DE102005001972B4 - Method for controlling a drive system in a motor vehicle - Google Patents

Method for controlling a drive system in a motor vehicle Download PDF

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Publication number
DE102005001972B4
DE102005001972B4 DE102005001972A DE102005001972A DE102005001972B4 DE 102005001972 B4 DE102005001972 B4 DE 102005001972B4 DE 102005001972 A DE102005001972 A DE 102005001972A DE 102005001972 A DE102005001972 A DE 102005001972A DE 102005001972 B4 DE102005001972 B4 DE 102005001972B4
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DE
Germany
Prior art keywords
wheel torque
drive system
controlling
accelerator pedal
motor vehicle
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
Application number
DE102005001972A
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German (de)
Other versions
DE102005001972A1 (en
Inventor
Emanuel Fuchs
Hubert Dr. Schumacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE102005001972A priority Critical patent/DE102005001972B4/en
Publication of DE102005001972A1 publication Critical patent/DE102005001972A1/en
Application granted granted Critical
Publication of DE102005001972B4 publication Critical patent/DE102005001972B4/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
    • B60W30/1882—Controlling power parameters of the driveline, e.g. determining the required power characterised by the working point of the engine, e.g. by using engine output chart
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
    • B60W40/13—Load or weight
    • B60W2040/1307—Load distribution on each wheel suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0604—Throttle position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/20—Ambient conditions, e.g. wind or rain

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Verfahren zum Steuern eines Antriebssystems in einem Kraftfahrzeug mit mindestens einem elektronischen Steuergerät, das abhängig von verschiedenen Eingangssignalen den Fahrwiderstand ermittelt und das als Eingangssignal auch die Stellung des Fahrpedals erfasst und daraus entsprechend einer Grundkennlinie ein vom Fahrer gewünschtes Radmoment ermittelt, dadurch gekennzeichnet, dass das Steuergerät den Fahrwiderstand ebenfalls in ein Radmoment umrechnet und die dem Fahrpedal zugeordnete Grundkennlinie jeweils mit einem Offset, der zumindest einem Teil dieses fahrwiderstandsbezogenen Radmoments entspricht, beaufschlagt.method for controlling a drive system in a motor vehicle with at least an electronic control unit, that depends determined by different input signals the driving resistance and that also detects the position of the accelerator pedal as an input signal and from this according to a basic characteristic a desired by the driver Wheel torque determined, characterized in that the control device the driving resistance also converted into a wheel torque and assigned to the accelerator pedal Basic characteristic each with an offset, the at least one part this road resistance related wheel torque corresponds, applied.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Steuern eines Antriebssystems in einem Kraftfahrzeug nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a method for controlling a drive system in a motor vehicle according to the preamble of patent claim 1.

Ein derartiges Verfahren ist beispielsweise aus der DE 196 37 210 A1 bekannt. Bei diesem bekannten Verfahren werden zum einen das über das Fahrpedal angeforderte Radmoment und zum anderen ein Sammelsurium verschiedener Betriebsparameter in einer zentralen Einheit in nicht näher dargestellter Weise zum zentralen Steuern eines Antriebssystems miteinander verarbeitet.Such a method is for example from the DE 196 37 210 A1 known. In this known method, on the one hand requested via the accelerator pedal wheel torque and, secondly, a hodgepodge of different operating parameters in a central unit in a manner not shown for centrally controlling a drive system processed together.

Es ist Aufgabe der Erfindung, ein Verfahren zum Steuern eines Antriebssystems in einem Kraftfahrzeug im Hinblick auf eine Komfortoptimierung zu verbessern.It The object of the invention is a method for controlling a drive system in a motor vehicle with a view to improving comfort.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des unabhängigen Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind die Gegenstände der abhängigen Patentansprüche.These The object is achieved by the Characteristics of the independent Patent claim 1 solved. Advantageous developments are the subject matters of the dependent claims.

