Week - 4

1.Implement control logic of a “washing machine” using Stateflow:

Model:

• The blocks used in this model is constant block,Chart block,Display block and Lamp.
• we use two constant block as inputs one is for power supply and other one is for water supply.
• we use seven Display blocks to show the value of the outputs same as well we use seven Lamp(LED) to indicate ON adn OFF of the system.
• In Lamp Green light indicate's the system gets Activated,Red light indicate's system gets Deactivated.
• The Stop time is given as 500 sec.

Condition:

• Soaking time should be 200s followed by Washing time of 100s.
• Then rinsing happens for next 20s & dryer runs for 50s.

As per the given condition the chart is created.

• Stateflow is the simulink tool to implement the state machine.
• Inside the Chart we use state machine there are source state, Power state, Water state, Soaking state, washing state,Rinsing state, Drying state and End state.
• In between source state and Power state we use two conditions to the given inputs,there are [power==1][power==0].
• In between power state and Water state we use two conditions to the given inputs,there are [water==1][water==0].
• If condition is 1 the system is Activeted to the process,If condition is 0 then the system is Deactiveted and the process is stoped.
• Then the rest of the state's are Activeted when the condition is 1 for Water state.
• Power state and Water state are the inputs,rest states are outputs set inside the chart by "Symbles pane"

Output:

• If the power supply is available, the system gets activated.

Heare the both power supply and water supply inputs is given as value=1,so the system get activeted.

• If the Water supply is not available, stop the process & indicate through LED,the result is shown below:

Heare the Water supply input is given as value=0 the lamp(LED) indicate"s Red color, so without Water supply the process is stoped only the power supply is in ON.

• After all the processes have completed turn on the finished LED,the result is shown below.

After all the processes have completed The lamp is turned on as Blue color.

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

Simulink chart for the Gear shift logic:

• If The key=0,then the power is OFF,lamp indicates Red color and Gear Shift mechanism will not be active.

• If the key=1,then the power is ON,lamp indicates Green color and Gear Shift mechanism will active.

• In this model we use constant block,Slider Gain block,chart block ,display block and Lamp.

Output:

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

Case 1:

• The stop time is given as "inf"
• Slider Gain block [speed Range(Kmph)] is used to vary the speed while running the simuliation.
• Start running the model and By varying the Speed as "11 Kmph" to the Slider gain(Parameters),so the gear position is change to "1" and stop the running model.
• For 1st Gear the given condition of Speed Range(Kmph) is between "0 Kmph-15 Kmph".

Case 2:

• The stop time is given as "inf"
• Slider Gain block [speed Range(Kmph)] is used to vary the speed while running the simuliation.
• Start running the model and By varying the Speed as "19 Kmph" to the Slider gain(Parameters),so the gear position is change to "2" and stop the running model.
• For 2nd Gear the given condition of Speed Range(Kmph) is between "16 Kmph-25 Kmph".

Case 3:

• The stop time is given as "inf"
• Slider Gain block [speed Range(Kmph)] is used to vary the speed while running the simuliation.
• Start running the model and By varying the Speed as "27 Kmph" to the Slider gain(Parameters),so the gear position is change to "3" and stop the running model.
• For 3rd Gear the given condition of Speed Range(Kmph) is between "26 Kmph-40 Kmph".

Case 4:

• The stop time is given as "inf"
• Slider Gain block [speed Range(Kmph)] is used to vary the speed while running the simuliation.
• Start running the model and By varying the Speed as "45 Kmph" to the Slider gain(Parameters),so the gear position is change to "4" and stop the running model.
• For 4th Gear the given condition of Speed Range(Kmph) is between "41 Kmph-60 Kmph".

Case 5:

• The stop time is given as "inf"
• Slider Gain block [speed Range(Kmph)] is used to vary the speed while running the simuliation.
• Start running the model and By varying the Speed as "78 Kmph" to the Slider gain(Parameters),so the gear position is change to "5" and stop the running model.
• For 5th Gear the given condition of Speed Range(Kmph) is "Above 60".