This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 1 CHEE 455 Process Control MidTerm Exam #1 Winter 2009 15% of final grade Process Modelling and Dynamic Behaviour of Simple Processes Allowed: Pens, pencils, and calculators 3 pages of questions, with an appendix containing useful information 30 points total 1.) D ( s ), E ( s ), and F ( s ) below are all secondorder transfer functions. One of them is underdamped, one is critically damped, and one is overdamped. 2 . 4 . 2 4 . 6 2 . 3 ) ( 2 + + = s s s D 2 2 1 2 2 2 5 ) ( + + + = s s s s E ) 1 3 ( ) 2 3 ( 3 2 ) ( + = s s s s F a.) [1 point] Write each of these transfer functions in the form 1 ) ( 2 + + = bs as K s G b.) [2 points] Identify which transfer function is underdamped, which is critically damped, and which is overdamped. c.) [1 point] For the overdamped transfer function, find the exponential time constants ( 1 and 2 ) which would appear in the time domain solution for the response to a step input. d.) [1 point] For the critically damped transfer function, find the exponential time constant ( ) which would appear in the time domain solution for the response to a step input. e.) [1 point] For the underdamped transfer function, identify the values of and (the symbols used for writing second order transfer functions in standard form)....
View
Full
Document
This note was uploaded on 04/06/2010 for the course CHEE CHEE455 taught by Professor Markquinn during the Winter '09 term at McGill.
 Winter '09
 MarkQuinn

Click to edit the document details