參數(shù)資料
型號(hào): ST52T301P
廠商: 意法半導(dǎo)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(chǔ)器DuaLogic]與藝術(shù)發(fā)展局和UART,定時(shí)器,可控硅控制器
文件頁(yè)數(shù): 16/100頁(yè)
文件大?。?/td> 497K
代理商: ST52T301P
2.4.5 Input Membership Function
ST52x301 allows to manage triangular Mbfs. In
order to definea Mbfit is necessary to store three
different data on the memory:
the vertex of the Mbf:
V
;
the lenght of the left semi-base:
LVD
;
the lenght of the right semi-base:
RVD
;
In order to reduce the dimension of the memory
area and the computational effort the vertical
dimensionof the vertex is fixed to 15 (4 bits)
By using the previous memorization method it is
possible to store different kinds of triangular
Memberships Functions. In the following figure is
shown a typical example of Mbfs that can be
definedin ST52x301
Each Mbf is then defined storing 3 bytes.To store
all the information related with the fuzzy project
Mbfs, it is necessary to use 192 bytes of the
memory (3 bytes*16Mbfs*4 Inputs = 192bytes).
X
15
w
LVD
RVD
V
15
0
0
InputMbf
Output Singeton
OutputVariable
InputVariable
Figure2.12.Mbfs Parameters
Figure2.13.Example of valid Mbfs
The Mbf is memorized by using the following
instruction:
DATAn m lvd v rvd
where
n identifies the input, m identifies the Mbf among
the16 possibleMbfs,lvd,v, rvdarethe parameters
describingthe Mbf’s shape.
2.4.6 Output Singleton
ST52x301usesfortheoutputvariablesa particular
kind of membership function called Singleton. A
Singleton has not a shape, like a traditional Mbf,
and it is characterized by a single point identified
by the couple (X,
ω
), where the
ω
is calculated by
the Inference Unit as describedbefore.
Oftena Singletonis simply identified with its Crisp
Value X.
16/99
ST52T301/E301
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