Week -2

1.The model is developed in Simulink environment and the the physical motion of the plunger is analysed.The motion of port R from port C of the plunger under the excitation provided from the switch is realized as a plot over the duration of 20sec.Files are attached for reference.

The input to the switch will be a pulse generator with the period of 4sec ,the pulse width is set to 50% of the time period for creating a situation for turning ON for 2 sec and then released.The position can be obtained from ideal mechanical sensors.The plunger is nothing but a soleniod supplied with a nominal battery voltage of 12V.Physical systems and simulink systems can be interconnected with PS -Simulink converter blocks.Solver must be configured for physical system input blocks(switch input in this case),and model must contain references for electrical and mechanical systems.

2.The above temperature conditions are realized in sequence stair block and is fed as input to controlled temeperature source and to the thermistor.PS - Simulink block must be configured for calculating the derivatives.In order to calculate the threshold for the switch controlling the fan, a resistence is connected and the voltage across it is measured with a votage sensor block and is kept as the threshold for the switch..Switch is configured in such a way that whenever the threshold is reached,fan is enabled.A DC motor powered by DC voltage is used to represent the fan and the angular velocity of the fan and the temperature plot is generated to understand the controlling operation.

Attaching all the necessary documents