Control Augmented Structural SynthesisNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1988 - Structural design - 174 pages |
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Results 1-3 of 11
Page 56
... Nt / cm and h1 = 5.0 Nt- sec / cm . Lower bound side constraints on the feedback gains ( h , ≥ .05 Nt / cm , h , > .05 Nt - sec / cm ) ensure that the final designs will be dynamically stable ( Ref . 18 ) . The magnitude of each ...
... Nt / cm and h1 = 5.0 Nt- sec / cm . Lower bound side constraints on the feedback gains ( h , ≥ .05 Nt / cm , h , > .05 Nt - sec / cm ) ensure that the final designs will be dynamically stable ( Ref . 18 ) . The magnitude of each ...
Page 63
... cm , hp = 50.0 Nt / cm and h 、= 5.0 Nt- sec / cm . For the second run the initial design was t = 2.0 cm , th = .75 cm , hp 100.0 Nt / cm and h1 = 7.5 Nt - sec / cm . The magnitude of the tip displacement is constrained to be less than ...
... cm , hp = 50.0 Nt / cm and h 、= 5.0 Nt- sec / cm . For the second run the initial design was t = 2.0 cm , th = .75 cm , hp 100.0 Nt / cm and h1 = 7.5 Nt - sec / cm . The magnitude of the tip displacement is constrained to be less than ...
Page 73
... cm and 10.0 cm < b , h≤ 25.0 cm . Move limits of 10 % were imposed during ... Nt / cm2 and 4 ) the total structural mass must be less than or equal to ... sec / cm with side constraints = by hp 100.0 Nt / cm and h1 = imposed so that h ...
... cm and 10.0 cm < b , h≤ 25.0 cm . Move limits of 10 % were imposed during ... Nt / cm2 and 4 ) the total structural mass must be less than or equal to ... sec / cm with side constraints = by hp 100.0 Nt / cm and h1 = imposed so that h ...
Contents
The Control Augmented Structural Synthesis | 12 |
Structural Analysis | 20 |
Approximate Problem Generation | 34 |
8 other sections not shown
Common terms and phrases
1.0 indicates active control system actuator 2 actuators actuator Controlled Actuator Force approximate problem augmented structural synthesis bound value Table Cantilevered Beam constraint is critical control augmented structural control elements Control Force Minimization Control Theory Controlled 1 actuator critical Table Data for Problem denotes lower bound design problem Design Response Ratios design variables Designs for Problem displacement constraints dual dynamic displacements dynamic loading conditions eigenvalue equations Əxij Əxij Final Design cm Final Design Response Grillage Histories for Problem Independent Actuator Gains Iteration History Data linear load vectors lower bound value Lumped Mass Design Mass Minimization Maximum Constraint Violation Minimization Final Design move limits natural frequencies Nt-sec/cm Nt/cm objective function optimal control Problem 5 Cantilevered Ratios for Problem Response Minimization shown in Fig side constraints space frame static stiffness matrix straint structural mass techniques Tip Displacement total control force truss elements upper bound Пр