CN101898583A - Active electric power steering system capable of changing steering system transmission ratio - Google Patents
Active electric power steering system capable of changing steering system transmission ratio Download PDFInfo
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- CN101898583A CN101898583A CN 201010221835 CN201010221835A CN101898583A CN 101898583 A CN101898583 A CN 101898583A CN 201010221835 CN201010221835 CN 201010221835 CN 201010221835 A CN201010221835 A CN 201010221835A CN 101898583 A CN101898583 A CN 101898583A
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- toric transmission
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Abstract
The invention discloses an active electric power steering system capable of changing a steering system transmission ratio, which comprises a steering wheel, a steering column, a steering angle sensor, a torque sensor, a worm gear speed reducer, an assisted motor, a gear rack steering gear, an infinitely variable transmission, a steering angle speed ratio adjustment motor which drives the infinitely variable transmission, a wheel speed sensor, a gyroscope and a steering system controller. The gear ratio control adjustment motor realizes the continuous and smoothly infinite variation of steering transmission ratios at different vehicle speeds, and also can perform steering angle compensation; and in the steering transition of a vehicle, negative steering adjustment is actively performed, and in the steering process, the adjustment motor and the assisted motor perform flexible control and compensate for each other, thereby perfectly combining steering flexibility, convenience and operation stability and improving maneuvering performance and security performance.
Description
Technical field
The present invention relates to steering hardware, relate in particular to a kind of active electric boosting steering system of steering system variable ratio.
Background technology
Existing electric boosting steering system grows up at original traditional mechanical steering swivel system, the angular gear ratio of mechanical steering system is changeless, electric power steering can not change the angular gear ratio of steering system at present, and can only alleviate the torque that turns to, and can not reduce steering travel (steering angle) at low speed, when park in the original place, alleviate the labour intensity of chaufeur, when high speed, can not satisfy the requirement that turns to steady (insensitivity) again.
In other words, no matter be to run quickly on jogging of narrow street, urban district or express highway, bearing circle is more unalterable than all the time with the steering angle of front-wheel.Directly turn to if adopt, the driver does not just need significantly steering wheel rotation when crossing the sharp turn, but when running at high speed, the action that bearing circle is trickle all will have influence on riding stability; Steering swivel system is indirect conversely speaking,, and the riding stability of vehicle on express highway is just high more, but must sacrifice handling when bending.So traditional steering swivel system all must be made balance between safety and traveling comfort.
Summary of the invention
Technical matters solved by the invention is to provide a kind of active electric boosting steering system of steering system variable ratio, to solve the shortcoming in the above-mentioned background technology.
Technical matters solved by the invention realizes by the following technical solutions:
The active electric boosting steering system of steering system variable ratio, comprise: steering handwheel, steering column, rotary angle transmitter, torsion sensor, worm-gear speed reducer, assist motor, rack and pinion steering gear, the adjusting motor of toric transmission and driving toric transmission converter speed ratio, wheel speed sensors, gyroscope, steering swivel system controller.
The active electric boosting steering system of steering system variable ratio, an electronically controlled mechanical stepless transmission is housed between steering handwheel and lower drive shaft, toric transmission wherein has an input shaft, an output shaft and a speed ratio adjusting shaft, an input shaft is connected to steering handwheel, the speed ratio adjusting shaft links to each other with motor output shaft, by converter speed ratio module controls in the controller, output shaft then links to each other with Steering gear.Finally the whole steering angle that spreads out of from output shaft is that steering handwheel angle by driver's input is by the angle after the toric transmission speed change.
In addition, other constituent elementss of the active electric boosting steering system of steering system variable ratio also comprise stable control unit and a plurality of sensor of judging current riving condition and driver's instruction.In addition, the active electric boosting steering system of steering system variable ratio is all the time by In-vehicle networking and the networking of dynamic stability control unit.
The present invention can initiatively carry out the counter steer adjustment when Vehicular turn is excessive.Make it and the automobile electron stabilization control system combined action, can carry out vehicle control automatically, guarantee its stability.
The present invention can adjust vehicle by assisted electric, replaces chaufeur to implement counter steer, under the situation of multiple road surface coexistence, can both guarantee the vehicle straight-line travelling, can guarantee stability, and apply bigger braking force to vehicle when switching between different road conditions, stopping distance more shortens.
The active electric boosting steering system of steering system variable ratio can be judged the situation that turns to the back to occur at the very start from turning to, automatically revise steering angle by electronically controlled toric transmission, intervene the generation that reduces the driftage situation, when thereby unexpected modified line is got back to the track then to surmount another car when preventing to run at high speed on highway, when catching sight of the place ahead in perhaps running at high speed and having obstacle to need sharply turning, understeer that is easy to occur or ovdersteering have been avoided the out of control situation of car body possibility in this process.And can make automobile electron stabilization control system as in other vehicles, intervene driving, guarantee the stationarity of vehicle '.
In the time of can't finishing the control to vehicle after adjusting the steering system variable ratio, the steering system counter steer is adjusted, to guarantee the stability of automobile requirement.When the adjustment of steering system counter steer can't be finished control to vehicle, automobile electron stabilization control system just participated in work, in order to reduce the frequency that automobile electron stabilization control system uses, has improved the stationarity of vehicle '.
Three big functional modules are arranged: converter speed ratio control module, power operated control module, steering stability control module in control part.Wherein comprise power operated control in the power operated control module, return positive control, damping control, torque compensation control; The converter speed ratio module comprises the control of steering system converter speed ratio, corner compensate control; The steering stability control module comprises steering swivel system counter steer control, also comprises and some interfaces of vehicle body Stability Control (ABS, EBD, TCS, ASR etc.), communication etc.,
Beneficial effect:
The present invention is easy to use, and intelligent degree height can initiatively carry out the counter steer adjustment, even regulation force-summing element in steering procedure, compensation mutually, thus with the sensitieness, portability and the road-holding property perfect adaptation that turn to, improved safety performance when having improved maneuvering performance.
Description of drawings
Fig. 1 is the scheme drawing of preferred embodiment of the present invention;
Fig. 2 is a workflow scheme drawing of the present invention.
Wherein: steering handwheel 1, steering handwheel angle sensor 2, steering column 3, corner speed ratio are regulated motor 4, toric transmission 5, controller 6, torque sensor 7, wheel speed sensors 8, tire 9, rack and pinion steering gear 10, assist motor 11, worm-gear speed reducer 12, gyroscope 13, power-assisted module 14, steering system converter speed ratio module 15, vehicle body Stability Control module 16, angular signal 17, torque signals 18, wheel speed signal 19, gyroscope signal 20.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Active electric boosting steering system referring to Fig. 1 steering system variable ratio mainly comprises: steering handwheel 1, steering handwheel angle sensor 2, steering column 3, corner speed ratio are regulated motor 4, toric transmission 5, controller 6, torque sensor 7, wheel speed sensors 8, tire 9, rack and pinion steering gear 10, assist motor 11, worm-gear speed reducer 12, gyroscope 13.
In the present embodiment, steering handwheel 1 connects the corner speed ratio by steering column 3 and regulates motor 4 and toric transmission 5, one steering handwheel angle sensor 2 is arranged on steering column 3, these parts connect car body by a long rod structure, comprise torque sensor 7 on the car body, wheel speed sensors 8, tire 9, rack and pinion steering gear 10, assist motor 11, worm-gear speed reducer 12, gyroscope 13, wherein rack and pinion steering gear 10, assist motor 11, worm-gear speed reducer 12 connects steering hardware, wheel speed sensors 8 is near tire 9, gyroscope 13 is equipped with controller 6 at the body gravity place in the car body.
The working process of the active electric boosting steering system of steering system variable ratio in the present embodiment is: after automotive ignition starts, when rotating steering handwheel 1, angular signal 17, torque signals 18, wheel speed signal 19, gyroscope signal 20 and the current steering system ratio signal that is obtained by corner speed ratio adjusting motor 4 are transferred to controller 6.
Wherein angular signal 17, torque signals 18, wheel speed signal 19 pass to power-assisted module 14, thereby control assist motor 11 carries out power-assisted operation, thereby just return, damping controls.Wheel speed signal 19 and gyroscope signal 20 pass to steering system converter speed ratio module 15, regulate motor 4 according to the wheel speed signal 19 control corner speed ratios of automobile, are adjusted to suitable steering system ratio, to obtain best feel.
Secondly judge according to the gyroscope signal on the gyroscope 13 20 whether automobile has unstability trend, suitably regulate motor 4 and regulate steering system ratio by the corner speed ratio, make to turn to and under the situation that keeps vehicle steadily, obtain maximum transmitting ratio, compensate by 3 pairs of corners of steering column simultaneously, make turn to more flexible, accurate.After changing steering system ratio, torque signals 18 can change, and at this moment steering system converter speed ratio module 15 can be to 14 communications of power-assisted module, and 14 pairs of torques of request power-assisted module compensate.When angular signal 17 and gyroscope signal 20 pass to vehicle body Stability Control module 16, controller 6 is accepted the corner speed ratio and is regulated the current transmitting ratio of motor 4 affirmations, can judge the automobile theory track by wheel speed signal 19 and angular signal 17, can draw automobile actual travel track by gyroscope signal 20, theory locus is compared with actual path, if drawing answer equates, the expression automobile does not have unstability, if answer is unequal, expression automobile unstability, implement counter steer control to turning to, thereby make automobile adjust to stabilized conditions.
More than show and described groundwork of the present invention and principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. the active electric boosting steering system of steering system variable ratio, it is characterized in that, it comprises that mainly steering handwheel connects steering column, and rotary angle transmitter and torsion sensor are arranged on it, and the lower end connects worm-gear speed reducer and assist motor, rack and pinion steering gear, toric transmission, steering swivel system controller, the adjusting motor of toric transmission and driving toric transmission converter speed ratio, wheel speed sensors, gyroscope provide car body information on car body.Described toric transmission is that mechanical continuously-variable transmission is between steering handwheel and the lower drive shaft.
2. the active motor servo steering system of steering system variable ratio according to claim 1 is characterized in that described toric transmission is a mechanical continuously-variable transmission, and is between steering handwheel and the lower drive shaft.
