S.S. Joshi, Damper Placement for Spaceborne Interferometers Damper Placement for Spaceborne Interferometers Using Em-Norm, Genetic Algorithm, and Simulated Annealing Optimization

A general methodology for damper placement in spaceborne interferometers is introduced. The process consists of combined structural/optical/damper modeling, 3. 1, cost selection, and genetic-algorithm or simulated annealing optimization. Combined structural/optical modeling allows the ability to quantitatively predict the effect of mechanical disturbances on optical performance metrics. 3. 1, cost allows for the consideration of multiple dissimilar disturbance inputs and multiple dissimilar performance outputs, as well as consideration of worst-case analysis. Genetic-algorithms and simulated annealing allow for an efficient search of a high-dimensional optimization space. A numerical example is shown to demonstrate the methodology. A comparison of placement of a finite-number of passive dampers using genetic algorithms, simulated annealing, and exhaustive search is considered. Finally, the effect of different numbers of passive dampers is examined.