Week - 4

WORKING PRINCIPLE OF A WASHING MACHINE

A washing machine by spinning at 800-1600 rpm helps soap & dirt with it to leave the surface of the cloth via centrifugal force& into outlet pipes hence utilizing centrifugation to both clean & partilly dry the cloths loaded in it. the process are electrically controlled the drum valves,pump,motor & heating .the valve opeans again and the dirty water drains out of the drum.the pump works to help get rid of the water.the valve lets clean water in again into the drum.

SOAKING

it is used to dip cloths in detergent water to remove the dirt form the cloths . this function customer need to select soak from a panel.the function is available with wash timer in 30 min of washing 25 min is soaking & 15 min machine will wash the clothes.

WASHING

dring the wash cycle a large plastic agitator turns around moving our clothes through the water . when the wash is finished the pump drains the water from the outer drum.

RINSING

the dirty soapy water is drained then the washing machine is refilled & our clothes are rewashed in clean water spin all the water is drained completely the our clothes are spun very fast and excess water is removed thanks to centrifugal force.

DRYER

they work by pushing warm dry air through our wet washing to extract moisture then cooling the the now humid air in a heat exchanger to condence the moisture which is collected ina tank or pumped down the drain the air is reheated & the cycle repeats.

1. STATEFLOW

systematic solution of a problem is possible with sequential unambiguous & realizable finite process step set. this set is called algorithm & it is one of the most important part of the programming languages this study 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 the extent of dirt & grease the amount of soap & water to add direction of spin & so on the machine rebalances washing load to ensure correct spinning speed if an imbalance is detected

the two inputs are given for the power and water supply once the input are given output are displayed by the folw chart as per the given sequence the system are observed for sometimes it is cheacked and the process is completed by green light is displayed.

GEAR SHIFT LOGIC

a gear shift mechanism for a manual transmisson includes a shaft axially movable for selecting shift plans and rotatable for engaging the gears defining the shift planes the shaft is held in a reference shift plane by two helical spring.

RESULT

1. Thus the control logic of washing machine using stateflow is processed as per the given sequence and LED lights are turns to green color and the system is completed.
2. a simulink model is created for the gear shift logic and using slider gain the values are obtained.