EP0639706B1 - System for the control of an actuator adjusting the air supply of a vehicle engine - Google Patents
System for the control of an actuator adjusting the air supply of a vehicle engine Download PDFInfo
- Publication number
- EP0639706B1 EP0639706B1 EP94112010A EP94112010A EP0639706B1 EP 0639706 B1 EP0639706 B1 EP 0639706B1 EP 94112010 A EP94112010 A EP 94112010A EP 94112010 A EP94112010 A EP 94112010A EP 0639706 B1 EP0639706 B1 EP 0639706B1
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- European Patent Office
- Prior art keywords
- subassembly
- drive system
- control element
- actuator
- accelerator
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
Definitions
- the invention relates to a system for controlling an actuator for adjustment the air supply of a motor vehicle engine, with an accelerator pedal, with at least an accelerator pedal position sensor for sensing the current accelerator pedal position and with a first electronic module for processing the signals of the at least one accelerator pedal position sensor and with an actuator for Adjustment of the air supply to a motor vehicle engine with an actuator Actuation of the actuator, with a position sensor for sensing the current position of the actuator, with a second electronic assembly, which controls the actuator and evaluates the signals from the position sensor or processed, the first and the second electronic assembly by means of a Communication line and one of the modules via one Communication channel in connection with at least one other module stands.
- a system is known from US-A 5,048,481.
- bus system An example of a bus system is the CAN bus system, which in Motor vehicles is widely used. (Dais s et al: "Technical Concept of the serial bus system CAN part 1 "ATZ Automobiltechnische Journal, Vol. 94, No. 2, February 1, 1992, pages 66-70, 73-77).
- the second assembly gives signals to the first module via the communication line, which the represent the current position of the actuator.
- the basic system according to the invention is formed by two assemblies, the Distribution of the functions assigned to the modules advantageously in this way takes place that the electrical connection between the modules as simple as possible can be executed.
- the first assembly is still connected to the accelerator pedal and provides also connect via a communication channel or a bus system at least one other assembly, while the second assembly Check the actuator.
- the first assembly connected to the accelerator pedal can all centrally Check input signals that influence the actuation of the actuator.
- these are the signals generated by the accelerator pedal sensor, which are direct are evaluated by the first module and all other signals by other assemblies (engine control, traction control, Speed controller, etc.) are generated and sent to the first via the bus system Assembly.
- the first module easily the signals of the Accelerator pedal sensors can be on the bus system, so that this from other Assemblies can be used.
- the major part of the computing power especially those for signal processing in the communication of Bus systems is required, which can be assigned to the first module.
- the second assembly connected to the actuator is as short as possible
- the second module is generally more prone to failure or by using less sensitive and resilient components at least comparatively more expensive than the first assembly. Therefore, it is advantageous, complex functions, where possible, of the first assembly assign.
- the first can be advantageous in terms of cabling and interference immunity Module are designed by the accelerator pedal sensors with this first Assembly form a structural unit.
- a motor controller belongs to connected modules, what ignition and injection of the motor vehicle engine controls.
- Such a motor control can depend on Accelerator pedal signals also control signals Generate actuator, which via the bus system to the get first assembly and from this, possibly in processed form, via the communication line to the given second module for controlling the actuator can be.
- a particular advantage here is that that the current engine operating condition when controlling the Actuator is taken into account.
- both in the first and in the second assembly monitoring and emergency control functions to be provided, which in the event of failure or malfunction of one Assembly enables emergency operation of the vehicle.
- Mutual monitoring of the Functions of the first and second assembly via the Communication line are provided.
- a redundant design within each module individual functions for example the redundant evaluation of preferably several Position sensors, for example on the accelerator pedal.
- Figure 1 shows a second assembly (4), which one Actuator (7) designed to actuate the Actuator (6) for adjusting the air supply one not controls motor vehicle engine shown.
- a position sensor is connected to the actuator (6) (8), which supplies the second module (4) with signals, which the current position of the actuator (6) represent.
- the second module (4) is a bidirectional one Data line executed communication line (5) with a first assembly (3) connected.
- the first module (3) receives signals from at least one sensor connected to an accelerator pedal (1) (2).
- the first module (3) is via a communication channel to a further module (10) or via a bus system (9) connected to several other modules (10, 11, 12).
- modules (10, 11, 12) These are an assembly for motor control (10), which in particular the ignition and injection of the Motor vehicle engine controls, as well as further assemblies (11, 12) execute the driving state special functions, such as Example of a traction control system, a Speed controller and / or an electronically controlled Automatic transmission.
- FIG. 2 shows a block diagram of the first assembly (3).
- This module receives the signals from two with the Accelerator pedal (1) connected position sensors (2a, 2b) fed.
- the position sensors (2a, 2b) can for example as two potentiometers or as one Potentiometer and a switch can be executed, the second sensor (2b) for function monitoring of the first Sensor (2a) is used.
- Particularly advantageous regarding a long life and a short one It is susceptible to failure if at least one of the Accelerator pedal position sensors (2a, 2b) as a contactless sensor is executed.
- the signals from the accelerator pedal position sensors (2a, 2b) are via signal processing modules (18a, 18b) Microcomputer (13a) supplied.
- This microcomputer is in Data exchange with a communication controller (13b) or takes over (with corresponding computing power of the Microcomputers) themselves this function.
- the communication controller (13b) in turn gives and receives via the interface (14b) data from the Communication channel or the bus system (9).
- the Communication line (5) is very simple and can directly from the microcomputer via the interface (14a) (13a) can be controlled. Since the interface (14b) the only connection of the modules (3, 4) to Communication channel or bus system (9) must be Adaptation of these modules (3, 4) to different types Communication channels or bus systems only one Adaptation of the communication controller (13b) and / or the Interface (14b) can be made, which is only one comparatively minor effort means. The remaining Components of both assemblies (3, 4), however, are universal usable.
