CN105823412A - Noncontact steering angle sensor - Google Patents
Noncontact steering angle sensor Download PDFInfo
- Publication number
- CN105823412A CN105823412A CN201610136384.9A CN201610136384A CN105823412A CN 105823412 A CN105823412 A CN 105823412A CN 201610136384 A CN201610136384 A CN 201610136384A CN 105823412 A CN105823412 A CN 105823412A
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- gear
- magnet
- prototype
- wheel shaft
- magnetic induction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a noncontact steering angle sensor comprising a shell, and a sun wheel shaft, a fixed internal tooth ring, a planet wheel set, a driving wheel set, a measuring gear, a magnet and a magnetic induction element which are arranged in the shell. The noncontact steering angle sensor is high in integration and small in radial dimension. The sensor is enabled to directly output a steering angle position measurement signal through detection of the steering angle of the measuring gear and simple conversion of driving ratio, the driving ratio of the steering angle of the sun wheel shaft to the steering angle of the measuring gear is high, and the range of the detectable steering angle is large.
Description
Technical field
The present invention relates to sensor technical field, specifically, relate to the noncontacting proximity sensor of steering angle position.
Background technology
The aspects such as the comfortableness that the performance of automobile steering system is driven for guaranteeing the safe driving of vehicle, control stability and improvement play an important role.
Electric boosting steering system, electronic stabilizing control system at automobile, adaptive forward lighting systems, automated driving system, in the systems such as navigation and auxiliary parking system, need to detect the angle position turning to axostylus axostyle in steering, the controller of sorts of systems calculate according to the feedback signal that angle position sensor exports and export needed for control signal, actuator press controller output control signal implement control task.
Generally angle position sensor classification is become contact and contactless.But, produce noise and the poor problem of durability, so it is presently preferred to contactless angle position sensor owing to contact angle position sensor has.
Turn to hard-over bigger due to automobile steering system steering wheel, typically between ± 540o to 1080o, so the rotary angle transmitter of the steering of prior art typically uses the structure of the driven gear to engage two different numbers of teeth respectively from the driving gear that steering column connects.The output signal of angle position sensor is mainly by the steering angle position of the phase difference calculating steering wheel of the rotation period signal (sinusoidal wave or sawtooth waveforms) of two driven gears with the different number of teeth.This angle position sensor result in the computing formula of more complicated angle position, and the structure of the most this angle position sensor result in the complexity installed and demarcate.
Summary of the invention
The problems such as the computing formula that the present invention is directed to existing rotary angle transmitter angle position is complicated, the complexity installed and demarcate, it is proposed that a kind of new noncontacting proximity sensor.
The contactless rotary angle transmitter of the present invention, the sun wheel shaft including shell and being positioned at shell, fixing internal gear, planetary gear set, driving wheel group, prototype gear, magnet and magnetic induction part element.
Planetary gear set is structure as a whole, and is arranged in the mounting seat that sun wheel shaft is arranged, and planetary gear set is made up of first planet gear and the second planetary gear, and first planet gear and the second planetary gear are coaxial.
Driving wheel group is structure as a whole, and is sleeved in sun wheel shaft, and driving wheel group is made up of transmission internal gear and travelling gear, and driving wheel group is coaxial with sun gear.
Fixing internal gear is fixed on shell or is structure as a whole with shell, and fixing internal gear is coaxial with sun wheel shaft.
The wheel shaft of prototype gear is arranged on housing.
Magnet is arranged on prototype gear, and magnetic induction part is corresponding with magnet, and is installed on housing.
First planet gear and the second planetary gear engage with fixing internal gear and transmission internal gear respectively.
Travelling gear engages with prototype gear.
Preferably, described fixing internal gear and the second planetary number of teeth sum are equal to transmission internal gear and the number of teeth sum of first planet gear.
Preferably, described magnet is positioned on prototype gear axial surface, and magnetic induction part is positioned at above magnet, and is provided with gap between magnet.
Preferably, described prototype gear being provided with magnetic shielding cover, described magnet is positioned at magnetic shielding cover.
The invention has the beneficial effects as follows: contactless rotary angle transmitter conformability is strong, radial dimension is less, corner and simple gear ratio by detection prototype gear convert, sensor direct output corner position measurement signal can be made, the corner of sun wheel shaft and the corner of prototype gear have bigger gear ratio, and detectable angle range is bigger.