Bei dem erfindungsgemäßen Verfahren zum Steuern eines Antriebssystems in einem Kraftfahrzeug mit mindestens einem elektronischen Steuergerät, das abhängig von verschiedenen Eingangssignalen den Fahrwiderstand ermittelt und das als Eingangssignal auch die Stellung des Fahrpedals erfasst und daraus entsprechend einer Grundkennlinie ein vom Fahrer gewünschtes Radmoment ermittelt, rechnet das Steuergerät den Fahrwiderstand ebenfalls in ein Radmoment um und beaufschlagt die dem Fahrpedal zugeordnete Grundkennlinie jeweils mit einem Offset, der zumindest einem Teil dieses fahrwiderstandsbezogenen Radmoments entspricht.at the method according to the invention for controlling a drive system in a motor vehicle with at least an electronic control unit, that depends determined by different input signals the driving resistance and that also detects the position of the accelerator pedal as an input signal and from this according to a basic characteristic a desired by the driver Determined wheel torque, the controller calculates the driving resistance also in a wheel torque and applied to the accelerator pedal associated Basic characteristic each with an offset, the at least one part this road resistance related wheel torque corresponds.

Vorzugsweise berechnet das Steuergerät den dem Fahrwiderstand zugeordneten Offset (gesamtes fahrwiderstandsbezogenes Radmoment oder Teil davon) in Abhängigkeit von weiteren Betriebsparametern, wie z. B. vom Fahrertyp (längerfristiges Fahrverhalten), vom momentanen Fahrverhalten und/oder von verschiedenen definierten Fahrzeugzuständen.Preferably the controller calculates the the travel resistance assigned offset (total Fahrwiderstandsbezogenes Wheel torque or part thereof) as a function of further operating parameters, such as B. driver type (longer-term driving behavior), from the current driving behavior and / or from various defined Vehicle conditions.

Der Erfindung liegt folgende Erkenntnis zugrunde: Bei bekannten Verfahren zum Steuern eines Antriebssystems Konfigurationen ist üblicherweise der Zusammenhang zwischen der Stellung des Fahrpedals und einem Motor- oder Radmoment in Form einer Art Grundkennlinie zum Steuern eines Antriebssystems in einem elektronischen Steuergerät hinterlegt. Das Antriebssystem besteht dabei beispielsweise aus einer elektronisch steuerbaren Brennkraftmaschine und gegebenenfalls auch aus einem elektronisch steuerbaren Getriebe. Weiterhin erkennt üblicherweise eine eigenständige Steuerlogik Abweichungen von Normbedingungen, z. B. abhängig von der Fahrbahnneigung, dem Luftdruck und der Fahrzeugbeladung, und bestimmt daraus einen als Fahrwiderstand bezeichneten Wert. Dieser Fahrwiderstand wird in bekannter Weise entkoppelt von der dem Fahrerwunsch zugeordneten Grundkennlinie bei der Berechnung einer Soll-Größe für die Einzelkomponenten des Antriebssystems berücksichtigt. Dabei wird das Zusammenwirken der an der Umsetzung eines Soll-Radmoments beteiligten Einzelkomponenten nicht koordiniert. Die Erfindung berücksichtigt den Fahrwiderstand bereits bei einer ersten Sollvorgabe für ein gewünschtes Radmoment, wenn das Radmoment vom Fahrer vorgegeben wird. Die Einzelkomponenten des Antriebssystems erhalten somit lediglich das Soll-Radmoment, dessen Umsetzung koordiniert werden muss. Eine Arbeitsaufteilung im Hinblick auf die Kompensation von verschiedenen Störgrößen ist nicht mehr Aufgabe der Einzelkomponenten des Antriebssystems. Somit kann das Antriebssystem im Hinblick auf die Einstellung eines Soll-Radmoments harmonischer gesteuert und der Fahrkomfort erhöht werden.Of the Invention is based on the following finding: In known methods for controlling a drive system configurations is usually the Relationship between the position of the accelerator pedal and a motor or wheel torque in Form of a kind of basic characteristic for controlling a drive system stored in an electronic control unit. The drive system consists for example of an electronically controllable internal combustion engine and optionally also from an electronically controllable transmission. Furthermore usually recognizes an independent one Control logic Deviations from standard conditions, eg. B. depending on the road gradient, the air pressure and the vehicle load, and determines from this a value called the driving resistance. This Driving resistance is decoupled in a known manner from the driver's request assigned basic characteristic in the calculation of a target size for the individual components of the drive system taken into account. Here, the interaction of the implementation of a target wheel torque not coordinated individual components involved. The invention takes into account the driving resistance already at a first target specification for a desired Wheel torque, if the wheel torque is specified by the driver. The individual components of the drive system thus receive only the desired wheel torque, whose implementation needs to be coordinated. A work split with regard to the compensation of different disturbances no longer task of the individual components of the drive system. Consequently can the drive system with regard to the setting of a target wheel torque controlled in a more harmonious way and driving comfort is increased.

