CN110053662A - Automobile electric booster steering system and power-assisted steering control method - Google Patents
Automobile electric booster steering system and power-assisted steering control method Download PDFInfo
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- CN110053662A CN110053662A CN201910386806.1A CN201910386806A CN110053662A CN 110053662 A CN110053662 A CN 110053662A CN 201910386806 A CN201910386806 A CN 201910386806A CN 110053662 A CN110053662 A CN 110053662A
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- control unit
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- steering
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008859 change Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—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 present invention provides a kind of automobile electric booster steering systems, it includes steering wheel, steering shaft, electronic control unit, vehicle speed sensor, motor, manual adjusting device, prompt unit, steering wheel and steering axis connection, steering shaft is equipped with torque sensor, the connection of the dtc signal input port of torque sensor and electronic control unit, the connection of the speed signal input port of vehicle speed sensor and electronic control unit, motor is connect with electronic control unit, and the manual adjusting device and the prompt unit are electrically connected with the electronic control unit.Automobile electric booster steering system of the invention is convenient for production, will not permeability, and it can intelligently adjust power-assisted size, power-assisted steering control method of the invention voluntarily controls power-assisted by driver, and preventing from changing power-assisted automatically leads to danger caused by driver's false judgment.
Description
Technical field
The present invention relates to a kind of automobile electric booster steering system and power-assisted steering control methods.
Background technique
The steering system of conventional fuel oil automobile is driven by the mechanical drive hydraulic oil pump increasing using diesel oil or petrol engine
For pressure to lighten the load, steering wheel rotation carries out motor turning；Existing electric car be motor drive hydraulic oil pump pressurization with
Mitigate steering-load, the difference with conventional fuel oil automobile, which is only that, is simply changed in the source of fuel pump impeller power by engine
Motor.Existing electric car has the following disadvantages: a) on the basis of conventional fuel oil automobile, only will be originally by engine
Turn when ease of steering and high speed when driving oil pump to be changed to drive oil pump by motor, but cannot be considered in terms of electric car low speed
To stability；B), oil cylinder leakage low because there are energy conversion efficiencies, frictional heating etc. in the pressure for converting electrical energy into oil cylinder
Unavoidable defect, energy loss is serious, and transfer efficiency is extremely low；C) regardless of whether steering system is working, oil pump is all always
It is working, is wasting electric energy；D) power-assisted is identical under different road conditions, the difference but the practical hand of driver is had an effect, in bumpy sections
Driver turns to arduously, and in fastlink, and be easy to turn to excessive.
In view of this, it is necessary to which existing automobile electric booster steering system and power-assisted steering control method are changed
Into to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of automobile electric booster steering system and power-assisted steering control methods, to solve
Existing automobile force aid system transfer efficiency is low, waste electric energy, different road conditions power-assisteds are identical causes driver to rotate in complicated highway section
The laborious problem of steering wheel.
To achieve the above object, the present invention provides a kind of automobile electric booster steering systems, it includes steering wheel, turns to
Axis, electronic control unit, vehicle speed sensor, motor, manual adjusting device, prompt unit, steering wheel and steering axis connection, turn
Torque sensor, the dtc signal input port connection of torque sensor and electronic control unit, vehicle speed sensor are equipped with to axis
It is connect with the speed signal input port of electronic control unit, motor is connect with electronic control unit, described to manually adjust dress
It sets and is electrically connected with the electronic control unit with the prompt unit.
As a further improvement of the present invention, motor is equipped with position sensor, position sensor and electronic control unit
Position signal input port connection.
As a further improvement of the present invention, motor is additionally provided with current sensor, and current sensor and electronic control are single
The current signal input mouth connection of member.
As a further improvement of the present invention, motor is brushless, permanently excited direct current motor.
It as a further improvement of the present invention, further include that axis retransmits sensor, axis retransmits sensor and the axis of electronic control unit is believed again
The connection of number input port.
The manual adaptation unit includes the first key, the second key and third key, and the first key is smart key, the
Two keys and third key control power-assisted respectively and become larger and become smaller.
As a further improvement of the present invention, the present invention also provides a kind of power-assisted steering control method, include the following steps:
Position sensor detects the position signal of the steering shaft, and is sent to electronic control unit；
Current sensor sensed current signal, and it is sent to electronic control unit；
The power-assisted N1 of motor is calculated according to the location information and current signal of steering shaft for described control unit；
Square sensor detects the dtc signal of steering shaft, and is sent to electronic control unit；
Vehicle speed sensor detects the travel speed signal of automobile, and is sent to electronic control unit；
Axis retransmits the axis weight signal of sensor detection automobile, and is sent to electronic control unit；
Described control unit calculates current optimal theoretical power-assisted N2 according to dtc signal, travel speed signal, axis weight signal；
If described control unit judges that the difference of N1 and N2 is greater than n, then described control unit controls the prompt unit and issues
Prompt information；
User presses the first key, any one key in the second key or third key, and the prompt unit stops working,
Change the output power of the motor, completes power-assisted adjustment.
