DE102005050753A1 - Method and device for controlling and / or regulating an automatic system of a motor vehicle - Google Patents

Abstract

The invention relates to a method and a device for controlling and / or regulating an automatic system (1) of a motor vehicle using detection data of at least one detection system (2) for detecting a route lying in front of the vehicle. According to the method, it is provided that the detection data are combined to form a driving resistance profile in the area of a route in front of the motor vehicle in order to act on the automatic system (1) in such a way that a suitable strategy for covering the route in front of the vehicle is developed.

Description

The The invention relates to a method for controlling and / or regulating an automatic system of a motor vehicle according to the preamble of Patent claim 1, and an apparatus thereto according to the preamble of the claim 12th

automatic Systems or automatic control and / or regulating devices in the drive train of a vehicle are always opposite to the driver with the Disadvantage that this is the distance ahead of the vehicle not knowing. There are already many methods and devices known, this disadvantage by using an autonomous position determination of the vehicle, e.g. using the Global Positioning System (GPS), and to compensate for the calculation of the distance ahead of the vehicle. Furthermore There are optical or radar or sonar based systems which are able to track in front of the vehicle to capture and for the autonomous operation of control and regulation systems of the Vehicle to use.

From the DE 37 00 552 A1 a method for the output of Wegeinformätionen for the driver of a land vehicle is known in which stored in addition to stored geographic data of an electronic road map safety information of certain sections of road and output when reaching the path sections. With this method, the driver receives safe, independent of environmental and traffic influences route information to improve driving safety. Furthermore, it has been proposed in this publication also evaluates driving and environmental data, with sensors and / or an input terminal are provided, via which the current driving and environmental data are fed to a comparator.

Out the stored safety-related information can by means of a converter circuit recommended driving data won and also supplied to the comparator become. By comparing both information can be exceeded given limits to the driver, for example to reduce the driving speed. It can also control commands to vehicle units be passed on, for example, at a slope to switch an automatic transmission to a lower gear ratio. Indeed are for this Road network data required, to determine in advance empirically, for example, by experimental vehicles are in the form of an electronic digitized road map to be saved.

To solve this task discloses the DE 196 00 734 A1 a method for controlling aggregates and / or systems of a motor vehicle by processing information for detecting the driving environment, the driving state, for positioning or the like, which links current data and processed into a manipulated variable, with the at least one unit of the vehicle in its operation can be influenced. However, these current data can vary in time so that a constant and rapid adjustment of the manipulated variable is required. This, combined with a certain reaction time of the system in question, can lead to effects which can adversely affect the safety, economy and efficiency and comfort of the vehicle. It can also come to upshifts in curves and downhill to undesirable vibrations in the drive train.

So open more and more possibilities, the Disadvantage of automatic systems to compensate for the driver. Together, all these systems have the feature that these are from the derive strategies that are appropriate, the to master the route ahead of the vehicle as efficiently as possible. The term efficiency can be as fast as possible, as possible athletic, preferably economical and the like.

To a really efficient control and / or regulation of an automatic However, systems in a powertrain of a motor vehicle are alone such data insufficient, which lead only to the knowledge of which History has the route in front of the vehicle. Much more important is the knowledge about which driving resistance changes can be expected along a route ahead.

In front In this background, the invention is based on the object Method and device for controlling and / or regulating a automatic system of a motor vehicle using Detection data of at least one detection system for determination imagine a distance ahead of the vehicle, with the driving resistance changes recorded in various distances in front of the vehicle and to control and / or Control of automatic systems of the motor vehicle used become.

The solution This object is apparent from the features of the independent claims 1 and 12, while advantageous embodiments and developments of the invention the Subclaims removable are.

Of the Invention is based on the finding that the mentioned disadvantage the known automatic systems in motor vehicles to the driver is avoided by changes in driving resistance for the vehicle ahead Track detected or determined and for control and / or regulation This automatic system is used. By this procedure let yourself For example, the shifting comfort in a shift operation of an automatic transmission significantly improve in a motor vehicle.

Under an "automatic System "in or on a motor vehicle is in connection with the invention in a first variant, the sum of all control and regulation means for the Aggregates and devices of the vehicle drive train understood. According to one In the second variant, the term "automatic system" includes a separate one Sensory data acquisition and processing means, which with drive train-specific control and regulating devices in signal connection is. These powertrain-specific control and regulating devices are For example, a transmission control device and a motor control device.

