Challenge

Week -2

Answers

Objective

In this challange we make a simulink model of old style electromagnetic Doorbell and analysis movement of plunger whene battery voltage is apply.

Explaination

For making simulink model of electromagnetic Doorbell we first use solenoid block
After placing solenoid block study parameter of solenoid block.
Then operate solenoid electrically we place battery and switch.
After completing this circuit place Ideal Motion Sensore to mesure motion of plunger.
Output signal of IdealMotion Sensore is provided to Physical System to Simulink converter and after this signal is go to scop for further analysis.
After completing all of this step provide physical signal to switch for open and close electrical circuit.
For generating this signal use Signal Generator block and Simulink to Physical System Converter.
By using this blocks we produce physical signal of on and off for electrical switch.
After completing all the process we run the simulation for 10 seconds and analysis the results.
For the simulink file click hear "Elrctromagnetic Doorbell Simulink File".

Observation

For input voltage is less then rated input voltage plunger movement is shoen in the fig.
For low input voltage elctric current is low.
Because of low electric current electromagnetic force is low so oscillation is created in plunger in both on and off condition.

For input voltage is equal to then rated input voltage plunger movement is shoen in the fig.
For rated input voltage elctric current is sufficient to produce requred amount of electromagnetic force.
Because sufficient electromagnetic force oscillation is created in plunger in only free side.

Objective

Disign of simulink model for temprature controlled fan.

Explaination

For making this model we use signal builde block and make temprature signal from given data.
After generating signal this signal is converted to simulink to physical system converter
Then this signal is fed to controlled temprature source.
This temprature source is connrctrd between thermal refrence and temprature mesurment.
For mesuring this temrature we use temprature mesurment block.
mesured temrature signal is fed to physical system to simulink converter.
After converting this signal, signal is fed to switch.
This switch is work as a comparator.
When input temprature value is above 25 degree celcius then switch turn on the fan.
For the simulink file click hear "Temprature Controlled Fan Simulink File".

Results

Ship work like this
in your own course.