Integrated prognostics, maintenance and life-extending control of continuous-time production processes

Global economic competition has resulted in increased emphasis on the maintenance and life extension of existing plant equipment to reduce major capital costs and increase productivity. The economic and technological challenges for reliable and cost-effective production in continuous-time and discrete production processes are met through a combination of failure prognostics, information-based predictive maintenance, and life-extending control. These three interrelated issues are addressed in this chapter. The technical approach is based on augmentation of system-theoretic techniques for synthesis of optimal decision and control policies with governing equations and inequality constraints that model the mechanical behavior of structural materials for the purpose of damage representation. The major challenge here is to characterize the dynamic properties of the materials and then utilize this information in a mathematical form such that it is readily applicable to synthesis of robust decision and control systems for integrated prognostics, maintenance, and life extension.

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