The beneficial effects of the present invention are: automobile electric booster steering system of the invention it is convenient for production, will not permeability, and can
Power-assisted size is adjusted with intelligence, power-assisted steering control method of the invention voluntarily controls power-assisted by driver, prevents from becoming automatically
Changing power-assisted leads to danger caused by driver's false judgment.
Detailed description of the invention
Fig. 1 is the schematic illustration of electric boosting steering system of the invention；
Fig. 2 is the structural schematic diagram of electric boosting steering system of the invention；
Fig. 3 is enlarged diagram at the A of Fig. 2.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
Unless otherwise defined, technical term or scientific term used in this application, which are should be in fields of the present invention, has general skill
The ordinary meaning that the personage of energy is understood." first " " second " and class used in present specification and claims
As word be not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.Equally, " one
It is a " or the similar word such as " one " do not indicate that quantity limits yet, but indicate that there are at least one." multiple " or " several " table
Show two and two or more.Unless otherwise noted, the similar word such as " front ", " rear portion ", " lower part " and/or " top " is only
Convenient for explanation, and it is not limited to a position or a kind of spatial orientation.The similar word such as " comprising " or "comprising" means
It appears in element or object before " comprising " or "comprising" and covers and appear in " comprising " or "comprising" presented hereinafter
Element or object and its equivalent, it is not excluded that other elements or object.The similar word such as " connection " or " connected " is simultaneously
Non-limiting and may include electrical connection in physics or mechanical connection, either direct or indirectly.?
Present specification and the "an" of singular used in the attached claims, " described " and "the" be also intended to including
Most forms, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to
It and include that one or more associated any or all of project listed may combine.
As shown in Fig. 1 ~ 3, a kind of automobile electric booster steering system, it includes steering wheel 1, steering shaft 2, electronic control list
First 3, vehicle speed sensor 4, motor 5, manual adjusting device 8, prompt unit 9, steering wheel 1 are connect with steering shaft 2, steering shaft 2
Equipped with torque sensor 6, torque sensor 6 is connect with the dtc signal input port of electronic control unit 3, vehicle speed sensor 4
It is connect with the speed signal input port of electronic control unit 3, motor 5 is connect with electronic control unit 3.
The motor 5 of the present embodiment is equipped with position sensor 51, the position letter of position sensor 51 and electronic control unit 3
The connection of number input port.
The motor 5 of the present embodiment is additionally provided with current sensor 52, the electric current of current sensor 52 and electronic control unit 3
Signal input port connection.
The motor 5 of the present embodiment is brushless, permanently excited direct current motor.Brushless, permanently excited direct current motor (Brushless DC
It Motor) is a kind of novel motor occurred with the development of permanent-magnet material technology, semiconductor technology and control technology.Forever
Magnetic brushless direct current motor is the AC permanent magnet synchronous motor that electronics commutation operation is used according to rotor-position feedback information.Forever
Magnetic brushless direct current motor has the advantages that high-power, high function and micromation.
The present embodiment further includes that axis retransmits sensor 7, and axis retransmits the axis weight signal input of sensor 7 and electronic control unit 3
Port connection.
Torque sensor 6 is the detection of the torsional moment perception to steering shaft 2.Torque sensor 6 becomes the physics of torsion
Change is converted into accurate 2 dtc signal of steering shaft.Position sensor 51 inputs a signal into electronic control unit 3, makes to be controlled electronically
Unit 3 can the current position of real-time detection rotor (i.e. steering shaft).
Electronic control unit 3(ECU) it is made of microcomputer, input, output and control circuit etc., it is that motorcar electric helps
The core of power steering system, it is passed according to the position that torque sensor 6, vehicle speed sensor 4, axis retransmit sensor 5 and motor 5
The signal of the inputs such as sensor 51, current sensor 52 carries out analytical calculation, obtains optimization control parameter.In addition, electronic control is single
Member 3 is also equipped with safeguard protection and self-diagnosing function.During automobile is advanced, electronic control unit 3 constantly acquires each component
Working signal, once system component operation irregularity, control motor power-off separation, while Analysis on Fault Diagnosis is carried out, output is aobvious
Show fault-signal.
