Why do I receive different results from the same FIS, when using the Fuzzy Logic Toolbox and comparing then to my Simulink results?

I am implementing the same fuzzy inference system in 2 ways.

1. Using the FIS editor from the Fuzzy Logic Toolbox

2. Using the Fuzzy Logic Controller block in Simulink (and constants as inputs)

If I provide an input vector of [p-term d-term] = [1 0] while in the fuzzy logic Toolbox (In Rule Viewer: fuzzycontrol, to be precise), I get an answer of 0.895. If I provide the same input vector to the Simulink model, I get the same answer (0.895)

If I use [1 .01] as the input vector, I get the same answer as above (0.895) in the Fuzzy Logic Toolbox ( Rule Viewer:fuzzycontrol ), but in the Simulink model, I get an answer of 0.00 (Incorrect).

Is this a bug?

Answer 1

[MathWorks Support Team]

This bug has been fixed in the Fuzzy Logic Toolbox version 2.1.2 (R13) and Simulink 5.0 (R13).

If you are using a previous version, there are no work arounds.