Week -2
- Make a Simulink model of Doorbell using solenoid block with the following details:
a)From the question itself we understand we will need some electrical and mechanical simulink blocks
b)so to make the following door bell using simulink blocks we will add few blocks to our model which are as follows
battery,solenoid,scope,pulse generator,ps simulink converter,simulink ps converter,solver configuration ,switch etc.
c)according to the question we need the switch closed for 2 seconds so we add a pulse converter in which we can set the delay and manipulate the input
therefore pulse width is 50%of period(4)which is 2 seconds
result for scope with pulse generator
conclusion:
we can clearly see from the scope results that after every 2 seconds the switch is closed and the solenoid receives current from the battery and hence plunger hits the bell and sound is produced.
Use 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
a)From the requirement we can understand that we need model with electric and thermal properties to sense tempreture ,turn off and on the fan
b)there are many number of blocks used in this model such as thermistor,voltage sensor ,tempreture and electrical reference
solver configuration ,resistor,switch,constant blocks etc
c)we use to repeating stair sequence to feed input to the thermistor and from there voltage is sensed
