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2 Commits
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a55d1a2686
| Author | SHA1 | Date | |
|---|---|---|---|
| a55d1a2686 | |||
| cd9437a067 |
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{"description":"Read Branicky Lyapunov paper","entry":"20250911T183429Z","modified":"20250911T200147Z","project":"Thesis","start":"20250911T200147Z","status":"pending","uuid":"f4d32147-ec74-4f68-b8d5-146c0b6f35df","tags":["reading"]}
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{"description":"Read Branicky Lyapunov paper","entry":"20250911T183429Z","modified":"20250911T200147Z","project":"Thesis","start":"20250911T200147Z","status":"pending","uuid":"f4d32147-ec74-4f68-b8d5-146c0b6f35df","tags":["reading"]}
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{"description":"Write first draft of state of the art","due":"20250912T040000Z","entry":"20250909T203258Z","modified":"20250911T200235Z","project":"ERLM","status":"pending","uuid":"4bec1530-18bc-43cb-9f0b-61e35dbf1730","tags":["writing"],"depends":["8e7a8e19-9197-4008-b7d9-521ffcf7ba91","96c76e6b-5c33-4f54-a156-5c59e718f01a","f4d32147-ec74-4f68-b8d5-146c0b6f35df"]}
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{"description":"Write first draft of state of the art","due":"20250912T040000Z","entry":"20250909T203258Z","modified":"20250911T200235Z","project":"ERLM","status":"pending","uuid":"4bec1530-18bc-43cb-9f0b-61e35dbf1730","tags":["writing"],"depends":["8e7a8e19-9197-4008-b7d9-521ffcf7ba91","96c76e6b-5c33-4f54-a156-5c59e718f01a","f4d32147-ec74-4f68-b8d5-146c0b6f35df"]}
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{"description":"Read Branicky Lyapunov paper","entry":"20250911T183429Z","modified":"20250911T201816Z","project":"Thesis","status":"pending","uuid":"f4d32147-ec74-4f68-b8d5-146c0b6f35df","tags":["reading"]}
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{"description":"Read Branicky Lyapunov paper","entry":"20250911T183429Z","modified":"20250911T201816Z","project":"Thesis","status":"pending","uuid":"f4d32147-ec74-4f68-b8d5-146c0b6f35df","tags":["reading"]}
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{"description":"Read Branicky Lyapunov paper","end":"20250914T153618Z","entry":"20250911T183429Z","modified":"20250914T153618Z","project":"Thesis","status":"completed","uuid":"f4d32147-ec74-4f68-b8d5-146c0b6f35df","tags":["reading"]}
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{"description":"Write first draft of state of the art","due":"20250912T040000Z","entry":"20250909T203258Z","modified":"20250914T153645Z","project":"ERLM","start":"20250914T153645Z","status":"pending","uuid":"4bec1530-18bc-43cb-9f0b-61e35dbf1730","tags":["writing"],"depends":["8e7a8e19-9197-4008-b7d9-521ffcf7ba91","96c76e6b-5c33-4f54-a156-5c59e718f01a","f4d32147-ec74-4f68-b8d5-146c0b6f35df"]}
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{"description":"Write first draft of state of the art","due":"20250912T040000Z","entry":"20250909T203258Z","modified":"20250914T213328Z","project":"ERLM","status":"pending","uuid":"4bec1530-18bc-43cb-9f0b-61e35dbf1730","tags":["writing"],"depends":["8e7a8e19-9197-4008-b7d9-521ffcf7ba91","96c76e6b-5c33-4f54-a156-5c59e718f01a","f4d32147-ec74-4f68-b8d5-146c0b6f35df"]}
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@ -1,3 +1,4 @@
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[description:"Read Branicky Lyapunov paper" end:"1757864178" entry:"1757615669" modified:"1757864178" project:"Thesis" status:"completed" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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[description:"Follow up with Daniel about controls bootcamp" due:"1757563200" end:"1757618582" entry:"1757449130" modified:"1757618582" project:"FSAE" status:"completed" uuid:"3eaadead-4e5e-4823-9077-16d6e1800862"]
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[description:"Follow up with Daniel about controls bootcamp" due:"1757563200" end:"1757618582" entry:"1757449130" modified:"1757618582" project:"FSAE" status:"completed" uuid:"3eaadead-4e5e-4823-9077-16d6e1800862"]
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[description:"Follow up with Bajaj about writing TurboSAR paper" due:"1757563200" end:"1757618582" entry:"1757449286" modified:"1757618583" priority:"L" status:"completed" uuid:"fa2699f9-0082-433e-ae0d-cc2553db9865"]
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[description:"Follow up with Bajaj about writing TurboSAR paper" due:"1757563200" end:"1757618582" entry:"1757449286" modified:"1757618583" priority:"L" status:"completed" uuid:"fa2699f9-0082-433e-ae0d-cc2553db9865"]
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[description:"Write outline for state of the art" due:"1757476800" end:"1757516746" entry:"1757443175" modified:"1757516746" project:"ERLM" status:"completed" uuid:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91"]
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[description:"Write outline for state of the art" due:"1757476800" end:"1757516746" entry:"1757443175" modified:"1757516746" project:"ERLM" status:"completed" uuid:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91"]
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@ -2,7 +2,6 @@