3. the active electric boosting steering system of steering system variable ratio according to claim 1 is characterized in that, described toric transmission has an input shaft to be connected to steering handwheel, an output shaft Steering gear is connected motor output shaft with a speed ratio adjusting shaft.
4. the active electric boosting steering system of steering system variable ratio according to claim 1 is characterized in that, all the time by In-vehicle networking and the networking of dynamic stability control unit.
5. the active electric boosting steering system of steering system variable ratio according to claim 1 is characterized in that, revises steering angle automatically by electronically controlled toric transmission before the vehicle unstability.
6. the active electric boosting steering system of steering system variable ratio according to claim 1 is characterized in that, by the counter steer adjustment voluntarily after the vehicle unstability of electronically controlled toric transmission, in case of necessity, is assisted by electronic stabilizing control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010221835 CN101898583A (en) | 2010-07-09 | 2010-07-09 | Active electric power steering system capable of changing steering system transmission ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010221835 CN101898583A (en) | 2010-07-09 | 2010-07-09 | Active electric power steering system capable of changing steering system transmission ratio |
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| CN101898583A true CN101898583A (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010221835 Pending CN101898583A (en) | 2010-07-09 | 2010-07-09 | Active electric power steering system capable of changing steering system transmission ratio |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303641A (en) * | 2011-06-14 | 2012-01-04 | 西安交通大学 | Disc-type servomotor direct-driving device suitable for self-adaptable power-assisted steering of automobile |
| CN102975714A (en) * | 2012-11-19 | 2013-03-20 | 北京工业大学 | Electric vehicle chassis system and collaborative control method thereof |
| CN108556907A (en) * | 2018-04-10 | 2018-09-21 | 深圳市云图电装系统有限公司 | The control method of power steering, apparatus and system |
| CN113479257A (en) * | 2021-08-23 | 2021-10-08 | 浙江吉利控股集团有限公司 | Steering control system and vehicle |
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| CN1672973A (en) * | 2004-03-26 | 2005-09-28 | 丰田自动车株式会社 | Running stability control device for turn running along curved road |
| CN1704297A (en) * | 2004-05-28 | 2005-12-07 | 西南交通大学 | Pendulum train route situation detecting and reporting and train body incline controlling device |
| CN2753644Y (en) * | 2004-12-10 | 2006-01-25 | 比亚迪股份有限公司 | Automobile electric-controller steering operation device |
| CN2803861Y (en) * | 2005-05-11 | 2006-08-09 | 中国第一汽车集团公司 | Electric boosting steering system |
| CN201261490Y (en) * | 2008-06-23 | 2009-06-24 | 重庆工学院 | Variable steering transmitting ratio electric power-assisted steering system |
| CN101695935A (en) * | 2009-10-28 | 2010-04-21 | 南京航空航天大学 | Active steering system combined with electrical power-assisted steering function and control method thereof |
| CN101700786A (en) * | 2009-11-09 | 2010-05-05 | 南京航空航天大学 | Recirculating-ball electric power-assisted steering system with variable transmission ratio for bus and control method thereof |
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2010
- 2010-07-09 CN CN 201010221835 patent/CN101898583A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672973A (en) * | 2004-03-26 | 2005-09-28 | 丰田自动车株式会社 | Running stability control device for turn running along curved road |
| CN1704297A (en) * | 2004-05-28 | 2005-12-07 | 西南交通大学 | Pendulum train route situation detecting and reporting and train body incline controlling device |
| CN2753644Y (en) * | 2004-12-10 | 2006-01-25 | 比亚迪股份有限公司 | Automobile electric-controller steering operation device |
| CN2803861Y (en) * | 2005-05-11 | 2006-08-09 | 中国第一汽车集团公司 | Electric boosting steering system |
| CN201261490Y (en) * | 2008-06-23 | 2009-06-24 | 重庆工学院 | Variable steering transmitting ratio electric power-assisted steering system |
| CN101695935A (en) * | 2009-10-28 | 2010-04-21 | 南京航空航天大学 | Active steering system combined with electrical power-assisted steering function and control method thereof |
| CN101700786A (en) * | 2009-11-09 | 2010-05-05 | 南京航空航天大学 | Recirculating-ball electric power-assisted steering system with variable transmission ratio for bus and control method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303641A (en) * | 2011-06-14 | 2012-01-04 | 西安交通大学 | Disc-type servomotor direct-driving device suitable for self-adaptable power-assisted steering of automobile |
| CN102975714A (en) * | 2012-11-19 | 2013-03-20 | 北京工业大学 | Electric vehicle chassis system and collaborative control method thereof |
| CN102975714B (en) * | 2012-11-19 | 2015-10-14 | 北京工业大学 | A kind of elec. vehicle chassis system |
| CN108556907A (en) * | 2018-04-10 | 2018-09-21 | 深圳市云图电装系统有限公司 | The control method of power steering, apparatus and system |
| CN113479257A (en) * | 2021-08-23 | 2021-10-08 | 浙江吉利控股集团有限公司 | Steering control system and vehicle |
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Open date: 20101201 |