Damage-mitigating control of mechanical systems: Part II-formulation of an optimal policy and simulation

Asok Ray, Min Kuang Wu, Marc Garpino, Carl F. Lorenzo

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


The objective of damage-mitigating control introduced in the first part of this twopart paper is to achieve high performance without overstraining the mechanical structures. The major benefit is an increase in the functional life of critical plant components along with enhanced safety, operational reliability, and availability. Specifically, a methodology for modeling fatigue damage has been developed as an augmentation to control and diagnostics of complex dynamic processes such as advanced aircraft, spacecraft, and power plants. In this paper which is the second part, an optimal control policy is formulated via nonlinear programming under specified constraints of the damage rate and accumulated damage. The results of simulation experiments for upthrust transient operations of a reusable rocket engine are presented to demonstrate efficacy of the damage-mitigating control concept.

Original languageEnglish (US)
Pages (from-to)448-455
Number of pages8
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Issue number3
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Information Systems
  • Instrumentation
  • Mechanical Engineering
  • Computer Science Applications


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