Week -2
- Make a Simulink model of Doorbell using solenoid block with the following details:
Principle of Dorebell:
The solenoid is an electromagnet with wire winding and small metal piston inside it. When electric current flows through the wire, an electromangnetic field is generated which pulls the metal piston toward it. The metal piston hits the tone bar located on both sides of the arrangement.
Blocks Used in Model:
Pulse Generater:
Pulse generator is analog inpute with amplitude and frequency.
PS-Simulink and Simulink-PS Convertor:
These are the besically convertor, from physically system to simulink signal and vice-versa.
Scope:
Scope is use to give output and input plot .
Electric and Mechnical Referenace:
Referenace block with which the system has a ground sourse as a base.
Battery:
Battery is input sourse for electric circuit.
Solenoid:
It is an electromagnatic device.
Switch:
It is electric switch to complete or break the electric circuit.
Ideal Translated Motion Sensor:
It is a device to detec translet motion (Position) sensor or velocity input for the system to generate output.
Solver Configuration:
It is type of block that act as a complete equation for where F(X)=0.
When the switch is closed the electromagnet receives electrical power from the battery and pulls the metal arm to hit the bell producing sound.
Create a situation where the switch is closed for 2 seconds and then released. Observe the physical movement of the plunger.
Simulink Model:
Output:
Input:
2. Use a thermistor to sense the temperature of a heater & turn on or turn off the fan as per the below conditions:
Thermistor:
Thermistor is thermal resistor whose electric value changes with temperature. Also other resistor value changes with temperature, But thermistor value is more sensetive with temperarure.
Following are the aaplied condition:
1) 0 to 10 sec Temp. is 293
2) 10 to 30 sec temp is 300
3) 30 to 50 sec temp value is 296
(All temp. are in Kelvine.)
Fan conditions: ON if the temperature above 25 °C, OFF otherwise.
Block Use in Model:
Signal Builder:
To provide a signal according to condition.
Controlled Temperature Sourse:
To provide a temperature physical output base on the condition.
Volatge Sensor:
To measure voltage accross electrical component.
Battery;
Battery is input sourse for electric circuit.
PS-Simulink and Simulink-PS Convertor:
These are the besically convertor, from physically system to simulink signal and vice-versa.
Scope:
Scope is use to give output and input plot .
Electric and Thermal Referenace:
Referenace block with which the system has a ground sourse as a base.
Solver Configuration:
It is type of block that act as a complete equation for where F(X)=0.
Following is the simulink model and there out put as per the condition. The Resistor value is 1ohm.
Simulink Model:
Signal Builder:
Output:
