Week -2

Challenge 1-Listed blocks where used to create the model.

1. Signal Builder

2. Solenoid

3. Battery

4. Ideal tranlational motion sensor

5. Electrical and mechanical references

6. Solver configure

7. Display and scope

8. Convertors

To create required situation in simulink model, signal builder block was used and signal was replicated as per problem requirement. This signal was then given to battery via switch and simulink to ps convertor, further battery was connected to solenoid, and to sense the plunger translational motion ideal translational motion sensor was used. Output of this sensor are given to a scope(Plunger position) and display (Translational velocity) blocks.

Challenge 2-Listed blocks where used to create the model.

1. Signal Builder

2. Constant Temperature Source

3. Thermister

4. Dc Voltage Source

5. Voltage sensor and current sensor

6. Product block

7. Switch

8. Constant volatge source

9. DC motor

10. Ideal rotational sensor

11. Convertor

12. Display and scope

13. References and solver

Firstly the required temperature condition was created with the help of signal builder block, with help of excel import building a signal is quiet simple in simulink block. This signal was given to temperature source, which is further connected to thermister. Thermister circuit consist of voltage source, current sensor and voltage sensor whose outputs are given to product block- According to Ohm's law voltage is directly proportional to current, using same principle resistance against each temperature value was measured with help of this circuit. Output of this product block was given to a switch whose trigerring threshold value was set equal to value corresponding to 24 degree celcius, in order to model fan DC motor circuit was used. This circuit consists of DC motor, controlled voltage source and ideal rotational sensor. Output of this circuit is shown with help of scope and display.