CN204279608U - Dual-motor electric servo steering system - Google Patents
Dual-motor electric servo steering system Download PDFInfo
- Publication number
- CN204279608U CN204279608U CN201420773966.4U CN201420773966U CN204279608U CN 204279608 U CN204279608 U CN 204279608U CN 201420773966 U CN201420773966 U CN 201420773966U CN 204279608 U CN204279608 U CN 204279608U
- Authority
- CN
- China
- Prior art keywords
- assist motor
- motor
- torque
- torsion coupler
- steering shaft
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of dual-motor electric servo steering system, connect the first steering shaft below bearing circle, the first steering shaft connects the second steering shaft by universal-joint; Steering wheel torque rotary angle transmitter is arranged at below bearing circle, for torque, the angular signal of Real-time Collection bearing circle; First assist motor and the second assist motor, by the first torsion coupler parallel connection, are connected the first magnetic clutch between the second assist motor with the first torsion coupler; The mouth of torsion coupler is in parallel by the second torsion coupler with the second steering shaft; The mouth of the second torsion coupler connects deflector by the 3rd steering shaft.The utility model is by arranging two assist motors be connected by torsion coupler, according to the size of required power torque, control single assist motor or two assist motors Driving Torque simultaneously, meet the demand that commercial affairs visitor waits the larger torque of needs, and improve the fuel economy of commercial vehicle/comm..vehicle, reduce operating cost.
Description
[technical field]
The utility model relates to a kind of steering swivel system, particularly a kind of electric boosting steering system.
[background technology]
Existing electric boosting steering system safety, reliability is high, and cornering properties curve is more satisfactory.Meanwhile, owing to adopting DC machine, do not need driving engine to provide high pressure oil, car load fuel economy is good.But by automotive battery power supply voltage, the restriction of the aspects such as installation dimension, electric power steering Driving Torque is less, cannot meet the requirement of commercial vehicle power steering, and current application still sinks into manned vehicle or light commercial vehicle.Therefore, say from fuel economy, adopt the electric boosting steering system of large Driving Torque for the fuel economy improving commercial vehicle/comm..vehicle, reduce operating cost and there is positive effect.
[utility model content]
The purpose of this utility model is to provide a kind of dual-motor electric servo steering system, too small to solve electric power steering Driving Torque, cannot meet the problem applied on commercial vehicle/comm..vehicle.
To achieve these goals, the utility model adopts following technical scheme:
Dual-motor electric servo steering system, comprises bearing circle, the second steering shaft, the first torsion coupler, the second torsion coupler, deflector, the first steering shaft, the first assist motor and the second assist motor; Connect the first steering shaft below bearing circle, the first steering shaft connects the second steering shaft by universal-joint; First assist motor and the second assist motor, by the first torsion coupler parallel connection, are connected the first magnetic clutch between the second assist motor with the first torsion coupler; The mouth of torsion coupler is in parallel by the second torsion coupler with the second steering shaft; The mouth of the second torsion coupler connects deflector by the 3rd steering shaft.
Preferably, the steering wheel torque rotary angle transmitter of the torque for Real-time Collection bearing circle, angular signal is also provided with below bearing circle.
Preferably, the control end of the mouth of steering wheel torque rotary angle transmitter, the control end of the first assist motor, the control end of the second assist motor and the first magnetic clutch is connected with control module; Described control module, for controlling the Driving Torque of the first assist motor and the second assist motor and the opening and closing of the first magnetic clutch according to the speed of a motor vehicle, steering wheel torque, corner information.
Preferably, the mouth of the first torsion coupler is connected with retarder.
Preferably, retarder mouth connects overload protective device.
Preferably, the mouth of overload protective device connects one end of the second magnetic clutch; The other end of the second magnetic clutch is in parallel by the second torsion coupler with the second steering shaft.
Preferably, overload protective device comprises terminal pad post and lower terminal pad post; Have some to corresponding hole in upper terminal pad post and lower terminal pad post, and connected by rubber connecting pin.
In the utility model, control module controls the Driving Torque of the first assist motor and the second assist motor and the opening and closing of the first magnetic clutch according to the speed of a motor vehicle, steering wheel torque, corner information; When required power torque is less than the maximum torque that the first assist motor can export, control module controls the first magnetic clutch and opens, and the torque cutting off the second assist motor exports; When required power torque is greater than the maximum torque that the first assist motor can export, closed first magnetic clutch, the first assist motor and the second assist motor Driving Torque simultaneously.
Relative to prior art, the utility model has the following advantages: the utility model is by arranging two assist motors be connected by torsion coupler, according to the size of required power torque, control single assist motor or two assist motors Driving Torque simultaneously, meet the demand that commercial affairs visitor waits the larger torque of needs, adopt the electric boosting steering system of large Driving Torque for the fuel economy improving commercial vehicle/comm..vehicle, reduce operating cost and there is positive effect.The utility model plays the effect of slowing down and increasing and turning round by arranging retarder, improves assist motor Driving Torque further; The utility model is by arranging overload protective device, and when motor and control module fault, when there is auto-steering, because torque is excessive, rubber connecting pin will rupture, and cuts off transmission of torque, plays the effect of overload protection.
In the utility model, whether the first magnetic clutch is coupled with the Driving Torque of the first assist motor for the Driving Torque controlling the second assist motor; Second magnetic clutch plays a protective role, and when electrical fault, the second magnetic clutch is opened, and prevents vehicle auto-steering generation grave accident; Wherein, the first magnetic clutch is normally open, and the second magnetic clutch is normally off; The utility model comprises the duplicate protection of overload protective device and the second magnetic clutch, ensures to turn to reliability under electric power steering fault.
Simultaneously, the utility model provides the servo-steering method of this dual-motor electric servo steering system: the vehicle speed signal gathered by car speed sensor, average had a preference for steering torque, steering wheel angle and the speed of a motor vehicle change curve of China's chaufeur stored in the angular signal of steering wheel angle sensor collection and control module compares, and draws the steering torque that bearing circle should have; Then, the steering wheel torque measured with steering wheel torque sensor compares, and show that assist motor should Driving Torque; Then assist motor should be judged by Driving Torque, if Driving Torque is less than the maximum torque that the first assist motor can provide, disconnect the first magnetic clutch, the Driving Torque of the first assist motor is controlled by control module, if Driving Torque is greater than the maximum torque that the first assist motor can provide, closed first magnetic clutch, the second assist motor also Driving Torque, is controlled the Driving Torque of the first assist motor, the second assist motor by control module.
[accompanying drawing explanation]
Fig. 1 is the constructional drawing of the utility model dual-motor electric servo steering system;
Fig. 2 a is the constructional drawing of overload protective device; The cutaway view of terminal pad post and lower terminal pad post junction on Fig. 2 b;
Fig. 3 is the control policy figure of the utility model dual-motor electric servo steering system;
The steering torque lateral acceleration that Fig. 4 is China's chaufeur average institute preference and speed of a motor vehicle change curve.
[detailed description of the invention]
Refer to shown in Fig. 1, a kind of dual-motor electric servo steering system of the utility model, comprising: bearing circle 1, steering wheel torque rotary angle transmitter 2, second steering shaft 4, first torsion coupler 5-1, the second torsion coupler 5-2, deflector 6, first steering shaft 7, first assist motor 8 and the second assist motor 9.
Connect the first steering shaft 7, first steering shaft 7 below bearing circle 1 and connect the second steering shaft 4 by universal-joint; Steering wheel torque rotary angle transmitter 2 is arranged at below bearing circle 1, for torque, the angular signal of Real-time Collection bearing circle 1; First assist motor 8 and the second assist motor 9, by the first torsion coupler 5-1 parallel connection, are connected the first magnetic clutch 10-1 between the second assist motor 9 with the first torsion coupler 5-1; The input end of the mouth connection reducer 11 of torsion coupler 5-1, for reducing motor output speeds, increases Driving Torque; Retarder 11 mouth connects overload protective device 12.The mouth of steering wheel torque rotary angle transmitter 2, the control end of the first assist motor 8, the control end of the second assist motor 9 and the control end link control module 3 of the first magnetic clutch 10-1.
As shown in Figure 2 a and 2 b, overload protective device 12 comprises terminal pad post 13 and lower terminal pad post 15 to the structure of overload protective device 12; Four corresponding holes are had in upper terminal pad post 13 and lower terminal pad post 15; connected by rubber connecting pin 14, when electric boosting steering system fault, when conference is crossed in torque, rubber connecting pin 14 ruptures; electric power steering was lost efficacy, plays the effect of overload protection.The mouth of upper terminal pad post 13 connection reducer 11, lower terminal pad post 15 connects one end of the second magnetic clutch 10-2.The other end of the second magnetic clutch 10-2 is in parallel by the second torsion coupler 5-2 with the second steering shaft 4.The control end link control module 3 of the second magnetic clutch 10-2.
When assist motor fault, controlled by control module 3, disconnect the second magnetic clutch 10-2, prevent the generation of auto-steering; Second magnetic clutch 10-2 Driving Torque second torsion coupler 5-2 is connected with the 3rd steering shaft 16, the torque that turns to after synthesis is outputted to deflector 6, thus realizes servo-steering process.
Control module 3 is according to vehicle speed signal, steering wheel torque, angular signal, the steering torque stored in compared with control module 3, steering wheel angle and speed of a motor vehicle change curve (utilize opening driving simulator to draw steering torque lateral acceleration and the speed of a motor vehicle change curve of China's chaufeur average institute preference, as Fig. 4 for National Key Laboratory of Jilin University; The assist characteristic curve that this curve is disclosed in electric hydraulic power-assisted steering system relates to emulation one literary composition, Chongqing Jiaotong University's journal, volume the 4th phase August the 30th in 2011; Certainly also can do-it-yourself experiment draw the steering torque curve of the steering wheel angle under the different speed of a motor vehicle and drivers preference) unlatching that controls assist motor torque and the first magnetic clutch 10-1 with close; The steering torque stored, steering wheel angle and speed of a motor vehicle change curve, according to steering torque, steering wheel angle and the speed of a motor vehicle change curve on average had a preference for for statistics China chaufeur, are prior art.
