WO2004022412A1 - Vorrichtung und verfahren zur verbesserung des rücklaufverhaltens für fahrzeuge mit elektromechanischer lenkung - Google Patents
Vorrichtung und verfahren zur verbesserung des rücklaufverhaltens für fahrzeuge mit elektromechanischer lenkung Download PDFInfo
- Publication number
- WO2004022412A1 WO2004022412A1 PCT/EP2003/009298 EP0309298W WO2004022412A1 WO 2004022412 A1 WO2004022412 A1 WO 2004022412A1 EP 0309298 W EP0309298 W EP 0309298W WO 2004022412 A1 WO2004022412 A1 WO 2004022412A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steering
- torque
- determined
- setpoint
- steering angle
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0466—Controlling the motor for returning the steering wheel to neutral position
Definitions
- the invention relates to a device and a method for improving the return behavior for vehicles with electromechanical steering.
- a support force is applied by an electric servo motor in addition to a steering angle specified by a driver using a steering means, for example a steering wheel, via a continuous mechanical connection.
- a steering means for example a steering wheel
- the resetting of mechanical or electromechanical steering gears is often too low due to system friction and axle kinematics, so that an undesirable residual angle can remain.
- a hydraulic power steering system comprising a servo reset device with an electric motor, by means of which a reset torque is exerted on the steering wheel, a signal for the electric motor being able to be determined in a computer, for example as a function of the vehicle speed.
- DE 19908832 A1 discloses a steering device for vehicles in which there is no mechanical coupling between steerable vehicle wheels and a steering wheel. A restoring torque is applied for a resetting by a spring arrangement and an electric motor driving situation.
- the invention is therefore based on the technical problem of creating a device and a method for improving the return behavior for vehicles with electromechanical steering.
- a target pressure-actuating torque that is dependent on the driving situation is determined, and the servo motor of the electromechanical steering system is acted upon by the target pressure-actuating torque.
- the input data for determining the SoUruckstellmoments are determined at least as a function of a steering angle, a steering angle speed and / or a vehicle speed by characteristic curves, the characteristic curves either can be described by functions defined at least in sections and / or by tables.
- An active return with the driving pressure-dependent setpoint torque increases the safety and quality of the electromechanical steering.
- the existing servo motor of the electromechanical steering is preferably used for the active return.
- the return torque is controlled in the vicinity of a steering center by the dependence of the return torque on the steering angle.
- a reversing speed (for example when the steering wheel is released when cornering) can be influenced by the dependence on the steering angular speed.
- the dependency on the vehicle speed causes a weakening or reinforcing effect of the restoring torque and enables the restoring torque to be deactivated when stationary, for example when the vehicle is parked.
- Characteristic curves make it easy to map non-linear relationships.
- the active return can easily be adapted to different types of vehicles and / or drivers.
- the first and the second computing unit can be designed as a common element or as separate elements.
- the determined target pressure torque is limited to a working range. This prevents high restoring torques from negatively affecting the stability of the vehicle.
- the setpoint pressure torque to be applied is determined as a function of a steering torque.
- the setpoint pressure torque in cornering is limited by the dependency.
- a value determined from the steering torque is filtered before processing.
- the filter can either be designed as an analog filter or as a digital filter method. Filtering improves the quality of the signal.
- the invention is explained in more detail below on the basis of a preferred exemplary embodiment.
- the single figure shows a schematic block diagram of a device for an active return.
- a computing unit 1 shows an active return through a determination of a reset torque in a computing unit 1, comprising the modules 11, 12, 13, 14, 15
- Computing unit 1 is dependent on a steering angle ⁇ , a steering angle speed ⁇ ° , a vehicle speed v and a steering torque ⁇ ⁇ and is determined in a computing unit 2, comprising the components 21, 22, 23, 24, 25, 26, using characteristic curves.
- a linear, unscaled dependency can be represented by a linear characteristic with slope one.
- the computing units 1, 2 can be implemented jointly or separately.
- individual modules 11-15 or 21-26 are formed together.
