Trapezoidal MF
Trapezoidal membership function
Libraries:
Fuzzy Logic Toolbox /
Membership Functions
Description
The Trapezoidal MF block implements a trapezoid-shaped membership function.
The parameters a and d control the left and right feet or base points of the trapezoid. The parameters b and c control the left and right shoulders or top points of the trapezoid.
The shape of the membership function depends on the relative values of b and c.
When c is greater than b, the resulting membership function is trapezoidal.
When b is equal to c, the resulting membership function is equivalent to a triangular membership function with parameters [a b d].
When c is less than b, the resulting membership function is triangular with a maximum value less than 1.
This block is related to the Triangular MF, Linear S-shaped MF, and Linear Z-shaped MF blocks.
Ports
Input
Output
Parameters
Extended Capabilities
Version History
Introduced before R2006a
See Also
Functions
Blocks
- Diff. Sigmoidal MF | Gaussian MF | Gaussian2 MF | Generalized Bell MF | Linear S-shaped MF | Linear Z-shaped MF | Pi-shaped MF | Prod. Sigmoidal MF | S-shaped MF | Sigmoidal MF | Triangular MF | Z-shaped MF