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[description:"Write zettels about webofscience database" entry:"1757443242" modified:"1757443242" project:"zk" status:"pending" uuid:"9cb17c85-f1e6-4280-86da-a5af8f229b15"]
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[description:"Write zettels about webofscience database" entry:"1757443242" modified:"1757443242" project:"zk" status:"pending" uuid:"9cb17c85-f1e6-4280-86da-a5af8f229b15"]
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[description:"Look over obsidian tasks and see if anything is worth moving over" entry:"1757443262" modified:"1757443262" status:"pending" tags:"taskwarrior" tags_taskwarrior:"x" uuid:"c1a5390d-5b84-4f9c-8acb-ffb970682660"]
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[description:"Look over obsidian tasks and see if anything is worth moving over" entry:"1757443262" modified:"1757443262" status:"pending" tags:"taskwarrior" tags_taskwarrior:"x" uuid:"c1a5390d-5b84-4f9c-8acb-ffb970682660"]
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[description:"Look around for summer internships with national labs" entry:"1757449731" modified:"1757449731" status:"pending" uuid:"d3f3dc53-4feb-4b7e-8de5-86ebf3c535d5"]
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[description:"Look around for summer internships with national labs" entry:"1757449731" modified:"1757449731" status:"pending" uuid:"d3f3dc53-4feb-4b7e-8de5-86ebf3c535d5"]
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[dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757620955" project:"ERLM" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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[dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757885608" project:"ERLM" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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[description:"get FSAE COM and track data to Matt barry for statics problem. He also wants a cad model?" due:"1758254400" entry:"1757515988" modified:"1757515988" status:"pending" uuid:"48f997bf-b686-4c0b-bee5-ac8e5f874ad9"]
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[description:"get FSAE COM and track data to Matt barry for statics problem. He also wants a cad model?" due:"1758254400" entry:"1757515988" modified:"1757515988" status:"pending" uuid:"48f997bf-b686-4c0b-bee5-ac8e5f874ad9"]
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||||||
[description:"Read Opportunities, Challenges, and Research Needs for Remote Microreactor Operations" entry:"1757516723" modified:"1757516723" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"96c76e6b-5c33-4f54-a156-5c59e718f01a"]
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[description:"Read Opportunities, Challenges, and Research Needs for Remote Microreactor Operations" entry:"1757516723" modified:"1757516723" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"96c76e6b-5c33-4f54-a156-5c59e718f01a"]
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||||||
[description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757621896" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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@ -109,3 +109,15 @@ time 1757621896
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old [description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757620907" project:"Thesis" start:"1757620907" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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old [description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757620907" project:"Thesis" start:"1757620907" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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new [description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757621896" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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new [description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757621896" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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---
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---
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time 1757864178
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old [description:"Read Branicky Lyapunov paper" entry:"1757615669" modified:"1757621896" project:"Thesis" status:"pending" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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||||||
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new [description:"Read Branicky Lyapunov paper" end:"1757864178" entry:"1757615669" modified:"1757864178" project:"Thesis" status:"completed" tags:"reading" tags_reading:"x" uuid:"f4d32147-ec74-4f68-b8d5-146c0b6f35df"]
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---
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||||||
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time 1757864205
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old [dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757620955" project:"ERLM" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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new [dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757864205" project:"ERLM" start:"1757864205" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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---
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time 1757885608
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old [dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757864205" project:"ERLM" start:"1757864205" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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new [dep_8e7a8e19-9197-4008-b7d9-521ffcf7ba91:"x" dep_96c76e6b-5c33-4f54-a156-5c59e718f01a:"x" dep_f4d32147-ec74-4f68-b8d5-146c0b6f35df:"x" depends:"8e7a8e19-9197-4008-b7d9-521ffcf7ba91,96c76e6b-5c33-4f54-a156-5c59e718f01a,f4d32147-ec74-4f68-b8d5-146c0b6f35df" description:"Write first draft of state of the art" due:"1757649600" entry:"1757449978" modified:"1757885608" project:"ERLM" status:"pending" tags:"writing" tags_writing:"x" uuid:"4bec1530-18bc-43cb-9f0b-61e35dbf1730"]
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---
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@ -1,4 +1,4 @@
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\section{Goals and Outcomes - REVISED}
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\section{Goals and Outcomes}
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The goal of this research is to develop a unified framework combining temporal
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The goal of this research is to develop a unified framework combining temporal
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logic synthesis with continuous-time verification methods to create autonomous
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logic synthesis with continuous-time verification methods to create autonomous
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\relax
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\relax
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\bibstyle{unsrt}
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\bibstyle{unsrt}
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\providecommand \oddpage@label [2]{}
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\providecommand \oddpage@label [2]{}
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\@writefile{toc}{\contentsline {section}{\numberline {1}Goals and Outcomes - ORIGINAL}{1}{}\protected@file@percent }
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\@writefile{toc}{\contentsline {section}{\numberline {1}Goals and Outcomes}{1}{}\protected@file@percent }
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\@writefile{toc}{\contentsline {section}{\numberline {2}Goals and Outcomes - REVISED}{2}{}\protected@file@percent }
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\bibdata{references}
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\bibdata{references}
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\@writefile{toc}{\contentsline {section}{\numberline {2}State of the art and limits of current practice}{3}{}\protected@file@percent }
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\@writefile{toc}{\contentsline {subsection}{\numberline {2.1}Control Theory and Hybrid Systems}{3}{}\protected@file@percent }
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\newlabel{eq:hybrid-sys}{{2}{3}{Control Theory and Hybrid Systems}{}{}}
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\@writefile{toc}{\contentsline {subsection}{\numberline {2.2}Formal Methods and Reactive Synthesis}{3}{}\protected@file@percent }
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\@writefile{toc}{\contentsline {section}{References}{3}{}\protected@file@percent }
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\gdef \@abspage@last{4}
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\gdef \@abspage@last{4}
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3
Writing/ERLM/main.bbl
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\begin{thebibliography}{}
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\end{thebibliography}
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Writing/ERLM/main.blg
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This is BibTeX, Version 0.99d (TeX Live 2023/Debian)
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Capacity: max_strings=200000, hash_size=200000, hash_prime=170003
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The top-level auxiliary file: main.aux
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The style file: unsrt.bst
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I found no \citation commands---while reading file main.aux
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Database file #1: references.bib
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You've used 0 entries,
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1791 wiz_defined-function locations,
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445 strings with 3516 characters,
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duplicate$ -- 0
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empty$ -- 1
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format.name$ -- 0
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if$ -- 1
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int.to.chr$ -- 0
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int.to.str$ -- 0
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missing$ -- 0
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newline$ -- 3
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num.names$ -- 0
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pop$ -- 0
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preamble$ -- 1
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write$ -- 2
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(There was 1 error message)
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# Fdb version 4
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# Fdb version 4
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["bibtex main"] 0 "main.aux" "main.bbl" "main" 1757303867.80253 0
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["bibtex main"] 1757866412.20829 "main.aux" "main.bbl" "main" 1757880660.67738 0
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"./references.bib" 1757866237.16684 0 d41d8cd98f00b204e9800998ecf8427e ""
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"/usr/share/texlive/texmf-dist/bibtex/bst/base/unsrt.bst" 1292289607 18030 1376b4b231b50c66211e47e42eda2875 ""
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"/usr/share/texlive/texmf-dist/bibtex/bst/base/unsrt.bst" 1292289607 18030 1376b4b231b50c66211e47e42eda2875 ""
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"main.aux" 0 -1 0 "pdflatex"
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"main.aux" 1757880660.60211 759 c340ead263222262cc9d66ce4adc65f5 "pdflatex"
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"references.bib" 0 -1 0 ""
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(generated)
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(generated)
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"main.bbl"
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"main.bbl"
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"main.blg"
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"main.blg"
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(rewritten before read)
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(rewritten before read)
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["pdflatex"] 1757303867.36078 "main.tex" "main.pdf" "main" 1757303867.80269 0
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"/etc/texmf/web2c/texmf.cnf" 1726065852.27662 475 c0e671620eb5563b2130f56340a5fde8 ""
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"/usr/share/texlive/texmf-dist/fonts/map/fontname/texfonts.map" 1577235249 3524 cb3e574dea2d1052e39280babc910dc8 ""
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@ -20,8 +20,10 @@
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\input{goals-and-outcomes/v4}
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\input{goals-and-outcomes/v4}
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\newpage
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\input{state-of-the-art/v1.tex}
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\bibliography{references}
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\bibliography{references}
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Writing/ERLM/references.bib
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0
Writing/ERLM/references.bib
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@ -1,13 +1,75 @@
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\section{State of the art and limits of current practice}
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\section{State of the art and limits of current practice}
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%Start with some discussion about what a hybrid system is. Lay it out with some
|
This research will improve our ability to build high assurance autonomous hybrid
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%knowledge about jumps and flow and what not. Lay down a mathematical
|
control systems by connecting tools from different areas of the scientific
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%preliminary here.
|
literature. We will combine control and dynamics theory of hybrid systems with
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the discrete systems analysis found in the computer science space. These two
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|
fields are disparate, but both approach the problem of high assurance hybrid
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|
systems. First, we will discuss the control theory side. Hybrid systems from a
|
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|
differential equation perspective will be considered, and comparisons to the
|
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|
current state of the art of nuclear power control will be discussed. Then, we
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|
will discuss approaches for discrete and hybrid systems from the logical and
|
||||||
|
computer science perspective. These gap between these two fields is the crux of
|
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|
the intellectual merit of this research.
