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
In computer science, a lookup table (LUT) is an array that replaces runtime computation with a simpler array indexing operation. The process is termed as "direct addressing" and LUTs differ from hash tables in a way that, to retrieve a value v wi ...
.
[{{Cite book, last=Eriksson, first=Lars, url=https://www.worldcat.org/oclc/871860234, title=Modeling and control of engines and drivelines, date=2014, publisher=Wiley, others=Lars Nielsen, isbn=978-1-118-53620-9, location=Hoboken, pages=274–275, chapter=10.1.2 Basic Control Using Maps, oclc=871860234] 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.
References
Control engineering