- a voltage supply module (15) which, via the ignition switch (17) to the Vehicle electrical system (16) is switched.
- the second assembly (4) shown in FIG. 3 has a structure comparable to the first assembly (3).
- the central component is a microcomputer (22). This is here with only one interface module (20) connected and provides the data connection Communication line (5) ago.
- the module receives this communication line (5) (4) signals for actuating the actuator (6).
- the assembly (4) is also on the Communication line (5) signals about the current position of the actuator (6) to the assembly (3).
- the position sensor connected to the actuator (6) (8) transmits signals about the current actuator position the signal processing module (19) to the microcomputer (22).
- the at least one accelerator pedal position sensor (2, 2a, 2b) gives a corresponding to the actuation of the accelerator pedal (1) Signal to the first module (3), which a this signal corresponding signal or date on the communication channel or the bus system (9) there. This signal or date gets to the modules for the engine control (10) and to the modules for the special driving state functions (11, 12).
- modules for special driving state functions (11, 12) are based on the input data of these functions Accelerator pedal signal interpreted driver request and in possibly modified form on the Communication channel or the bus system forwarded.
- This driver request is in the engine control module (10) based on characteristic curves or maps or Calculation rules in a control signal for adjustment the actuator (6) converted.
- This request signal comes through the Communication channel or the bus system (9) to the first Module (3) which a this request signal corresponding serial signal via the Communication line (5) to the second module (4) passes on, which in turn then the actuator (7) of the Actuator (6) controls these signals accordingly.
- the position sensor (8) generates a feedback signal via the current position of the actuator (6), which is the second Module (4) via the communication line (5) to the first assembly (3) for checking the correctness of the after the actuator has been actuated.
- the assemblies (3, 4) contain especially for the vehicle security-related tasks. Checkable for one safe operation of the vehicle can be found in the programs of the Microcomputers (13a, 22) functions for mutual Check may be provided, the modules (3, 4) for Purpose of this review test signals over the Exchange communication line (5).
- test signals are not influenced by the load on the bus system (9) can.
- each of the two modules (3, 4) can also Emergency functions are implemented, which in the event of failure of Assemblies (3, 4, 10) or communication lines (5, 9) enable emergency operation of the vehicle.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
Die Erfindung betrifft ein System zur Ansteuerung eines Stellgliedes zur Einstellung der Luftzufuhr eines Kraftfahrzeugmotors, mit einem Fahrpedal, mit mindestens einem Fahrpedalpositionssensor zur Sensierung der aktuellen Fahrpedalposition und mit einer ersten elektronischen Baugruppe zur Aufbereitung der Signale des mindestens einen Fahrpedalpositionssensors und mit einem Stellglied zur Einstellung der Luftzufuhr eines Kraftfahrzeugmotors, mit einem Aktuator zur Betätigung des Stellgliedes, mit einem Positionssensor zur Sensierung der aktuellen Position des Stellgliedes, mit einer zweiten elektronischen Baugruppe, welche den Aktuator ansteuert und die Signale des Positionssensors auswertet oder aufbereitet, wobei die erste und die zweite elektronische Baugruppe mittels einer Kommunikationsleitung in Verbindung stehen und eine der Baugruppen über einen Kommunikationskanal mit mindestens einer weiteren Baugruppe in Verbindung steht. Ein derartiges System ist aus der US-A 5 048 481 bekannt.The invention relates to a system for controlling an actuator for adjustment the air supply of a motor vehicle engine, with an accelerator pedal, with at least an accelerator pedal position sensor for sensing the current accelerator pedal position and with a first electronic module for processing the signals of the at least one accelerator pedal position sensor and with an actuator for Adjustment of the air supply to a motor vehicle engine with an actuator Actuation of the actuator, with a position sensor for sensing the current position of the actuator, with a second electronic assembly, which controls the actuator and evaluates the signals from the position sensor or processed, the first and the second electronic assembly by means of a Communication line and one of the modules via one Communication channel in connection with at least one other module stands. Such a system is known from US-A 5,048,481.
Für Kraftfahrzeuge sind seit langem Systeme zur Ansteuerung eines Stellgliedes zur Einstellung der Luftzufuhr des Fahrzeugmotors bekannt, bei denen die Ansteuerung und Betätigung des Stellgliedes auf elektrischem Wege erfolgt. Hierzu werden zumeist Signale von einem mit dem Fahrpedal verbundenen Sensor einem Steuergerät zugeführt, welches aufgrund dieser Signale einen Stellmotor ansteuert, der ein zumeist als Drosselklappe ausgeführtes Stellglied betätigt. Oftmals ist dabei eine Sensierung und Rückmeldung der Stellgliedposition an das Steuergerät vorgesehen. Systems for controlling an actuator have long been for motor vehicles to adjust the air supply to the vehicle engine, in which the Control and actuation of the actuator takes place electrically. For this are usually signals from a sensor connected to the accelerator pedal Control unit fed, which controls a servomotor based on these signals, which actuates an actuator that is usually designed as a throttle valve. Often there is a sensing and feedback of the actuator position to the control unit intended.
