CN107298128A - The EPS and its mode switching method of a kind of changeable power steering pattern - Google Patents
The EPS and its mode switching method of a kind of changeable power steering pattern Download PDFInfo
- Publication number
- CN107298128A CN107298128A CN201710583754.8A CN201710583754A CN107298128A CN 107298128 A CN107298128 A CN 107298128A CN 201710583754 A CN201710583754 A CN 201710583754A CN 107298128 A CN107298128 A CN 107298128A
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- China
- Prior art keywords
- fet
- electrically connected
- mode
- module
- chip microcomputer
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- 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.)
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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
Abstract
The present invention relates to a kind of EPS of changeable power steering pattern, including control module ECU, steering column tube, motor, clutch, reducing gear and torque sensor, control module ECU is connected by CAN with vehicle-mounted computer communication；Control module ECU includes single-chip microcomputer, the single-chip microcomputer is electrically connected with power module, single-chip microcomputer is also electrically connected with ignition switch, torque sensor passes through amplification module and the monolithic mechatronics, single-chip microcomputer also includes the first control port and the second control port, first control port and the second control port are electrically connected to drive module, and the serial ports of single-chip microcomputer is electrically connected with CAN module.The present invention can be communicated by CAN and vehicle-mounted computer, obtain GES and mode signal, the switching of power steering pattern is realized according to model selection, the electric current of controlled motor is automatically controlled so as to provide power-assisted for Vehicular turn according to power-assisted curve, is that the steering operation of driver is provided convenience.
Description
Technical field
The present invention relates to Control of Electric Vehicles technical field, more particularly to a kind of EPS systems of changeable power steering pattern
System and its mode switching method.
Background technology
With the development of electric vehicle engineering, many vehicles are by electronic power assist steering in current low-speed electronic automobile market
Tubing string EPS is as standard configuration, to meet the most of consumer demand in market.But the different consumer of in the market is according to different road conditions
In the case of it is different to steering force demand, the lighter steering force of operator demand comes fatigue-relieving sense, outskirts of a town under the low speed road conditions of city
Operator demand is steady under high-speed road conditions keeps manipulating sense, and existing EPS is not complete enough to the pattern switching of power steering
It is kind.Accordingly, it would be desirable to develop the electronic power assist steering tubing string assembly of changeable power steering pattern.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of EPS and its pattern of changeable power steering pattern
Switching method, allows hand over power steering pattern, assists driver to realize steering operation.
In order to solve the above technical problems, the technical scheme is that：A kind of EPS systems of changeable power steering pattern
System, including control module ECU, steering column tube, motor, clutch, reducing gear and torque sensor, the control module
ECU is connected by CAN with vehicle-mounted computer communication；The control module ECU includes single-chip microcomputer, and the power supply of the single-chip microcomputer is defeated
Enter end to electrically connect with power module, the torque sensor passes through amplification module and the monolithic mechatronics, the single-chip microcomputer
Ignition switch is also electrically connected with, the single-chip microcomputer is also included for the first control port of output motor control signal and the second control
Port processed, first control port and the second control port are electrically connected to the drive module operated for motor, described
The serial ports of single-chip microcomputer is electrically connected with CAN module, and the CAN module is electrically connected to vehicle-mounted computer by CAN.
As preferred technical scheme, the power module includes power supply chip BD4275.
As preferred technical scheme, the drive module includes the first FET, the second FET, the 3rd effect
It should manage and be electrically connected to power end, described with the 4th FET, the drain electrode of first FET and the 3rd FET
The source electrode of one FET is electrically connected with the drain electrode of the second FET, the source electrode of the 3rd FET and the 4th field-effect
The drain electrode electrical connection of pipe, the source electrode of second FET and the 4th FET is electrically connected to earth terminal, the single-chip microcomputer
The first control port electrically connected with first FET and the second fet gate, the single-chip microcomputer second control
Port is electrically connected with the 3rd FET and the 4th fet gate, and the motor is connected electrically in first field-effect
Between the source electrode of the source electrode of pipe and the 3rd FET.
It is used as preferred technical scheme, first FET, the second FET, the 3rd FET and the 4th
The first voltage-regulator diode, the second voltage-regulator diode, the pole of the 3rd voltage stabilizing two have been electrically connected between the drain electrode of effect pipe and source electrode
Pipe and the 4th voltage-regulator diode.
As preferred technical scheme, the CAN module includes CAN transceiver chip MC33901.
