EMC 322: Automatic Control

Assignment 1: Float Regulator MechanismGroup: M16

1)The Floating Ball and LeverWater in the tankThe Pivoted LeverThe Lever

2) Components in Float Regulator:1. Pivot2. Lever3. Hollow ball4. Water tank3) Working Principles of Float Regulator:It consists of a valve connected to a hollow sealed float by means of a lever, mounted near the top of the tank. The float is often ball-shaped. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it, once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow.

4) Experiment of Float Regulator mechanism:

i) Without turn the setting screw for 3 turns clockwise direction

ii) With turn the setting screw for 3 turns clockwise direction

Discussions:Turn the screw clockwise to raise the float at the end of the arm and increase the amount of water required to shut off the valve, or turn the screw counter clockwise to lower the arm and decrease the amount of water required to shut off the valve. So, without turn the setting screw for 3 turns clockwise direction needed less time to filled up the tank compare to the with turn the setting screw for 3 turns clockwise direction, its can observed from the graph above.