In modernen Kraftfahrzeugen sind oft verschiedenartige Geräte, beziehungsweise in Geräte integrierte Funktionen vorgesehen, die die Steuerung des Stellgliedes mit beeinflussen. Dieses sind zum Beispiel Geräte zur Motorsteuerung, die neben Einspritzung und Zündung des Kraftstoffs im Fahrzeugmotor auch die Stellgliedposition beeinflussen. Weiterhin können auch Antriebsschlupfregelungen oder Geschwindigkeitsregler verändernd auf die Stellgliedposition zugreifen.Various types of devices are often found in modern motor vehicles, or in Devices integrated functions are provided that control the actuator with influence. These are, for example, devices for motor control, which in addition to Injection and ignition of the fuel in the vehicle engine also the Influence actuator position. Traction control systems can also be used or access the actuator position by changing the speed controller.
Diese beispielhafte Aufzählung zeigt, daß die Verwirklichung verschiedener Funktionen entweder zu einem sehr komplex aufgebauten Steuergerät führt oder, bedingt durch die gegenseitige Beeinflussungsmöglichkeit, zu vielen auf sehr komplexe Weise verschalteten Geräten.This exemplary list shows that the realization of different Functions either lead to a very complex control unit or, due to the possibility of mutual influence, too many on a lot complex way interconnected devices.
Die Entwicklung geht dabei zu einem modular aufgebauten System aus verschiedenen Einzelkomponenten, die über einen Kommunikationskanal oder ein Bussystem verknüpft sind. Hierdurch können anwendungsbezogen mehr oder weniger komplexe Steuerungssysteme aufgebaut werden, ohne daß an der Verkabelung zumindest wesentliche Änderungen vorgenommen werden müßten. Damit ist ein solches System leicht aufbaubar und bei Bedarf auch leicht erweiterungsfähig.The development starts with a modular system various individual components via a communication channel or a Bus system are linked. This allows more or application-related less complex control systems are built without the Wiring at least significant changes would have to be made. Such a system is easy to set up and, if necessary, also easy expandable.
Als Beispiel für ein Bussystem sei hier das CAN-Bussystem genannt, welches in
Kraftfahrzeugen weit verbreitet zur Anwendung kommt. (Dais s et al: "Technisches
Konzept des seriellen Bus-Systems CAN Teil 1" ATZ Automobiltechnische
Zeitschrift, Bd. 94, Nr. 2, 1 Februar 1992, Seiten 66 - 70, 73 - 77).An example of a bus system is the CAN bus system, which in
Motor vehicles is widely used. (Dais s et al: "Technical
Concept of the serial bus system CAN
Es ist die Aufgabe der Erfindung ein Grundsystem zur Ansteuerung eines Stellgliedes zu schaffen, das möglichst einfach und kostengünstig aufgebaut, sehr sicher in seiner Funktion ist und eine besonders zweckmäßige Aufteilung von Überwachungsfunktionen auf seine Baugruppen aufweist. It is the object of the invention a basic system for controlling a To create actuator that is as simple and inexpensive as possible, very much is safe in its function and a particularly appropriate division of Has monitoring functions on its assemblies.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die zweite Baugruppe über die Kommunikationsleitung Signale an die erste Baugruppe gibt, die die aktuelle Position des Stellgliedes repräsentieren.This object is achieved in that the second assembly gives signals to the first module via the communication line, which the represent the current position of the actuator.
Das erfindungsgemäße Grundsystem wird von zwei Baugruppen gebildet, wobei die Aufteilung der den Baugruppen zugeordneten Funktionen vorteilhafterweise derart erfolgt, daß die elektrische Verbindung zwischen den Baugruppen möglichst einfach ausgeführt sein kann.The basic system according to the invention is formed by two assemblies, the Distribution of the functions assigned to the modules advantageously in this way takes place that the electrical connection between the modules as simple as possible can be executed.
Die erste Baugruppe ist weiterhin mit dem Fahrpedal verbunden und stellt außerdem über einen Kommunikationskanal oder ein Bussystem die Verbindung zu wenigstens einer weiteren Baugruppe her, während die zweite Baugruppe die Kontrolle des Stellgliedes durchführt. Eine solche Aufteilung ist besonders zweckmäßig, da sich gleich mehrere Vorteile damit erzielen lassen:The first assembly is still connected to the accelerator pedal and provides also connect via a communication channel or a bus system at least one other assembly, while the second assembly Check the actuator. Such a division is special Appropriate, since several advantages can be achieved with it:
Die mit dem Fahrpedal verbundene erste Baugruppe kann so zentral alle Eingangssignale kontrollieren, die die Betätigung des Stellgliedes beeinflussen. Dieses sind zum einen die vom Fahrpedalsensor erzeugten Signale, welche direkt von der ersten Baugruppe ausgewertet werden und alle anderen Signale, die von anderen Baugruppen (Motorsteuerung, Antriebsschlupfregelung, Geschwindigkeitsregler usw.) erzeugt werden und über das Bussystem an die erste Baugruppe gelangen.The first assembly connected to the accelerator pedal can all centrally Check input signals that influence the actuation of the actuator. On the one hand, these are the signals generated by the accelerator pedal sensor, which are direct are evaluated by the first module and all other signals by other assemblies (engine control, traction control, Speed controller, etc.) are generated and sent to the first via the bus system Assembly.
Vorteilhaft ist auch, daß die erste Baugruppe auf einfache Weise die Signale der Fahrpedalsensoren auf das Bussystem geben kann, damit diese von weiteren Baugruppen genutzt werden können.It is also advantageous that the first module easily the signals of the Accelerator pedal sensors can be on the bus system, so that this from other Assemblies can be used.
Ein wichtiger Vorteil ist darin zu sehen, daß für das erfindungsgemäße Ansteuerungssystem nur ein Anschluß an das Bussystem benötigt wird. Daher ist eine Adaption an unterschiedliche Bussysteme verschiedener Fahrzeugtypen auf besonders einfache Weise durch Anpassung von nur einer Schnittstelle möglich. An important advantage is the fact that for the invention Control system only one connection to the bus system is required. thats why an adaptation to different bus systems of different vehicle types particularly simple way possible by adapting only one interface.
Besonders vorteilhaft ist, daß der wesentliche Anteil der Rechenleistung, insbesondere die die zur Signalverarbeitung bei der Kommunikation von Bussystemen benötigt wird, der ersten Baugruppe zugeordnet werden kann. Da nämlich die mit dem Stellglied verbundene zweite Baugruppe möglichst kurze Zuleitungen zum Stellgliedaktuator und zum Positionssensor aufweisen soll, üblicherweise im Motorraum angeordnet ist, ist durch die dort herrschenden extremen Betriebsbedingungen die zweite Baugruppe im allgemeinen störanfälliger oder durch den Einsatz von unempfindlicheren und belastbareren Bauteilen zumindest vergleichsweise kostenaufwendiger als die erste Baugruppe. Daher ist es vorteilhaft, komplexe Funktionen, soweit möglich, der ersten Baugruppe zuzuordnen.It is particularly advantageous that the major part of the computing power, especially those for signal processing in the communication of Bus systems is required, which can be assigned to the first module. There namely, the second assembly connected to the actuator is as short as possible Should have leads to the actuator actuator and to the position sensor, is usually arranged in the engine compartment, is due to the prevailing there extreme operating conditions, the second module is generally more prone to failure or by using less sensitive and resilient components at least comparatively more expensive than the first assembly. Therefore, it is advantageous, complex functions, where possible, of the first assembly assign.
Vorteilhaft, hinsichtlich Verkabelungsaufwand und Störsicherheit, kann die erste Baugruppe ausgestaltet werden, indem die Fahrpedalsensoren mit dieser ersten Baugruppe eine Baueinheit bilden.The first can be advantageous in terms of cabling and interference immunity Module are designed by the accelerator pedal sensors with this first Assembly form a structural unit.
Bezüglich der ersten und zweiten Baugruppe sind vorteilhafte Ausgestaltungen und Weiterbildungen möglich, die sich aus den Unteransprüchen und auch aus der Beschreibung des Ausführungsbeispiels ergeben.With regard to the first and second assemblies, advantageous configurations and Further training possible, resulting from the subclaims and also from the Description of the embodiment result.
So ist es beispielsweise besonders vorteilhaft, die Kommunikation zwischen der ersten und zweiten Baugruppe mit Hilfe der in heutigen Standard-Mikrocontrollern eingebauten seriellen Schnittstelle durchzuführen. Dadurch kann der Aufwand an der zweiten Baugruppe beträchtlich gesenkt werden. Demgegenüber werden bei Bussystemen in der Regel aufwendige Buscontroller verwendet, die zudem noch eine komplexe Software zur Ansteuerung benötigen.For example, it is particularly advantageous to communicate between the first and second assemblies with the help of today's standard microcontrollers built-in serial interface. This can increase the effort the second assembly can be significantly reduced. In contrast, at Bus systems usually used complex bus controllers, which also need complex software for control.
Der Aufwand zur Anpassung an die jeweiligen Anwenderwünsche ist dann durch Anpassung einer Schnittstelle leicht durchführbar. Weiterhin ist die sicherheitsrelevante Kommunikation zwischen der ersten und zweiten Baugruppe von Änderungen, Erweiterungen oder Fehlern am Bussystem nicht betroffen.The effort to adapt to the respective user requirements is then through Interface can be easily adapted. Furthermore, the security relevant Communication between the first and second assemblies from No changes, extensions or errors to the bus system affected.
Besonders vorteilhaft ist, wenn zu den an das Bussystem angeschlossenen Baugruppen eine Motorsteuerung gehört, welche Zündung und Einspritzung des Kraftfahrzeugmotors steuert. Eine solche Motorsteuerung kann abhängig von Fahrpedalsignalen auch Signale zur Steuerung des Stellgliedes erzeugen, welche über das Bussystem an die erste Baugruppe gelangen und von dieser, eventuell in aufbereiteter Form, über die Kommunikationsleitung an die zweite Baugruppe zur Ansteuerung des Stellgliedes gegeben werden können. Hierbei liegt ein besonderer Vorteil darin, daß der aktuelle Motorbetriebszustand bei der Steuerung des Stellgliedes berücksichtigt wird.It is particularly advantageous if the bus system a motor controller belongs to connected modules, what ignition and injection of the motor vehicle engine controls. Such a motor control can depend on Accelerator pedal signals also control signals Generate actuator, which via the bus system to the get first assembly and from this, possibly in processed form, via the communication line to the given second module for controlling the actuator can be. A particular advantage here is that that the current engine operating condition when controlling the Actuator is taken into account.
Vorteilhaft ist auch, sowohl in der ersten als auch in der zweiten Baugruppe Überwachungs- und Notsteuerungsfunktionen vorzusehen, welche bei Ausfall oder Fehlfunktionen einer Baugruppe einen Not-Betrieb des Fahrzeuges ermöglicht. Hierzu kann auch eine gegenseitige Überwachung der Funktionen der ersten und zweiten Baugruppe über die Kommunikationsleitung vorgesehen werden. Weiterhin kann auch innerhalb jedes Bausteins eine redundante Auslegung einzelner Funktionen realisiert sein, beispielsweise die redundante Auswertung von vorzugsweise mehreren Positionssensoren, beispielsweise am Fahrpedal.It is also advantageous, both in the first and in the second assembly monitoring and emergency control functions to be provided, which in the event of failure or malfunction of one Assembly enables emergency operation of the vehicle. Mutual monitoring of the Functions of the first and second assembly via the Communication line are provided. Furthermore can also a redundant design within each module individual functions, for example the redundant evaluation of preferably several Position sensors, for example on the accelerator pedal.
Ein Ausführungsbeispiel für ein erfindungsgemäßes Ansteuerungssystem ist in der Zeichnung dargestellt und soll im folgenden anhand der Zeichnung näher erläutert werden.An embodiment for an inventive Control system is shown in the drawing and should are explained below with reference to the drawing.
Es zeigen:
Figur 1- ein Blockschaltbild eines erfindungsgemäßen Ansteuerungssystems;
Figur 2- ein Blockschaltbild der ersten Baugruppe;
- Figur 3
- ein Blockschaltbild der zweiten Baugruppe.
- Figure 1
- a block diagram of a control system according to the invention;
- Figure 2
- a block diagram of the first assembly;
- Figure 3
- a block diagram of the second assembly.
Die Figur 1 zeigt eine zweite Baugruppe (4), welche einen als Stellmotor ausgeführten Aktuator (7) zur Betätigung des Stellgliedes (6) zur Einstellung der Luftzufuhr eines nicht dargestellten Kraftfahrzeugmotors ansteuert.Figure 1 shows a second assembly (4), which one Actuator (7) designed to actuate the Actuator (6) for adjusting the air supply one not controls motor vehicle engine shown.
Mit dem Stellglied (6) verbunden ist ein Positionssensor (8), welcher der zweiten Baugruppe (4) Signale zuführt, welche die aktuelle Position des Stellgliedes (6) repräsentieren.A position sensor is connected to the actuator (6) (8), which supplies the second module (4) with signals, which the current position of the actuator (6) represent.
Die zweite Baugruppe (4) ist über eine als bidirektionale Datenleitung ausgeführte Kommunikationsleitung (5) mit einer ersten Baugruppe (3) verbunden.The second module (4) is a bidirectional one Data line executed communication line (5) with a first assembly (3) connected.
Des weiteren erhält die erste Baugruppe (3) Signale von mindestens einem mit einem Fahrpedal (1) verbundenen Sensor (2).Furthermore, the first module (3) receives signals from at least one sensor connected to an accelerator pedal (1) (2).
Die erste Baugruppe (3) ist über einen Kommunikationskanal an eine weitere Baugruppe (10) oder über ein Bussystem (9) an mehrere weitere Baugruppen (10, 11, 12) angeschlossen. Dieses sind eine Baugruppe zur Motorsteuerung (10), welche insbesondere die Zündung und die Einspritzung des Kraftfahrzeugmotors steuert, sowie weitere Baugruppen (11, 12) die Fahrzustandssonderfunktionen ausführen, wie zum Beispiel eine Antriebsschlupfregelung, ein Geschwindigkeitsregler und/oder ein elektronisch gesteuertes Automatikgetriebe.The first module (3) is via a communication channel to a further module (10) or via a bus system (9) connected to several other modules (10, 11, 12). These are an assembly for motor control (10), which in particular the ignition and injection of the Motor vehicle engine controls, as well as further assemblies (11, 12) execute the driving state special functions, such as Example of a traction control system, a Speed controller and / or an electronically controlled Automatic transmission.
Der Aufbau der ersten und zweiten Baugruppe soll im folgenden anhand der Figuren 2 und 3 näher erläutert werden.The structure of the first and second assembly should be in following will be explained in more detail with reference to Figures 2 and 3.
Die Figur 2 zeigt ein Blockschaltbild der ersten Baugruppe (3). Dieser Baugruppe werden die Signale von zwei mit dem Fahrpedal (1) verbundenen Positionssensoren (2a, 2b) zugeführt. Die Positionssensoren (2a, 2b) können beispielsweise als zwei Potentiometer oder als ein Potentiometer und ein Schalter ausgeführt sein, wobei der zweite Sensor (2b) zur Funktionsüberwachung des ersten Sensors (2a) herangezogen wird. Besonders vorteilhaft bezüglich einer großen Lebensdauer und einer geringen Störanfälligkeit ist es, wenn wenigstens einer der Fahrpedalpositionssensoren (2a, 2b) als kontaktloser Sensor ausgeführt ist.FIG. 2 shows a block diagram of the first assembly (3). This module receives the signals from two with the Accelerator pedal (1) connected position sensors (2a, 2b) fed. The position sensors (2a, 2b) can for example as two potentiometers or as one Potentiometer and a switch can be executed, the second sensor (2b) for function monitoring of the first Sensor (2a) is used. Particularly advantageous regarding a long life and a short one It is susceptible to failure if at least one of the Accelerator pedal position sensors (2a, 2b) as a contactless sensor is executed.
Die Signale der Fahrpedalpositionssensoren (2a, 2b) werden über Signalaufbereitungsbausteine (18a, 18b) einem Mikrocomputer (13a) zugeführt. Dieser Mikrocomputer steht im Datenaustausch mit einem Kommunikationscontroller (13b) bzw. übernimmt (bei entsprechender Rechenleistung des Mikrocomputers) selber diese Funktion.The signals from the accelerator pedal position sensors (2a, 2b) are via signal processing modules (18a, 18b) Microcomputer (13a) supplied. This microcomputer is in Data exchange with a communication controller (13b) or takes over (with corresponding computing power of the Microcomputers) themselves this function.
Der Kommunikationscontroller (13b) wiederum gibt und erhält über die Schnittstelle (14b) Daten von dem Kommunikationskanal oder dem Bussystem (9). Die Kommunikationsleitung (5) ist sehr einfach aufgebaut und kann über die Schnittstelle (14a) direkt vom Mikrocomputer (13a) angesteuert werden. Da die Schnittstelle (14b) die einzige Verbindung der Baugruppen (3, 4) zum Kommunikationskanal oder Bussystem (9) darstellt, muß zur Anpassung dieser Baugruppen (3, 4) an verschiedenartige Kommunikationskanäle oder Bussysteme lediglich eine Anpassung des Kommunikationscontrollers (13b) und/oder der Schnittstelle (14b) vorgenommen werden, was nur einen vergleichsweise geringfügigen Aufwand bedeutet. Die übrigen Bauteile beider Baugruppen (3, 4) sind dagegen universell verwendbar.The communication controller (13b) in turn gives and receives via the interface (14b) data from the Communication channel or the bus system (9). The Communication line (5) is very simple and can directly from the microcomputer via the interface (14a) (13a) can be controlled. Since the interface (14b) the only connection of the modules (3, 4) to Communication channel or bus system (9) must be Adaptation of these modules (3, 4) to different types Communication channels or bus systems only one Adaptation of the communication controller (13b) and / or the Interface (14b) can be made, which is only one comparatively minor effort means. The remaining Components of both assemblies (3, 4), however, are universal usable.
Zur Spannungsversorgung bzw. Spannungsstabilisierung weist die Baugruppe (3) einen Spannungsversorgungsbaustein (15) auf, welcher über den Zündschalter (17) an das Fahrzeugbordnetz (16) geschaltet ist.For power supply or voltage stabilization the assembly (3) a voltage supply module (15) which, via the ignition switch (17) to the Vehicle electrical system (16) is switched.
Die in der Figur 3 dargestellte zweite Baugruppe (4) weist einen zur ersten Baugruppe (3) vergleichbaren Aufbau auf. The second assembly (4) shown in FIG. 3 has a structure comparable to the first assembly (3).
Auch hier ist der zentrale Baustein ein Mikrocomputer (22). Dieser ist hier mit nur einem Schnittstellenbaustein (20) verbunden und stellt die Datenverbindung zur Kommunikationsleitung (5) her.Here, too, the central component is a microcomputer (22). This is here with only one interface module (20) connected and provides the data connection Communication line (5) ago.
Über diese Kommunikationsleitung (5) erhält die Baugruppe (4) Signale zur Betätigung des Stellgliedes (6). Andererseits gibt die Baugruppe (4) ebenfalls über die Kommunikationsleitung (5) Signale über die aktuelle Position des Stellgliedes (6) an die Baugruppe (3).The module receives this communication line (5) (4) signals for actuating the actuator (6). On the other hand, the assembly (4) is also on the Communication line (5) signals about the current position of the actuator (6) to the assembly (3).
Zur Betätigung des Stellgliedes (6) steuert und überwacht der Mikrocomputer (22) die steuerbare Spannungsversorgung (23) für den Aktuator (7) zur Betätigung des Stellgliedes (6). Der mit dem Stellglied (6) verbundenen Positionssensor (8) gibt Signale über die aktuelle Stellgliedposition über den Signalaufbereitungsbaustein (19) an den Mikrocomputer (22).Controls and monitors to actuate the actuator (6) the microcomputer (22) the controllable power supply (23) for the actuator (7) for actuating the actuator (6). The position sensor connected to the actuator (6) (8) transmits signals about the current actuator position the signal processing module (19) to the microcomputer (22).
Zum Abschluß soll die grundlegende Funktionsweise des erfindungsgemäßen Ansteuerungssystems anhand der Zeichnung näher erläutert werden.In conclusion, the basic functioning of the control system according to the invention with reference to the drawing are explained in more detail.
Der mindestens eine Fahrpedalpositionssensor (2, 2a, 2b) gibt ein der Betätigung des Fahrpedals (1) entsprechendes Signal an die erste Baugruppe (3), welche ein diesem Signal entsprechendes Signal oder Datum auf den Kommunikationskanal oder das Bussystem (9) gibt. Dieses Signal oder Datum gelangt so an die Baugruppen für die Motorsteuerung (10) und an die Baugruppen für die Fahrzustandssonderfunktionen (11, 12).The at least one accelerator pedal position sensor (2, 2a, 2b) gives a corresponding to the actuation of the accelerator pedal (1) Signal to the first module (3), which a this signal corresponding signal or date on the communication channel or the bus system (9) there. This signal or date gets to the modules for the engine control (10) and to the modules for the special driving state functions (11, 12).
In den Baugruppen für Fahrzustandssonderfunktionen (11, 12) werden aufgrund der Eingangsdaten dieser Funktionen der im Fahrpedalsignal enthaltene Fahrerwunsch interpretiert und in möglicherweise modifizierter Form auf dem Kommunikationskanal oder dem Bussystem weitergeleitet. Dieser Fahrerwunsch wird in der Motorsteuerungsbaugruppe (10) anhand von Kennlinien oder Kennfeldern bzw. Rechenvorschriften in ein Ansteuerungssignal zur Einstellung des Stellgliedes (6) umgerechnet.In the modules for special driving state functions (11, 12) are based on the input data of these functions Accelerator pedal signal interpreted driver request and in possibly modified form on the Communication channel or the bus system forwarded. This driver request is in the engine control module (10) based on characteristic curves or maps or Calculation rules in a control signal for adjustment the actuator (6) converted.
Dieses Anforderungssignal gelangt über den Kommunikationskanal oder das Bussystem (9) an die erste Baugruppe (3) welche ein diesem Anforderungssignal entsprechendes serielles Signal über die Kommunikationsleitung (5) an die zweite Baugruppe (4) weitergibt, welche wiederum daraufhin den Aktuator (7) des Stellgliedes (6) diesen Signalen entsprechend steuert.This request signal comes through the Communication channel or the bus system (9) to the first Module (3) which a this request signal corresponding serial signal via the Communication line (5) to the second module (4) passes on, which in turn then the actuator (7) of the Actuator (6) controls these signals accordingly.
Der Positionssensor (8) erzeugt ein Rückmeldesignal über die aktuelle Position des Stellgliedes (6), welches die zweite Baugruppe (4) über die Kommunikationsleitung (5) an die erste Baugruppe (3) zur überprüfung der Korrektheit der erfolgten Stellgliedbetätigung zurückmeldet.The position sensor (8) generates a feedback signal via the current position of the actuator (6), which is the second Module (4) via the communication line (5) to the first assembly (3) for checking the correctness of the after the actuator has been actuated.
Die Baugruppen (3, 4) beinhalten für das Fahrzeug besonders sicherheitsrelevante Aufgaben. Für einen überprüfbar sicheren Betrieb des Fahrzeugs können in den Programmen der Mikrocomputer (13a, 22) Funktionen zur gegenseitigen Überprüfung vorgesehen sein, wobei die Baugruppen (3, 4) zum Zweck dieser Überprüfung Prüfsignale über die Kommunikationsleitung (5) austauschen.The assemblies (3, 4) contain especially for the vehicle security-related tasks. Checkable for one safe operation of the vehicle can be found in the programs of the Microcomputers (13a, 22) functions for mutual Check may be provided, the modules (3, 4) for Purpose of this review test signals over the Exchange communication line (5).
Von besonderem Vorteil ist es hierbei, daß diese Prüfsignale nicht von der Belastung des Bussystems (9) beeinflußt werden können.It is particularly advantageous here that these test signals are not influenced by the load on the bus system (9) can.
In jeder der beide Baugruppen (3, 4) können zudem Notlauffunktionen implementiert sein, welche bei Ausfall von Baugruppen (3, 4, 10) oder Kommunikationsleitungen (5, 9) einen Notbetrieb des Fahrzeuges ermöglichen.In each of the two modules (3, 4) can also Emergency functions are implemented, which in the event of failure of Assemblies (3, 4, 10) or communication lines (5, 9) enable emergency operation of the vehicle.
Claims (20)
- System for driving a control element for adjusting the air supply to a motor-vehicle engine, with an accelerator pedal (1), with at least one accelerator-pedal position sensor (2, 2a, 2b) for sensing the current accelerator-pedal position and with a first electronic subassembly (3) for processing the signals of the at least one accelerator-pedal position sensor (2, 2a, 2b), and with a control element (6) for adjusting the air supply to a motor-vehicle engine, with an actuator (7) for actuating the control element (6), with a position sensor (8) for sensing the current position of the control element (6), with a second electronic subassembly (4), which drives the actuator (7) and evaluates or processes the signals of the position sensor (8), the first and the second electronic subassembly (3, 4) being connected by means of a communication line (5), and one of the subassemblies (3) being connected to at least one further subassembly (10) by a communication channel, characterized in that the second subassembly (4) transmits signals which represent the current position of the control element (6) to the first subassembly (3) via the communication line (5).
- Drive system according to Claim 1, characterized in that the first subassembly (3) is connected to the further subassembly (10).
- Drive system according to Claim 1, characterized in that the communication line (5) is embodied as a bidirectional data line.
- Drive system according to Claim 1, characterized in that the communication channel is embodied as a bidirectional bus system (9).
- Drive system according to Claim 1, characterized in that the at least one further subassembly is a subassembly (10) for controlling the motor-vehicle engine.
- Drive system according to Claim 5, characterized in that the subassembly for engine control (10) controls the ignition and injection of the motor-vehicle engine.
- Drive system according to Claim 5, characterized in that a characteristic curve, a characteristic map and/or a computational rule which represents the relationship between the position of the accelerator pedal (1) and the position of the control element (6) is stored within the subassembly for engine control (10).
- Drive system according to Claim 5 or 6, characterized in that special driving-state functions are also implemented in the subassembly for engine control (10).
- Drive system according to Claim 4, characterized in that at least one further subassembly (11, 12) which implements special driving-state functions is connected to the bus system (9).
- Drive system according to Claim 8 or 9, characterized in that the special driving-state functions include a speed regulator.
- Drive system according to Claim 8 or 9, characterized in that the special driving-state functions include a speed regulator.
- Drive system according to Claim 8 or 9, characterized in that one of the subassemblies is formed by an electronically controlled automatic transmission.
- Drive system according to Claim 1, characterized in that both the first subassembly (3) and the second subassembly (4) have a microcomputer component (13a, 22).
- Drive system according to Claim 13, characterized in that both microcomputer components (13a, 22) monitor each other.
- Drive system according to Claim 1, characterized in that the first subassembly (3) transmits signals which represent the position or change in position to be established by the control element (6) to the second subassembly (4) via the communication line (5).
- Drive system according to Claim 1, characterized in that emergency-running functions independent of the engine control (10) are implemented in the subassemblies (3, 4) in order to actuate the control element (6) in the case of a fault.
- Drive system according to Claim 1, characterized in that the first subassembly evaluates the signals of at least two sensors (2, 2a, 2b) coupled to the accelerator pedal (1).
- Drive system according to Claim 17, characterized in that at least one of the accelerator-pedal sensors (2, 2a, 2b) is embodied as a contactless sensor.
- Drive system according to Claim 1, characterized in that the position sensor (8) coupled to the control element (6) is embodied as a contactless sensor.
