Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
PID Control Case Study – Balanced beam demonstration
Member rating: No Rating | Words: | Submitted: Tue Mar 15 2005
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
PID Control Case Study - Balanced beam demonstration 1.0 Introduction In order to demonstrate the capabilities of the AN20, a PID (Proportional, Integral Differential) control loop has been created to balance a weighted beam. The balanced beam consists of a Perspex bar (beam) pivoted roughly in the middle. (See Diag.1). At one end a mass is attached, and at the other a metal disc. When current flows in the coil, the disc accelerates, causing the angle of the beam to change. An LED and photodiode are used to sense the position of the beam. Diag.1 - Balanced beam. The control loop, is required to force the correct current, in order to exactly balance the beam. 2.0 Control theory In order to stabilise the beam, a loop-filter must be designed and placed, as shown below (Diag.2). In order to establish what properties the loop-filter requires, it is necessary to calculate the gain of each element within the loop. Remember that the...
To see the full version of this document, and 145,348 others
