DE4420309B4 - Method and arrangement for controlling an electro-hydraulic pressure supply for an auxiliary power device of a motor vehicle - Google Patents
Method and arrangement for controlling an electro-hydraulic pressure supply for an auxiliary power device of a motor vehicle Download PDFInfo
- Publication number
- DE4420309B4 DE4420309B4 DE19944420309 DE4420309A DE4420309B4 DE 4420309 B4 DE4420309 B4 DE 4420309B4 DE 19944420309 DE19944420309 DE 19944420309 DE 4420309 A DE4420309 A DE 4420309A DE 4420309 B4 DE4420309 B4 DE 4420309B4
- Authority
- DE
- Germany
- Prior art keywords
- speed
- electric motor
- deviations
- auxiliary power
- pressure supply
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/08—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for fluid
-
- 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
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Abstract
Verfahren zur Ansteuerung einer elektrohydraulischen Druckversorgung für eine Hilfskrafteinrichtung eines Kraftfahrzeuges, bei welchem ein hydraulisches Pumpensystem mittels eines Elektromotors betrieben wird, dessen Drehzahl von Betriebsparametern beeinflusst wird, wobei Drehzahlabweichungen von einer vorgegebenen Solldrehzahl des Elektromotors erkannt und ausgeregelt werden, dadurch gekennzeichnet, dass die von einer Änderung des Lenkmomentes hervorgerufenen Drehzahlabweichungen ausgeregelt werden.method for controlling an electro-hydraulic pressure supply for an auxiliary power device a motor vehicle, in which a hydraulic pump system is operated by an electric motor whose speed of Operating parameters is influenced, with speed deviations detected and corrected by a predetermined target speed of the electric motor be, characterized in that of a change the steering torque caused speed deviations regulated become.
Description
Die Erfindung betrifft ein Verfahren und eine Anordnung zur Ansteuerung einer elektrohydraulischen Druckversorgung für eine Hilfskrafteinrichtung eines Kraftfahrzeuges, bei welchem ein hydraulisches Pumpensystem mittels eines Elektromotors betrieben wird, dessen Drehzahl von Betriebsparametern beeinflusst wird, wobei Drehzahlabweichungen von einer vorgegebenen Solldrehzahl des Elektromotors erkannt und ausgeregelt werden.The The invention relates to a method and an arrangement for driving an electrohydraulic pressure supply for an auxiliary power device of a Motor vehicle, in which a hydraulic pump system means an electric motor is operated, the speed of operating parameters is influenced, with speed deviations from a given Set speed of the electric motor can be detected and corrected.
In der Kraftfahrzeugtechnik ist es hinlänglich bekannt, mittels hydraulischer Fremdenergien, Hilfskraftsysteme zu realisieren. Dabei wird ein Pumpensystem mittels eines Elektromotors angetrieben. Der Elektromotor ist dabei direkt mit der Batteriespannung des Fahrzeuges verbunden.In The automotive technology, it is well known, by means of hydraulic Foreign energies, auxiliary power systems to realize. This is a Pump system driven by an electric motor. The electric motor is directly connected to the battery voltage of the vehicle.
Eine Laständerung verursacht einen Leistungs-, insbesondere Stromanstieg am Elektromotor. Es sind z. B. Lenkhilfesysteme bekannt, die, ausgehend von einem Stand-by-Betrieb, den Elektromotor nur im Bedarfsfalle mit voller Leistung betreiben. Dabei ergibt sich die Schwierigkeit, den Bedarfsfall als solchen überhaupt zu erkennen. Zudem wird dem System auch im Teillastbetrieb die volle Energie zugeführt. Weiterhin ergibt sich durch die endliche Hochlaufgeschwindigkeit des Elektromotors ein Zeitverzug beim Ansprechen des Systems, der vom Fahrer als störend empfunden wird.A load Regulation causes a power, in particular current increase at the electric motor. It are z. B. power steering systems known which, starting from a stand-by operation, Only operate the electric motor at full power if necessary. This results in the difficulty of the need as such at all to recognize. In addition, the system is also in partial load the full Energy supplied. Furthermore, results from the finite acceleration speed of the electric motor, a time delay in the response of the system, the from the driver as annoying is felt.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Anordnung zur elektrohydraulischen Druckversorgung für eine Hilfskrafteinrichtung anzugeben, welche im konkreten Bedarfsfall die Hilfskraftunterstützung mit geringstmöglichem Energieaufwand ermöglicht und dabei einfach zu realisieren ist.Of the Invention is based on the object, a method and an arrangement for electrohydraulic pressure supply for an auxiliary power device specify which, in case of need, the auxiliary assistance with the lowest possible Energy expenditure allows and easy to realize.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die von einer Änderung des Lenkmoments hervorgerufenen Drehzahlabweichungen ausgeregelt werden.According to the invention Task solved by that of a change The steering torque caused speed deviations regulated become.
