CN106891988A - Electric boosting steering system and its control method with various assistant modes - Google Patents
Electric boosting steering system and its control method with various assistant modes Download PDFInfo
- Publication number
- CN106891988A CN106891988A CN201510960251.9A CN201510960251A CN106891988A CN 106891988 A CN106891988 A CN 106891988A CN 201510960251 A CN201510960251 A CN 201510960251A CN 106891988 A CN106891988 A CN 106891988A
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- China
- Prior art keywords
- road conditions
- steering system
- power
- electric boosting
- boosting steering
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Classifications
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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
- B62D5/0457—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)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a kind of electric boosting steering system with various assistant modes, the nominal data of various road conditions is obtained by demarcating, various road conditions nominal data is cured to the nominal data area of the NVM of ECU, NVM code area is stored with electric boosting steering system control program, according to the road conditions instruction corresponding assistant mode of selection for receiving, electric boosting steering system control program calls the nominal data control electric boosting steering system power-assisted output of road conditions under the pattern to ECU；The nominal data of road conditions refers to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions.The invention also discloses a kind of electric power steering system control method with various assistant modes.The present invention can adjust electric boosting steering system and export different power-assisteds according to road conditions, can improve the manipulation feel of automobile, improve driving comfort sense.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of electric boosting steering system with various assistant modes.This
Invention further relates to a kind of electric power steering system control method with various assistant modes.
Background technology
Electric boosting steering system (EPS) judges that the steering of driver is intended to, by electricity by detecting steering wheel torque
The machine output torque power steering extra for driver provides, improves the comfortableness in steering procedure and flexibility.
Single assistant mode be ECU (ECU) according to input signals such as steering wheel torque, steering wheel angle, speeds,
According to the power-assisted curve demarcated under normal road condition, corresponding motor torque is exported.But this pattern does not adapt to various
Different condition of road surface.For example when automobile is travelled on ice ground or muddy road surface, using the assistant mode under normal road condition just
Driver is set to feel to turn to light or heavy, control effect of the influence to vehicle.
In order that automobile can adapt to the steering requirement of different road conditions, improved way is on various typical roads to EPS
Demarcated under condition, the power-assisted curve of various road conditions can be taken into account so as to design.But this way is only to various road conditions
Compromise treatment, so as to reduce the power-assisted ability under normal road condition.If the automobile most of the time is under normal road condition
During traveling, the manipulation feel of driver will be influenceed.
The content of the invention
The technical problem to be solved in the present invention be to provide it is a kind of can according to road conditions export different power-assisteds with various power-assisted moulds
The electric power steering system of formula, the present invention can improve the manipulation feel of automobile, improve driving comfort sense.The present invention is also provided
And a kind of electric power steering system control method with various assistant modes.
In order to solve the above technical problems, the electric boosting steering system with various assistant modes that the present invention is provided, including：
The nominal data of various road conditions is obtained by demarcating, various road conditions nominal data is cured to the demarcation of the NVM of ECU
Data field, NVM code area is stored with electric boosting steering system control program, and ECU instructs selection according to the road conditions for receiving
Corresponding assistant mode, electric boosting steering system control program calls that the nominal data control of road conditions under the pattern is electronic to be helped
Power steering power-assisted is exported；
The nominal data of road conditions refers to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions.
Wherein, electric boosting steering system control program includes Power assisted control module and motor control module, and ECU is according to connecing
The road conditions instruction selection assistant mode of receipts, the power-assisted model in Power assisted control module calls the road conditions nominal data under the pattern
Output torque is instructed, and then controls power-assisted to export by motor control module again.
Wherein, the nominal data of various road conditions by Coutinuous store in the different pieces of information space of NVM, the demarcation of various road conditions
The size of data is identical with inner parameter structure, by its initial address of road conditions numeral index.
Wherein, electric boosting steering system operating mode is divided into：Initial phase, Power assisted control repeating query stage and lower electric stage；
Initial phase (vehicle ignition stage), ECU reads from electricity erasable memorizer and dispatches from the factory or user is in a upper driving
The assistant mode being circularly set, and the initial road conditions nominal data of this driving cycle is selected according to the assistant mode；
Power assisted control repeating query stage, ECU detects the instruction of outside input road conditions according to predetermined period repeating query, is instructed according to road conditions
Modification assistant mode and its road conditions nominal data, the size of adjustment electric boosting steering system power-assisted output；Power assisted control wheel
I.e. (steering wheel power-assisted exports the stage to follow the stage.
