Load disturbance sensitivity function in control loops

Started by February 8, 2019
Hi,

I'm a bit confused about the load disturbance sensitivity function in control loops.
Basically, I have a design where the load disturbance sensitivity function has a
maximum of 5 at a frequency of 300 Hz.

I'm not sure I understand this metric correctly. Does it mean that a load variation
of 10% at a frequency of 300 Hz would create a variation 5 times higher on the
output?

The formula is P/(1+PC) where P is the transfer function of the process and C the
transfer function of the controller

Regards