When manipulating steering wheel 1, torque sensor 6 constantly measures the dtc signal of steering shaft 2, the dtc signal and vehicle
Speed signal that fast sensor 4 is measured while it being input to electronic control unit 3, electronic control unit 3 is according to dtc signal and vehicle
Fast signal determines the size and Orientation of power torque, i.e., the electric current and rotation direction of selected motor 5.
The dtc signal of steering shaft 2, the speed signal of automobile, automobile axis weight signal be used to determine the power-assisted of motor 5
Level of torque and direction, 5 current signal of motor are used for the closed-loop control of motor.
The manual adjusting device 8 and the prompt unit 9 are electrically connected with the electronic control unit 3.It adjusts manually
At least 3 keys of engagement positions 8, the first key are smart key, and pressing can be according to the electronic control singly after smart key
The recommendation power-assisted that 3 judgement of member obtains controls the operation of the motor 5, and the prompt unit 9 in running car situation to send out
User is reminded when raw greatly change, for example drives to up-and-down surfaced road etc. from flat roadside.
The second key and third key key of the manual adjusting device 8 are the size for controlling power-assisted respectively.
The present invention also provides a kind of power-assisted steering control methods, specifically comprise the following steps:
Position sensor 51 detects the position signal of the steering shaft 2, and is sent to electronic control unit 3；
52 sensed current signal of current sensor, and it is sent to electronic control unit 3；
The power-assisted N1 of motor 5 is calculated according to the location information and current signal of steering shaft 2 for described control unit；
Square sensor 6 detects the dtc signal of steering shaft 2, and is sent to electronic control unit 3；
Vehicle speed sensor 4 detects the travel speed signal of automobile, and is sent to electronic control unit 3；
Axis retransmits sensor 5 and detects the axis weight signal of automobile, and is sent to electronic control unit 3；
Described control unit 3 calculates current optimal theoretical power-assisted N2 according to dtc signal, travel speed signal, axis weight signal；
If described control unit 3 judges that the difference of N1 and N2 is greater than n, then described control unit 3 controls the prompt unit 9 and sends out
Prompt information out；
User presses the first key, any one key in the second key or third key, and the prompt unit 9 stops work
Make, change the output power of the motor 5, completes power-assisted adjustment.
Certainly, user can also carry out the size of power-assisted at any time by the second key of control and third key
Adjustment.
The present invention can provide optimal steering assistance power under the various driving cycles of automobile, reduce by Uneven road institute
The caused disturbance to steering system, improves the steering characteristic of automobile, is swift in motion, accurate positioning；Mitigate automobile to run at a low speed
When steering force, improve steering stability when galloping, and then improve the safety of automobile, and can pass through
Different steering hand force properties is set to meet the different needs using object.It is the most key, it can be gone out most with intelligence computation
Good power-assisted, and reality is adjusted in person by user, is prevented because power-assisted mutation causes driver that unexpected injury occurs.
Only when turning to, motor 5 just provides steering assistance power to the present invention, thus can be reduced fuel consumption, saves electricity
Energy；Oil pump, belt, belt pulley, hydraulic hose, hydraulic oil and sealing element etc. are eliminated, part greatly reduces than the prior art,
Thus its quality is lighter, more compact structure, is also easier in terms of installation position selection, and can reduce noise.
The present invention does not have hydraulic circuit, is easier to adjust and detect than the prior art, assembly automation degree is higher, and can
It with the program different by setting, is quickly matched with different automobile types, thus can be shortened production and development cycle.
Oil leakage problem is not present in automobile electric booster steering system of the invention, eliminates hydraulic fluid leak in hydraulic booster
Problem can substantially reduce warranty costs, reduce the pollution to environment, have the advantages that environmental protection, and have better low temperature work
Make performance.Power-assisted steering control method of the invention voluntarily controls power-assisted by driver, and preventing from changing power-assisted automatically causes to drive
Danger caused by the person's of sailing false judgment.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. a kind of automobile electric booster steering system, it is characterised in that: it includes steering wheel, steering shaft, electronic control unit, vehicle
Fast sensor, motor, manual adjusting device, prompt unit, steering wheel and steering axis connection, steering shaft are equipped with torque sensing
The dtc signal input port connection of device, torque sensor and electronic control unit, vehicle speed sensor and electronic control unit
The connection of speed signal input port, motor are connect with electronic control unit, the manual adjusting device and the prompt unit
It is electrically connected with the electronic control unit.
2. automobile electric booster steering system according to claim 1, it is characterised in that: motor is equipped with position sensing
The position signal input port of device, position sensor and electronic control unit connects.
