in that, the electric power steering mode further include:
Third electric power steering mode, the corresponding mapping relations of the third electric power steering mode are that third mapping is closed
System, under the premise of speed and identical power torque, the corresponding steering wheel torque of second mapping relations is greater than the third
The corresponding steering wheel torque of mapping relations.
4. the method according to claim 1, wherein the different corresponding mappings of electric power steering mode
Relationship specifically:
The corresponding mapping relations of flag bit of the different electric power steering mode；
It is described from the different electric power steering mode, determine that target electric power steering mode includes:
The selection instruction of electric power steering mode is obtained, carries the target electric power steering mould in the selection instruction
The flag bit of formula；
The mapping relations corresponding with the target electric power steering mode specifically:
The corresponding mapping relations of flag bit of the target electric power steering mode.
5. the method according to claim 1, which is characterized in that described from described different electric boosted
In steering pattern, determine that target electric power steering mode includes:
The driver information of current driver's is obtained, and target electricity corresponding with the driver information is obtained according to incidence relation
Dynamic power-assisted steering mode, the incidence relation between the driver information and the target electric power steering mode one
One corresponding relationship.
6. according to the method described in claim 5, it is characterized in that, the driver information includes:
The identity information and/or biological information of the driver.
7. a kind of device for realizing vehicle electric power-assisted steering, which is characterized in that described device includes:
Mapping relations establish unit, for pre-establish from the different corresponding mapping relations of electric power steering mode,
Corresponding relationship of the mapping relations between steering wheel torque, speed and power torque, in different electric power steering moulds
Under formula, corresponding steering wheel torque is different with identical power torque for identical speed；The steering wheel torque spirals for direction
It changes the line of production raw torque, the power torque is the torque of motor, and the motor is used for the tire by steering mechanism's control vehicle
Steering；
Determination unit, for determining target electric power steering mode from the different electric power steering mode；
Information acquisition unit, for obtaining the current steering wheel torque and current vehicle speed of the vehicle, and according to the target
The corresponding mapping relations of electric power steering mode obtain target corresponding with the current steering wheel torque and current vehicle speed and help
Power torque；
Control unit rotates for controlling the motor according to the target power torque, is turned with realizing to the vehicle tyre
To control.
8. device according to claim 7, which is characterized in that the different corresponding mappings of electric power steering mode
Relationship specifically:
The corresponding mapping relations of flag bit of the different electric power steering mode；
The determination unit includes:
First information acquiring unit carries in the selection instruction for obtaining the selection instruction of electric power steering mode
The flag bit of the target electric power steering mode；
The mapping relations corresponding with the target electric power steering mode specifically:
The corresponding mapping relations of flag bit of the target electric power steering mode.
9. according to device described in claim 7-8 any one, which is characterized in that the determination unit includes:
Second information acquisition unit, for obtaining the driver information of current driver's, and according to incidence relation obtain with it is described
The corresponding target electric power steering mode of driver information, the incidence relation are the driver information and target electricity
One-to-one relationship between dynamic power-assisted steering mode.
10. device according to claim 9, which is characterized in that the driver information includes:
The identity information and/or biological information of the driver.
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| CN114919650A (en) * | 2022-06-16 | 2022-08-19 | 上汽通用五菱汽车股份有限公司 | Steering power-assisted control method, device, equipment and computer readable storage medium |
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