Internal gear is equal with planetary number of teeth sum, and while making two planetary gears and two internal gears ensure coaxially, the radial dimension also making internal gear is less, reduces the volume of sensor.Magnet is positioned on prototype gear axial surface, can be along with prototype gear synchronizes and rotates exactly, gap between magnet, magnetic induction part, magnet and magnetic induction part forms the magnetic circuit of Guan Bi, magnetic induction part is enable accurately to detect the angle that magnet rotates, without calculating angle value, reduce the complexity that sensor is installed and demarcated.The magnetic shielding cover installed makes magnet, magnetic induction part and magnetic shielding cover form the magnetic circuit of Guan Bi, further increases the capacity of resisting disturbance of sensor, sensitivity and certainty of measurement.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation one of this contactless rotary angle transmitter；
Accompanying drawing 2 is the structural representation two of this contactless rotary angle transmitter；
Accompanying drawing 3 is the structural representation three of this contactless rotary angle transmitter；
Accompanying drawing 4 is the structural representation four of this contactless rotary angle transmitter；
Accompanying drawing 5 is the structural representation five of this contactless rotary angle transmitter；
Accompanying drawing 6 is the structural representation six of this contactless rotary angle transmitter；
In figure: sun wheel shaft-1, the second planetary gear-2, first planet gear-3, fixing internal gear-4, transmission internal gear-5, travelling gear-6, prototype gear-7, magnet-8, magnetic induction part-9, magnetic shielding cover-10.
Detailed description of the invention
In order to be able to further appreciate that the structure of the present invention, feature and other purpose, describing in detail as follows in conjunction with appended preferred embodiment, illustrated preferred embodiment is merely to illustrate technical scheme, and the non-limiting present invention.
The detailed description of the invention of the present invention is as follows:
As shown in Figures 1 to 6, this contactless rotary angle transmitter includes the shell of nonmagnetic substance, the parts installed in shell include: the sun wheel shaft 1 of (1) nonmagnetic substance, it is connected with steering spindle, the planetary gear set of one group of nonmagnetic substance is at least installed on it, planetary gear set is structure as a whole, and it includes first planet gear 3 and the second planetary gear 2；(2) the fixing internal gear 4 of nonmagnetic substance, it is coaxial with sun wheel shaft 1, is fixed on shell or is structure as a whole with shell；(3) driving wheel group of nonmagnetic substance, driving wheel group is structure as a whole, and it is co-axially mounted with sun wheel shaft 1, including transmission internal gear 5 and travelling gear 6；(4) measuring assembly, including prototype gear 7, magnet 8 and the magnetic induction part 9 of nonmagnetic substance, magnet 8 is arranged on prototype gear 7, and magnetic induction part 9, by measuring magnet 8, generates and the corner output signal corresponding to prototype gear 7 position of rotation.Sun wheel shaft 1 revolves round the sun with sun wheel shaft 1 along with steering axes, the planetary gear set in sun wheel shaft 1.First planet gear 3 engages with fixed fixing internal gear 4, makes the first planet gear 3 of planetary gear set and the second planetary gear 2 produce the rotation reverse with revolution.Second planetary gear 2 of rotation is as driving gear, by the transmission internal gear 5 engaged, drives the transmission internal gear 5 of driving wheel group and travelling gear 6 to rotate.The travelling gear 6 rotated, as driving gear, drives the prototype gear 7 engaged to rotate.Magnet 8 rotates along with prototype gear 7, is detected the rotational angle of magnet 8 by magnetic induction part 9, records prototype gear 7 position of rotation, thus draws the corner of steering spindle.
The corner of corner with prototype gear for ensureing sun wheel shaft has bigger gear ratio, in planetary gear set, first planet gear 3 is different with the number of teeth of the second planetary gear 2, fixing internal gear-4 is different with the number of teeth of transmission internal gear-5, by first planet gear the 3, second planetary gear 2, fixing internal gear 4, transmission internal gear 5, travelling gear 6 and the coupling of prototype gear 7 number of teeth, make sun wheel shaft 1 rotate ± 720 degree to ± 1080 degree time, corresponding prototype gear 7 rotates ± 180 degree within.
Embodiment two:
Embodiment two is essentially identical with the structure of embodiment one composition, and difference is:
Fixing internal gear and the second planetary number of teeth sum are equal to transmission internal gear and the number of teeth sum of first planet gear.Making two planetary gears and two internal gears ensure coaxial, the radial dimension the most also making internal gear is less, reduces the volume of sensor.
Embodiment three:
Embodiment three is essentially identical with the structure of embodiment one composition, and difference is:
Prototype gear 7 axial surface at least installs a magnet 8, at least installs a magnetic induction part 9 above magnet 8, and magnetic induction part 9 is fixed in the shell of sensor, leaves certain gap between magnet 8 and magnetic induction part 9.