The lower electric stage, ECU detect vehicle ignition signal it is invalid when, current assistant mode be saved in electric erasable storage
In device, the safe power down of ECU is then carried out.
Wherein, electric boosting steering system is in an initial phase for driving cycle from electricity erasable memorizer (EEPROM)
The assistant mode of a driving cycle is used as the initial assistant mode of this driving cycle in middle reading.One driving cycle refers to car
Once igniting is to flame-out process.
The control method of the electric boosting steering system with various assistant modes that the present invention is provided, including：
The nominal data of various road conditions is defined, electric boosted turn is adjusted according to the road conditions instruction selection road conditions nominal data for receiving
Exported to the power-assisted of system；At the end of one driving cycle, the assistant mode of the driving cycle is stored；
The nominal data of road conditions refers to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions.
Wherein, in a driving cycle, receive road conditions instruction and detect outside input road conditions using according to predetermined period repeating query
The mode of instruction.
Wherein, when a driving cycle starts, the assistant mode of upper driving cycle storage is read as this driving cycle
Initial assistant mode.
Figure of description
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is electric boosting steering system one embodiment control block diagram of the present invention with various assistant modes.
Fig. 2 is that electric boosting steering system non-volatile memory space distribution of the present invention with various assistant modes is illustrated
Figure.
Fig. 3 is that electric boosting steering system nominal data switching one possible embodiments of the present invention with various assistant modes are shown
It is intended to.
Fig. 4 is that electric power steering system control method one embodiment flow of the present invention with various assistant modes is illustrated
Figure.
Specific embodiment
As shown in figure 1, the electric boosting steering system with various assistant modes that the present invention is provided, including：
The nominal data of various road conditions is obtained by demarcating, the NVM that various road conditions nominal data is cured into ECU is (non-easy
The property lost memory) nominal data area, NVM code area is stored with electric boosting steering system control program, ECU according to
The road conditions instruction selection assistant mode of reception, electric boosting steering system control program calls the demarcation number of road conditions under the pattern
Exported according to control electric boosting steering system power-assisted；Electric boosting steering system control program includes Power assisted control module and electricity
Machine control module, ECU is called according to the road conditions instruction selection assistant mode for receiving, the power-assisted model in Power assisted control module
Road conditions nominal data output torque instruction under the pattern, then controls power-assisted to export by motor control module again.Road conditions
Nominal data refer to the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions combination.
As shown in Figure 2, there is provided nominal data of the present invention switches an embodiment, storage random access storage device (RAM) acceptance of the bid
Determining the value of variable needs to change with the nominal data of each road conditions.For ease of overall assignment, variable will be demarcated and be intensively allocated to company
In continuous address, it is ensured that the address structure inside nominal data in NVM is complete with the address structure of demarcation variable range in RAM
It is identical, it is ensured that corresponding address is the value of corresponding demarcation variable in nominal data.
As shown in figure 3, the nominal data of various road conditions by Coutinuous store in the different pieces of information space of NVM, various road conditions
Nominal data size it is identical with inner parameter structure, by its initial address of road conditions numeral index.
Electric boosting steering system operating mode is divided into：Initial phase, Power assisted control repeating query stage and lower electric stage；
Initial phase (vehicle ignition stage), ECU reads from electricity erasable memorizer and dispatches from the factory or user is in a upper driving
The assistant mode being circularly set, and the initial road conditions nominal data of this driving cycle is selected according to the assistant mode；
Power assisted control repeating query stage, ECU detects the instruction of outside input road conditions according to predetermined period repeating query, is instructed according to road conditions
Modification assistant mode and its road conditions nominal data, the size of adjustment electric boosting steering system power-assisted output；Power assisted control wheel
Follow the stage i.e. steering wheel power-assisted output stage.
The lower electric stage, ECU detect vehicle ignition signal it is invalid when, current assistant mode is saved in electric erasable and is deposited
In reservoir, the safe power down of ECU is then carried out.
