Method for controlling processes in a motor vehicle
First Claim
1. A method for controlling at least one process in a motor vehicle, the motor vehicle including a control unit having an engine characteristics map, the method comprising the steps of:
- forming the engine characteristics map with operating quantities of the at least one process, the engine characteristics map being represented by at least one support point being positioned at selected locations in the engine characteristics map independent of a fixed grid, each of the at least one support point corresponding to at least one respective engine characteristics value of the engine characteristics map at the selected locations of the at least one support point;
generating at least one of a control quantity and a model quantity for providing at least one of a control emission signal and a modeling emission signal;
determining the at least one engine characteristics value from the engine characteristics map as a function of at least one of the control and model quantities to obtain at least one working point of the at least one process;
adapting the engine characteristics map to a changed process behavior of the at least one process for determining a first correction value for a preselected operating phase of the at least one process;
selecting a first support amount of the at least one support point positioned near the first correction value for adapting the engine characteristics map;
calculating a second correction value for each of the selected support points as a function of the first correction value for the first support amount of the at least one support point; and
adaptively distance-weighting the first support amount of the at least one support point as a function of a position of the first correction value in the engine characteristics map.
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Abstract
A method for controlling processes in a motor vehicle is intended, for example, for open-loop/closed-loop control of combustion processes, transmission switching processes or braking processes. An engine characteristics map is formed by operating quantities of the respective process and is represented by a number of support points. In the corresponding control unit, for each support point a piece of information about the value of the map at the position of the support point is provided. In the open-loop/closed-loop control of the process, for a determined working point of the process at least one map value that is decisive for this working point is determined from the map and taking account of this, at least one control quantity for the emission of a control signal is formed. The map is automatically adapted to a changed process behavior. For the adaptation, a correction value is determined for a certain operating phase of the map. According to the present invention, additionally for each support point a piece of information about the position of the support point within the map is provided so that the support points are enterable independent of a fixed grid into the map. For adaptation of the map, a number of support points of the map lying around the determined correction value is chosen. These support points are then adapted, the support point correction being carried out distance-weighted with reference to the position of the determined correction value within the map.
38 Citations
33 Claims
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1. A method for controlling at least one process in a motor vehicle, the motor vehicle including a control unit having an engine characteristics map, the method comprising the steps of:
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forming the engine characteristics map with operating quantities of the at least one process, the engine characteristics map being represented by at least one support point being positioned at selected locations in the engine characteristics map independent of a fixed grid, each of the at least one support point corresponding to at least one respective engine characteristics value of the engine characteristics map at the selected locations of the at least one support point; generating at least one of a control quantity and a model quantity for providing at least one of a control emission signal and a modeling emission signal; determining the at least one engine characteristics value from the engine characteristics map as a function of at least one of the control and model quantities to obtain at least one working point of the at least one process; adapting the engine characteristics map to a changed process behavior of the at least one process for determining a first correction value for a preselected operating phase of the at least one process; selecting a first support amount of the at least one support point positioned near the first correction value for adapting the engine characteristics map; calculating a second correction value for each of the selected support points as a function of the first correction value for the first support amount of the at least one support point; and adaptively distance-weighting the first support amount of the at least one support point as a function of a position of the first correction value in the engine characteristics map. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification