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- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF JOURNAL OF STRUCTURAL MECHANICS AND EARTHQUAKE ENGINEERING ’˜ŽÒi‰pjF ƒ^ƒCƒgƒ‹i‰pjF Digital active optimal control of steel structuresD ´˜^i‰pjF
Concept of a digital-type active optimal control of steel structures is studied especially on the following two points ; that is, (1) improve of calculation time using complex modal analysis and (2) evaluation of an effect of control parameters. Since the state equation of control in a discrete-time system contains a matrix exponential function, which gives a large defect on the calculation time and on the stability of solution, orthogonal technic based on the complex modal analysis is used, and it gives a successful result. Control state of the system is strongly influenced by the weight functions, which appears in the Hamilton of Pontrjagin's maximum principle, the parametric study is provided on the e ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@@˜_•¶W