A kind of method that EPS switches power steering pattern, comprises the following steps：
The power-assisted output parameter for the various patterns that prestored in control module ECU, it is default mode to set one of pattern；
After system electrification and initialization, the pattern count of storage before shutdown is searched in control module ECU memory cell
According to if memory module data, the pattern of storage is set into present mode；If non-memory module data, present mode is automatic
It is set to default mode；
Control module ECU reads torque sensor signal；
Control module ECU reads GES and mode signal by CAN module；
The mode signal of the mode signal of reception and present mode is compared, if mode signal is identical, performed next
Step；If mode signal is different, present mode is set according to the mode signal received；
Present mode type is judged according to present mode signal；
Assist rate under present mode is calculated according to speed, and according to assist rate and torque signal, controls the electricity of motor
Stream, motor exports auxiliary force by output shaft.
It is further comprising the steps of as preferred technical scheme：The control module ECU is according to the pattern letter received
Number set present mode after, by CAN module to vehicle-mounted computer send feedback signal, the feedback signal include present mode number
According to.
It is further comprising the steps of as preferred technical scheme：The control module ECU detections igniting switching signal, if
Ignition switch is closed, and the control module ECU stores hint instructions, the control mould to vehicle-mounted computer output mode
The store instruction that block ECU feeds back according to vehicle-mounted computer, stores present mode.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：The present invention can by CAN with it is vehicle-mounted
Dataphone, obtains GES and mode signal, the switching of power steering pattern is realized according to model selection, according to power-assisted
Curve automatically controls the electric current of controlled motor to provide power-assisted for Vehicular turn, is provided just for the steering operation of driver
Profit.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the EPS of changeable power steering pattern of the embodiment of the present invention；
Fig. 2 is the theory diagram of control module ECU in Fig. 1；
Fig. 3 is the circuit theory diagrams of power module in Fig. 2；
Fig. 4 is the circuit theory diagrams of amplification module in Fig. 2；
Fig. 5 is the circuit theory diagrams of motor drive module in Fig. 2；
Fig. 6 is the circuit theory diagrams of CAN module in Fig. 2；
Fig. 7 is a kind of flow chart of the method for EPS switching power steering pattern of the embodiment of the present invention；
In figure：1- control modules ECU；2- motor；3- torque sensors；4- clutches；5- reducing gears.
Embodiment
As shown in figure 1, a kind of EPS of changeable power steering pattern, including control module ECU1, steering column tube,
Motor 2, clutch 4, reducing gear 5 and torque sensor 3, control module ECU1 is communicated by CAN and vehicle-mounted computer
Connection.
As shown in Fig. 2 control module ECU includes single-chip microcomputer, the power input of single-chip microcomputer is electrically connected with power module, is turned round
Square sensor is by amplification module and monolithic mechatronics, and single-chip microcomputer is also electrically connected with ignition switch, and single-chip microcomputer also includes being used for
The first control port and the second control port of output motor control signal, the first control port and the second control port electricity
The drive module operated for motor is connected to, the serial ports of single-chip microcomputer is electrically connected with CAN module, and CAN module is total by CAN
Line is electrically connected to vehicle-mounted computer.
As shown in figure 3, in the present embodiment, power module includes power supply chip BD4275, and power supply chip BD4275 is by 12V's
Dc source is converted into 5V dc source and powered for each component.
As shown in figure 4, torque sensor signal NIUJU_SignalI is electrically connected to amplifier IC1 input in the same direction, warp
Signal amplifies, and amplifier IC1 output end NIUJU_SignalO is electrically connected to single-chip microcomputer.
As shown in figure 5, drive module include the first FET Q1, the second FET Q2, the 3rd FET Q3 and
4th FET Q4, the first FET Q1 and the 3rd FET Q3 drain electrode are electrically connected to power end Vcc, first effect
Should pipe Q1 source electrode electrically connected with the second FET Q2 drain electrode, the 3rd FET Q3 source electrode and the 4th FET Q4
Drain electrode electrical connection, the second FET Q2 and the 4th FET Q4 source electrode is electrically connected to earth terminal, the first of single-chip microcomputer
Control port Ctrl1 is electrically connected with the first FET Q1 and the second FET Q2 grids, the second control port of single-chip microcomputer
Ctrl2 is electrically connected with the 3rd FET Q3 and the 4th FET Q4 grids, and motor is connected electrically in the first FET Q1's
Between source electrode and the 3rd FET Q3 source electrode.
First FET Q1, the second FET Q2, the 3rd FET Q3 and the 4th FET Q4 drain electrode and
The first voltage-regulator diode VD1, the second voltage-regulator diode VD2, the 3rd voltage-regulator diode VD3 and have been electrically connected between source electrode
Four voltage-regulator diode VD4.
As shown in fig. 6, CAN module includes CAN transceiver chip MC33901, CAN transceiver chip MC33901 CAN-H
CAN signal is received with CAN-L, CAN transceiver chip MC33901 pin STD, RXD, TXD are electrically connected to single-chip microcomputer.
As shown in fig. 7, a kind of EPS switches the method for power steering pattern, comprise the following steps：
The power-assisted output parameter for the various patterns that prestored in control module ECU, and one of pattern is set to acquiescence
Pattern；
After system electrification and initialization, the pattern count of storage before shutdown is searched in control module ECU memory cell
According to if memory module data, the pattern of storage is set into present mode；If non-memory module data, present mode is automatic
It is set to default mode；
Control module ECU reads torque sensor signal；
Control module ECU reads GES and mode signal by CAN module；
The mode signal of the mode signal of reception and present mode is compared, if mode signal is identical, performed next
Step；If mode signal is different, present mode is set according to the mode signal that receives, control module ECU is by CAN module to car
Carry computer and send feedback signal, feedback signal includes current mode data, and power steering pattern is shown on vehicle-mounted computer；
Judged according to present mode signal in present mode type, the present embodiment, the power steering pattern prestored there are two kinds,
Current power steering pattern is judged according to the signal of present mode；
Assist rate under present mode is calculated according to speed, and according to assist rate and torque signal, controls the electricity of motor
Stream, motor exports auxiliary force by output shaft.
It is further comprising the steps of in this method：Control module ECU detection igniting switching signals, are closed if ignition switch is in
State, control module ECU stores hint instructions to vehicle-mounted computer output mode, and control module ECU feeds back according to vehicle-mounted computer
Store instruction, stores present mode.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of EPS of changeable power steering pattern, including control module ECU, steering column tube, motor, clutch,
Reducing gear and torque sensor, it is characterised in that：The control module ECU is connected by CAN with vehicle-mounted computer communication；
The control module ECU includes single-chip microcomputer, and the power input of the single-chip microcomputer is electrically connected with power module, the torque sensing
Device is by amplification module and the monolithic mechatronics, and the single-chip microcomputer is also electrically connected with ignition switch, and the single-chip microcomputer is also wrapped
Include the first control port and the second control port for output motor control signal, first control port and the second control
Port is electrically connected to the drive module operated for motor, and the serial ports of the single-chip microcomputer is electrically connected with CAN module, described
CAN module is electrically connected to vehicle-mounted computer by CAN.
2. a kind of EPS of changeable power steering pattern as claimed in claim 1, it is characterised in that：The power supply mould
Block includes power supply chip BD4275.
3. a kind of EPS of changeable power steering pattern as claimed in claim 1, it is characterised in that：The driving mould
Block include the first FET, the second FET, the 3rd FET and the 4th FET, first FET and
The drain electrode of 3rd FET is electrically connected to power end, the source electrode of first FET and the drain electrode electricity of the second FET
Connection, the source electrode of the 3rd FET is electrically connected with the drain electrode of the 4th FET, second FET and the 4th
The source electrode of FET is electrically connected to earth terminal, the first control port of the single-chip microcomputer and first FET and second
Fet gate is electrically connected, the second control port of the single-chip microcomputer and the 3rd FET and the 4th FET grid
Pole is electrically connected, and the motor is connected electrically between the source electrode of the source electrode of first FET and the 3rd FET.
4. a kind of EPS of changeable power steering pattern as claimed in claim 3, it is characterised in that：Described first
Has been electrically connected between effect pipe, the second FET, the 3rd FET and the drain electrode of the 4th FET and source electrode
One voltage-regulator diode, the second voltage-regulator diode, the 3rd voltage-regulator diode and the 4th voltage-regulator diode.
5. a kind of EPS of changeable power steering pattern as claimed in claim 1, it is characterised in that：The CAN module
Including CAN transceiver chip MC33901.
6. a kind of method that EPS switches power steering pattern, it is characterised in that comprise the following steps：
The power-assisted output parameter for the various patterns that prestored in control module ECU, it is default mode to set one of pattern；
After system electrification and initialization, the mode data of storage before shutdown is searched in control module ECU memory cell, if
Memory module data, present mode is set to by the pattern of storage；If non-memory module data, present mode is automatically set as
Default mode；
Control module ECU reads torque sensor signal；
Control module ECU reads GES and mode signal by CAN module；
The mode signal of the mode signal of reception and present mode is compared, if mode signal is identical, next step is performed；If
Mode signal is different, and present mode is set according to the mode signal received；
Present mode type is judged according to present mode signal；
Assist rate under present mode is calculated according to speed, and according to assist rate and torque signal, controls the electric current of motor, electricity
Motivation exports auxiliary force by output shaft.
7. the method that a kind of EPS as claimed in claim 6 switches power steering pattern, it is characterised in that：Also include with
Lower step：The control module ECU according to the mode signal that receives after present mode is set, by CAN module to vehicle-mounted
Computer sends feedback signal, and the feedback signal includes current mode data.
8. the method that a kind of EPS as claimed in claim 6 switches power steering pattern, it is characterised in that：Also include with
Lower step：The control module ECU detections igniting switching signal, if ignition switch is closed, the control module ECU
Hint instructions, the store instruction that the control module ECU feeds back according to vehicle-mounted computer, storage are stored to vehicle-mounted computer output mode
Present mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583754.8A CN107298128A (en) | 2017-07-18 | 2017-07-18 | The EPS and its mode switching method of a kind of changeable power steering pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583754.8A CN107298128A (en) | 2017-07-18 | 2017-07-18 | The EPS and its mode switching method of a kind of changeable power steering pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107298128A true CN107298128A (en) | 2017-10-27 |
Family
ID=60133823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710583754.8A Pending CN107298128A (en) | 2017-07-18 | 2017-07-18 | The EPS and its mode switching method of a kind of changeable power steering pattern |
Country Status (1)
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| CN (1) | CN107298128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649479A (en) * | 2018-12-11 | 2019-04-19 | 北汽福田汽车股份有限公司 | The control method and device of automobile electric power-assisted steering |
| CN110027611A (en) * | 2019-05-05 | 2019-07-19 | 奇瑞汽车股份有限公司 | Response policy of the electric boosting steering system to Lane Keeping System torque request |
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| CN105799771A (en) * | 2016-03-16 | 2016-07-27 | 奇瑞汽车股份有限公司 | Manual/automatic switching automobile steering device |
| CN206031463U (en) * | 2016-07-19 | 2017-03-22 | 南昌工学院 | Electronic power assisted steering control system |
| CN106741149A (en) * | 2016-05-26 | 2017-05-31 | 上海拿森汽车电子有限公司 | The driving model method for handover control of electric boosting steering system |
| CN206926717U (en) * | 2017-07-18 | 2018-01-26 | 山东梅拉德能源动力科技有限公司 | A kind of EPS of changeable power steering pattern |
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- 2017-07-18 CN CN201710583754.8A patent/CN107298128A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015023A (en) * | 1997-06-26 | 2000-01-18 | Honda Giken Kogyo Kabushiki Kaisha | Electric power steering apparatus |
| US20020143449A1 (en) * | 2001-03-30 | 2002-10-03 | Akio Yasuda | Device and method for setting steering characteristics of electric power steering |
| CN2851056Y (en) * | 2005-11-11 | 2006-12-27 | 许倍强 | Electric assisted steering system with direction-stabilizing function |
| CN104071224A (en) * | 2014-06-08 | 2014-10-01 | 山东天海科技股份有限公司 | Electric power steering system of new energy vehicle and control method of electric control unit thereof |
| CN205113424U (en) * | 2015-11-17 | 2016-03-30 | 淮安信息职业技术学院 | Electricelectric moves electronic power -assisted steering central controller of bus |
| CN105799771A (en) * | 2016-03-16 | 2016-07-27 | 奇瑞汽车股份有限公司 | Manual/automatic switching automobile steering device |
| CN106741149A (en) * | 2016-05-26 | 2017-05-31 | 上海拿森汽车电子有限公司 | The driving model method for handover control of electric boosting steering system |
| CN206031463U (en) * | 2016-07-19 | 2017-03-22 | 南昌工学院 | Electronic power assisted steering control system |
| CN206926717U (en) * | 2017-07-18 | 2018-01-26 | 山东梅拉德能源动力科技有限公司 | A kind of EPS of changeable power steering pattern |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649479A (en) * | 2018-12-11 | 2019-04-19 | 北汽福田汽车股份有限公司 | The control method and device of automobile electric power-assisted steering |
| CN110027611A (en) * | 2019-05-05 | 2019-07-19 | 奇瑞汽车股份有限公司 | Response policy of the electric boosting steering system to Lane Keeping System torque request |
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Address after: 262404 building 16, No. 2, Zhuliu bidewen Road, Changle County, Weifang City, Shandong Province Applicant after: Reading Automobile Group Co.,Ltd. Address before: 262404 building 16, No. 2, Zhuliu bidewen Road, Changle County, Weifang City, Shandong Province Applicant before: SHANDONG MEILADE ENERGY & POWER TECHNOLOGY Co.,Ltd. |