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

Abstract

The invention relates to a method and apparatus for controlling and / or regulation of an automatic system (1) of a motor vehicle using detection data of at least one detection system (2) for detecting a front of the vehicle route. According to the method it is provided that the detection data are combined to a driving resistance profile in the area of ​​a track in front of the motor vehicle to act on the automatic system (1) such that is developed a suitable strategy for tackling the route ahead of the vehicle.

Description

• The invention relates to a method for controlling and / or regulation of an automatic system of a motor vehicle according to the preamble of claim 1, and an apparatus therefor according to the preamble of patent claim 12.
• Automatic systems or automatic control and / or regulating devices in the drive train of a vehicle are always fraught with respect to the driver, with the disadvantage that it does not know the route ahead of the vehicle. There are already many methods and devices known for this disadvantage through the use of an autonomous position determination of the vehicle, for example by means of the Global Positioning System (GPS), and to compensate for the calculation of the route ahead of the vehicle. In addition, there are optical and radar or sonar-based systems, which are able to detect the route ahead of the vehicle and to be used for the autonomous work of control and regulation systems of the vehicle.
• From the DE 37 00 552 A1 discloses a method for outputting Wegeinformätionen for the driver of a land vehicle, in which in addition to stored geographic data of an electronic map security-relevant information of certain road segments stored and output when reaching the path sections. With this method, the driver is safe, environmental and traffic impacts independent path information to improve driving safety. Further, it has been proposed in this publication, must also be made driving and environmental data values, sensors and / or an input terminal are provided, via which the current driving and environmental data to a comparator are supplied.
• recommended vehicle data can be obtained and also supplied to the comparator by means of a conversion circuit from the stored security-related information. By comparing the two information can be when exceeding specified limits Notes issue to the driver, for example to reduce the driving speed. It can be passed on to vehicle units and positioning commands, for example, at a downhill slope to switch an automatic transmission into a lower gear. However, this road network data are required which are previously to be determined empirically for example by test vehicles to be stored in the form of an electronic digitized road map to.
• To achieve this object reveals the DE 196 00 734 A1 a method for controlling of aggregates and / or systems of a motor vehicle by processing of information for detecting the driving environment of the driving state, for determining the position or the like which current data linked 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 such that a constant and rapid adaptation of the manipulated variable is required. This can be combined with a certain response time of the system in question Effects due to the safety, economy and efficiency and may adversely affect the comfort of the vehicle soft. It can also come in the drive train in to upshifts in bends and downhill to undesirable vibrations.
• This opens up more and more ways to offset the disadvantage of automatic systems to the driver. Together, all these systems have the feature that they derive strategies from the data available that are suitable to cover the distance ahead of the vehicle as efficiently as possible. The term efficiency may thereby represent as soon as possible, preferably sporty, economical as possible, and the like.
• To a truly effective control and / or regulation of an automatic system in a drive train of a motor vehicle, however, such data alone are insufficient, which only lead to the realization what course has the track located in front of the vehicle. More important is the knowledge of which road load changes are to be expected along a lying ahead distance.
• Against this background the invention has for its object to provide a method and apparatus for controlling and / or regulation of an automatic system of a motor vehicle using detection data of at least a detection system for determining ahead of the vehicle track with the running resistance changes in various distances in front of are recorded the vehicle and used to control and / or regulation of automated systems of the motor vehicle.
• The solution of this object is achieved by the features of the independent claims 1 and 12, while advantageous embodiments and further developments of the invention are found in the subclaims.
• The invention is based on the recognition that the mentioned drawback of the known automatic systems is avoided in motor vehicles in relation to the driver by driving resistance changes detected for the lying ahead of the vehicle distance or determined and used to control and / or regulation of this automatic system is used. By doing so, the shifting comfort during a switching operation of an automatic transmission in a motor vehicle can be significantly improved, for example.
• An "automatic" in or on a motor vehicle the sum of all control and regulation means for the units and devices of the vehicle drive train is in connection with the invention in a first variant understood. In a second variant, the term "automatic system" a separate acquisition and processing means of sensor data, which is drive-strand-specific control and regulating devices in signal connection. This powertrain specific control and regulation devices such as a transmission control unit and an engine control unit.