Through the magnetic line of force of magnetic induction part 9 from the N level of magnet 8, gap between the N level and magnetic induction part 9 of magnet 8, after magnetic induction part 9, gap between the S level of magnetic induction part 9 and magnet 8 arrives the S level of magnet 8, the S level of last magnet 8 gap between the S level and N level of magnet 8 arrives the N level of magnet 8, constitutes the magnetic circuit of a Guan Bi.
As shown in Figure 4, when steering spindle corner is mechanical zero, the relative angular displacement of magnet 8 angle position correspondence magnetic induction part 9, if the magnetic line of force that the angle position of magnet 8 produces is parallel with the x-axis direction of the measurement plane of magnetic induction part 9.
As shown in Figure 5, steering spindle corner is that left-hand rotation α is when spending, the relative angular displacement β of magnet 8 angle position correspondence magnetic induction part 9, if the tooth of sun wheel shaft 1 and prototype gear 7 ratio is for n, the magnetic line of force that magnet 8 produces at angle position is β=α/n with the angle in the x-axis direction of the measurement plane of magnetic induction part 9.
As shown in Figure 6, steering spindle corner is that right-hand rotation α is when spending, the relative angular displacement β of magnet 8 angle position correspondence magnetic induction part 9, if the tooth of sun wheel shaft 1 and prototype gear 7 ratio is for n, the magnetic line of force that magnet 8 produces at angle position is β=-α/n with the angle in the x-axis direction of the measurement plane of magnetic induction part 9.
By above-mentioned reduction formula, the magnetic line of force that magnetic induction part 9 is produced at angle position by detection magnet 8 and the angle in the x-axis direction of the measurement plane of magnetic induction part 9, the corner of steering spindle can be drawn, produce corresponding corner output signal and send.
Such as when the tooth ratio of sun wheel shaft 1 and prototype gear 7 is for n=6, then as it is shown in figure 5, steering column turns left, 540 degree respective magnet 8 produce at angle position the magnetic line of force and the angle in the x-axis direction of the measurement plane of magnetic induction part 9 are β=90 degree；As shown in Figure 6, the turn right angle in x-axis direction of measurement plane of the magnetic line of force that 540 degree respective magnet 8 produce at angle position and magnetic induction part 9 of steering column is that β=-90 are spent.
Embodiment four:
Embodiment four is essentially identical with the structure of embodiment one composition, and difference is:
Being provided with magnetic shielding cover 10 on prototype gear 7, magnet 8 is positioned at magnetic shielding cover 10.Through the magnetic line of force of magnetic induction part 9 from the N level of magnet 8, gap between the N level and magnetic induction part 9 of magnet 8, after magnetic induction part 9, gap between the S level of magnetic induction part 9 and magnet 8 arrives the S level of magnet 8, the S level of last magnet 8 arrives the N level of magnet 8 through magnetic shielding cover 10, constitutes the magnetic circuit of a Guan Bi.Reduce magnetic circuit path, improve sensitivity and the certainty of measurement of magnetic induction part detection.
Claims (4)
1. a contactless rotary angle transmitter, it is characterised in that include shell and be positioned at the sun wheel shaft of shell, fixing internal gear, planetary gear set, driving wheel group, prototype gear, magnet and magnetic induction part,
Planetary gear set is structure as a whole, and is arranged in the mounting seat that sun wheel shaft is arranged, and planetary gear set is made up of first planet gear and the second planetary gear, and first planet gear is coaxial with the second planetary gear；
Driving wheel group is structure as a whole, and is sleeved in sun wheel shaft, and driving wheel group is made up of transmission internal gear and travelling gear, and driving wheel group is coaxial with sun gear；
Fixing internal gear is fixed on shell or is structure as a whole with shell, and fixing internal gear is coaxial with sun wheel shaft；
The wheel shaft of prototype gear is arranged on housing；
Magnet is arranged on prototype gear, and magnetic induction part is corresponding with magnet, and is installed on housing；
First planet gear and the second planetary gear engage with fixing internal gear and transmission internal gear respectively；
Travelling gear engages with prototype gear.
Contactless rotary angle transmitter the most according to claim 1, it is characterised in that described fixing internal gear and the second planet tooth
The number of teeth sum of wheel is equal to the number of teeth sum of transmission internal gear with first planet gear.
Contactless rotary angle transmitter the most according to claim 1, it is characterised in that described magnet is positioned at the axial table of prototype gear
On face, magnetic induction part is positioned at above magnet, and is provided with gap between magnet.