Refer to shown in Fig. 3, when a kind of dual-motor electric servo steering system of the utility model works, comprise the following steps:
The vehicle speed signal that car speed sensor gathers, the angular signal that steering wheel torque rotary angle transmitter 2 gathers exports control module 3 to, and compare with the steering torque, steering wheel angle and the speed of a motor vehicle change curve that store in control module 3, draw the steering torque that bearing circle should have; Then, the steering wheel torque that the steering torque that should have calculated and steering wheel torque rotary angle transmitter 2 are measured compares by control module 3, draws the torque that assist motor should export; Then assist motor should be judged by Driving Torque, if the torque that assist motor should export is less than the maximum torque that assist motor 8 can provide, disconnect the first magnetic clutch 10-1, second assist motor 9 does not work, and the Driving Torque being controlled the first assist motor 8 by control module 3 completes power steering; If Driving Torque is greater than the maximum torque that the first assist motor 8 can provide, closed first magnetic clutch 10-1 makes the second assist motor 9 also Driving Torque, controls the first assist motor 8 and the common Driving Torque of the second assist motor 9 completes power steering by control module 3.
Same, a kind of dual-motor electric servo steering system of the utility model also can not arrange control module 3 and sensor, the torque of chaufeur manually push button control first assist motor 8 and the second assist motor 9, and the folding controlling the first magnetic clutch 10-1 exports the torque of the 3rd steering shaft 16 to control, carry out power steering.
Claims (7)
1. dual-motor electric servo steering system, it is characterized in that, comprise bearing circle (1), the second steering shaft (4), the first torsion coupler (5-1), the second torsion coupler (5-2), deflector (6), the first steering shaft (7), the first assist motor (8) and the second assist motor (9); Bearing circle (1) below connects the first steering shaft (7), and the first steering shaft (7) connects the second steering shaft (4) by universal-joint; First assist motor (8) and the second assist motor (9), by the first torsion coupler (5-1) parallel connection, are connected the first magnetic clutch (10-1) between the second assist motor (9) with the first torsion coupler (5-1); The mouth of torsion coupler (5-1) is in parallel by the second torsion coupler (5-2) with the second steering shaft (4); The mouth of the second torsion coupler (5-2) connects deflector (6) by the 3rd steering shaft (16).
2. dual-motor electric servo steering system according to claim 1, it is characterized in that, below bearing circle (1), be also provided with the steering wheel torque rotary angle transmitter (2) of the torque for Real-time Collection bearing circle (1), angular signal.
3. dual-motor electric servo steering system according to claim 2, it is characterized in that, the mouth of steering wheel torque rotary angle transmitter (2), the control end of the first assist motor (8), the control end of the second assist motor (9) and the control end of the first magnetic clutch (10-1) are connected with control module (3); Described control module (3), for controlling the Driving Torque of the first assist motor (8) and the second assist motor (9) and the opening and closing of the first magnetic clutch (10-1) according to the speed of a motor vehicle, steering wheel torque, corner information.
4. dual-motor electric servo steering system according to claim 1, is characterized in that, the mouth of the first torsion coupler (5-1) is connected with retarder (11).
5. dual-motor electric servo steering system according to claim 4, is characterized in that, retarder (11) mouth connects overload protective device (12).
6. dual-motor electric servo steering system according to claim 5, is characterized in that, the mouth of overload protective device (12) connects one end of the second magnetic clutch (10-2); The other end of the second magnetic clutch (10-2) is in parallel by the second torsion coupler (5-2) with the second steering shaft (4).
7. dual-motor electric servo steering system according to claim 5, is characterized in that, overload protective device (12) comprises terminal pad post (13) and lower terminal pad post (15); Have some to corresponding hole in upper terminal pad post (13) and lower terminal pad post (15), and connected by rubber connecting pin (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773966.4U CN204279608U (en) | 2014-12-09 | 2014-12-09 | Dual-motor electric servo steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773966.4U CN204279608U (en) | 2014-12-09 | 2014-12-09 | Dual-motor electric servo steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204279608U true CN204279608U (en) | 2015-04-22 |
Family
ID=52862795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420773966.4U Expired - Fee Related CN204279608U (en) | 2014-12-09 | 2014-12-09 | Dual-motor electric servo steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204279608U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204451A (en) * | 2018-09-11 | 2019-01-15 | 长安大学 | A kind of dual-motor electric servo steering system and its power-assisted steering method |
| TWI694940B (en) * | 2019-08-30 | 2020-06-01 | 上銀科技股份有限公司 | Electric power steering system |
-
2014
- 2014-12-09 CN CN201420773966.4U patent/CN204279608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204451A (en) * | 2018-09-11 | 2019-01-15 | 长安大学 | A kind of dual-motor electric servo steering system and its power-assisted steering method |
| TWI694940B (en) * | 2019-08-30 | 2020-06-01 | 上銀科技股份有限公司 | Electric power steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20161209 |