• The invention is based in accordance with the features of claim 1 of a method for controlling and / or regulation of an automatic system of a motor vehicle using detection data of at least a detection system for detecting a front of the vehicle route. It is provided that the detection data are combined to form a running resistance profile in the area a fixed distance in front of the motor vehicle to act on the automatic system in such a way that a suitable strategy for tackling the route ahead of the vehicle is developed.
• It has been found that a truly effective control and / or regulation of an automatic system of a motor vehicle, the running resistance development is relevant to the route ahead of the vehicle. If the vehicle travels on a downward slope, it must be decided whether the automatic transmission is to be controlled to perform a downshift, for example, to increase the effect of the retarder braking of the vehicle, or whether the current gear should be maintained as in example 20 meters passes over the gap in a plane. Does the level after a further 10 meters back into a gradient across the downshift would have been the right decision.
• The data from different acquisition systems and sensors are doing (2 km, for example) combined to a driving resistance profile for a defined stretch of road ahead of the vehicle. This imaginary, anticipatory vehicle and constantly updated driving resistance profile is then provided to the automatic system, to develop a perfectly suitable strategy to cope with the track ahead of the vehicle.
• An important advantage of this approach is that so ummittelbar forthcoming, the medium entering, but also becomes effective only at greater distances traveling resistance changes for the control and / or regulation may be considered by autonomous vehicle systems. For example, if the information about the current position and vehicle speed are taken into account, the automatic system knows long before the vehicle is traveling the corresponding portion running resistance when applied to the vehicle.
• the automatic system of the motor toy in response to the appropriate strategy is controlled preferably such that a transmission control module selects the most favorable for the upcoming route transmission ratio or the lowest gear and drives the actuators of the automatic transmission in this respect.
• Indicates the so-called leading-driving resistance such as a kilometer long slope, as in the automatic transmission, a suitable, relatively small gear is selected. This leads to the result to a forward-looking and adapted to the driving resistance development strategy for switching the automatic transmission by which comfort enhancing reduces the switching frequency and oscillating shifts are avoided.
• In an alternative embodiment, an engine control unit of the motor vehicle is reconfigured in response to the determined appropriate strategy with regard to the pre-determined running resistance profile of the route lying ahead in such a way that the drive motor of the motor vehicle possible emissions and consumption low overcome the vorausbeurteilten next ironing portion. Thus, a maximum of efficient driving can also be controlled in this embodiment.
• In a further alternative embodiment of the method according to the invention, the automatic system of the motor vehicle is controlled in response to the determined appropriate strategy with respect to the lying ahead running resistance curve in such a way and / or regulated in that an additional unit is switched on or off the motor vehicle. Such additional unit may for example be air conditioning or even a power plant. Likewise, the additional unit can be reduced or reconfigured its power output or increased.
• In one particular embodiment, for example, certain units can be changed in hybrid vehicles based on the knowledge about the current and / or to-the anticipated driving resistance or switched off or in their effectiveness. Thus, an existing in the hybrid vehicle, the electric machine can for example be switched on an expected large track pitch as a drive motor in addition to an internal combustion engine and operated. In another case, this electric motor can be switched in heavy infrastructure gap in their regenerative function, so that, can decelerating, winning the vehicle electrical energy and fed into the vehicle electrical system.
• Preferably, such values ​​for determining a running resistance most appropriate drive or control and regulation strategy are determined, with which the automatic system of the motor vehicle is operable such that the opposite front of the vehicle track in response to input parameters of a user as quickly as possible and / or possible sporty is managed or energy as economically as possible. In this embodiment, the driver's wishes can be taken into account with regard to the desired mode of operation advantageously.
• Preferably, a running resistance calculated optimal strategy in particular such values ​​to determine with which a fuel consumption and / or pollutant reduction, for example, a CO2 reduction is achieved by an improved drive management.
• at least one position detection system for the vehicle is favored used as a detection system. In a preferred embodiment, a Global Positioning System (GPS) is used as a position detection system. This system is a globe-exciting satellite system for high-precision positioning, navigation and time distribution. A GPS receiver can be calculated from the simultaneously received signals from at least three satellites, the signal propagation time and determine therefrom exactly its position in principle to a few centimeters. With a fourth satellite, the speed and direction of a GPS receiver can be determined by making use of the Doppler effect in addition.