Claims (2)

Verfahren zum Steuern eines Antriebssystems in einem Kraftfahrzeug mit mindestens einem elektronischen Steuergerät, das abhängig von verschiedenen Eingangssignalen den Fahrwiderstand ermittelt und das als Eingangssignal auch die Stellung des Fahrpedals erfasst und daraus entsprechend einer Grundkennlinie ein vom Fahrer gewünschtes Radmoment ermittelt, dadurch gekennzeichnet, dass das Steuergerät den Fahrwiderstand ebenfalls in ein Radmoment umrechnet und die dem Fahrpedal zugeordnete Grundkennlinie jeweils mit einem Offset, der zumindest einem Teil dieses fahrwiderstandsbezogenen Radmoments entspricht, beaufschlagt.A method for controlling a drive system in a motor vehicle having at least one electronic control unit, which determined as a function of various input signals to driving resistance and the detected as the input signal also the position of the accelerator pedal and determines in accordance with a basic characteristic curve, a desired by the driver wheel torque, characterized in that the control unit The driving resistance is also converted into a wheel torque and the basic characteristic associated with the accelerator pedal is in each case subjected to an offset which corresponds to at least part of this driving-resistance-related wheel torque. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, dass das Steuergerät den dem Fahrwiderstand zugeordneten Offset variabel in Abhängigkeit von weiteren Betriebsparametern berechnet.Method according to claim 1, characterized that the controller the offset assigned to the driving resistance variable depending on calculated from other operating parameters.
DE102005001972A 2005-01-15 2005-01-15 Method for controlling a drive system in a motor vehicle Expired - Fee Related DE102005001972B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102005001972A DE102005001972B4 (en) 2005-01-15 2005-01-15 Method for controlling a drive system in a motor vehicle

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Application Number Priority Date Filing Date Title
DE102005001972A DE102005001972B4 (en) 2005-01-15 2005-01-15 Method for controlling a drive system in a motor vehicle

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DE102005001972A1 DE102005001972A1 (en) 2006-07-27
DE102005001972B4 true DE102005001972B4 (en) 2007-05-10

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* Cited by examiner, † Cited by third party
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US9836895B1 (en) * 2015-06-19 2017-12-05 Waymo Llc Simulating virtual objects

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19637210A1 (en) * 1996-09-12 1998-03-19 Siemens Ag Powertrain control for a motor vehicle
WO2003002368A1 (en) * 2001-06-28 2003-01-09 Siemens Aktiengesellschaft Method for controlling a drivetrain on a motor vehicle
DE10233576A1 (en) * 2002-07-24 2004-02-05 Robert Bosch Gmbh Drive unit control method for vehicle involves forming desired value for output for drive unit depending on acceleration desire and determining minimum and maximum values for setting driving pedal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19637210A1 (en) * 1996-09-12 1998-03-19 Siemens Ag Powertrain control for a motor vehicle
WO2003002368A1 (en) * 2001-06-28 2003-01-09 Siemens Aktiengesellschaft Method for controlling a drivetrain on a motor vehicle
DE10233576A1 (en) * 2002-07-24 2004-02-05 Robert Bosch Gmbh Drive unit control method for vehicle involves forming desired value for output for drive unit depending on acceleration desire and determining minimum and maximum values for setting driving pedal

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8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee