CN101244725A - Active steering transmission device of active steering system of vehicle - Google Patents
Active steering transmission device of active steering system of vehicle Download PDFInfo
- Publication number
- CN101244725A CN101244725A CNA2008100267727A CN200810026772A CN101244725A CN 101244725 A CN101244725 A CN 101244725A CN A2008100267727 A CNA2008100267727 A CN A2008100267727A CN 200810026772 A CN200810026772 A CN 200810026772A CN 101244725 A CN101244725 A CN 101244725A
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- active steering
- wheel
- planetary
- internally toothed
- toothed annulus
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Abstract
The invention discloses an active steering transmission for an automobile active steering system, comprising a mechanical transmission and a power driving device; the mechanical transmission comprises two groups of parallel NGW planetary gear drive transmission mechanisms; a central gear and a first planetary gear and a first internal gear ring form a planetary line I; the central gear, a second planetary gear and a second internal gear ring form a planetary line II; two planetary lines share the same central gear; an input shaft is connected with a first planet carrier; an output shaft is connected with a second planet carrier; the second internal gear ring is fixed; the first internal gear ring is fixedly connected with a worm gear; a motor drives the worm gear to rotate. The transmission adopting mechanical connection has high safety; the power driving device drives the internal gear ring through the planet carrier to output, achieving active steering output, which is a deceleration transmission; the small driving moment of the motor and the worm and gear mechanism can reduce the size of mechanism, thus reducing cost and space.
Description
Technical field
The present invention relates to automobile steering system, particularly relate to the active steering transmission device of active steering system of vehicle.
Background technology
Active steering system of vehicle is that moving servo steering system (EPS) a new generation afterwards of relay turns to technology.
" active steering " is meant: except the steering operation of chaufeur, automobile self also has the function of turning to, and promptly by the adjusting of active to wheel turning angle, improves stability, active safety and the handling comfort of vehicle.Active front steering system mainly contains two kinds of patterns: 1. the mechanical type stack turns to; 2. steering-by-wire.
It is technical that present active steering Study on Technology great majority concentrate on steering-by-wire.Fig. 1 adopts more wire-controlled steering system (Steer by Wire system is called for short the SBW system) at present, and basic composition is: bearing circle 1, and motor 2, controller 3 turns to drive motor 4, deflector 5.Wherein: motor 2 provides back positive rotation moment or applies rotational resistance torque for bearing circle 1 by transmission device; Turn to drive motor 4 to provide the steering torque drive wheels to turn to for deflector 5; Controller 3 usefulness network lines with motor 2, turn to drive motor 4 and various sensor (corner and torque sensor, car speed sensor, steered wheel rotary angle transmitter etc. that comprise bearing circle 1) to be connected.Principle of work is: controller 3 judges according to the signal of all the sensors, calculates the wheel turning angle of needs and time positive rotation moment or the rotational resistance torque that bearing circle 1 needs, and control motor 2 and 4 is achieved.The advantage of SBW system is: cancelled the mechanical connection between bearing circle and the deflector, it is little to take up space, and is convenient to arrange, ground-surface impacts and also can directly not pass on the hand of driver.Shortcoming is: poor stability, owing to cancelled mechanical connection, (for example outage) driver can't handle and turn to when system breaks down, and causes traffic accident easily.
Fig. 2 is the active steering system of vehicle of Bayerische Motorne Werke Aktiengeellschaft, and it is a kind of mechanical type superposition steering system, and method is that bearing circle is disconnected to the steering shaft between the deflector, transmission device of middle increase, this transmission device basic composition is: input shaft 11, sun wheel 12, planetary wheel 13, internally toothed annulus 14, pinion carrier 15 (the pinion carrier outer ring is a worm gear), worm screw 16 (being connected) with motor, internally toothed annulus 17, planetary wheel 18, sun wheel 19, output shaft 20.Annexation is: an end of input shaft 11 is connected with bearing circle, the other end and sun wheel 12 connect, sun wheel 12, planetary wheel 13, internally toothed annulus 14, pinion carrier 15 are formed a NGW type epicyclic gear transmission, and (annotate: the NGW type is meant by sun wheel, planetary wheel, internally toothed annulus, pinion carrier 4 elements to be formed, their drive connection is engagement in planetary wheel and the internally toothed annulus, sun wheel and planetary wheel external toothing, planetary wheel is a composite gear), internally toothed annulus 14 is fixed.Sun wheel 19, planetary wheel 18, internally toothed annulus 17, pinion carrier 15 are formed another NGW type epicyclic gear transmission, and the pinion carrier 15 of two epicyclic gear transmissiones is shared, and transmitting ratio also is the same; One end of output shaft 20 is connected with the input shaft of deflector, and the other end and sun wheel 19 connect; Worm screw 16 is used motor-driven, the worm gear engagement on worm screw 16 and internally toothed annulus 17 outer rings.Principle of work is: when steering wheel rotation (being input shaft 11) corner ω 1, if worm screw 16 is motionless, then internally toothed annulus 17 does not rotate, and the input corner passes to output shaft 20 through sun wheel 12, planetary wheel 13, pinion carrier 15, planetary wheel 18, sun wheel 19, output corner is ω 1, transmitting ratio=1.If motor-driven worm screw 16 is when also rotating, internally toothed annulus 17 is driven in rotation, and changed overall gear ratio this moment, so the real output corner is changed and is ω 2, transmitting ratio=ω 1/ ω 2.The advantage of this steering swivel system is: 1. when the active steering control part breaks down (worm screw 16 is pinned automatically), still can be as common deflector normal running, safety is good; 2. have inheritance, can on existing deflector basis, increase the ACTIVE CONTROL part.But also there is following deficiency in this steering swivel system: when motor-driven worm screw 16 is rotated, be by internally toothed annulus 17, planetary wheel 18, sun wheel 19 transmissions output is that the speedup transmission (is annotated: transmitting ratio=Z
a/ Z
b＜1, Z wherein
aBe the sun wheel number of teeth, Z
bBe the internally toothed annulus number of teeth), this just requires the bigger drive torque of motor and Worm and Worm Gear Driving mechanism, has caused bigger load of mechanism and bigger size.
Summary of the invention
The objective of the invention is to overcome the problem that prior art exists, provide that a kind of size is less, safe, the active steering transmission device of the active steering system of vehicle being convenient to arrange.
Purpose of the present invention can realize by following technical solution.
A kind of active steering transmission device of active steering system of vehicle is installed between bearing circle and the deflector, has comprised a mechanical drive and a Power Drive Unit, and described Power Drive Unit is made up of motor, worm and worm wheel; Worm and wheel engagement and by motor-driven; Described mechanical drive is made up of two groups of NGW type planetary gear mechanisms arranged side by side; Form planet row I by one of one of sun wheel, planetary wheel, internally toothed annulus; By sun wheel, planetary wheel two, internally toothed annulus two form planet row II, sun wheel is that two planets rows are shared; One of internally toothed annulus and the engagement of one of planetary wheel, one of planetary wheel meshes with sun wheel; Sun wheel also meshes with two of planetary wheel, two engagements of two and internally toothed annulus of planetary wheel; Two of internally toothed annulus is fixed, and one of internally toothed annulus is affixed with worm gear, the rotation of one of motor-driven internally toothed annulus.
For further realizing the object of the invention, described planet row I is connected with input shaft by one of pinion carrier, and input shaft is connected with bearing circle; Planet row II is connected output shaft connection deflector by two of pinion carrier with output shaft.Described planet row I is identical with the transmitting ratio of planet row II.Described sun wheel is floated, and perhaps sun wheel is to be supported on 2 two pinion carriers of one of pinion carrier and pinion carrier.
The present invention compares with prior art, has following advantage and beneficial effect:
(1) Power Drive Unit of the active steering transmission device of active steering system of vehicle of the present invention can be placed on any side, is convenient to arrange;
(2) active steering output is to drive internally toothed annulus by Power Drive Unit to export through pinion carrier, is deceleration transmission, so motor and worm-and-wheel gear drive torque are little, thus size that can reducing mechanism, cost-cutting, the space that reduces to occupy.
(3) bearing circle is a mechanical connection to deflector, safe, when motor driven systems breaks down (for example outage), Power Drive Unit pins (being equivalent to the motionless operating mode of motor) automatically, and this moment still can be as common deflector steering dish normal direction of rotation output.
