CN104015794A - Power-assisted steering system of electric car - Google Patents
Power-assisted steering system of electric car Download PDFInfo
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- CN104015794A CN104015794A CN201410251326.1A CN201410251326A CN104015794A CN 104015794 A CN104015794 A CN 104015794A CN 201410251326 A CN201410251326 A CN 201410251326A CN 104015794 A CN104015794 A CN 104015794A
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- steering
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- controller
- torque sensor
- steering column
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Abstract
A power-assisted steering system of an electric car is characterized by comprising a steering wheel and a steering column connected to the steering wheel. The steering column is provided with a torque sensor, the torque sensor transmits the received twisting force to a controller, the controller amplifies the twisting force and then transmits the twisting force to an assistance motor, the assistance motor helps a driver to rotate a cardan shaft through a motor rack, and the cardan shaft drives front wheels of the car through a gear rack mechanism. The power-assisted steering system has the advantages in manufacturing cost and energy consumption due to the fact that many complicated multi-pillar structures such as a hydraulic system comprising a liquid storage tank, a hydraulic booster pump, a mechanical valve connected with a steering column, a hydraulic cylinder arranged on a steering mechanism, a piston capable of pushing a steering pull rod and the like are eliminated. The power-assisted steering system is simple in structure, low in production cost, user-friendly in steering and convenient to maintain.
Description
technical field:
The present invention relates to a kind of device in electronlmobil, relate in particular to a kind of electric power steering system of electric automobile.
background technology:
Electric automobile market dispirited, affects the development of electronlmobil, and Development of Electric Vehicles is obstructed, and is forcing innovation and the raising of electric vehicle engineering.
Steering boost system with regard to electronlmobil, the many newel frame cooperative mechanical formula hydraulic booster system also adopting at present, it is based on mechanical gear-rack steering mechanism, increased a whole set of hydraulic systems, comprised fluid reservoir, hydraulic booster pump, the mechanical valve being connected with Steering gear, the hydraulic actuating cylinder on steering hardware and can promote piston of steering track rod etc.
This branched post method of designing complex structure, cost is high, and maintenance is also inconvenient, in order to make the electronlmobil user result of use of accepting electronlmobil early, the present invention openly releases hereby a kind of, the simple energy-conservation non-branched post steering boost system of electronlmobil.
summary of the invention:
The object of this invention is to provide a kind of electronlmobil electric power steering design, make steering hardware simple as much as possible, energy-conservation.
The technical solution adopted in the present invention is: a kind of electronlmobil steering boost system, it is characterized in that: comprise bearing circle, be connected to the steering column on bearing circle, on steering column, be provided with torque sensor, torque sensor is transferred to controller by the twisting resistance receiving, and controller is delivered to assist motor after torsional forces is amplified, and assist motor helps chaufeur to rotate versatile spindle by motor tooth bar, versatile spindle is by pinion and rack, driving automobile front-wheel.
Further, described controller adopts TMS32LF2407A chip.
Further, in described controller, be provided with PID regulating control and Hall current sensor.
The beneficial effect that the present invention produces is: be first embodied in manufacturing cost and energy consumption, because it saves the branched rod structure of a lot of complexity.As a whole set of hydraulic systems, comprise fluid reservoir, hydraulic booster pump, the mechanical valve being connected with Steering gear, the hydraulic actuating cylinder on steering hardware and can promote piston of steering track rod etc.Therefore the present invention is simple in structure, and productive costs is low, turns to hommization, easy to maintenance.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
the specific embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
The present invention utilizes current feedback technology to set up, and the characteristic of utilizing motor torque and electric current to be directly proportional adopts the method for controlling motor armature electric current, realizes Power assisted control.
As shown in Figure 1, in whole electric boosting steering system, bearing circle 1 is arranged on one end of the steering column 2 of servo steering system, and torque sensor 3 is installed on steering column 2.When chaufeur steering wheel rotation 1, be that torque sensor 3 is while the moment of torsion of bearing circle 1 and rotation direction signal being detected, torque sensor 3 can be input to the dtc signal detecting in controller 4, the vehicle speed signal that controller 4 obtains dtc signal and car speed sensor in vehicle contrasts, and according to the matching relationship of moment of torsion and assist motor electric current, determine the target current that is input to assist motor 5.In received current, at the Hall current sensor of controller 4 inside by the difference of real-time detection practical electric current and target current, and utilize the PID regulating control of controller 4 inside to regulate, and adjust in real time the electric current of output, change at any time the level of torque of assist motor 5.
