908 resultados para PMD Link Coefficient


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"September 6, 1989."

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Yellow, black ink on linen; location, type, amounts of plantings; notes; footpaths, pool, gardens; signed; 77 x 86 cm.; Scale: 1" = 10' [from photographic copy by Lance Burgharrdt]

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Yellow, black ink on linen; plan, four cross-sections; unsigned; 102 x 83 cm.; Scales vary [from photographic copy by Lance Burgharrdt]

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Yellow, black ink on linen; location, type, amounts of plantings; footpaths, pool; unsigned; 40 x 43 cm.; Scale: 1" = 4' [from photographic copy by Lance Burgharrdt]

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Blueprint; topo. lines, elevations; Arthur Lieske, landscape architect, Indianapolis cited as responsible for survey; residence, plantings outlined in pencil; unsigned; 44 x 43 cm.; Scale: 1" = 20' [from photographic copy by Lance Burgharrdt]

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Red, black pencil on tracing paper;location of trees, buildings, gardens, footpaths; contour lines; arrows indicate direction and location of photographs; "drawn by C.C. Godfrey, Jr."; unsigned; 84 x 54 cm.; No scale [from photographic copy by Lance Burgharrdt]

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"HUD-1071-CPD"--P. [4] of cover.

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Mode of access: Internet.

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A method is proposed for determining the optimal placement and controller design for multiple distributed actuators to reduce the vibrations of flexible structures. In particular, application of piezoceramic patches to a horizontally-slewing single-link flexible manipulator modeled using the assumed modes method is investigated. The optimization method uses simulated annealing and allows placement of any number of distributed actuators of unequal length, although piezoceramics of fixed equal lengths are used in the example. It also designs an linear-quadratic-regulator controller as part of the optimization procedure. The measures of performance used in the investigation to determine optimality are the total mass of the system and the time integral of the absolute value of the hub and tip position error. This study also varies the relative weightings for each of these performance measures to observe the effects on the controller designs and piezoceramic patch positions in the optimized solutions.