Controls Laboratory

Overview

The Controls Lab is situated in the Engineering Building (Tech 210) of University of Bridgeport. This lab is used for both instruction and research. Currently, the lab has three stations:

  1. Process Control Station
  2. Mixing Station
  3. Inverted Pendulum

For a brief introduction to the controls lab, please check us out at youtube .

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Process Control Station

The Process Control Station combines 4 closed loops with digital and analog sensors and actuators. With a PLC or a controller it is possible to use them individually or cascaded:

  • Level control System
  • Flow rate control System
  • Pressure control System
  • Temperature control System

1

Figure above: Process Control Station

Festo PLC

Festo PLC can be programmed to control fluid level, flow rate, temperature and pressure without manual intervention.

2

Figure above: Festo PLC

Mixing Station

The mixing station consists of 3 small holding tanks and a mixing tank. The medium is pumped from the holding tanks to the mixing tank using a pump and 3 process valves. The missing station can be use as part of an automated system. This station is controlled by means of a digital/ analog simulation box; digital/ analog Easyport and Fluidlab (computer); or PLC (Siemens) with touch panel.

3

Figure above: Mixing Station

Siemens PLC

The PLC can be programmed to mix the fluids according to various recipes. A touch screen panel is used to activate the system along with the PLC.

4

Figure above: Siemens PLC

Linear Inverted Pendulum

Inverted pendulum system is a nonlinear unstable system, an ideal experiment platform for teaching control theories and conducting various control experiments. Many abstract control concepts, such as the stability and the controllability of a control system, can all be shown visually through the inverted pendulum system.

5

Figure above: Linear Inverted Pendulum