Week - 4

Ans1

Aim- Implementation and 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 been completed turn on the finished LED

Required elements-

     1 Constant block, Stateflow chart, display, lamp

Block diagram picture of washing machine-

procedure-

   1 Take a Stateflow chart and open it after opening take 8 states and connect them as shown in the above figure

   2 I have implemented all the conditions as shown in the picture as

     (i) power present or not

     (ii) water present or not

     (iii) I have given the 200-sec delay in soaking.

     (iv) I have given a 100-sec delay in washing.

     (v) I have given a 20-sec delay in rinsing.

     (vi) I have given a 50-sec delay in drying.

3 I have made input sections as water and power and output section as 

  power_check, water check, soaking, washing, rinsing, drying, finish, water not present, power not available.

4 I have given run time as 800 sec.

5 I have saved the program.

6 I have the program

Result-

Implemented the control logic of a “washing machine” using Stateflow as per given condition I have got the proper sequence of output as

     (i)power check, (ii)water check, (iii)soaking dealy till 200-sec, (iv)washing till 100-sec, (v)rinsing till 20-sec, and then (vi)finish.

output result screenshot

Ans 2

  Aim-  Implementation of Simulink chart for the “Gear shift” logic as per below conditions:

           Speed Range(km)        Gear 

              0 to 15                         1

             16 to 25                        2

             26 to 40                        3

             41 to 60                        4

             Above 61                       5 

              and display it to the screen.

Required elements-

           1 constant block, slider gain, Stateflow chart, display

Block diagram picture-

procedure-

1 Take a Stateflow chart that takes 6 states and connect them as shown in the picture. Name as 

   1  start

   2  gear1=1

   3  gear2=2

   4 gear3=3

   5 gear4=4

    6 gear5=5

2 keep the first state name as a start, the second state as gear one and give conditions as x>0 for outflow and x<0 for inflow.

3 Second state is connected to the third state and give the condition as x>15 for outflow and x<15 for inflow.

4 Third state is connected to the fourth state and give the condition as x>40 for outflow and x<40 for inflow.

5 Fourth state is connected to the fifth state and give condition as x>60 for outflow and x<60 for inflow.

6 Connect a constant block to the input x through slider gain.

7 Connect a display to an output of Stateflow value, as shown in the above picture.

Result-

I have got the output gear changed as speed x is being changed while using slider gain.

when x= 27 we got the gear=3

when x=63 we got the gear=5

as continue.