The Invention is according to the features of Claim 1 from a method of control and / or regulation an automatic system of a motor vehicle using of detection data of at least one detection system for detection a lying in front of the vehicle track. It is intended that the detection data to a driving resistance profile in the area summarized a predetermined distance in front of the motor vehicle to affect the automatic system in such a way that a suitable strategy for coping the road ahead of the vehicle is developed.

It has turned out to be a really efficient controller and / or regulation of an automatic system of a motor vehicle Drag resistance development on the track in front of the vehicle relevant is. Moves the vehicle on a slope, so it must be decided whether the automatic transmission to carry out a downshift is to be controlled, for example, the effect of the brakes to increase the vehicle or whether the current gear is to be maintained, because in example 20 meters away the slope goes into a plane. If the level goes back down another 10 meters then the downshift would be over the right decision.

The Data from different acquisition systems or sensors are included to a driving resistance profile for a defined distance ahead (e.g., 2 km) in front of the vehicle summarized. This imaginary, The vehicle is anticipatory and constantly updated driving resistance profile then provided to the automatic system to be optimal appropriate strategy for coping develop the route ahead of the vehicle.

One important advantage of this approach is that so immediate imminent, medium-term entering, but also only at a greater distance Effective driving resistance changes for the controller and / or regulation of autonomously operating vehicle systems can be. For example, if the information about the current position and Vehicle speed taken into account that's how it is automatic system long before the vehicle is the corresponding one Section travels, which driving resistance acts when on the vehicle.

Preferably the automatic system of the motor vehicle will respond in response the appropriate strategy so controlled that a transmission control module that for the most favorable transmission ratio or the cheapest Select gear and actuators of the automatic transmission in this regard.

indicated the so-called leading driving resistance, for example, a kilometer-long slope, so in the automatic transmission is a suitable, chosen comparatively small gear. this leads to in the result to a forward-looking and on the resistance development adapted switching strategy for the automatic transmission, through which comfort increasing the switching frequency reduced and pendulum circuits are avoided.

In an alternative embodiment an engine control unit of the motor vehicle in response to the identified appropriate strategy with regard to the predetermined driving resistance profile of the advance lying route so reparameterized that the drive motor the motor vehicle as possible low emissions and low consumption the next judged next Streckabschnitt mastered. Thus, also in this embodiment a maximum efficient driving style are controlled.

In a further alternative embodiment of the method according to the invention, the automatic system of the motor vehicle is controlled and / or regulated in response to the determined appropriate strategy with regard to the preceding driving resistance course, that an additional unit in the motor vehicle is switched on or off. Such an additional unit, for example, an air conditioner or also be a drive unit. Likewise, the additional unit can be reparameterized or its power output reduced or increased.

In a particular embodiment can For example, certain aggregates in hybrid vehicles due of knowledge about the current or / and expected driving resistance switched off or changed in their effectiveness. So, for example an existing in the hybrid vehicle electric machine at one expected big Fahrwegsteigung connected as a drive motor in addition to an internal combustion engine and operated. In another case, this electric machine can with heavy track gradient be switched into their regenerative function, so that, braking the vehicle, gaining electrical energy and into the Vehicle electrical system feeds.

Preferably Such values are optimal for determining a running resistance appropriate driving or control strategy, with which the automatic system of the motor vehicle so operable is that the distance ahead of the motor vehicle in response on input parameters of a user as fast as possible and / or possible athletic or as energy efficient as possible overcome becomes. In this embodiment can Wishes the driver with regard to the desired driving advantageous taken into account become.

Preferably In particular, those are used to determine a road resistance-optimal strategy Determines values with which a consumption and / or pollutant reduction, for example a reduction in CO2 through improved drive management is achieved.

Favorited As a detection system, at least one position detection system for the vehicle used. In a preferred embodiment, as a position detection system a global positioning system Used (GPS). This system is a world-wide exciting satellite system for high-precision positioning, navigation and Time distribution. A GPS receiver can be out of the same time received signals from at least three satellites the signal propagation times calculate and from this his position in principle to a few centimeters determine exactly. With a fourth satellite can be under Utilizing the Doppler effect additionally the speed and direction of movement of a GPS receiver.

In an alternative embodiment a data storage used in which track sections stored become. For this purpose, in a preferred embodiment, predetermined road courses and / or topographical data used as sections of track. Thus, will the driving resistance of individual sections, similar to road courses or topographic data, map.

there proves to be advantageous that not every control and control device in the powertrain must perform its own driving resistance calculation. The mapped information only need with each vehicle-specific data, such as current mass, more specific Rolling resistance or aerodynamic drag of the vehicle combined and be summarized to a total driving resistance.

to solution The task is also a device for control and / or regulation of an automatic system of a motor vehicle Use of acquisition data of at least one acquisition system for detecting a distance ahead of the vehicle and for issuing Detection data provided in response to this detection.

According to the invention contains the automatic system further comprises a computation unit for combining data on a resistance profile in the area of a specified Track in front of the motor vehicle in response to the detection data and an actuator for engaging the automatic one System that provides a suitable strategy for coping with the front of the vehicle lying route can develop.

These Device proves to be advantageous in that the data various detection systems to a driving resistance profile for a defined Track be summarized in front of the vehicle. This imaginary, the Vehicle anticipatory driving resistance profile, then can the automatic System or the back to it Control and / or control devices Help find a suitable strategy for coping with the front of the vehicle developing route.

Of the Advantage of this device is that so immediately imminent, medium term, but also effective only at a larger distance Driving resistance changes calculated and for the optimal control and / or Regulation can be used. If the information about current position and vehicle speed taken into account be, that knows respective automatic system long before the vehicle corresponding section, which driving resistance is to be overcome when.

Preferably, the automatic Sys TEM of the vehicle, a transmission, in particular an automatic transmission, wherein the actuator for setting a suitable transmission ratio or gear of the automatic transmission is formed.

alternative contains the automatic system comprises at least one motor, wherein the actuator is designed to reparameterize the at least one motor. Alternative contains the automatic system an additional Aggregate, wherein the actuator for switching on or off or Change the effectiveness of this additional Aggregate is formed. This additional aggregate can be an electric machine be in a hybrid vehicle in addition to or as an alternative to a designed as a main drive engine internal combustion engine to cope the determined driving resistance profile of the travel motor or can be operated as a generator as well as switched on.

In a preferred embodiment contains the detection system is a position detection system. Preferably the position detection system is a GPS system. Alternatively or Additive contains the detection system a data storage, in which sections are pre-stored. Preferably, the route sections are predetermined Road courses and / or topographical data.

The invention can be further explained with reference to an embodiment. For this purpose, the description is accompanied by a drawing. In this shows 1 a schematic structure of an automatic system according to the invention to a drive train of a motor vehicle.

This automatic system 1 is initially equipped with an input side for receiving physical readings and data from a detection system 2 be provided for detecting a distance ahead of the vehicle. In this embodiment, the detection system is 2 designed as a position detection system. More specifically, the detection system includes a GPS sensor of a GPS system. In addition, the detection system 2 Have further sensors, with the aid of the driving resistance course along a lying in front of the vehicle track can be determined.

The with the detection system 2 determined acquisition data become a calculation unit 3 for summarizing data supplied to a driving resistance profile in the range of the specified distance in front of the motor vehicle. This calculation unit 3 calculates and determines values with which the automatic system 1 is controlled such that the distance lying in front of the motor vehicle in response to input parameters of a user as fast as possible and / or as sporty as possible or as economical as possible.

As a result, in this embodiment of the invention, a factor is calculated in each case which is an operating situation-appropriate parameter for whether an automatic transmission 4 and / or a clutch 5 to be acted upon. In addition, a factor can be calculated, which is an operating situation-appropriate characteristic for whether an engine 6 , For example, at least one vehicle drive motor to be acted upon.

Thus, it is possible, for example, that in a hybrid vehicle in the knowledge of a vehicle located in front of the road with high driving resistance in this located electric machine is switched on for an electric motor operation, so serving as a drive motor internal combustion engine 6 assist in propulsion of the vehicle.

The respective parameters for controlling and / or regulating the transmission 4 and / or the clutch 5 be in a clutch and transmission control module 7 created while the respective parameters for controlling and / or regulating the at least one motor 6 in an engine control module 8th be determined.

