Week - 4
CHALLENGE -1:
IMPLEMENT CONTROL LOGIC OF A WASHING MACHINE USING STATEFLOW AS PER GIVEN SEQUENCE:
IF THE POWER SUPPLY IS AVAILABLE, THE SYSTEM GETS ACTIVATED
IF THE WATER SUPPLY IS NOT AVAILABLE, STOP THE PROCESS & INDICATE THROUGH LED.
SOAKING TIME SHOULD BE 200s FOLLOWED BY WASHING TIME OF 100s.
THEN RINSING HAPPENS FOR NEXT 20s & DRYER RUNS FOR 50s
AIM
TO USE THE STATEFLOW FEATURE OF SIMULINK TO IMPLEMENT THE CONTROL LOGIC OF WASHING MACHINE AS PER GIVEN DATA.
WHAT IS STATE FLOW?
STATE FLOW PROVIDES A GRAPHICAL LANGUAGE THAT INCLUDES STATE TRANSITION DIAGRAMS, FLOW CHARTS, STATE TRANSITION TABLES, AND TRUTH TABLES.
STATE FLOW ENABLES TO DESIGN AND DEVELOP SUPERVISORY CONTROL, TASK SCHEDULING, FAULT MANAGEMENT, COMMUNICATION PROTOCOLS, USER INTERFACES AND HYBRID SYSTEMS.
WITH STATEFLOW, MODEL COMBINATORIAL AND SEQUENTIAL DECISION LOGIC THAT CAN BE SIMULATED AS A BLOCK WITHIN A SIMULINK MODEL OR EXECUTES AS AN OBJECT IN MATLAB.
GRAPHICAL ANIMATION ENABLES YOU TO ANALYZE AND DEBUG YOUR LOGIC WHILE IT IS EXECUTING. EDIT-TIME AND RUN-TIME CHECKS ENSURE DESIGN CONSISTENCY AND COMPLETENESS BEFORE IMPLEMENTATION.
STATE FLOW CHART :
EXPLANATION:
WASHING PROCESS INVOLVES WASHING, SOAKING, 2ND TIME WASHING, RINSING, AND DRYER.
INPUT VALUE IS IN 1 WHICH IS IN ON CONDITION & ‘0’ VALUE REPRESENTS OFF CONDITION.
IF POWER SWITCH AND WATER FLOW IS IN ON CONDITION ,WASHING PROCESS DONE AND THEN MOVING ON TO THE SOAKING, RINSING & DRYER.
IF POWER SWITCH IS OFF (0) AND WATER FLOW IS IN (1) CONDITION, 1ST STAGE OF WASHING PROCESS NOT TAKEN PLACE.
SO, BOTH THE INPUTS IN ON CONDITION TO COMPLETE THE WHOLE WASHING PROCESS UPTO DRYING.
PROCESS TIMINGS ARE,
i). SOAKING FOR 200s
ii). WASHING FOR 100s
iii). RINSING FOR 20s
iv). DRYING FOR 50s
SIMULINK BLOCK :
ROCKER SWITCH IS USED HERE, GIVEN THE INPUT VALUE AS 1 AND 0 FOR ON AND OFF CONDITION RESPECTIVELY.
DISPLAY PORT IS CONNECTED FOR ALL PROCESS TO FIND WEATHER THE PROCESS IS COMPLETED OR NOT.
OUTPUT:
HERE, POWERSWITCH AND WATER FLOW IS IN ON CONDITION (i.e VALUE GIVEN IS 1) AND THE ROCKER SWITCH IS ON, SO THAT ALL PROCESS ARE COMPLETED AND INDICATE THE GREEN COLOR IN LAMP .
HERE, WATER FLOW IS IN OFF CONDITION (i.e ‘0’ VALUE IS GIVEN) WASHING PROCESS IS NOT PROCEEDED AND RETURNED BACK WHICH IS INDICATED BY RED LIGHT.AND FUTHER PROCESS ALSO NOT TAKEN PLACE.
CONCLUSION:
FROM THE ABOVE BLOCKS AND OUTPUTS, MACHINE WILL BE STOP IF SWITCH AND WATER FLOW IS IN OFF CONDITION AND FURTHER PROCESS TAKEN PLACES. WASHING PROCESS CAN BE FULLY DONE BY WHEN IT IS ON CONDITION AND IT WAS INDICATED BY GREEN LIGHT.
CHALLENGE:2
TO SHOW THE GEAR SHIFT LOGIC IN STATE FLOW DIAGRAM AND ACQUIRE KNOWLEDGE ABOUT GEAR TRANSMISSION SYSTEMS IN VEHICLE.
AIM:
TO MAKE A SIMULINK CHART FOR THE “GEAR SHIFT” LOGIC.
OBJECTIVE:
MAKING A SIMULINK CHART FOR THE GEAR SHIFT FOR THE BELOW MENTIONED PARAMETERS.
STATE FLOW CHART OF CONTROL LOGIC:
HERE, VALUE 1 REPRESENT IN ON CONDITION. USING THE CHART BLOCKS WE MENTIONED THE GEAR CONTROLS AND THEIR SPEED ACCORDINGLY.
IGNITION & SPEED IS IN INPUT PORT AND GEAR IS IN OUTPUT PORT.
GEAR-1
HERE, 5 Km/hr IS GIVEN AS INPUT SPEED, GEAR 1 DENOTED AS OUTPUT VALUE.
GEAR-2
HERE, 25 Km/hr IS GIVEN AS INPUT SPEED, GEAR 2 DENOTED AS OUTPUT VALUE.
GEAR-3
HERE, 30 Km/hr IS GIVEN AS INPUT SPEED, GEAR 3 DENOTED AS OUTPUT VALUE.
GEAR-4
HERE, 45 Km/hr IS GIVEN AS INPUT SPEED, GEAR 4 DENOTED AS OUTPUT VALUE.
GEAR-5
HERE, 70 Km/hr IS GIVEN AS INPUT SPEED, GEAR 5 DENOTED AS OUTPUT VALUE.
CONCLUSION:
CREATED A STATE FLOW FOR GEAR SHIFT USING SIMULINK AND THE RESULTS ARE SHOWN.