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A partitioned computational procedure is presented for the simulation of control-structure interaction systems by employing three modular software packages: a second-order structural dynamics analyzer, a second-order observer module, and a first-order stabilized active control force generator. This paper focuses on modular programming of the procedure, techniques for enhancing accuracy and for stabilizing the partitioned interaction equations, and time discretization of the stabilized systems of equations. A stability analysis has been performed using a set of model interaction equations, which indicates that the computational stability of the procedure is governed by the highest frequency of the controller and the strength of its position feedback parameter and not by that of the structural system. Comparison of the computational efficiency of the present procedure with a first-order conventional solution procedure indicates that the present procedure offers a substantial efficiency improvement. The effectiveness of the present procedure has been demonstrated by several example problems.
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Park et al. (1991) studied this question.
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