Electric boosting steering system is read in an initial phase for driving cycle from electricity erasable memorizer (EEPROM)
The assistant mode of a driving cycle is taken as the initial assistant mode of this driving cycle.One driving cycle refers to vehicle one
Flame-out process is arrived in secondary igniting.
The control method of the electric boosting steering system with various assistant modes that the present invention is provided, including：Define various
The nominal data of road conditions, electric boosted turn is adjusted according to the road conditions instruction selection assistant mode and its road conditions nominal data that receive
Exported to the power-assisted of system；At the end of one driving cycle, the assistant mode of the driving cycle is stored；The demarcation of road conditions
Data refer to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions, in a driving cycle, are received
Road conditions instruction according to predetermined period repeating query by the way of the instruction of outside input road conditions is detected.When one driving cycle starts,
The assistant mode of upper driving cycle storage is read as the initial assistant mode of this driving cycle.
As shown in figure 4, the specific embodiment of control method one of the above-mentioned electric boosting steering system with various assistant modes；
The upper electricity of ECU, initial assistant mode (a upper driving cycle or the assistant mode stored when dispatching from the factory) is read from EEPROM；
Now, current assistant mode is preserved if electricity under vehicle, otherwise ECU detects outside input according to predetermined period repeating query
Feel switching command (road conditions instruction), according to the initial assistant mode for reading if without feel switching command, by mark
Determine the nominal data that variate-value calls road conditions, motor control output power-assisted is carried out according to torque command；
The nominal data of road conditions pointed by feel switching command is checked if feel switching command is received and is currently running
Road conditions nominal data it is whether consistent, current torque command continued executing with if not changing carry out motor control output and help
Power；If the nominal data of road conditions is inconsistent with the nominal data of the road conditions being currently running pointed by feel switching command,
Then according to the feel switching command retrieval road conditions nominal data for receiving, the content of the nominal data of road conditions is copied into RAM
Demarcation variable range, carry out motor control output power-assisted according to the instruction of variate-value output torque is demarcated.
The present invention has been described in detail above by specific embodiment and embodiment, but these are not constituted to this
The limitation of invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Enter, these also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of electric boosting steering system with various assistant modes, it is characterized in that：
The nominal data of various road conditions is obtained by demarcating, various road conditions nominal data is cured to the demarcation of the NVM of ECU
Data field, NVM code area is stored with electric boosting steering system control program, and ECU instructs selection according to the road conditions for receiving
Electric boosting steering system assistant mode, electric boosting steering system control program calls the nominal data of road conditions under the pattern
The power-assisted output of control electric boosting steering system；
Wherein, the nominal data of road conditions refers to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions.
2. there is the electric boosting steering system of various assistant modes as claimed in claim 1, it is characterized in that：It is electronic to help
Power steering control program includes Power assisted control module and motor control module, and ECU instructs selection according to the road conditions for receiving
Assistant mode, the power-assisted model in Power assisted control module calls the road conditions nominal data output torque under the pattern to instruct, so
Power-assisted is controlled to export by motor control module again afterwards.
3. there is the electric boosting steering system of various assistant modes as claimed in claim 2, it is characterized in that：
The nominal data of various road conditions by Coutinuous store in the different pieces of information space of NVM, the nominal data of various road conditions
Size is identical with inner parameter structure, by its initial address of road conditions numeral index.
4. there is the electric boosting steering system of various assistant modes as claimed in claim 1, it is characterized in that：It is electronic to help
Power steering operating mode is divided into：Initial phase, Power assisted control repeating query stage and lower electric stage；
Initial phase, ECU reads from electricity erasable memorizer and dispatches from the factory or power-assisted that user is set in a upper driving cycle
Pattern, and the initial road conditions nominal data of this driving cycle is selected according to the assistant mode；
Power assisted control repeating query stage, ECU detects the instruction of outside input road conditions according to predetermined period repeating query, is instructed according to road conditions
Modification assistant mode and its road conditions nominal data, the size of adjustment electric boosting steering system power-assisted output；
The lower electric stage, ECU detect vehicle ignition signal it is invalid when, current assistant mode is saved in electric erasable and is deposited
In reservoir, the safe power down of ECU is then carried out.
5. there is the electric boosting steering system of various assistant modes as claimed in claim 4, it is characterized in that：It is electronic to help
Power steering driving cycle on an initial phase for driving cycle reads from electricity erasable memorizer is helped
Force mode is used as the initial assistant mode of this driving cycle.