Dabei wird die Solldrehzahl so gewählt, dass sie unter allen Randbedingungen im Bedarfsfall zu einer ausreichenden Hilfskraftunterstützung führt.there the setpoint speed is chosen that under all boundary conditions, if necessary, they are sufficient Power assistance leads.
Der Vorteil der Erfindung besteht darin, dass zur Hilfskraftunterstützung jeweils nur soviel Energie dem Bordnetz entnommen wird, wie zur Hilfskraftunterstützung unbedingt notwendig ist. Bei der Ausregelung der Drehzahl treten außerdem keine so hohen Ströme auf wie bei der Beschleunigung des Motors.Of the Advantage of the invention is that for auxiliary power support respectively only as much energy is taken from the vehicle electrical system, as for auxiliary power assistance necessarily necessary is. When adjusting the speed also occur no such high currents on as in the acceleration of the engine.
Außerdem ermöglicht die Ausregelung eine schnelle Reaktion des Motors auf Änderungen des Lenkmoments, da die im Motor vorhandene kinetische Energie genutzt wird. Aufgrund des Vermeidend von sprunghaften Änderungen der Motordrehzahl wird die Lebensdauer des Elektromotors vergrößert, da hohe Stromstärken einen Verbrauch der Kohlen des Elektromotors forcieren.In addition, the Balancing a fast response of the engine to changes of the steering torque, as used in the engine kinetic energy becomes. Due to the avoidance of sudden changes in engine speed is the life of the electric motor increases because high currents a Force consumption of the coals of the electric motor.
Das erfindungsgemäße Verfahren arbeitet unabhängig von Schwankungen der Versorgungsspannung und der Temperatur.The inventive method works independently fluctuations in supply voltage and temperature.
Da durch die Konstanthaltung der Drehzahl ein gleichmäßiges akustisches Frequenzspektrum erzeugt wird, sind im Fahrzeug auftretende Geräuscheffekte gezielter zu bedämpfen.There by keeping the speed constant a uniform acoustic Frequency spectrum is generated, are occurring in the vehicle noise effects targeted to dampen.
Die Drehzahl wird durch einen geeigneten Sensor erfaßt und vorteilhafterweise wird der Elektromotor über ein pulsweitenmoduliertes Spannungssignal angesteuert.The Speed is detected by a suitable sensor and advantageously becomes the electric motor over a pulse width modulated voltage signal is activated.
Bei einer von der Kraftfahrzeuggeschwindigkeit abhängigen Lenkunterstützung wird der Sollwert der Drehzahl an die jeweilige Fahrzeugeschwindigkeit angepaßt.at is dependent on the vehicle speed steering assistance the setpoint of the speed to the respective vehicle speed customized.
Eine Anordnung zur Durchführung des Verfahrens weist eine Regelelektronik auf, welche einerseits mit dem Elektromotor und andererseits mit einer Drehzahlerfassungseinrichtung verbunden ist. Die Drehzahlerfassungseinrichtung ist dem Elektromotor gegenüberliegend angeordnet.A Arrangement for implementation of the method has a control electronics, which on the one hand with the electric motor and on the other hand with a speed detecting device connected is. The speed detection device is opposite to the electric motor arranged.
