Search Results - "Gradient-based optimization algorithm"

A gradient-based optimization algorithm to solve optimal control problems with conformable fractional-order derivatives by Gong, Zhaohua, Liu, Chongyang, Teo, Kok Lay, Wu, Yonghong

“… We first propose a nonlinear fractional optimal control problem subject to general equality and inequality constraints…”
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Experimentally fitted biodynamic models for pedestrian–structure interaction in walking situations by Toso, Marcelo André, Gomes, Herbert Martins, da Silva, Felipe Tavares, Pimentel, Roberto Leal

“…The interaction between moving humans and structures usually occurs in slender structures in which the level of vibration is potentially high. Furthermore,…”
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Numeric ring-reconstructions based on massifs favor a non-oblique south pole-Aitken-forming impact event by Bernhardt, Hannes, Walsh, Jessica M., Schröder, Leon M., Clark, Jaclyn D., Henriksen, Megan R., Edwards, Christopher S.

“…) have been subject of several studies over the past decades. Most investigations considered long wavelength signatures such as the topographic outline of the extant basin floor…”
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Numerical solution of free final time fractional optimal control problems by Gong, Zhaohua, Liu, Chongyang, Teo, Kok Lay, Wang, Song, Wu, Yonghong

“… This problem is subject to equality and inequality constraints in canonical forms, and the orders in the fractional system can be different…”
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An adjoint method of sensitivity analysis for residual vibrations of structures subject to impacts by Yan, Kun, Cheng, Gengdong

“… An efficient sensitivity analysis of residual vibration with respect to structural or operational parameters is indispensable for using a gradient based optimization algorithm, which reduces…”
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Optimal state-delay control in nonlinear dynamic systems by Liu, Chongyang, Loxton, Ryan, Teo, Kok Lay, Wang, Song

“… The optimal control problem is to optimize the time-varying delay and a set of time-invariant system parameters subject to lower and upper bounds…”
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The control parametrization technique for numerically solving fractal–fractional optimal control problems involving Caputo–Fabrizio derivatives by Liu, Chongyang, Yi, Xiaopeng, Gong, Zhaohua, Han, Meijia

“…–Fabrizio derivatives and subject to state constraints of equality and inequality. Then, by using control parametrization technique, the fractal…”
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A control parameterization method for solving combined fractional optimal parameter selection and optimal control problems by Yi, Xiaopeng, Gong, Zhaohua, Liu, Chongyang, Cheong, Huey Tyng, Teo, Kok Lay, Wang, Song

“… and subject to canonical equality and inequality constraints. We first approximate this problem by a set of finite-dimensional optimization problems using the control…”
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Numerical Computation of Optimal Control Problems with Atangana–Baleanu Fractional Derivatives by Liu, Chongyang, Yu, Changjun, Gong, Zhaohua, Cheong, Huey Tyng, Teo, Kok Lay

“… Furthermore, a gradient-based optimization algorithm for solving the discretized optimal control problem is developed…”
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Structural topology optimization subject to overhang angle constraint with overhang length relaxation in additive manufacturing by Zhang, KaiQing, Cheng, GengDong, Wang, Yu

“… (TO). The minimum compliance design subject to overhang angle constraint with overhang length relaxation and horizontal minimum length control is considered…”
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A novel strategy for the crossarm length optimization of PSSCs based on multi-dimensional global optimization algorithms by Li, Pengcheng, Wang, Hao

“…•A novel optimization method of determining the optimal crossarm length of PSSC.•The method overcomes the drawbacks in the gradient-based optimization algorithm…”
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Optimal Control Computation for Nonlinear Fractional Time-Delay Systems with State Inequality Constraints by Liu, Chongyang, Gong, Zhaohua, Yu, Changjun, Wang, Song, Teo, Kok Lay

“…In this paper, a numerical method is developed for solving a class of delay fractional optimal control problems involving nonlinear time-delay systems and subject to state inequality constraints…”
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Aerodynamic shape optimization for minimum robust drag and lift reliability constraint by Papadimitriou, Dimitrios I., Papadimitriou, Costas

“… The optimal shape is computed by minimizing a robust estimate of the drag coefficient subject to reliability constraint for the lift coefficient…”
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Optimal Control of Nonlinear Fractional-Order Systems with Multiple Time-Varying Delays by Liu, Chongyang, Gong, Zhaohua, Teo, Kok Lay, Wang, Song

“… On the basis of this result, we develop a gradient-based optimization algorithm to numerically solve the discretized problem…”
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A Decentralized Multi-objective Optimization Algorithm by Blondin, Maude J., Hale, Matthew

“…During the past few decades, multi-agent optimization problems have drawn increased attention from the research community. When multiple objective functions…”
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Reliability-based topology optimization of geometrically nonlinear structures considering non-probabilistic load parameter and geometric field uncertainties by Zhan, Junjie, Wang, Mingyue, Chen, Jiayi, Xing, Jian

“… Utilizing the concerned performance method, the GN-NRBTO model is formulated as a maximization problem of the performance function subject to constraints related to the volume of structures…”
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Robust design optimization under dependent random variables by a generalized polynomial chaos expansion by Lee, Dongjin, Rahman, Sharif

“…-moment sensitivities with respect to the design variables, and a standard gradient-based optimization algorithm, establishing direct GPCE, single-step GPCE, and multi-point single-step GPCE design processes…”
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Efficient automatic discrete adjoint sensitivity computation for topology optimization – heat conduction applications by Vadakkepatt, Ajay, Mathur, Sanjay R, Murthy, Jayathi Y

“…) subject to constraints. The purpose of this study is to develop a problem-agnostic automatic differentiation (AD…”
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Preform shape and operating condition optimization for the stretch blow molding process by Thibault, F., Malo, A., Lanctot, B., Diraddo, R.

“… The numerical approach combines a constrained gradient‐based optimization algorithm that iterates automatically over predictive finite element software…”
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Size optimization of mid-frequency vibro-acoustic systems in the framework of modal energy analysis by Yu, Yang, Wang, Dongping, Zhao, Guozhong, Li, Yonghua, Chen, Bingzhi

“… Via a gradient-based optimization algorithm, the sensitivity of the acoustic energy at pure tone with respect to the structural thickness is deduced by employing a complex…”
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