EP1507966A1 - Verfahren und vorrichtung zur regelung einer betriebskenngrösse in einem kraftfahrzeug - Google Patents
Verfahren und vorrichtung zur regelung einer betriebskenngrösse in einem kraftfahrzeugInfo
- Publication number
- EP1507966A1 EP1507966A1 EP03724891A EP03724891A EP1507966A1 EP 1507966 A1 EP1507966 A1 EP 1507966A1 EP 03724891 A EP03724891 A EP 03724891A EP 03724891 A EP03724891 A EP 03724891A EP 1507966 A1 EP1507966 A1 EP 1507966A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- variable
- controller
- operating state
- control
- starting
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 101100002669 Arabidopsis thaliana ADT1 gene Proteins 0.000 description 1
- 101100002673 Arabidopsis thaliana ADT3 gene Proteins 0.000 description 1
- 101100463170 Schizosaccharomyces pombe (strain 972 / ATCC 24843) pdt1 gene Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/002—Electric control of rotation speed controlling air supply
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/16—Introducing closed-loop corrections for idling
Definitions
- the invention relates to a method and a device for controlling an operating parameter in a motor vehicle according to the preambles of the independent claims.
- a method and a device for controlling an operating parameter in a motor vehicle is known for example from DE 41 12 848.
- a speed control is described there, in which a controller specifies a first variable and a controller specifies a second variable.
- the first variable is the output signal of the actual idle controller, which is based on the control deviation, i.e. H. the difference between the setpoint and the actual value for the speed.
- the second variable is a variable that depends on the accelerator pedal position or the driver's request and is superimposed on the first variable. This means that the controller intervention of the idle controller is applied to the control variable from the accelerator pedal. Starting from the empty gas run, the driver's intervention increases the intervention of the idle controller. This avoids a dead travel on the accelerator pedal, particularly in the case of small accelerator pedal positions.
- a controller specifies a first variable and a control system, a second variable, with a manipulated variable starting from the first and the second variable with a first variable in at least one first operating state Regulation is specified, and in at least one second operating state the manipulated variable, starting from the first and the second quantity, is specified with a second regulation, a smooth transition between the different operating states is possible.
- the procedure is preferably used for a controller which regulates the speed of the internal combustion engine to a setpoint.
- the procedure can also be used with other controllers.
- the second variable characterizes the driver's request. This means that this second variable is specified based on the driver's request.
- the output signal of an operating element, in particular of the accelerator pedal, the output signal of a vehicle speed controller or the output signal of a vehicle speed limiter can be used to form this variable.
- the manipulated variable is formed by adding the first and the second variable.
- the manipulated variable is started of the first and the second variable formed by a maximum selection or a minimum selection.
- start values are determined for the controller during the transition between the operating states.
- FIGS. 2 and 3 different configurations of the method according to the invention.
- FIG. 1 the device according to the invention is shown as an example.
- a controller is labeled 100. This is supplied with a signal from a specification 110 which characterizes the control deviation of a variable to be controlled.
- the output signal which is also referred to as a control intervention or first variable U, from the controller 100 reaches a maximum selection 120 on the one hand and a first input of a switching means 130 on the other hand.
- a controller 140 which specifies a control variable S, which is also referred to as a second variable.
- the control variable S reaches the maximum selection 120, a node 150 and a node 160.
- the output signal of the maximum selection 120 also reaches the second input of the node 150.
- the output signal T of the node 150 reaches a second input of the switching means 130
- Switching means 130 is controlled by a control 170.
- the output signal V of the switching means 130 reaches a second input of the node 160.
- the output signal Y of the node 160 is applied to an actuator 180.
- the regulator 100 is preferably a speed regulator that regulates the speed of the internal combustion engine to a predetermined value.
- the procedure according to the invention is independent of the behavior of the controller, which preferably has PI, PID and / or PDT1 behavior.
- the procedure can also be used with other controllers, such as first-order or higher-order state controllers or fuzzy controllers.
- the specification 110 provides a signal that corresponds to the system deviation, i. H. corresponds to the difference between the setpoint for the speed and the actual speed signal.
- the controller forms an output signal U.
- the controller 140 supplies a control variable S. It is preferably provided that this control variable S represents the driver's request, i. H. this variable S is preferably predefined on the basis of the accelerator pedal position and further operating parameters such as the rotational speed. In particular, a so-called driving behavior or an accelerator pedal map or several such maps are used for this purpose.
- Both the first and the second variable are passed to the maximum selection 120.
- the larger of the two signals then arrives at node 150, where the control variable S is subtracted from this signal.
- the intermediate variable T thus formed then reaches the second input of the switching means 130.
- the first variable U reaches the first input of the switching means 130.
- the output signal of the controller U or the intermediate variable T thus reaches the node 160. where this is added to the control variable S to form the manipulated variable.
- the switching means 130 If the switching means 130 is in the position shown, the first variable and the second variable S are additively linked to one another. I.e. the manipulated variable is obtained by adding the first variable U and the second variable S.
- the switching means 130 If the switching means 130 is in the position shown in broken lines, the signal U of the controller is selected as the manipulated variable Y. If, on the other hand, the control variable S is larger than the signal U, the control variable S is selected as the control variable UY. By actuating the switching means 130, the regulation with which the manipulated variable Y is formed on the basis of the first and second variable can be selected.
- the control 170 controls the switching means 130 accordingly depending on the operating state of the internal combustion engine. For example, it can be provided if the Controller 100 works as an idle controller that the sizes are additively superimposed. In this case, the formwork means 130 are in the position shown. If, on the other hand, the controller acts as a vehicle speed controller, the control 170 brings the switching means into the position shown in dashed lines. This means, depending on the need for the output signal of the controller of the control variable additive or linked via a maximum selection.
