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Copy of FuzzyControl Using FCL and Raspberry Pi

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by

edgar munoz

on 21 May 2013

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Transcript of Copy of FuzzyControl Using FCL and Raspberry Pi

The Results The Implementation The Trials The Idea Problem: Resources Fuzzy Climate Control With
Raspberry Pi Control 2013 Fuzzy Control Fuzzy Logic
+
Programmable
Controller Fuzzy Logic What is Fuzzy
Logic? How is Fuzzy
Logic Different from Conventional Control Methods? But how
does it
work? FUNCTION_BLOCK

VAR_INPUT
<variable name> REAL;
END_VAR

VAR_OUTPUT
<variable name> REAL;
END_VAR

FUZZIFY <variable name>
TERM <term (or set) name> := <points that make up the term> ;
END_FUZZIFY

DEFUZZIFY valve
METHOD: <defuzzification method>;
END_DEFUZZIFY

RULEBLOCK <ruleblock name>
<operator>:<algorithm>;
ACCUM:<accumulation method>;
RULE <rule number>: IF <condition> THEN <conclusion>;
END_RULEBLOCK

END_FUNCTION_BLOCK - Office Temperature is too cold.
- Do not want to heat the whole basement.
- Takes forever to warm up.
- Heater gets left on over night. Solution: - Use python and pyFuzzy module to develop a fuzzy logic controller capable of managing the office temperature. Components required: One Wire Digital Temperature Sensor

AdaFruit ribbon cable connector

8 Channel Relay Module

RaspberryPi Class Diagram VAR_INPUT
temp : REAL;
time : REAL;
outside: REAL;
END_VAR

FUZZIFY temp
TERM cold := (12, 1) (16, 0);
TERM cool := (16, 0) (18, 1) (20, 0);
TERM hot := (20, 0) (24, 1);
END_FUZZIFY

FUZZIFY time
TERM home := (0, 1) (9, 0) (14, 0) (20, 1) (24, 1);
TERM asleep := (0, 1) (6, 0) (20, 0) (24, 1);
END_FUZZIFY

FUZZIFY outside
TERM summer := (10, 0)(20, 1);
TERM winter := (0, 1)(10, 0);
END_FUZZIFY Fuzzy Control Language - therm.fcl DEFUZZIFY heater
TERM on := 1;
TERM off := 0;
ACCU : MAX;
METHOD : COGS;
DEFAULT := 0;
END_DEFUZZIFY COGS - Center Of Gravity for Singletons Fuzzy Control Language VS References - IEC 1131 -PROGRAMMABLE CONTROLLERS Part 7 Fuzzy Control Programming

- jFuzzyLogic: A Robust and Flexible Fuzzy-Logic Inference System Language
Implementation.

- Artificial Intelligence A Modern Approach : Russel, Norvig.

- http://docs.python.org/2/

- https://github.com/dearingdbk/piHome.git

- http://pyfuzzy.sourceforge.net/ RULEBLOCK No1
AND : MIN;
RULE 1 : IF temp IS cold AND outside IS winter THEN heater IS on;
RULE 2 : IF temp IS cool AND outside IS summer THEN heater IS off;
RULE 3 : IF temp IS cool AND time IS asleep THEN heater IS off;
RULE 4 : IF temp IS cool AND time IS NOT asleep AND time IS home THEN heater IS on;
RULE 5 : IF temp IS hot THEN heater IS off;
END_RULEBLOCK
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