Week -2

AIM: To do the Simulink model of Doorbell using solenoid block

condition: where the switch is closed for 2 seconds and then released. Observe the physical movement of the plunger.

Expilation:

in this simulink model we are using some blocke this are solanoid,ideal force sensor,battery,electricl refernce,ps switch, simuilnk ps converter,ps simulink converter,scope,step single,solver configuration, mechanical translation reference.

1.Ideal force sensor:The block represents an ideal force sensor, that is, a device that converts a variable passing through the sensor into a control signal proportional to the force with a specified coefficient of proportionality. The sensor is ideal since it does not account for inertia, friction, delays, energy consumption.

2.switch:The block represents a switch controlled by an external physical signal. If the external physical signal PS is greater than the threshold, then the switch is closed, otherwise the switch is open.

3.frist we taking the solenoid and '+' terminal conected to switch and switch second terminal conected 12v battery and battery negtive terminal conected to solenoid and solver confguration and electrical referince. Solenoid 'R' terminal will be conected to ideal force sensor a 'R' terminal and 'C' will be conected to solenoid throgh the mechanical translational reference and 'F' conected to scope through the PS-simuilk converter .

4.the step single is given to switch PS teriminal through the simuilk PS converter. when the step to give the simple time will give 2 second to run simulink the scope show the result.

Result:

#2.

AIM: Useing a thermistor to sense the temperature of a heater & turn on or turn off the fan as per the below conditions.

*Temperature source: 20 °C from 0 to 10 seconds, 27 °C from 10 to 30 seconds, 23 °C from 30 to 50 seconds.

*Fan conditions: ON if the temperature above 25 °C, OFF otherwise.

Expilation:

we are using simulink block are signal builder,simulink ps converter,solver configuration,controlled temperature source,thermisstor,battery,resistor, voltage sensor,ps-simulink converter,constant two numbers,switch,scope this block are used.

To set the input single as per given condetion to useing the single builder that input single is given to controlled temperature source throught the simulink converter and controlled temperature terminal A will be conected to thermistor A terminal and the termistior haveing two terminal this are postive terminal conected to batteryand negtive terminal will be conected to resistor and voltage source will be conected to bipass of the resistor when the voltage source output will be conected switch through the PS simulink converter the switch is bellow 25dec teperature the switch conected to conestant 1 and above 25dec temprature the will be conected to constant and the fan will be on and below 25dec the fan will off see results .

Input

Output

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