Week - 4 IMPLEMENT  CONTROL LOGIC OF A "WASHING MACHINE" USING STATEFLOW AS PER GIVEN SEQUENCE

IMPLEMENT CONTROL LOGIC OF A "WASHING MACHINE" USING STATEFLOW AS PER GIVEN SEQUENCE.

AIM:

1Q.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

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.

PROCEDURE:

WORKING PRINCIPLE OF WASHING MAACHINES.

A Washing machine by spinning at 800-1600rpm help soaps and dirt with it is leave the surface of the cloth via centrifugal force clean and partically dry the clothes loaded in it such as the drum values pump motors and heating. the valve opens again the pump works to help get rid of the water the valve lets clean water in again into the drums the four prcesses are

1.SOAKING :it is used to dip clothes indetergent water to remove dirt from the clothes.In this function customer need to select soak from a panel-soak. this function is available with wash timer. In 42 mins of washing 27mins is soak and 15mins machine will wash the clothes.

2.WASHING:During the wash cycle a large plastic agitator (green) turn around moving your clothes through the water when t5he wash is finished the pump drains the water from the outer drum.

3.RINSING:The dirty soapy water is drained then the washing machine is refilled and your clothes are rewashing in clean water spin all the water is drained completely then your clothes are span very fast and excess water is removed thanks to centrifugal force.

4.DRYER:They work by pushing warm dry air through your wet washing to extent mositure then cooling the now humid air in a heat exchanger to condenser the moisture which is collected in a tank or pumped down the drain. the air is reheated and the cycle repeats.

STATEFLOW:

Systemtic solution of a problem is possible with sequential unambiguous and realizable finite process step set.this set is called algorithum and it is one of the most important part of the programming languages .In this study it is represented how to learn algorithm by using simulink stateflow .In flow diagram based algorithm learning.

CONTROL LOGIC OF A WASHING MACHINE:

It checks for thw extent of dirt and grease the amount of soap and water to add direction of spin and so on.the machine rebalances washing load to ensure correct spinning else it reduces spinning speed if an imbalances is detected even distribution of washing load reduces spinning noise.

the two inputs are given for the power and water supply once the inputs are given outputs are displayed by the flow chart as per the given sequence. the system are observed for sometime then it is process is completed by green light as displayed.

2Q. A gear shift machanism for a manual transmission includes a shaft axially movable for selecting shift planes and rotatable for engaging the gears defining the shift plane.the shaft is held in a reference by two helical springs.

RESULTS:1.Thus the control logic of a washing machine using state flow is processed as per the givem sequence and LED lights are turns to the green colour and the system is completed.

2.A simulink model is created for the gear shift logic and using slidergun the values are obtained.