- the actuator 180 is preferably an actuator for influencing the power output of an internal combustion engine. This is, for example, the throttle valve of a gasoline-powered internal combustion engine and a quantity-specific actuator which determines the amount of fuel injected in a diesel or a direct-injection internal combustion engine.
- the described method of structural changeover makes it possible to go directly between idling operation and the operating states, vehicle speed control and / or working speed control.
- Switching means 130 and control 170 can be used to switch between additive activation in first operating states, such as speed control in idle mode, and activation via maximum limitation in second operating states, such as vehicle speed control or working speed control. This measure alone enables a jump-free switchover between two control structures. This means that the manipulated variable Y does not change when the controller structure is changed.
- the controller is initialized in order to avoid jumps in the manipulated variable Y during the structural switching. It is provided that the controller 100 is initialized in such a way that the output variable U is selected such that the same manipulated variable Y results before and after the switchover. This means, starting from the old manipulated variable Y (K - 1) that existed before the switchover, the control variable S (K - 1) before the switchover and the old variable U (K - 1) that existed before the switchover the new output variable of the controller U (K) is calculated.
- the intermediate variable T (K) is calculated in an intermediate step.
- the new value for the intermediate variable T (K) is calculated.
- the starting value U (K) is calculated on the basis of this variable.
- FIG. 2 shows a flow chart to clarify the procedure according to the invention.
- the control variable S is calculated.
- the initialization values of the controller 100 are calculated.
- the starting value UK of the output signal of the controller 100 is calculated, which should be present after the switchover. As stated above, this is done on the basis of the type of switchover and the sizes specified above.
- controller 100 is initialized accordingly.
- the new output variable of the controller U (K + 1) is calculated.
- the activation variable V and in step 250 the manipulated variable Y are calculated.
- step 200 again.
- the initialization values are calculated for each Program run, even if there is no structure changeover. If there is no structural changeover, the output variable U of the controller does not change due to the calculation in step 210.
- the new controller output variable is also calculated each time the program is run. That is, there is also a recalculation when the structure is switched.
- FIG. 2 A further embodiment is shown in FIG. This embodiment differs essentially from FIG. 2 in that a query 300 is carried out after step 200, which checks whether a structure changeover, i. H. a transition from the first to the second or a transition from the second to the first operating state has taken place. If such a transition has not taken place, only step 230 is processed. If such a transition has taken place, steps 210, 220 and 230 are processed accordingly, as in FIG. This means that the initialization values are only calculated if the structure is changed.
- the output variable of the controller U is recalculated regardless of whether there has been a structural conversion, i. H. the controller is always dynamically active.
- step 230b is omitted, i. H.
- controller is recalculated only if there is no structural changeover.
- the start values for initializing the controller are only calculated when the structure is switched.
- the output signals of the UK + 1 controller are only calculated if there is no changeover. This embodiment has the advantage that the computer load is significantly reduced.
- a minimum selection can be provided instead of the maximum selection 120. This is particularly suitable if the controller carries out a final speed control or a maximum speed limit. Furthermore, it can alternatively be provided that the connection acts on the control variable S with a negative sign.
- the method is not limited to speed controls. It can also be used with all other regulations.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10221380 | 2002-05-14 | ||
| DE2002121380 DE10221380A1 (de) | 2002-05-14 | 2002-05-14 | Verfahren und Vorrichtung zur Regelung einer Betriebskenngröße in einem Kraftfahrzeug |
| PCT/DE2003/001520 WO2003095816A1 (de) | 2002-05-14 | 2003-05-12 | Verfahren und vorrichtung zur regelung einer betriebskenngrösse in einem kraftfahrzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1507966A1 true EP1507966A1 (de) | 2005-02-23 |
| EP1507966B1 EP1507966B1 (de) | 2005-11-30 |
Family
ID=29285375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03724891A Expired - Lifetime EP1507966B1 (de) | 2002-05-14 | 2003-05-12 | Verfahren und vorrichtung zur regelung einer betriebskenngrösse in einem kraftfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1507966B1 (de) |
| DE (2) | DE10221380A1 (de) |
| WO (1) | WO2003095816A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112848C2 (de) * | 1991-04-19 | 2001-11-15 | Bosch Gmbh Robert | System zur Regelung der Leerlaufdrehzahl einer Brennkraftmaschine |
| DE59204860D1 (de) * | 1992-10-19 | 1996-02-08 | Siemens Ag | Verfahren zum Betrieb einer Brennkraftmaschine im Vollastbetrieb |
| DE19546108A1 (de) * | 1995-12-11 | 1997-06-12 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Verstelleinrichtung in einem Fahrzeug |
| DE19748128A1 (de) * | 1997-10-31 | 1999-05-06 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung eines Stellelements einer Antriebseinheit |
-
2002
- 2002-05-14 DE DE2002121380 patent/DE10221380A1/de not_active Withdrawn
-
2003
- 2003-05-12 WO PCT/DE2003/001520 patent/WO2003095816A1/de not_active Ceased
- 2003-05-12 EP EP03724891A patent/EP1507966B1/de not_active Expired - Lifetime
- 2003-05-12 DE DE50301811T patent/DE50301811D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03095816A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003095816A1 (de) | 2003-11-20 |
| DE50301811D1 (de) | 2006-01-05 |
| DE10221380A1 (de) | 2003-11-27 |
| EP1507966B1 (de) | 2005-11-30 |
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