Week - 4

AIM-

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

After all the processes have completed turn on the finished LED.

2. Make a Simulink chart for the “Gear shift” logic as per below conditions:

Speed Range(kmph) Gear

0 to 15 1

16 to 25 2

26 to 40 3

41 to 60 4

Above 61 5

Give speed input while the simulation is running & display the gear number.

EXPLAINATION-

STATEFLOW OF AUTOMATIC WASHING MACHINE MODEL-

FIGURE-1

Parameter- Condition-

Value: ‘1’ means ‘input present’ Lamp color green-‘Process in-progress’

Value: ‘0’ means ‘no input present’ Lamp color red-‘Process end’

CHART-DIAGRAM-

FIGURE-2

• Open the Simulink application from the Matlab software.
• Click on create ‘Blank Model’.
• Search for ‘Chart’ model & double click to start the stateflow.
• Create Transition stateflow chart as shown in the above figure 2. FIGURE-3

Goto the task bar search option, select symbol pane then dialogue box will appear as shown below-

FIGURE-4

OUTPUT PARAMETERS- Water, soak, washing, rinsing, dryer & cycle.

INPUT PARAMETERS- Power_supply & water_supply.

• Exit the ‘Chart’ model which redirect to the main page of the Simulink as shown in figure 1.
• Simulation time i.e stop time is set to 430sec as shown below-

FIGURE-5

CONDITION-

1. If the water_supply is cut off & only power_supply is given.

The outcome is shown below-

FIGURE-6

Parameter- Condition-

Value: ‘1’ means ‘input present’ Lamp color green-‘Process in-progress’

Value: ‘0’ means ‘no input present’ Lamp color red-‘Process end’

From the above diagram, it is observed that the indicator of the water is showing ‘RED’ means the process is terminated.

2. If both the water_supply & power_supply is given. The outcome is shown below-

FIGURE-7

Parameter- Condition-

Value: ‘1’ means ‘input present’ Lamp color green-‘Process in-progress’

Value: ‘0’ means ‘no input present’ Lamp color red-‘Process end’

From the above diagram, it is observed that the indicator is showing ‘GREEN’, that means all the state has been executed and final completion of the process.

CONCLUSION-

The simulation of the automatic washing is used by the stateflow is done & the result is satisfactory.

2) Make a Simulink chart for the “Gear shift” logic as per below conditions:

Speed Range(kmph) Gear

0 to 15 1

16 to 25 2

26 to 40 3

41 to 60 4

Above 61 5

Give speed input while the simulation is running & display the gear number.

EXPLAINATION-

STATEFLOW OF GEAR SHIFT LOGIC MODEL-

FIGURE-8

CHART DIAGRAM-

FIGURE-9

• Open the Simulink application from the Matlab software.
• Click on create ‘Blank Model’.
• Search for ‘Chart’ model & double click to start the stateflow.
• Create Transition stateflow chart as shown in the above figure 9.

FIGURE-10

Goto the task bar search option, select symbol pane then dialogue box will appear as shown below-

FIGURE-11

INPUT PARAMETERS- speed

OUTPUT PARAMETERS- Gear

• Simulation time i.e stop time is set to ‘inf’ as shown below-

FIGURE-12

‘inf’ means infinity. Infinity results from operations like division by zero and overflow, which lead to results too large to represent as conventional floating-point values.

INPUT-

We use gain slider to provide the input in the chart.

FIGURE-13

Changing the values from 0 to 100 using gain slider during the simulation.

OUTPUT-

The output is been produce by simulation which has been recorded.

GEAR-1

Speed Range(kmph): 0 to 15

Input speed: 10kmph

Color: Green

FIGURE-14

GEAR-2

Speed Range(kmph): 16 to 25

Input speed: 22kmph

Color: Blue

FIGURE-15

GEAR-3

Speed Range(kmph): 26 to 40

Input speed: 36kmph

Color: Light blue

FIGURE-16

GEAR-4

Speed Range(kmph): 41 to 60

Input speed: 53kmph

Color: Yellow

FIGURE-17

GEAR-5

Speed Range(kmph): Above 61

Input speed: 88kmph

Color: Red

FIGURE-18

CONCLUSION-

The simulation of the ‘Gear Shift’ logic is used by the stateflow is done & the result is satisfactory.