Week - 4

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.

Answer :

1. Create a chart and give the input conditions to it.

2. After that give the conditions for turning on and off power supply and water supply as follows,

if value = 1 then power supply and water supply will turn on

if value = 0 then power supply and water supply will turn off.

Display block and lamp indicators are used to indicate results.

Outputs for washing machine :

Case 1 :-

If power source = 0 , then power supply is not available and system if off.

Case 2 :-

If power source = 1 and water source = 0 , then power supply will turn on and water supply did not turn on so system will not activate.

Case 3 :-

If power source = 1 and water source = 1, then both power supply and water supply will turn on , so system will be activate.

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.

Answer :

1. Create a chart and enter given inputs.

2. By using symbol pane assign the given variables.

3. Connect slider gane to varry speed .

4. Connect constant to varries conditions.

5. Display blockis used to display gear number.

Outputs for gear shift logic :-

Case 1 :-

If the key = 0 , then power will turn off, so gear mechanism will not activate.

Case 2 :-

If the key = 1 , then power will tuen on and so gear shifting mechanism will activate.

Case 3 :-

If the key = 1 and we change the speed by changing value in slider gain, speed will be increased.