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參數(shù)資料
| 型號： | ST52X420 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | ADC |
| 英文描述： | 8-BIT INTELLIGENT CONTROLLER UNIT (ICU) Three Timer/PWMs, ADC, WDG |
| 中文描述： | 8位智能控制器病房（ICU）3個定時器/的PWM，ADC的，水分散粒劑 |
| 文件頁數(shù)： | 38/84頁 |
| 文件大?。?/td> | 1274K |
| 代理商： | ST52X420 |
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ST52T410/T420/E420
38/84
Figure 6.3 Fuzzyfication
IF
INPUT 1
IS X1 OR
INPUT 2
IS X2 THEN .......
6.4 Defuzzyfication
In this phase the output crisp values are
determined by implementing the consequent part
of the rules.
Each consequent Singleton X
i
is multiplied by its
weight values
ω
i
, calculated by the Decision
processor, in order to compute the upper part of
the Defuzzyfication formula.
Each output value is obtained from the consequent
crisp values (X
i
) by carrying out the following
Defuzzyfication formula:
where:
i = identifies the current output variable
N = number of the active rules on the current
output
ω
ij
= weight of the j-th singleton
X
ij
= abscissa of the j-th singleton
The Decision Processor outputs are stored in the
RAM location i-th specified in the assembler
instruction OUT i.
6.5 Input Membership Function
The Decision Processor allows the management of
triangular Mbfs. In order to define an Mbf, three
different parameters must be stored on the
Program/Data Memory (see Figure 6.4):
I
the vertex of the Mbf:
V
;
I
the length of the left semi-base:
LVD
;
I
the length of the right semi-base:
RVD
;
In order to reduce the size of the memory area and
the computational effort the vertical range of the
vertex is fixed between 0 and 15 (4 bits)
By using the previous memorization method
different kinds of triangular Membership Functions
may be stored. Figure 6.5 shows some examples
of valid Mbfs that can be defined in ST52T410/
ST52x420.
Each Mbf is then defined storing 3 bytes in the first
Kbyte of the Program/Data Memory.
The Mbf is stored by using the following instruction:
MBF
n_mbf lvd v rvd
where:
n_mbf
is a tag number that identifies the Mbf
lvd
,
v
, and
rvd
are the parameters that describe the
Mbf
’
s shape as described above.
Figure 6.4 Mbfs Parameters
Input 1
X1
α
1
Input 2
X2
α2
OR = Max
Input 1
X1
α
1
Input 2
X2
α2
IF
INPUT 1
IS X1 AND
INPUT 2
IS X2 THEN .......
Y
i
X
ij
ω
ij
N
∑
---------------------
ω
ij
j
∑
=
X
15
w
LVD RVD
V
15
0
0
Input Mbf
Output Singleton
Output Variable
Input Variable
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| ST52X430 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
| ST52X430KIT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
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