Method for the characteristic map-based obtention of values for a control parameter of an installation
First Claim
1. A method for obtaining, on the basis of a characteristic map, a value for at least one control parameter of an installation, the method which comprises:
- defining support points for the control parameter, each of the support points providing a value for the control parameter, across a range of operational parameters within a characteristic map in accordance with operational parameters of the installation;
dividing the range of operational parameters covered in the characteristic map into first and second subdomains each comprising a plurality of the support points;
storing the characteristic map in a control device that controls the installation;
using the control device to obtain a value for the control parameter by extrapolating when a boundary of the first subdomain is reached before the value for the control parameter is obtained by accessing support points of the second subdomain; and
wherein the control device uses the control parameter to control the installation.
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Accused Products
Abstract
Disclosed is a method for the characteristic map-based obtention of values for at least one control parameter of an installation, particularly an internal combustion engine. According to the inventive method, support points for the control parameter, which provide a value for the control parameter, are defined across a range of operational parameters within a characteristic map (4) in accordance with operational parameters of the installation, the range of operational parameters covered in said characteristic map is divided into a first and a second subdomain which comprises several of the support points, and the value for the control parameter is obtained by extrapolation when a boundary of the first subdomain is reached before the value for the control parameter is obtained by accessing support points of the second subdomain.
8 Citations
8 Claims
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1. A method for obtaining, on the basis of a characteristic map, a value for at least one control parameter of an installation, the method which comprises:
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defining support points for the control parameter, each of the support points providing a value for the control parameter, across a range of operational parameters within a characteristic map in accordance with operational parameters of the installation; dividing the range of operational parameters covered in the characteristic map into first and second subdomains each comprising a plurality of the support points; storing the characteristic map in a control device that controls the installation; using the control device to obtain a value for the control parameter by extrapolating when a boundary of the first subdomain is reached before the value for the control parameter is obtained by accessing support points of the second subdomain; and wherein the control device uses the control parameter to control the installation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification