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US 6,272,477 B1Granted
Hypertrapezoidal fuzzy dynamic state interpreter
AssigneeThe Texas A&M Univerisity System
InventorsWallace E. Kelly, III, John H. Painter
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Abstract
An apparatus for determining the state of a dynamic system is disclosed. The apparatus comprises one or more sensors operable to sample physical parameters of a system, and a mode interpreter. The mode interpreter is operable to receive data from the sensor and determine the state of the dynamic system using hypertrapezoidal membership functions.
Claims23
An apparatus for determining a state of a dynamic system comprising:
- a sensor section operable to sample a plurality of different physical parameters of the system to produce a multi-dimensional sample;
- and
- a mode interpreter operable to:
- maintain a respective predetermined prototype point for each of a plurality of multi-dimensional fuzzy sets which each correspond to a respective one of a plurality of possible states of the system;
- determine a degree of hypertrapezoidal fuzzy membership of said sample in each of said multi-dimensional fuzzy sets based on a calculation which is a function of said prototype points and said sample;
- and
- select one of said states as a function of said determined degrees of hypertrapezoidal fuzzy membership.
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A method for determining a state of a dynamic system comprising:
- sampling a plurality of different physical parameters of the system to produce a multi-dimensional sample;
- maintaining a respective predetermined prototype point for each of a plurality of multi-dimensional fuzzy sets which each correspond to a respective one of a plurality of possible states of the system;
- determining a degree of hypertrapezoidal fuzzy membership of said sample in each of said multi-dimensional fuzzy sets based on a calculation which is a function of said prototype points and said sample;
- and
- selecting one of said states as a function of said determined degrees of hypertrapezoidal fuzzy membership.
2 more elements
Dependencies are inferred from the claim text.