The parameters for controlling and / or regulating the automatic transmission 4 be from an interface 9 from via a data or control line 10 to an actuator 11 on the automatic transmission 4 transfer. The parameters for controlling and / or regulating the clutch 5 be from an interface 12 from via a data or control line 13 to an actuator 14 (For example, a piston-cylinder arrangement) on the clutch 5 transfer. Finally, the parameters for controlling and / or regulating the at least one engine 6 from an interface 15 from via a data or control line 16 to an actuator 17 at the engine 6 transfer. The aforementioned adjusting devices are designed, for example, as pressure-actuated actuators.

1

automatically system

2

acquisition system

3

calculation unit

4

automatic transmission

5

clutch

6

Engine, Main propulsion engine, internal combustion engine

7

clutch and transmission control module

8th

Engine Control Module

9

interface

10

Dates- or control line

11

actuator on the gearbox

12

interface

13

Dates- or control line

14

actuator at the clutch

15

interface

16

Dates- or control line

17

locking device at the engine

Claims (20)

Method for controlling and / or regulating an automatic system ( 1 ) of a motor vehicle using detection data of at least one detection system ( 2 ) for detecting a distance ahead of the vehicle, characterized in that the detection data are combined to form a driving resistance profile in the region of a line in front of the motor vehicle in order to access the automatic system ( 1 ) in such a way that an appropriate strategy for managing the ahead of the vehicle route is developed. Method according to claim 1, characterized in that the automatic system ( 1 ) is controlled in response to the appropriate strategy such that in an automatic transmission ( 4 ) of the automatic system ( 1 ) a suitable gear ratio is set. Method according to Claims 1 and 2, characterized in that the automatic system ( 1 ) is controlled in response to the appropriate strategy such that an engine ( 6 ) of the automatic system ( 1 ) is reparameterized. Method according to at least one of the preceding claims, characterized in that the automatic system ( 1 ) is controlled in response to the appropriate strategy such that an additional aggregate in the automatic system ( 1 ), reparameterized, reduced in its power output or increased or disabled. A method according to claim 4, characterized in that for overcoming the preceding driving resistance, an electric machine is switched on or off or changed in their effectiveness, and in the switched-on state by an electric motor, a main drive motor ( 6 ) is drivingly assistive motor operated, or operated as a generator. Method according to one of the preceding claims, characterized in that values are determined for the suitable strategy with which the automatic system ( 1 ) is controlled and / or regulated so that the distance lying in front of the motor vehicle in response to input parameters of a user as fast as possible and / or as sporty as possible or as economical as possible. Method according to Claim 6, characterized that values are determined to determine the appropriate strategy, with which a consumption and / or pollutant reduction by an improved drive management is achieved. Method according to at least one of the preceding claims, characterized in that as a detection system ( 2 ) at least one position detection system is used. Method according to claim 8, characterized in that that a GPS system is used as the position detection system. Method according to claim 8, characterized in that as detection system ( 2 ) a data memory is used, in which route sections are pre-stored. Method according to claim 10, characterized in that that predetermined road courses and / or Topographical data can be used as sections. Device for controlling and / or regulating an automatic system ( 1 ) of a motor vehicle using detection data of at least one detection system ( 2 ) for detecting a distance ahead of the vehicle and for outputting detection data in response to the detection, characterized in that the automatic system ( 1 ) a calculation unit ( 3 ) for summarizing data on a driving resistance profile in the region of a line in front of the motor vehicle in response to the detection data and an actuator ( 7 . 8th ) for such intervention on the automatic system ( 1 ) indicates that a suitable strategy for managing the route ahead of the vehicle is developable. Device according to claim 12, characterized in that the automatic system ( 1 ) an automatic transmission ( 4 ), wherein the actuator ( 7 ) for setting a suitable transmission ratio of the transmission ( 4 ) is trained. Device according to claim 12, characterized in that the automatic system ( 1 ) at least one engine ( 6 ), wherein the actuator ( 8th ) for reparameterizing the motor ( 6 ) is trained. Device according to claim 12, characterized in that the automatic system ( 1 ) one contains additional aggregate, the actuator ( 8th ) is designed to turn on or off or to change the effectiveness of the additional unit. Device according to claim 15, characterized in that that extra Aggregate as an electric motor or generator operable electric machine is trained. Device according to claim 12, characterized in that the detection system ( 2 ) contains a position detection system. Device according to claim 17, characterized in that that the position detection system is a GPS system. Device according to claim 17, characterized in that the detection system ( 2 ) contains a data memory in which route sections are pre-stored. Device according to claim 19, characterized in that the route sections have predetermined road courses and / or topographical data are.