Description of drawings
Fig. 1 is the wire-controlled steering system principle schematic.
Fig. 2 is the active steering system of vehicle principle schematic of Bayerische Motorne Werke Aktiengeellschaft.
Fig. 3 is the active steering transmission device principle schematic of active steering system of vehicle of the present invention.
Fig. 4 is the active steering transmission device structural representation of active steering system of vehicle of the present invention.
Fig. 5 be among Fig. 4 A-A to the sectional structure scheme drawing.
The specific embodiment
In order to understand technical characterstic of the present invention better, below in conjunction with accompanying drawing the present invention is further described, need to prove that the specific embodiment is not a limiting the scope of the invention.
Shown in Fig. 3,4,5, the active steering transmission device of active steering system of vehicle of the present invention has comprised a mechanical drive and a Power Drive Unit between bearing circle and deflector.Power Drive Unit is made up of motor 32, worm screw 22 and worm gear 28; Worm screw 22 drives with worm gear 28 engagements and by motor 32.Worm screw 22 is positioned at housing 33 with worm gear 28.One end of mechanical drive is connected with bearing circle by input shaft 21, and the other end is connected with steering box by output shaft 27.Worm gear 28 is fixed together with one of internally toothed annulus 23.Mechanical drive is made up of two groups of NGW type planetary gear mechanisms arranged side by side; Form planet row I by one of one of sun wheel 30, planetary wheel 24, internally toothed annulus 23; By sun wheel 30, planetary wheel 2 26, internally toothed annulus 2 25 form planet row II; Two planet rows' transmitting ratio is identical, and sun wheel 30 is that two planet rows are shared.The row of the planet here is meant the planet pinion group, and planet row I is connected with input shaft 21 by one of pinion carrier 29; Planet row II is connected with output shaft 27 by 2 31 of pinion carrier.One end of input shaft 21 is connected with bearing circle, and one of the other end and pinion carrier 29 is fixed together; 2 31 of one end of output shaft 27 and pinion carrier is fixed together, and the other end connects deflector.One of internally toothed annulus 23 and 24 engagements of one of planetary wheel, one of planetary wheel 24 and sun wheel 30 engagements; Sun wheel 30 also meshes with 2 26 of planetary wheel, 2 25 engagements of 2 26 and internally toothed annulus of planetary wheel.2 25 of internally toothed annulus is fixed, and one of internally toothed annulus 23 is fixed together with worm gear 28, and motor 32 can drive internally toothed annulus 23 rotations.
During as bearing circle rotation corner ω 1 and as if motor 32 motionless (one of internally toothed annulus 23 does not rotate), through one of one of input shaft 21, pinion carrier 29, planetary wheel 24, sun wheel 30, planetary wheel 2 26, pinion carrier 2 31 to output shaft 27, output corner is ω 1, transmitting ratio=1.When bearing circle motionless (being that input shaft 21 and pinion carrier 29 are motionless), motor 32 drive worm screw 22 rotations, then worm gear 28 and internally toothed annulus 23 are driven in rotation, through one of planetary wheel 24, sun wheel 30, planetary wheel 2 26, pinion carrier 2 31 to output shaft 27, output corner is ω 2.When if bearing circle and motor 32 rotate simultaneously, output corner is both stacks at this moment: ω 3=ω 1+ ω 2, transmitting ratio=ω 1/ ω 3.Therefore, active steering rotates by one of control motor-driven internally toothed annulus 23 and changes transmitting ratio or directly export deflection angle by motor-driven.
For designs simplification, active steering transmission device and deflector can be integrated in actual the enforcement; One of one of sun wheel, planetary wheel, internally toothed annulus, planetary wheel two, two gear of internally toothed annulus can adopt helical wheel so that reduce noise; Sun wheel can be floated, and also can be supported on 2 two pinion carriers of one of pinion carrier and pinion carrier; The transmitting ratio of two groups of NGW epicyclic gear transmissiones of active steering transmission device can be different, so that mate the requirement that meets best turning efficiency with deflector.
In the active steering transmission device of above-mentioned active steering system of vehicle, two groups of NGW type planetary gear mechanisms arranged side by side of mechanical drive are symmetrical structure, and therefore, input shaft 21 and output shaft 27 can exchange.Illustrate just no matter input shaft 21 is arranged on left end and still all can at right-hand member.
