# Order of system

by dhruv.tara
Tags: order
 P: 46 1. The problem statement, all variables and given/known data In control engg. we define the order of the system as (or atleast as far as I have understood as) Nu/s^m*(s+a)(s+b).... I cannot understand the base for such classification? Why are we classifying systems based on the number of poles they have on origin? 2. Relevant equations 3. The attempt at a solution
 P: 639 No, the order of the system is the number of poles (at the origin and elsewhere).
 P: 27 CEL is correct. Something to add however is the way you have written the transfer function - it's done for a purpose. In controls seeing how many poles are at the origin, you're s^m part of the denomenator, has many ramifications that can be crucial when interpreting a system response or designing for one. So in seeing, and perhaps formatting a transfer function in this fashion, it is an aesthetic move but can make things easier.
P: 46

## Order of system

thanks guys I was confusing myself with the order and type of the system... good I could get that clear just in time :)

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