Week - 4

Aim:

Question 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

Simulink Model:

Explanation:

• Firstly in a new simulink model pick out the tool called "chart" from state flow.
• Then double click on the chart. After entering that chart insert required amount of states and give our condetions like shown in the second figre.
• First two state is for checking power input other two is for checking water inputs. After these crosses all the cleaning process will run and finishes all the process
• Next specify the data type in the symbols pannel
• Afterwords came back to simulink and give all the input and output as per the first figure.
• Run these process for 500 seconds

Observations:

case 1

power and water off

power lamp shows red colour other process will not run

case 2

power on but water off

power lamp shows green and water lamp shows red.

case 3

power and water on

power lamp shows green and water lamp shows green so all other process will run and shows tick marks.

Question 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:

Simulimk Model

Simulink Model explaination:

• Firstly in a new simulink model pick out the tool called "chart" from state flow.
• Then double click on the chart. After entering that chart insert required amount of states and give our condetions like shown in the second figre.
• Then specify input and output data.
• After that runn the model for infinite time.

Observations:

When running the simulation move the curser for changing the speed. When conditions reaches we can see that gear the gear changes and also can seen in the display.