The present invention adopts mechanical connection, and safety is good, still can be as common deflector safe in operation after Power Drive Unit breaks down.Simultaneously, compare with the structure of Bayerische Motorne Werke Aktiengeellschaft, active steering output is to drive internally toothed annulus by Power Drive Unit to export through pinion carrier, is that deceleration transmission (is annotated: transmitting ratio=1+Z
a/ Z
b＞1, Z wherein
aBe the sun wheel number of teeth, Z
bBe the internally toothed annulus number of teeth), under the identical situation of output torque, needed motor is relative with the worm-and-wheel gear drive torque little, and the drive torque of motor and worm and gear can reduce 3～4 times.Because load reduces, thus size that can reducing mechanism, cost-cutting, the space that reduces in car, to occupy.
Claims (4)
1, a kind of active steering transmission device of active steering system of vehicle is installed between bearing circle and the deflector, has comprised a mechanical drive and a Power Drive Unit, and described Power Drive Unit is made up of motor, worm and worm wheel; Worm and wheel engagement and by motor-driven; It is characterized in that described mechanical drive is made up of two groups of NGW type planetary gear mechanisms arranged side by side; Form planet row I by one of one of sun wheel, planetary wheel, internally toothed annulus; By sun wheel, planetary wheel two, internally toothed annulus two form planet row II, sun wheel is that two planets rows are shared; One of internally toothed annulus and the engagement of one of planetary wheel, one of planetary wheel meshes with sun wheel; Sun wheel also meshes with two of planetary wheel, two engagements of two and internally toothed annulus of planetary wheel; Two of internally toothed annulus is fixed, and one of internally toothed annulus is affixed with worm gear, the rotation of one of motor-driven internally toothed annulus.
2, the active steering transmission device of active steering system of vehicle according to claim 1 is characterized in that described planet row I is connected with input shaft by one of pinion carrier, and input shaft is connected with bearing circle; Planet row II is connected output shaft connection deflector by two of pinion carrier with output shaft.
3, the active steering transmission device of active steering system of vehicle according to claim 1 is characterized in that described planet row I is identical with the transmitting ratio of planet row II.
4, the active steering transmission device of active steering system of vehicle according to claim 2 is characterized in that described sun wheel floats, and perhaps sun wheel is to be supported on 2 two pinion carriers of one of pinion carrier and pinion carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100267727A CN101244725B (en) | 2008-03-13 | 2008-03-13 | Active steering transmission device of active steering system of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100267727A CN101244725B (en) | 2008-03-13 | 2008-03-13 | Active steering transmission device of active steering system of vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101244725A true CN101244725A (en) | 2008-08-20 |
| CN101244725B CN101244725B (en) | 2010-10-27 |
Family
ID=39945474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100267727A Expired - Fee Related CN101244725B (en) | 2008-03-13 | 2008-03-13 | Active steering transmission device of active steering system of vehicle |
Country Status (1)
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|---|---|
| CN (1) | CN101244725B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966855A (en) * | 2010-09-17 | 2011-02-09 | 杭州正强电子技术有限公司 | Angle signal-free electric power steering alignment compensation control device |
| CN102180194A (en) * | 2011-04-28 | 2011-09-14 | 南京航空航天大学 | Adaptive steering system of timely four-wheel drive electric wheel automobile and control method thereof |
| CN102862599A (en) * | 2012-09-07 | 2013-01-09 | 河南科技大学 | Electric power-assisted steering system |
| CN103085863A (en) * | 2013-01-18 | 2013-05-08 | 河南科技大学 | Active steering system combined with electric power steering |
