Optimum design of structures with disturbance suppression by H{sub}∞ control

摘要

Optimum design of structures considering control performances is presented. This paper supposes that a structure is subjected to initial loads and time-varying disturbances and is controlled by an H{sub}∞ controller to suppress the effect of disturbances. The purpose of the design is minimization of an objective function which represents the effect of the initial loads, under a constraint imposed on the weight of the structure. The optimum design using an H{sub}∞ controller is compared with the design using an optimal regulator in order to demonstrate its effectiveness. A numerical example of a 3-D truss structure shows that the structural design using an H{sub}∞ controller can attenuate vibrations caused by both initial loads and time-varying disturbances.