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{{Expert-subject|Engineering|date=November 2008}}
In the field of [[control engineering]], a '''map-based controller''' is a controller whose outputs are based on values derived from a pre-defined [[lookup table]]. The inputs to the controller are usually values taken from one or more sensors and are used to index the output values in the lookup table. By effectively placing the [[transfer function]] as discrete entries within a lookup table, engineers free to modify smaller sections or update the whole list of entries as required.
Map-based controllers are frequently used to manage fuel delivery systems in modern [[internal combustion engine]]s.
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