Simultaneous optimization of controlled structures

Salama, M.; Garba, J. A.; Demsetz, L.; Udwadia, Firdaus E.

doi:10.1007/bf00368961

Cited by 97 publications

(21 citation statements)

References 5 publications

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“…That is, small structural modifications can result in large control effort reductions to meet the same vibration control requirements. This result, and other recent studies also demonstrating synergistic effects of an integrated design (for example, Sal,Mes]), are seen as a justification for further investigation into the problem.…”

Section: Problem Formulationsupporting

confidence: 70%

Multivariable Methods for the Design, Identification and Control of Large Space Structures. Volume 2. Optimal

Dumbacher¹

1989

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Section: Problem Formulationsupporting

confidence: 70%

Multivariable Methods for the Design, Identification and Control of Large Space Structures. Volume 2. Optimal

Dumbacher¹

1989

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“…The rotation angle of pulley 3 is set as 3 φ . The potential energy of the timing belt is obtained as follows:…”

Section: Modified Equation Of Motionmentioning

confidence: 99%

Structural Deign Optimization for A Two-link Robot to Suppress Undesirable Vibration

Kawamura

Iwamoto

Minamoto

et al. 2009

JAMDSM

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In this study, we address the case of a horizontal two-link robot with flexible timing belts and present a structural design guideline to reduce its undesirable vibration. First, an equation of motion was constructed using Lagrange's equation, and its validity was examined by comparing the experimental and simulation results using an index to estimate the undesirable vibration. As a result, it was determined that the mathematical model could be used as a simulation tool for design optimization. Then, by a simple structural modification, a design guideline was proposed to reduce the undesirable vibration in the extension motion: namely, a robot arm was designed such that the location of its center of gravity is near the rotation center and its moment of inertia is small. Other optimum structural design may be obtained for the other motion of robot. The points of this study are to propose the design method that includes the definition of objective function for the optimum design and to show a design guideline to reduce the undesirable vibration for a certain motion of robot.

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“…Find the optimal values of the structural stiffness for each floor, kj, that minimize the structural weight objective function given in equation (9) subject to the constraints of equation (10). The structural weight objective, W, in equation (9) is chosen as linear for simplicity:…”

Section: Structural Optimizationmentioning

confidence: 99%

Optimum design of actively controlled structures

Pantelides

1990

Earthq Engng Struct Dyn

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SUMMARYThe optimum design of seismic structures equipped with active controls is presented. The design variables are structural parameters, such as structural stiffness or moment of inertia. The optimization procedure is carried out in two stages. First, the optimal control forces are expressed in closed form, as implicit functions of the design variables. In the second stage, the structural parameters are varied in order to minimize a structural weight objective function. The algorithm is applied to structural systems under earthquake excitations, for displacement, frequency and control force constraints.

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Simultaneous optimization of controlled structures

Cited by 97 publications

References 5 publications

Multivariable Methods for the Design, Identification and Control of Large Space Structures. Volume 2. Optimal

Multivariable Methods for the Design, Identification and Control of Large Space Structures. Volume 2. Optimal

Structural Deign Optimization for A Two-link Robot to Suppress Undesirable Vibration

Optimum design of actively controlled structures

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