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|
|
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\subsection{Discrete Systems and Reactive Synthesis}
|
\subsection{Control Theory and Hybrid Systems}
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|
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% LIMITATION: Discrete synthesis is predicated upon
|
Hybrid systems have two components to their behavior. They have continuous
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|
dynamics called 'flow', and have discrete dynamics called 'jumps'. Hybrid
|
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|
systems can often be described as a set of differential and difference
|
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|
equations. An hybrid system can be defined as follows:
|
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|
|
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\subsection{Continuous System Verification}
|
\begin{align}
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|
\dot{x}(t) &= f(x(t), q(t), u(t)) \\
|
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|
q(k+1) &= \nu(x(k), q(k), u(k))
|
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|
\label{eq:hybrid-sys}
|
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|
\end{align}
|
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|
|
||||||
\subsection{Hybrid System Verification Approaches}
|
In this description there are two functions: \(f(\cdot)\) and
|
||||||
|
\(\nu(\cdot)\). \(f(\cdot)\) defines the continuous dynamics, while
|
||||||
|
\(\nu(\cdot)\) defines the discrete dynamics. These functions take three
|
||||||
|
inputs: the continuous states \(x\), the discrete state \(q\), and an optional
|
||||||
|
control input \(u\). \(f_i(\cdot)\) here is a nonlinear function, where \(q\)
|
||||||
|
changes the mode of the continuous dynamics, but is otherwise dependent on the
|
||||||
|
current continuous states and control input. \(\nu_i(\codt)\) can be much more
|
||||||
|
generally created. The only restriction on \(\nu_i(\codt)\) is that it must
|
||||||
|
not create an infinite number of jumps in a finite amount of time.
|
||||||
|
\(\nu_i(\codt)\) can depend a control input \(u\), or can be
|
||||||
|
\textit{autonomous}, where the discrete mode is defined by the system states
|
||||||
|
\(x\) and \(q\). While an autonomous system may not have a control input, that
|
||||||
|
does not mean the system is not controlled, as the continuous dynamics
|
||||||
|
\(f_i(\cdot)\) can be constructed such that the system is controlled by the
|
||||||
|
continuous and discrete states \(x\) and \(q\).
|
||||||
|
|
||||||
|
The hybrid systems we are most interested in here are \textit{continuous} autonomous
|
||||||
|
hybrid systems. These systems are hybrid systems whose continuous states \(x\)
|
||||||
|
do not change during a jump, and do not rely on an external control input. This
|
||||||
|
research is primarily aimed at control of physical systems whose continuous
|
||||||
|
states \(x\) are physically required to be continuous across jumps. For example,
|
||||||
|
a nuclear reactor control rod system may jump from a warm-up ramp control mode to a load
|
||||||
|
following controller, but the continuous states of the reactor such as
|
||||||
|
temperature and rod position can not instantaneously change.
|
||||||
|
|
||||||
|
Continuous hybrid systems are often constructed by piecing together control
|
||||||
|
systems for different regions in the state space. This way of building a hybrid
|
||||||
|
control system is intuitive--controllers are built for local regions with local
|
||||||
|
objectives. The problem arises when analysis of these local controllers is
|
||||||
|
generalized to the entire, global, hybrid system. Even in the most simple case
|
||||||
|
of linear time invariant controller modes, global guarantees of stability can
|
||||||
|
not be made using linear control theory. Instead, approaches using stitched
|
||||||
|
networks of Lyapunov functions have been introduced. %CITE CITE CITE%
|
||||||
|
These Lyapunov functions are difficult to find, but can for some linear switched
|
||||||
|
hybrid systems provide a way to verification.
|
||||||
|
|
||||||
|
Another way of verifying stability of hybrid control systems includes performing
|
||||||
|
reachability analysis. Reachability is a formal methods tool that uses
|
||||||
|
abstractifications of a system to determine output ranges of dynamic systems for
|
||||||
|
a given input. Reachability is not limited to linear systems, and can be
|
||||||
|
performed on nonlinear systems as well. Reachability for hybrid systems suffers
|
||||||
|
from two main deficiencies. First, the analysis can take a very long time to
|
||||||
|
compute. Second, reachability uses approximations. Hybrid systems that have
|
||||||
|
trajectories of significantly long times can cause problems when using
|
||||||
|
reachability because either the computation time makes the analysis infeasible,
|
||||||
|
or the compounding approximation errors makes the analysis meaningless.
|
||||||
|
|
||||||
|
\subsection{Formal Methods and Reactive Synthesis}
|
||||||
|
|||||||
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Reference in New Issue
Block a user