Extend frequency response with dynamic compensator

[pdunc]

Hi guys,

First post so be nice Not sure if this is the correct section to post in? Seemed the most relevant.

I'm in the process of designing a dynamic compensator (inverse filter) which will be used to improve the response time of a temperature measurement system. This will work by extending the frequency of the response of the system.

I'm stuck during simulation, pretty close I think!

I will put the bode in a reply to this as I need 1 post for an image!

I have two issues at the moment; the traces do not exactly match so my transfer functions must be slightly off, also recieving an error when I attempt to convolve the two transfer functions

"c = conv2(a),b),shape);"

Transfer Functions:
system = 2/(0.5*s+1); comp = (-s-1)/(0.5 s + 1)

I realise this post is a bit vague, if you would like anymore information please ask.

Cheers,


Peter

 

[pdunc]

Here is the bode plot;

The green is the first-order system to be compensated, blue is the compensator. You can see then frequency components are summed (through convolution?) the overall response should be extended.

 

[Resqueline]

Growl! Arf!
J/k, welcome to the forum, and the subject is ok here.
Btw., don't you think your old math teacher would cringe if he saw what modern computer systems does to a formula..
I must admit that your problem is a bit over my head, I'm not that good at math & formulas & theory.
However, my initial question is; shouldn't you have only one node in the compensator, just like the system has?
What would something like this look like; comp= (0.5*s+1)/2. (I actually have no idea..)