Contactless rotary angle transmitter the most according to claim 1, it is characterised in that be provided with magnetic shield on described prototype gear
Cover, described magnet is positioned at magnetic shielding cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136384.9A CN105823412B (en) | 2016-03-10 | 2016-03-10 | Contactless rotary angle transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136384.9A CN105823412B (en) | 2016-03-10 | 2016-03-10 | Contactless rotary angle transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105823412A true CN105823412A (en) | 2016-08-03 |
| CN105823412B CN105823412B (en) | 2018-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610136384.9A Active CN105823412B (en) | 2016-03-10 | 2016-03-10 | Contactless rotary angle transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105823412B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018098783A1 (en) * | 2016-12-01 | 2018-06-07 | 深圳市兆威机电有限公司 | Angle sensor having small return-stroke difference and planetary gear thereof |
| CN110132577A (en) * | 2019-05-29 | 2019-08-16 | 河北科技大学 | Gearbox drive performance detecting system and gearbox drive method for testing performance |
| CN111003431A (en) * | 2019-11-13 | 2020-04-14 | 安徽驿星智能物流装备制造有限公司 | Storage rack shuttle car positioner |
Citations (7)
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| US20020111763A1 (en) * | 2001-01-18 | 2002-08-15 | Osamu Koga | Rotational angle measuring apparatus |
| CN1963388A (en) * | 2005-11-07 | 2007-05-16 | 株式会社东海理化电机制作所 | Rotational angle detector |
| CN101416037A (en) * | 2006-04-10 | 2009-04-22 | 松下电器产业株式会社 | Rotation angle detector |
| JP2009145076A (en) * | 2007-12-11 | 2009-07-02 | Hitachi Cable Ltd | Rotation angle detector |
| CN101608898A (en) * | 2009-07-14 | 2009-12-23 | 武汉理工大学 | Steering system planetary gear absolute angle output corner sensor |
| CN201837365U (en) * | 2010-09-26 | 2011-05-18 | 昌辉汽车电气系统（安徽）有限公司 | Automobile steering wheel rotation angle sensor |
| CN102889852A (en) * | 2011-07-21 | 2013-01-23 | 波恩斯公司 | Rotation angle and torque sensor |
-
2016
- 2016-03-10 CN CN201610136384.9A patent/CN105823412B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020111763A1 (en) * | 2001-01-18 | 2002-08-15 | Osamu Koga | Rotational angle measuring apparatus |
| CN1963388A (en) * | 2005-11-07 | 2007-05-16 | 株式会社东海理化电机制作所 | Rotational angle detector |
| CN101416037A (en) * | 2006-04-10 | 2009-04-22 | 松下电器产业株式会社 | Rotation angle detector |
| JP2009145076A (en) * | 2007-12-11 | 2009-07-02 | Hitachi Cable Ltd | Rotation angle detector |
| CN101608898A (en) * | 2009-07-14 | 2009-12-23 | 武汉理工大学 | Steering system planetary gear absolute angle output corner sensor |
| CN201837365U (en) * | 2010-09-26 | 2011-05-18 | 昌辉汽车电气系统（安徽）有限公司 | Automobile steering wheel rotation angle sensor |
| CN102889852A (en) * | 2011-07-21 | 2013-01-23 | 波恩斯公司 | Rotation angle and torque sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018098783A1 (en) * | 2016-12-01 | 2018-06-07 | 深圳市兆威机电有限公司 | Angle sensor having small return-stroke difference and planetary gear thereof |
| CN110132577A (en) * | 2019-05-29 | 2019-08-16 | 河北科技大学 | Gearbox drive performance detecting system and gearbox drive method for testing performance |
| CN110132577B (en) * | 2019-05-29 | 2020-11-06 | 河北科技大学 | Gearbox transmission performance detection system and gearbox transmission performance detection method |
| CN111003431A (en) * | 2019-11-13 | 2020-04-14 | 安徽驿星智能物流装备制造有限公司 | Storage rack shuttle car positioner |
| CN111003431B (en) * | 2019-11-13 | 2021-06-18 | 安徽驿星智能物流装备制造有限公司 | Storage rack shuttle car positioner |
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| Publication number | Publication date |
|---|---|
| CN105823412B (en) | 2018-10-26 |
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| CB03 | Change of inventor or designer information |
Inventor after: Tang Gongyou Inventor after: Wei Zengxiang Inventor before: Tang Gongyou |
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| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266000 No. 995 Huantaibei Road, Wangtai Town, Huangdao District, Qingdao City, Shandong Province Patentee after: Qingdao Hengnuo Automotive Electronics Technology Co., Ltd. Address before: 266000 No. 995 Huantaibei Road, Wangtai Town, Huangdao District, Qingdao City, Shandong Province Patentee before: Qingdao Sun-song Hi-tech Auto Electronics Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |