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

ans: 

      A wahing machine is a machine used to wash the variousntypes of cloths without putting any physical efforts. With a washing machine, you don't have to rub the clothes with your hand or squeeze themm to remove the water from them. washing machine is works automatically without having any supervising after the switch on the supply. 

stages of washing machine:

let us now under go the stages of a washing machine which in turn helps you to understannd better about the washing machine.

• Prewash: The option called prewash indicated filling the drum with a certain water level and mix up the detergent powder. all this option helps to wash out all the stains including the stubborn or dirt very well from the clothes. this is possible as we soak the whole clothes placed into the drum. finally, drain the water without making a second thought.
• washing: At this particulat time, the machine uses agitation which is for mixing both water and detergent, in turn moving the clothes all round the drum. Fenerally, the top load washing machines come with an agitator or impeller placed at the center of the tube. while coming to front load washers, it depends upon the rotation of the entire tub provided for enhancing better wash and cleaning the load ultimately. moreover, the duration taken to complete the wash cycle is depends upon the setting option chosen by the user.
• rinsing: The multi-talented option. During this particular cycle is on the flow, the soapy water taken fron the clothes. And all the fresh or pure water us sparked to the cothing available in the tub. this particular rinse option held responsible for taking soapy water out of the washer without facing any kind of difficulties.
• spinnig: Spinning is done to dry the entire clothes before getting to the end of the actual wash cycle. And these several washing machines are going to be spin at different speeds. In turn, the speed of one particular spin is calculated in rpm respectively. this indicates the speed of the spin extracting the whole amount of water from the clothes making it dry very well.

modeling of washing machine in simulink:

these are the followibg this we need for modeling the sub system of washing machine logical block settings.

1. constant

2. state flow chart

3. lamps 

4. displays.

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 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.  

Ans:

       The trasmission operation mechanism:

To effect a gear change, selecting first gear, for example, the driver depresses the clutch, disengaging the input shaft. using the shift lever, the driver selects the first gear, and the linkage moves the shift fork to conect the 1st -2nd locking collar with 1st gear, locking it to the output shaft. Now, when the clutch is released, engaging the input shaft the output shaft turns because 1st gear is locked to the output shaft by the locking collar.

As the driver speeds up, slecting 2nd gear simply involved repeating the process, but moving the shift lever to 2nd gear. the shift shaft moves the shift fork to disengage 1st gear ad engage 2nd gear. Releasing the clutch engages the input shaft again, this time riuting power through 2nd gear. Changing to 3rd gear involves using a second shift linkage, shift fork, and locking collar, this one between 3rd and 4th gears.

before we go into the simulink for the transmission box simulation need to follow the below conditions for the setup.

Speed Range(kmph)        Gear 

              0 to 15                         1

             16 to 25                        2

             26 to 40                        3

             41 to 60                        4

             Above 61                       5 

and by doing so we do that in a coded pattern in the state flow chart.

these are the following block setup did we need for the setip:

1. state flow chart

2.slider

3. constant

4. Display

5. lamps

6. slider switch