Reliability-based co-design for state-constrained stochastic dynamical systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this article, we propose a novel framework for reliability-based co-design of stochastic dynamical systems. Specifically, it solves a combined reliability-based design optimization problem of the plant design with parametric uncertainties and the state-constrained stochastic optimal control. In the past, co-design strategies have been applied primarily in a deterministic manner, often employing open-loop optimal control techniques in generating solutions and system design insights. Here we extend the scope of co-design methods to a specific class of stochastic dynamical systems by providing a stationary solution to its Hamiltonian-Jacobi-Bellman equation, based on logarithmic transformation and linearization. For reliability assessment, Monte Carlo Simulation, Performance Measurement Approach, and Sequential Optimization and Reliability Assessment methods are evaluated with respect to accuracy and computational expense. The proposed method is demonstrated and assessed using both an analytical example and a co-design problem involving an actively controlled spring-mass-damper system.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
CountryUnited States
CityOrlando
Period1/6/201/10/20

ASJC Scopus subject areas

  • Aerospace Engineering

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