Split
03a21ed0d5
Three-pass editorial review: Pass 1 (Tactical - sentence-level): - Improved topic-stress positioning for emphasis - Strengthened verb choice and topic strings - Broke long, complex sentences into clearer shorter ones - Fixed parallel structure inconsistencies - Tightened hedging and unnecessary words Pass 2 (Operational - paragraph/section): - Strengthened transitions between subsections - Improved logical flow within sections - Enhanced parallel structure in key arguments - Clarified connections between ideas Pass 3 (Strategic - document-level): - Strengthened Heilmeier question alignment in section summaries - Improved parallel structure in 'three innovations' and 'three factors' - Made strategic points more prominent and explicit - Enhanced forward references between sections Overall: Improved clarity, emphasis, and coherence throughout while maintaining technical accuracy and Dane's analytical voice.
54 lines
4.0 KiB
TeX
54 lines
4.0 KiB
TeX
% GOAL PARAGRAPH
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I develop autonomous control systems with mathematical guarantees of safe and correct behavior.
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% INTRODUCTORY PARAGRAPH Hook
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Nuclear reactors today depend on extensively trained human operators who follow detailed written procedures and switch between control objectives as plant conditions change.
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% Gap
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Small modular reactors face a fundamental economic challenge: their per-megawatt staffing costs significantly exceed those of conventional plants, threatening economic viability. Autonomous control could manage complex operational sequences without constant supervision—but only if it provides safety assurance equal to or exceeding that of human operators.
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% APPROACH PARAGRAPH Solution
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I produce hybrid control systems correct by construction, unifying formal methods from computer science with control theory.
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% Rationale
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Human operators already work this way: discrete logic switches between continuous control modes. Formal methods generate provably correct switching logic but cannot handle continuous dynamics. Control theory verifies continuous behavior but cannot prove discrete switching correctness. Both must work together to achieve end-to-end correctness.
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% Hypothesis and Technical Approach
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Three stages bridge this gap. First, NASA's Formal Requirements Elicitation Tool (FRET) translates written operating procedures into temporal logic specifications, structuring requirements by scope, condition, component, timing, and response. Realizability checking exposes conflicts and ambiguities before implementation begins. Second, reactive synthesis generates deterministic automata that are provably correct by construction. Third, reachability analysis verifies that continuous controllers satisfy the requirements each discrete mode imposes. Engineers design these continuous controllers using standard control theory techniques.
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Control objectives classify continuous modes into three types. Transitory modes drive the plant between conditions. Stabilizing modes maintain operation within regions. Expulsory modes ensure safety under failures. Barrier certificates and assume-guarantee contracts prove safe mode transitions, enabling local verification without global trajectory analysis. The methodology demonstrates on an Emerson Ovation control system—the industrial platform nuclear power plants already use.
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% Pay-off
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This approach manages complex nuclear power operations autonomously while maintaining safety guarantees, directly addressing the economic constraints threatening small modular reactor viability.
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% OUTCOMES PARAGRAPHS
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This research, if successful, produces three concrete outcomes:
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\begin{enumerate}
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% OUTCOME 1 Title
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\item \textit{Synthesize written procedures into verified control logic.}
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% Strategy
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A methodology converts written operating procedures into formal specifications.
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Reactive synthesis tools then generate discrete control logic from these specifications.
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% Outcome
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Control engineers generate mode-switching controllers directly from regulatory
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procedures. Minimal formal methods expertise required. This reduces barriers to
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high-assurance control systems.
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% OUTCOME 2 Title
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\item \textit{Verify continuous control behavior across mode transitions.}
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% Strategy
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Reachability analysis verifies that continuous control modes satisfy discrete
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transition requirements.
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% Outcome
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Engineers design continuous controllers using standard practices while
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maintaining formal correctness guarantees. Mode transitions occur safely and at
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the correct times—provably.
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% OUTCOME 3 Title
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\item \textit{Demonstrate autonomous reactor startup control with safety
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guarantees.}
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% Strategy
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This methodology demonstrates on a small modular reactor simulation using industry-standard control hardware.
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% Outcome
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Control engineers implement high-assurance autonomous controls on
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industrial platforms they already use, enabling autonomy without retraining
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costs or new equipment development.
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\end{enumerate}
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