From 55eb76aae35d89593c0430c6d2ef8451440f7866 Mon Sep 17 00:00:00 2001 From: Dane Sabo Date: Thu, 29 Aug 2024 17:21:37 -0400 Subject: [PATCH] vault backup: 2024-08-29 17:21:37 --- .obsidian/workspace.json | 4 ++-- 4. Qualifying Exam/2. Writing/QE Abstract.md | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json index 742e67aa..2c1c5067 100755 --- a/.obsidian/workspace.json +++ b/.obsidian/workspace.json @@ -180,9 +180,9 @@ }, "active": "3c8fa3261c26a8f5", "lastOpenFiles": [ - "4. Qualifying Exam/1. Managing Stuff/QE Tasks and Details.md", - "4. Qualifying Exam/2. Writing/QE Abstract.md", "3-99 Research/6. Researching Techniques/Highlighting Colors and What they Mean.md", + "4. Qualifying Exam/2. Writing/QE Abstract.md", + "4. Qualifying Exam/1. Managing Stuff/QE Tasks and Details.md", "QE Abstract Take 1 Edits.md", "1. Daily Notes/8. August/2024-08-29.md", "300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md", diff --git a/4. Qualifying Exam/2. Writing/QE Abstract.md b/4. Qualifying Exam/2. Writing/QE Abstract.md index 870ad3a0..7f4d1a7c 100644 --- a/4. Qualifying Exam/2. Writing/QE Abstract.md +++ b/4. Qualifying Exam/2. Writing/QE Abstract.md @@ -42,4 +42,6 @@ We can know the set of allowable plants that our controller can command, and we What we cannot do is easily validate our guarantees on a real controller. While we have been able to find the set of perturbed plants for decades, being able to create and test a controller with elements from that set is by no means trivial. -The most common way of accomplishing this task today is by using structured uncertainty. \ No newline at end of file +The most common way of accomplishing this task today is by using structured perturbations, where an engineer traces throughout the system where uncertainty comes from and then establishes probability density functions for each uncertainty, culminating in a probabilistic model that can be sampled to create elements of the set. +This is an expensive way to create perturbations. +The other way is by using unstructured perturbations. For this method, some transfer function $\delta$ with a maximum gain is used to augment the nominal plant model. \ No newline at end of file