3. automobile electric booster steering system according to claim 2, it is characterised in that: motor is additionally provided with current sense
The current signal input mouth of device, current sensor and electronic control unit connects.
4. automobile electric booster steering system according to claim 3, it is characterised in that: motor is DC permanent-magnetic brushless
Motor.
5. automobile electric booster steering system according to claim 4, it is characterised in that: further include that axis retransmits sensor, axis
Retransmit the axis weight signal input port connection of sensor and electronic control unit.
6. automobile electric booster steering system according to claim 5, it is characterised in that: the manual adaptation unit includes
First key, the second key and third key, the first key are smart key, and the second key and third key control power-assisted respectively
Become larger and becomes smaller.
7. a kind of power-assisted steering control method using automobile electric booster steering system as claimed in claim 6, it is characterised in that:
Include the following steps:
Position sensor detects the position signal of the steering shaft, and is sent to electronic control unit；
Current sensor sensed current signal, and it is sent to electronic control unit；
The power-assisted N1 of motor is calculated according to the location information and current signal of steering shaft for described control unit；
Square sensor detects the dtc signal of steering shaft, and is sent to electronic control unit；
Vehicle speed sensor detects the travel speed signal of automobile, and is sent to electronic control unit；
Axis retransmits the axis weight signal of sensor detection automobile, and is sent to electronic control unit；
Described control unit calculates current optimal theoretical power-assisted N2 according to dtc signal, travel speed signal, axis weight signal；
If described control unit judges that the difference of N1 and N2 is greater than n, then described control unit controls the prompt unit and issues
Prompt information；
User presses the first key, any one key in the second key or third key, and the prompt unit stops working,
Change the output power of the motor, completes power-assisted adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386806.1A CN110053662A (en) | 2019-05-10 | 2019-05-10 | Automobile electric booster steering system and power-assisted steering control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386806.1A CN110053662A (en) | 2019-05-10 | 2019-05-10 | Automobile electric booster steering system and power-assisted steering control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110053662A true CN110053662A (en) | 2019-07-26 |
Family
ID=67322731
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910386806.1A Pending CN110053662A (en) | 2019-05-10 | 2019-05-10 | Automobile electric booster steering system and power-assisted steering control method |
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| CN (1) | CN110053662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455535A (en) * | 2020-12-08 | 2021-03-09 | 斯沃博达汽车电子（昆山）有限公司 | Automobile steering power-assisted system module unit and production process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1159469A (en) * | 1997-08-27 | 1999-03-02 | Honda Motor Co Ltd | Electric power steering device |
| JP2001278088A (en) * | 2000-03-31 | 2001-10-10 | Honda Motor Co Ltd | Motor-driven power steering device |
| CN201882140U (en) * | 2010-12-15 | 2011-06-29 | 东莞洲亮通讯科技有限公司 | Electric power steering system of electromobile |
| CN105799771A (en) * | 2016-03-16 | 2016-07-27 | 奇瑞汽车股份有限公司 | Manual/automatic switching automobile steering device |
| CN207029279U (en) * | 2017-06-29 | 2018-02-23 | 浙江吉利控股集团有限公司 | A kind of optional formula power steering apparatus and vehicle |
| CN210027576U (en) * | 2019-05-10 | 2020-02-07 | 斯沃博达汽车电子（昆山）有限公司 | Electric power steering system for automobile |
-
2019
- 2019-05-10 CN CN201910386806.1A patent/CN110053662A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1159469A (en) * | 1997-08-27 | 1999-03-02 | Honda Motor Co Ltd | Electric power steering device |
| JP2001278088A (en) * | 2000-03-31 | 2001-10-10 | Honda Motor Co Ltd | Motor-driven power steering device |
| CN201882140U (en) * | 2010-12-15 | 2011-06-29 | 东莞洲亮通讯科技有限公司 | Electric power steering system of electromobile |
| CN105799771A (en) * | 2016-03-16 | 2016-07-27 | 奇瑞汽车股份有限公司 | Manual/automatic switching automobile steering device |
| CN207029279U (en) * | 2017-06-29 | 2018-02-23 | 浙江吉利控股集团有限公司 | A kind of optional formula power steering apparatus and vehicle |
| CN210027576U (en) * | 2019-05-10 | 2020-02-07 | 斯沃博达汽车电子（昆山）有限公司 | Electric power steering system for automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455535A (en) * | 2020-12-08 | 2021-03-09 | 斯沃博达汽车电子（昆山）有限公司 | Automobile steering power-assisted system module unit and production process |
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