• In an alternative embodiment, a data storage is used, are stored in which sections. For this purpose, in a preferred embodiment, predetermined road gradients and / or topographic data is used as line sections. Thus, the running resistance of individual sections, similar to road profiles or topographical data, map out.
• It proves to be advantageous that not every control and regulation unit must perform its own driving resistance calculation in the drive train. The mapped information must be combined with each vehicle-specific data, such as current mass, specific rolling resistance or drag of the vehicle and combined into a total road load only.
• a device for controlling and / or regulation of an automatic system of a motor vehicle using detection data of at least a detection system for detecting a front of the vehicle track and for outputting detection data in response to this detection, also is provided for solving the problem posed.
• According to the invention, the automatic system further includes a calculation unit for summarizing data to a running resistance profile in the area a fixed distance in front of the motor vehicle in response to the detection data, and an actuator for such an intervention to the automatic system, a suitable strategy for tackling the front of the vehicle can develop wayside.
• This device turns out to be advantageous that the data of different detection systems are combined to form a running resistance profile for a defined distance ahead of the vehicle. This imagi ary, anticipatory the vehicle running resistance profile can then help the automatic system or the back cross it, control and / or regulation devices, to develop an appropriate strategy for tackling the distance ahead of the vehicle.
• The advantage of this device is that so ummittelbar forthcoming, the medium entering, but only at a greater distance becomes effective driving resistance changes factored in and can be used for optimal controlling and / or regulation. If the information is considered on current position and vehicle speed, the respective automatic system knows long before the vehicle is traveling the corresponding portion running resistance when to deal with.
• Preferably, the automatic system of the vehicle includes a transmission, in particular an automatic transmission, wherein the actuator is adapted to adjust a suitable gear ratio or gear of the automatic transmission.
• Alternatively, the automated system includes at least one motor, wherein the actuator is adapted to re-parameterize the at least one motor. Alternatively, the automated system includes an additional generator, wherein the actuator is configured for switching on or off or to vary the effectiveness of this additional unit. This additional unit may be an electric machine which is in a hybrid vehicle additionally or alternatively to a main drive motor designed as a combustion engine to respond to the determined driving resistance profile of the travel motor or a generator operable and can be switched.
• In a preferred embodiment the detection system comprises a position detection system. Preferably, the position detection system is a GPS system. Alternatively or in addition thereto, the detection system contains a data memory, in which sections prestored. Preferably, the sections predetermined road gradients and / or topographic data.
• The invention can be explained further by way of example. To a drawing of the specifications is included. This shows 1 a schematic structure of an automatic system according to the invention in a drive train of a motor vehicle.
• This automatic system 1 is initially provided with an input side for receiving physical measurement values ​​and data from a detection system 2 are provided for detecting a distance ahead of the vehicle available. In this embodiment, the detection system 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 can 2 include other sensors, with the aid of the running resistance curve along a path ahead of the vehicle can be determined.
• With the detection system 2 determined detection data is a computation unit 3 supplied to the combining of data to a driving resistance profile in the specified route prior to the motor vehicle. This calculation unit 3 calculated and found values ​​with which the automatic system 1 is controlled such that the route lying ahead of the motor vehicle is handled as quickly as possible and / or possible sporty or economical as possible in response to input parameters of a user.
• As a result, in this embodiment of the invention is calculated in each case a factor which is an operational situation-related parameter for determining whether an automatic transmission 4 and / or a clutch 5 to be acted upon. In addition, a factor can be calculated, which is an operational situation-specific parameter for determining whether an engine 6 , For example a vehicle drive motor to be acted upon at least.
• Thus, it is possible for example that in a hybrid vehicle having a track with a high running resistance ahead of the vehicle, a is turned on in this located electric machine for an electric motor mode, so as a driving motor serving as the internal combustion engine 6 to assist in propelling the vehicle.
• The respective parameters for controlling and / or regulating of the transmission 4 and / or the coupling 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 of the automatic transmission 4 be from one interface 9 via a data or control line 10 to an actuating device 11 the automatic transmission 4 transfer. The parameters for controlling and / or regulating the clutch 5 be from one interface 12 via a data or control line 13 to an actuating device 14 (For example, a piston-cylinder assembly) to the coupling 5 transfer. Finally, the parameters for controlling and / or regulating the at least one motor are 6 from one interface 15 via a data or control line 16 a locking device 17 on the engine 6 transfer. The adjusting means mentioned are formed for example as a pressure medium actuators.

1

automatic system

2

acquisition system

3

calculation unit

4

automatic transmission

5

clutch

6

Engine, main drive motor, internal combustion engine

7

Clutch and transmission control module

8th

Engine Control Module

9

interface

10

Data or command line

11

Actuating means at the gearbox

12

interface

13

Data or command line

14

Actuator at the coupling

15

interface

16

Data or command line

17

Locking device on the motor

Claims (20)

1. A method for controlling and / or regulation of an automatic system ( 1 ) Of a motor vehicle (using detection data of at least one detection system 2 ) For detecting a vehicle ahead of the track, characterized in that the detection data are combined to a driving resistance profile in the area of a track in front of the motor vehicle in order (on the automatic system 1 act) in such a way that a suitable strategy for tackling the route ahead of the vehicle is developed.
2. A method according to claim 1, characterized in that said automatic system ( 1 ) Is controlled in response to the appropriate strategy in such a way that (in an automatic transmission 4 () Of the automatic system 1 ) Is set a suitable gear ratio.
3. A method according to claim 1 and 2, characterized in that said automatic system ( 1 ) Is controlled in response to the appropriate strategy such that a motor ( 6 () Of the automatic system 1 ) Is reconfigured.
4. A method according to at least one of the preceding claims, characterized in that said automatic system ( 1 ) Is controlled in response to the appropriate strategy such that an additional aggregate (in the automated system 1 ) Switched on, reconfigured, reduced in power output or increased or is switched off.
5. A method according to claim 4, characterized in that to deal with the lying ahead driving resistance an electric machine is on or off or altered in their effectiveness, and an electric motor a main drive motor (in the on state 6 ) Drivingly operated supportive motor or is operated a generator.
6. Method according to one of the preceding claims, characterized in that values ​​for the appropriate strategy will be determined by which (the automatic system 1 is controlled) in such a manner and / or controlled so that the route lying ahead of the motor vehicle is handled as quickly as possible and / or possible sporty or economical as possible in response to input parameters of a user.
7. A method according to claim 6, characterized in that to determine the appropriate strategy values ​​are determined with which a fuel consumption and / or pollutant reduction is achieved by an improved drive management.
8. A method according to at least one of the preceding claims, characterized in that (as a detection system 2 ) Is used at least one position detection system.
9. A method according to claim 8, characterized in that a GPS system is used as a position detection system.
10. A method according to claim 8, characterized in that (as a detection system 2 ) Is used, a data storage, in which sections pre-stored.
11. A method according to claim 10, characterized in that predetermined road gradients and / or topographic data is used as line sections.
12. A device for controlling and / or regulation of 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 outputting detection data in response to the detection, characterized in that said automatic system ( 1 ) Further comprises a calculation unit ( 3 ) (For summarizing data to a running resistance profile in the area of ​​a track in front of the motor vehicle in response to the detection data, and an actuator 7 . 8th ) (For such intervention in the automatic system 1 ) Containing, that a suitable strategy for tackling the route ahead of the vehicle is developable.
13. Device according to claim 12, characterized in that said automatic system ( 1 ) An automatic transmission ( 4 ), Wherein the actuator ( 7 ) (For setting a suitable transmission ratio of the transmission 4 ) is trained.
14. Device according to claim 12, characterized in that said automatic system ( 1 ) At least a motor ( 6 ), Wherein the actuator ( 8th ) (For Reconfiguration of the engine 6 ) is trained.
15. Device according to claim 12, characterized in that said automatic system ( 1 ) Contains an additional unit, wherein the actuator ( 8th ) Is adapted for switching on or off or to vary the effectiveness of the additional unit.
16. Device according to claim 15, characterized in that the additional assembly is designed as an electric motor or as a generator operable electric machine.
17. Device according to claim 12, characterized in that the detection system ( 2 ) Contains a position detecting system.
18. Device according to claim 17, characterized in that the position detection system is a GPS system.
19. Device according to claim 17, characterized in that the detection system ( 2 ) Contains a data memory, in which sections prestored.
20. Device according to claim 19, characterized in that the sections are predetermined road gradients and / or topographic data.