Weitere Merkmale sind in den Unteransprüchen gekennzeichnet.Further Features are in the subclaims characterized.
Die Erfindung läßt zahlreiche Ausführungsformen zu. Eine davon soll anhand der in der Zeichnung dargestellten Figuren näher erläutert werden. Es zeigt:The Invention leaves numerous embodiments to. One of them should be based on the figures shown in the drawing be explained in more detail. It shows:
In
Die
Regeleinrichtung
Anhand
der Darstellung in
Es
ist bekannt, daß mit
steigendem Drehmoment M die Drehzahl n des Elektromotors
Der
Mikroprozessor
Der
Mikroprozessor
Bordnetzspannungsänderungen und Temperatureinflüsse auf das System werden dabei ebenfalls ausgeregelt.Board supply voltage changes and temperature influences The system will also be adjusted.
Zur
Realisierung einer geschwindigkeitsabhängigen Lenkhilfeunterstützung wertet
der Mikroprozessor
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944420309 DE4420309B4 (en) | 1994-06-10 | 1994-06-10 | Method and arrangement for controlling an electro-hydraulic pressure supply for an auxiliary power device of a motor vehicle |
US08/755,061 US5900704A (en) | 1994-06-10 | 1996-11-22 | Process and system for controlling an electrohydraulic pressure supply for an auxiliary power device for an automotive vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944420309 DE4420309B4 (en) | 1994-06-10 | 1994-06-10 | Method and arrangement for controlling an electro-hydraulic pressure supply for an auxiliary power device of a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4420309A1 DE4420309A1 (en) | 1995-12-14 |
DE4420309B4 true DE4420309B4 (en) | 2008-03-27 |
Family
ID=6520274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19944420309 Expired - Fee Related DE4420309B4 (en) | 1994-06-10 | 1994-06-10 | Method and arrangement for controlling an electro-hydraulic pressure supply for an auxiliary power device of a motor vehicle |
Country Status (1)
Country | Link |
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DE (1) | DE4420309B4 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19623567C2 (en) * | 1996-06-13 | 2000-06-08 | Daimler Chrysler Ag | Hydraulic servo control, in particular hydraulic power steering for motor vehicles |
DE19648402C2 (en) * | 1996-11-22 | 2000-04-20 | Mannesmann Vdo Ag | Method for the continuous detection of a rotational speed of electric motors and an arrangement for carrying out the method |
US6092618A (en) * | 1997-10-31 | 2000-07-25 | General Motors Corporation | Electro-hydraulic power steering control with fluid temperature and motor speed compensation of power steering load signal |
DE19820381B4 (en) | 1998-05-07 | 2007-01-25 | Trw Fahrwerksysteme Gmbh & Co Kg | Method for influencing the valve characteristic |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4032876A1 (en) * | 1990-10-17 | 1992-04-23 | Teves Gmbh Alfred | Electric motor driven hydraulic pump unit - uses voltage control system to maintain constant pump motor speed under varying pressure conditions |
EP0534332A1 (en) * | 1991-09-26 | 1993-03-31 | Abb Truck Ab | Hydraulic servo unit, primarily for the steering mechanism of a vehicle |
-
1994
- 1994-06-10 DE DE19944420309 patent/DE4420309B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4032876A1 (en) * | 1990-10-17 | 1992-04-23 | Teves Gmbh Alfred | Electric motor driven hydraulic pump unit - uses voltage control system to maintain constant pump motor speed under varying pressure conditions |
EP0534332A1 (en) * | 1991-09-26 | 1993-03-31 | Abb Truck Ab | Hydraulic servo unit, primarily for the steering mechanism of a vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE4420309A1 (en) | 1995-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: B62D 5/06 |
|
8127 | New person/name/address of the applicant |
Owner name: MANNESMANN VDO AG, 60326 FRANKFURT, DE |
|
8125 | Change of the main classification |
Ipc: B62D 5/065 |
|
8127 | New person/name/address of the applicant |
Owner name: SIEMENS AG, 80333 MUENCHEN, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140101 |