| CN103419842A (en) * | 2012-05-21 | 2013-12-04 | 武汉欧塔科汽车设计研究院有限公司 | Front axle and rear axle steering system utilizing numerical control speed changer to conduct mechanical transmission for a rear axle |
| CN104627234A (en) * | 2015-02-11 | 2015-05-20 | 重庆大学 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
| CN105387265A (en) * | 2015-12-07 | 2016-03-09 | 中国船舶重工集团公司第七一九研究所 | Planetary gear transmission mechanism capable of achieving mutual noninterference driving |
| CN106347452A (en) * | 2016-11-10 | 2017-01-25 | 北京理工大学 | Hybrid type front wheel active steering system |
| CN106515843A (en) * | 2016-11-10 | 2017-03-22 | 北京理工大学 | Mixed type steering-by-wire system |
| CN106741134A (en) * | 2016-12-05 | 2017-05-31 | 徐州重型机械有限公司 | For the active front steering system and hoisting machinery of hoisting machinery |
| CN110497957A (en) * | 2018-05-17 | 2019-11-26 | 莫天德 | Transfer |
| CN113525503A (en) * | 2018-07-23 | 2021-10-22 | 万重鸣 | Vehicle structure for building |
| CN115447665A (en) * | 2022-10-24 | 2022-12-09 | 吉林大学 | Safe and redundant electric automobile double-motor steering system and control method thereof |
-
2008
- 2008-03-13 CN CN2008100267727A patent/CN101244725B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966855A (en) * | 2010-09-17 | 2011-02-09 | 杭州正强电子技术有限公司 | Angle signal-free electric power steering alignment compensation control device |
| CN101966855B (en) * | 2010-09-17 | 2013-01-02 | 杭州正强电子技术有限公司 | Angle signal-free electric power steering alignment compensation control device |
| CN102180194A (en) * | 2011-04-28 | 2011-09-14 | 南京航空航天大学 | Adaptive steering system of timely four-wheel drive electric wheel automobile and control method thereof |
| CN102180194B (en) * | 2011-04-28 | 2012-10-24 | 南京航空航天大学 | Adaptive steering system of timely four-wheel drive electric wheel automobile and control method thereof |
| CN103419842A (en) * | 2012-05-21 | 2013-12-04 | 武汉欧塔科汽车设计研究院有限公司 | Front axle and rear axle steering system utilizing numerical control speed changer to conduct mechanical transmission for a rear axle |
| CN102862599A (en) * | 2012-09-07 | 2013-01-09 | 河南科技大学 | Electric power-assisted steering system |
| CN102862599B (en) * | 2012-09-07 | 2015-04-15 | 河南科技大学 | Electric power-assisted steering system |
| CN103085863A (en) * | 2013-01-18 | 2013-05-08 | 河南科技大学 | Active steering system combined with electric power steering |
| CN103085863B (en) * | 2013-01-18 | 2016-02-17 | 河南科技大学 | The active front steering system of combined with electrical power-assisted steering |
| CN104627234A (en) * | 2015-02-11 | 2015-05-20 | 重庆大学 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
| CN105387265A (en) * | 2015-12-07 | 2016-03-09 | 中国船舶重工集团公司第七一九研究所 | Planetary gear transmission mechanism capable of achieving mutual noninterference driving |
| CN106347452A (en) * | 2016-11-10 | 2017-01-25 | 北京理工大学 | Hybrid type front wheel active steering system |
| CN106515843A (en) * | 2016-11-10 | 2017-03-22 | 北京理工大学 | Mixed type steering-by-wire system |
| CN106515843B (en) * | 2016-11-10 | 2018-12-04 | 北京理工大学 | A kind of mixed type wire-controlled steering system |
| CN106741134A (en) * | 2016-12-05 | 2017-05-31 | 徐州重型机械有限公司 | For the active front steering system and hoisting machinery of hoisting machinery |
| CN106741134B (en) * | 2016-12-05 | 2019-10-25 | 徐州重型机械有限公司 | Active front steering system and hoisting machinery for hoisting machinery |
| CN110497957A (en) * | 2018-05-17 | 2019-11-26 | 莫天德 | Transfer |
| CN113525503A (en) * | 2018-07-23 | 2021-10-22 | 万重鸣 | Vehicle structure for building |
| CN115447665A (en) * | 2022-10-24 | 2022-12-09 | 吉林大学 | Safe and redundant electric automobile double-motor steering system and control method thereof |
| CN115447665B (en) * | 2022-10-24 | 2023-11-28 | 吉林大学 | Safe and redundant electric automobile dual-motor steering system and control method thereof |
Also Published As
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|---|---|
| CN101244725B (en) | 2010-10-27 |
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Granted publication date: 20101027 Termination date: 20130313 |