From 9d25816f4b5e5a6a3a00cbc37e2208be8659f63a Mon Sep 17 00:00:00 2001 From: Dane Sabo Date: Wed, 16 Oct 2024 16:47:45 -0400 Subject: [PATCH] vault backup: 2024-10-16 16:47:45 --- 4 Qualifying Exam/2 Writing/2. QE State of the Art.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/4 Qualifying Exam/2 Writing/2. QE State of the Art.md b/4 Qualifying Exam/2 Writing/2. QE State of the Art.md index 0c1729f6..0f1cc1e9 100644 --- a/4 Qualifying Exam/2 Writing/2. QE State of the Art.md +++ b/4 Qualifying Exam/2 Writing/2. QE State of the Art.md @@ -29,7 +29,10 @@ b_{min} \leq b +e_b \leq b_{max} \\ k_{min} \leq k +e_k \leq k_{max}} $$ where $e_m$ is the difference between the nominal mass and the actual as-built mass. $e_b$ and $e_k$ follow similar logic. Structured perturbations are easy to use to create perturbed plants: simply pick values for $e_m$, $e_b$, and $e_k$ that are within the allowable bounds and plug them in to create a new, perturbed transfer function. -Structured perturbations do suffer from a limit +**Limitation:** *Structured perturbations limit the form of perturbation possible to sample.* Because structured perturbations either are chosen a priori or through a parametric study, the form of possible perturbed plants is limited. Structured perturbations do not allow for unmodelled dynamics to be included as a possible perturbation. + +The other type of uncertainty considered is unstructured uncertainty. This type of uncertainty does not assume a form + (The disk multiplicative perturbation) (Explain how actually getting to W_2 isn't really trivial). \ No newline at end of file