- Drive system according to Claim 1, characterized in that the accelerator-pedal sensors (2, 2a, 2b) form a constructional unit with the first subassembly (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4327455 | 1993-08-16 | ||
| DE4327455A DE4327455A1 (en) | 1993-08-16 | 1993-08-16 | System for controlling an actuator for adjusting the air supply to a motor vehicle engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0639706A2 EP0639706A2 (en) | 1995-02-22 |
| EP0639706A3 EP0639706A3 (en) | 1998-05-13 |
| EP0639706B1 true EP0639706B1 (en) | 2000-12-13 |
Family
ID=6495270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94112010A Revoked EP0639706B1 (en) | 1993-08-16 | 1994-08-02 | System for the control of an actuator adjusting the air supply of a vehicle engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0639706B1 (en) |
| DE (2) | DE4327455A1 (en) |
| ES (1) | ES2154278T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19522993A1 (en) * | 1995-06-24 | 1997-01-02 | Abb Daimler Benz Transp | Vehicle guidance system |
| US5673668A (en) * | 1996-08-05 | 1997-10-07 | Ford Global Technologies, Inc. | Method and apparatus for electronic throttle monitoring |
| DE19744039A1 (en) * | 1997-10-06 | 1999-04-08 | Mannesmann Vdo Ag | Monitoring procedure for default values for an engine control electronics |
| DE19750736A1 (en) * | 1997-11-15 | 1999-05-20 | Volkswagen Ag | Control system for driver-activated motor vehicle modules |
| JP2003515697A (en) | 1999-11-30 | 2003-05-07 | シーメンス アクチエンゲゼルシヤフト | Control device for internal combustion engine, control unit for adjusting element of internal combustion engine, and control method for internal combustion engine |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412318A1 (en) * | 1984-04-03 | 1985-10-10 | Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt | Reference element of a device for adjusting the speed of travel of a vehicle |
| US4779696A (en) * | 1986-07-24 | 1988-10-25 | Mazda Motor Corporation | Vehicle slip control apparatus |
| DE3700986C2 (en) * | 1987-01-15 | 1995-04-20 | Bosch Gmbh Robert | Device for monitoring a computer system with two processors in a motor vehicle |
| ES2019672B3 (en) * | 1987-04-09 | 1991-07-01 | Siemens Ag | INSTALLATION FOR THE CONTROL OF THE SUCTION AIR IN AN INTERNAL COMBUSTION ENGINE |
| DE3814702A1 (en) * | 1987-11-12 | 1989-05-24 | Bosch Gmbh Robert | DEVICE FOR ACTUATING THE THROTTLE VALVE OF AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR A MOTOR VEHICLE |
| DE3803078C2 (en) * | 1988-02-03 | 2000-11-02 | Bosch Gmbh Robert | Method and device for monitoring the position of an electrical actual position transmitter |
| JPH085347B2 (en) * | 1988-04-28 | 1996-01-24 | 三菱電機株式会社 | Vehicle constant-speed traveling device |
| JPH01162055U (en) * | 1988-04-30 | 1989-11-10 | ||
| JP2748488B2 (en) * | 1989-01-18 | 1998-05-06 | 株式会社デンソー | Throttle opening control device |
| JPH02246841A (en) * | 1989-03-17 | 1990-10-02 | Hitachi Ltd | Control device and method thereof for automobile |
| US5048481A (en) * | 1989-12-15 | 1991-09-17 | Eaton Corporation | Throttle actuator safety method for automated transmission |
| JP2855280B2 (en) * | 1990-02-22 | 1999-02-10 | マツダ株式会社 | Vehicle slip control device |
| DE4015415B4 (en) * | 1990-05-14 | 2004-04-29 | Robert Bosch Gmbh | Device for detecting a variable operating parameter |
| DE4120419C2 (en) * | 1990-06-21 | 1995-01-26 | Mazda Motor | Traction control device for a motor vehicle |
| DE4024018A1 (en) * | 1990-07-28 | 1992-01-30 | Bosch Gmbh Robert | Accelerator pedal position indicator - derives position signal from change in resistance of strip which expands as pedal moves |
| DE4037092A1 (en) * | 1990-11-22 | 1992-05-27 | Zahnradfabrik Friedrichshafen | METHOD FOR CONTROLLING THE TORQUE OF AN INTERNAL COMBUSTION ENGINE |
| DE4040219A1 (en) * | 1990-12-15 | 1992-06-17 | Bosch Gmbh Robert | Measurement system for motor vehicle e.g. for accelerator pedal position - has variable end values in electronic control system for more comfortable and reliable operation |
| DE4133268A1 (en) * | 1991-10-08 | 1993-04-15 | Bosch Gmbh Robert | DEVICE FOR CONTROLLING THE DRIVE POWER OF A VEHICLE |
| DE4220246A1 (en) * | 1992-06-20 | 1993-12-23 | Bosch Gmbh Robert | Control device for vehicle throttle-setting mechanism - has position of throttle indicated by measuring element and stepping counter compared with accelerator pedal position for plausibility check |
| DE4220247A1 (en) * | 1992-06-20 | 1993-12-23 | Bosch Gmbh Robert | Control device for vehicles |
-
1993
- 1993-08-16 DE DE4327455A patent/DE4327455A1/en not_active Withdrawn
-
1994
- 1994-08-02 ES ES94112010T patent/ES2154278T3/en not_active Expired - Lifetime
- 1994-08-02 DE DE59409606T patent/DE59409606D1/en not_active Revoked
- 1994-08-02 EP EP94112010A patent/EP0639706B1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| DE59409606D1 (en) | 2001-01-18 |
| ES2154278T3 (en) | 2001-04-01 |
| EP0639706A3 (en) | 1998-05-13 |
| DE4327455A1 (en) | 1995-02-23 |
| EP0639706A2 (en) | 1995-02-22 |
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