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參數(shù)資料
| 型號： | ST52T301P |
| 廠商： | 意法半導體 |
| 英文描述： | 8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER |
| 中文描述： | 8位檢察官辦公室/存儲器DuaLogic]與藝術發(fā)展局和UART，定時器，可控硅控制器 |
| 文件頁數(shù)： | 15/100頁 |
| 文件大?。?/td> | 497K |
| 代理商： | ST52T301P |
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2.4.3 Inference Unit
ItmanagesthealphaweightsobtainedbytheAlpha
Calculator Unit to computethe truth value (
ω
) for
each rule.
This is a calculation of the maximum (for the OR
operator) and/or minimum (for the AND operator)
performedon alphavaluesaccordingto the logical
connectivesof fuzzyrules.
It is possibileto link togetherup to eightconditions
by linguistic connectives AND/OR, NOT operator
and brackets.
Each rule can have at maximum 8 alpha weights
(howeverthey are connected).
The truth value
ω
and the related output singleton
are passed to the Defuzzifier to complete the
inferencecalculation.
Input 1
X1
α
1
Input 2
X2
α2
OR = Max
IF
INPUT 1
IS X1 OR
INPUT 2
IS X2 THEN.......
Input 1
X1
α
1
Input 2
X2
α2
IF
INPUT 1
IS X1 AND
INPUT 2
IS X2 THEN.......
Figure2.10.
2.4.4 Defuzzifier
This block consists of a Multiplier,two Addersand
one Divider. It generates the output crisp values
implementingthe consequentpart of the rules.
In this phase each consequent Singleton X
i
is
multiplied by its weightvalues
ω
i
, calculatedby the
InferenceUnit in order to compute the upper part
of the defuzzification.
Eachoutputvalue(FUZZY_OUT0,FUZZY_OUT1)
is deduced from the consequentcrisp values (X
i
)
by using the defuzzificationformula:
Y
i
=
∑
X
ij
ω
ij
j
N
∑
ω
ij
j
N
where:
i = 0,1identifiesthe current output variable
N=numberof theactiveruleson thecurrentoutput
ω
ij
=weigth of the j-th singleton
Xij = abscissaof the j-th singleton
The two fuzzy outputs are stored in the location9
and 10 of the Input Registers (FUZZY_OUT_0,
FUZZY_OUT_1).
1
i-th OUTPUT
VARIABLE
0
X
ij
X
i0
X
in
ω
i0
ω
ij
ω
in
j-th Singleton
Figure 2.11.
15/99
ST52T301/E301
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