The control core of controller 4 is TMS320LF2407A chip, and when electronlmobil starts connection battery feed, controller can carry out self check to whole steering boost system, after self check is passed through, and closing relay and power-transfer clutch, steering boost system is started working.
Motor tooth bar 6 is installed on assist motor, when assist motor 5 rotates, by drive motor tooth bar 6 and with steering column 2 on screw-threaded engagement, steering angle is amplified.The pinion and rack 8 that torque after amplification is controlled on automobile front axle by versatile spindle 7, pinion and rack meshes driving automobile front-wheel 9 by gear and rotates.
Claims (3)
1. an electronlmobil steering boost system, it is characterized in that: comprise bearing circle (1), be connected to the steering column (2) on bearing circle (1), on steering column (2), be provided with torque sensor (3), torque sensor (3) is transferred to controller (4) by the twisting resistance receiving, controller (4) is delivered to assist motor (5) after torsional forces is amplified, assist motor (5) helps chaufeur to rotate versatile spindle (7) by motor tooth bar (6), versatile spindle (7) is by pinion and rack (8), driving automobile front-wheel (9).
2. a kind of electronlmobil steering boost system according to claim 1, is characterized in that: described controller (4) adopts TMS32LF2407A chip.
3. a kind of electronlmobil steering boost system according to claim 1, is characterized in that: described controller is provided with PID regulating control and Hall current sensor in (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410251326.1A CN104015794A (en) | 2014-06-09 | 2014-06-09 | Power-assisted steering system of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410251326.1A CN104015794A (en) | 2014-06-09 | 2014-06-09 | Power-assisted steering system of electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104015794A true CN104015794A (en) | 2014-09-03 |
Family
ID=51432887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410251326.1A Pending CN104015794A (en) | 2014-06-09 | 2014-06-09 | Power-assisted steering system of electric car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691443A (en) * | 2014-12-09 | 2016-06-22 | Dy株式会社 | Automatic steering device and steering device of golf-cart by utilization of PID control |
| CN111795925A (en) * | 2019-04-05 | 2020-10-20 | 保时捷股份公司 | Method for determining the coefficient of friction in an elastically integrated sub-system and device for determining the coefficient of friction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202624347U (en) * | 2012-05-04 | 2012-12-26 | 河南速达电动汽车科技有限公司 | Power-assisted steering device special for electric vehicle |
| CN103112491A (en) * | 2012-12-28 | 2013-05-22 | 江苏大学 | Electric power steering control system for electric automobiles, device and method therefore |
| CN203237281U (en) * | 2013-03-25 | 2013-10-16 | 山东天海科技股份有限公司 | Electric power steering system of small-sized pure electric sedan |
-
2014
- 2014-06-09 CN CN201410251326.1A patent/CN104015794A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202624347U (en) * | 2012-05-04 | 2012-12-26 | 河南速达电动汽车科技有限公司 | Power-assisted steering device special for electric vehicle |
| CN103112491A (en) * | 2012-12-28 | 2013-05-22 | 江苏大学 | Electric power steering control system for electric automobiles, device and method therefore |
| CN203237281U (en) * | 2013-03-25 | 2013-10-16 | 山东天海科技股份有限公司 | Electric power steering system of small-sized pure electric sedan |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691443A (en) * | 2014-12-09 | 2016-06-22 | Dy株式会社 | Automatic steering device and steering device of golf-cart by utilization of PID control |
| CN111795925A (en) * | 2019-04-05 | 2020-10-20 | 保时捷股份公司 | Method for determining the coefficient of friction in an elastically integrated sub-system and device for determining the coefficient of friction |
| CN111795925B (en) * | 2019-04-05 | 2023-06-06 | 保时捷股份公司 | Method for determining friction coefficient in elastic combination subsystem and friction coefficient determining device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |