Bi-level optimization for a dynamic multiobjective problem

Mikko Linnala (1) , Elina Madetoja (1) , Henri Ruotsalainen (1) , Jari Hämäläinen (2)

1 Department of Applied Physics
2 Centre of Computational Engineering and Integrated Design

In this paper, a bi-level optimization problem covering upper (design) and lower (operation) levels is defined and a solution procedure for bi-level optimization problems is presented. This is devised as a dynamic multiobjective optimization problem, i.e. the values of the control and state variables change over a predefined time horizon and several competing criteria are optimized simultaneously. Moreover, the interaction between the upper and lower levels is analysed. The benefits of bi-level dynamic multiobjective optimization are illustrated in detail by examining an industrial case in which the design of a paper mill (upper level) and the mill operation (lower level) are optimized at the same time. However, the problem definition and the solution procedure are not limited to any specific application but can be exploited in many different industrial areas.

Mots clés: Physical Sciences

Domaines: Sciences de l'ingénieur [physics]

Mikko Linnala, Elina Madetoja, Henri Ruotsalainen, Jari Hämäläinen. Bi-level optimization for a dynamic multiobjective problem. Engineering Optimization, 2011, pp.1. ⟨10.1080/0305215X.2011.573853⟩. ⟨hal-00712362⟩