- the components 21 - 26 can, however, also be used in sensor units for detecting the steering angle ⁇ , the steering angle speed ⁇ ° , the
- Vehicle speed v or the steering torque ⁇ ⁇ can be integrated. Processing of the detected signals is conceivable digitally or analogously, but digital processing is preferred.
- a suitable selection of the characteristic curves enables the active return to be individually adjusted.
- Continuous characteristic curves can be described by functions.
- Non-continuous characteristic curves can be described in sections by functions or in the form of tables, with individual values being obtained by interpolation.
- a target, return speed is determined from the steering angle ⁇ scaled by the module 21 and the vehicle speed v scaled by the module 22 by multiplication in a module 11 and is amplified by a factor Ki in order to determine the torque reset torque.
- a difference is formed between the target return speed obtained and a value determined in module 23 from the applied steering angle speed ⁇ ° .
- the result is scaled in a module 13 with a control gain K 2 , so that a desired restoring torque is obtained.
- the value obtained is limited to a specific work area by a module 14.
- This limited restoring torque is scaled in module 15 with a value obtained in module 26 from the applied steering torque ⁇ ⁇ in such a way that the setpoint actuating torque remains limited when cornering.
- the return pressure behavior of an electromechanical steering system is improved by the set pressure setting torque.
- a dashed line indicates that the steering torque ⁇ ⁇ is taken into account in module 11.
- a second value is determined in the module 24 by means of a further characteristic curve from the vehicle speed v and this value is supplied to the module 13.
- low hysteresis effects are caused by filter elements 31, 32.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
- Steering Controls (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50306528T DE50306528D1 (de) | 2002-09-06 | 2003-08-21 | Vorrichtung und verfahren zur verbesserung des rücklaufverhaltens für fahrzeuge mit elektromechanischer lenkung |
EP03750423A EP1537003B1 (de) | 2002-09-06 | 2003-08-21 | Vorrichtung und verfahren zur verbesserung des rücklaufverhaltens für fahrzeuge mit elektromechanischer lenkung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244069A DE10244069A1 (de) | 2002-09-06 | 2002-09-06 | Vorrichtung und Verfahren zur Verbesserung des Rücklaufverhaltens für Fahrzeuge mit elektromechanischer Lenkung |
DE10244069.7 | 2002-09-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004022412A1 true WO2004022412A1 (de) | 2004-03-18 |
WO2004022412A8 WO2004022412A8 (de) | 2005-05-19 |
Family
ID=31502549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/009298 WO2004022412A1 (de) | 2002-09-06 | 2003-08-21 | Vorrichtung und verfahren zur verbesserung des rücklaufverhaltens für fahrzeuge mit elektromechanischer lenkung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1537003B1 (de) |
CN (1) | CN100383004C (de) |
AT (1) | ATE353805T1 (de) |
DE (2) | DE10244069A1 (de) |
WO (1) | WO2004022412A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060030A1 (de) * | 2004-12-14 | 2006-06-29 | Daimlerchrysler Ag | Verfahren zum Zurückstellen eines Lenkrades in seine Ausgangsstellung und zur Bestimmung des Rückstellmomentes |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007040064B4 (de) | 2007-08-24 | 2019-04-18 | Trw Automotive Gmbh | Verfahren zur Steuerung des Rückstellmoments eines Fahrzeuglenksystems |
DE102009026497B4 (de) * | 2009-05-27 | 2011-04-28 | Ford Global Technologies, LLC, Dearborn | Verfahren zum Erkennen interner Reibung in einem Lenksystem |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0732252A2 (de) * | 1995-03-17 | 1996-09-18 | Nippondenso Co., Ltd. | Elektrische Servolenkung |
DE69303289T2 (de) | 1992-12-23 | 1997-02-20 | Taligent Inc | Steuersystem für anzeigemenüzustand |
DE19908832A1 (de) | 1999-03-01 | 2000-09-07 | Volkswagen Ag | Lenkvorrichtung für Fahrzeuge |
DE10053021A1 (de) * | 1999-10-15 | 2001-05-17 | Suzuki Motor Co | Verfahren zur Steuerung von elektrisch betätigten Lenkhilfen |
JP2002145101A (ja) * | 2000-11-17 | 2002-05-22 | Nsk Ltd | 電動パワーステアリング装置の制御装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4026625A1 (de) * | 1990-08-23 | 1992-02-27 | Bosch Gmbh Robert | Verfahren zum erkennen des reibwerts (my) |
FR2687114B1 (fr) * | 1992-02-12 | 1994-03-25 | Peugeot Automobiles | Direction assistee hydraulique a rappel asservi et commande auxiliaire. |
DE4241849C2 (de) * | 1992-12-11 | 1996-04-25 | Danfoss As | Lenksystem für Fahrzeuge oder Schiffe |
DE19625503C1 (de) * | 1996-06-26 | 1997-10-09 | Daimler Benz Ag | Lenkvorrichtung, insbesondere für ein Kraftfahrzeug |
DE19755044C1 (de) * | 1997-12-11 | 1999-03-04 | Daimler Benz Ag | Fahrzeuglenkung |
DE19912169A1 (de) * | 1998-12-29 | 2000-07-06 | Bosch Gmbh Robert | Steer-by-wire Lenksystem für Kraftfahrzeuge |
JP4988119B2 (ja) * | 2000-03-27 | 2012-08-01 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | 車両操舵装置 |
US6570352B2 (en) * | 2000-11-17 | 2003-05-27 | Nsk Ltd. | Control unit for electric power steering apparatus |
DE10060832A1 (de) * | 2000-12-07 | 2002-06-13 | Zf Lenksysteme Gmbh | Fremdkraft-Lenkeinrichtung |
-
2002
- 2002-09-06 DE DE10244069A patent/DE10244069A1/de not_active Withdrawn
-
2003
- 2003-08-21 EP EP03750423A patent/EP1537003B1/de not_active Expired - Lifetime
- 2003-08-21 AT AT03750423T patent/ATE353805T1/de not_active IP Right Cessation
- 2003-08-21 CN CNB038212366A patent/CN100383004C/zh not_active Expired - Lifetime
- 2003-08-21 DE DE50306528T patent/DE50306528D1/de not_active Expired - Lifetime
- 2003-08-21 WO PCT/EP2003/009298 patent/WO2004022412A1/de active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69303289T2 (de) | 1992-12-23 | 1997-02-20 | Taligent Inc | Steuersystem für anzeigemenüzustand |
EP0732252A2 (de) * | 1995-03-17 | 1996-09-18 | Nippondenso Co., Ltd. | Elektrische Servolenkung |
DE19908832A1 (de) | 1999-03-01 | 2000-09-07 | Volkswagen Ag | Lenkvorrichtung für Fahrzeuge |
DE10053021A1 (de) * | 1999-10-15 | 2001-05-17 | Suzuki Motor Co | Verfahren zur Steuerung von elektrisch betätigten Lenkhilfen |
JP2002145101A (ja) * | 2000-11-17 | 2002-05-22 | Nsk Ltd | 電動パワーステアリング装置の制御装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 09 4 September 2002 (2002-09-04) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060030A1 (de) * | 2004-12-14 | 2006-06-29 | Daimlerchrysler Ag | Verfahren zum Zurückstellen eines Lenkrades in seine Ausgangsstellung und zur Bestimmung des Rückstellmomentes |
Also Published As
Publication number | Publication date |
---|---|
DE10244069A1 (de) | 2004-03-11 |
CN1681698A (zh) | 2005-10-12 |
EP1537003B1 (de) | 2007-02-14 |
EP1537003A1 (de) | 2005-06-08 |
DE50306528D1 (de) | 2007-03-29 |
CN100383004C (zh) | 2008-04-23 |
WO2004022412A8 (de) | 2005-05-19 |
ATE353805T1 (de) | 2007-03-15 |
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