A Multistate-Based Control System Approach Toward Optimal Maintenance Planning

This brief incorporates the multistate system into a control system approach to address the maintenance plan optimization (MPO) problem. The maintenance plan focuses on the totality of a set of items. A building energy efficiency retrofitting context is employed, where the retrofitted items are categorized into several homogeneous groups. The homogeneous group population dynamics and the aggregate performance dynamics under the impacts of multistate deteriorations and maintenances are formulated as a control system model. Thereafter, the MPO is cast into an optimal control problem. A model-predicative-control-based approach is employed to solve the optimal control problem with system uncertainties. A case study is conducted to illustrate the effectiveness of the present approach.