6. a kind of control method of the electric boosting steering system with various assistant modes, it is characterized in that, including：
The nominal data of various road conditions is defined, according to the road conditions instruction selection assistant mode and its road conditions nominal data that receive,
Adjust the power-assisted output of electric boosting steering system；At the end of one driving cycle, the assistant mode of the driving cycle is deposited
Storage；
The nominal data of road conditions refers to the combination of the corresponding electric boosting steering system power-assisted parameter of this kind of road conditions.
7. there is the electric power steering system control method of various assistant modes as claimed in claim 6, it is characterized in that：
In a driving cycle, receive road conditions instruction and detect the side that outside input road conditions are instructed using according to predetermined period repeating query
Formula.
8. there is the electric power steering system control method of various assistant modes as claimed in claim 6, it is characterized in that：
When one driving cycle starts, the assistant mode of upper driving cycle storage is read as the initial power-assisted mould of this driving cycle
Formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960251.9A CN106891988A (en) | 2015-12-18 | 2015-12-18 | Electric boosting steering system and its control method with various assistant modes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960251.9A CN106891988A (en) | 2015-12-18 | 2015-12-18 | Electric boosting steering system and its control method with various assistant modes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106891988A true CN106891988A (en) | 2017-06-27 |
Family
ID=59190427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510960251.9A Pending CN106891988A (en) | 2015-12-18 | 2015-12-18 | Electric boosting steering system and its control method with various assistant modes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106891988A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808766A (en) * | 2017-11-20 | 2019-05-28 | 操纵技术Ip控股公司 | The active front steering system of view-based access control model |
| CN111361633A (en) * | 2019-11-21 | 2020-07-03 | 大连创新零部件制造公司 | Electric power steering system with multiple driving mode selections for commercial vehicle |
| CN112429075A (en) * | 2019-08-26 | 2021-03-02 | 上海汽车集团股份有限公司 | Control method and device for electric power steering system |
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| JP2002160657A (en) * | 2000-11-27 | 2002-06-04 | Koyo Seiko Co Ltd | Power steering device |
| CN201566681U (en) * | 2009-12-08 | 2010-09-01 | 株洲易力达机电有限公司 | Electric power-assisted steering device with various driving modes |
| JP2011136588A (en) * | 2009-12-25 | 2011-07-14 | Denso Corp | Electric power steering |
| CN102267458A (en) * | 2010-05-13 | 2011-12-07 | 科达汽车公司 | Selectable driving modes |
| CN203306087U (en) * | 2013-05-31 | 2013-11-27 | 重庆交通大学 | Automobile multi-operating condition electric power steering system |
-
2015
- 2015-12-18 CN CN201510960251.9A patent/CN106891988A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002160657A (en) * | 2000-11-27 | 2002-06-04 | Koyo Seiko Co Ltd | Power steering device |
| CN201566681U (en) * | 2009-12-08 | 2010-09-01 | 株洲易力达机电有限公司 | Electric power-assisted steering device with various driving modes |
| JP2011136588A (en) * | 2009-12-25 | 2011-07-14 | Denso Corp | Electric power steering |
| CN102267458A (en) * | 2010-05-13 | 2011-12-07 | 科达汽车公司 | Selectable driving modes |
| CN203306087U (en) * | 2013-05-31 | 2013-11-27 | 重庆交通大学 | Automobile multi-operating condition electric power steering system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808766A (en) * | 2017-11-20 | 2019-05-28 | 操纵技术Ip控股公司 | The active front steering system of view-based access control model |
| CN109808766B (en) * | 2017-11-20 | 2023-01-10 | 操纵技术Ip控股公司 | Vision-based active steering system |
| CN112429075A (en) * | 2019-08-26 | 2021-03-02 | 上海汽车集团股份有限公司 | Control method and device for electric power steering system |
| CN112429075B (en) * | 2019-08-26 | 2022-01-25 | 上海汽车集团股份有限公司 | Control method and device for electric power steering system |
| CN111361633A (en) * | 2019-11-21 | 2020-07-03 | 大连创新零部件制造公司 | Electric power steering system with multiple driving mode selections for commercial vehicle |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170627 |
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| WD01 | Invention patent application deemed withdrawn after publication |