Stabilization and Control Problems in Structural Dynamics

In this paper, we introduce a novel concept for parametric studies in multibody dynamics. This is based on a technique that makes it possible to perform a natural normalization of the dynamics in terms of inertial parameters. This normalization technique rises out from the underlying physical structure of the system, which is mathematically expressed in the form of eigenvalue problems. It leads to the introduction of the concept of dimensionless inertial parameters. This, in turn, makes the decomposition of the array of parameters possible for studying design and control problems where parameter estimation and sensitivity is of importance.

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Arbitrage and control problems in finance

Journal of Mathematical Economics ◽

10.1016/s0304-4068(00)00063-x ◽

2001 ◽

Vol 35 (2) ◽

pp. 167-183 ◽

Cited By ~ 6

Author(s):

Elyès Jouini

Keyword(s):

Control Problems ◽

And Control

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On Measures of Coupling Between the Artifact and Controller Optimal Design Problems

Volume 2: 29th Computers and Information in Engineering Conference, Parts A and B ◽

10.1115/detc2009-86868 ◽

2009 ◽

Cited By ~ 14

Author(s):

Diane L. Peters ◽

Panos Y. Papalambros ◽

A. Galip Ulsoy

Keyword(s):

System Optimization ◽

Optimization Method ◽

Ease Of Use ◽

Control Problems ◽

Design Problems ◽

Sensitivity Equations ◽

Smart Products ◽

Two Measures ◽

And Control ◽

Artifact Design

Optimization of smart products requires optimizing both the artifact design and its controller. The presence of coupling between the design and control problems is an important consideration in choosing the system optimization method. Several measures of coupling have been proposed based on different viewpoints of the system. In this paper, two measures of coupling, a vector based on optimality conditions and a matrix derived from an extension of the global sensitivity equations, are shown to be related under certain conditions and to be consistent in their coupling determination. The measures’ physical interpretation and relative ease of use are discussed using the example of a positioning gantry. A further relation is derived between one measure and a modified sequential formulation that would give results sufficiently close to the true solutions.

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EcoRacer: Game-Based Optimal Electric Vehicle Design and Driver Control Using Human Players

Journal of Mechanical Design ◽

10.1115/1.4033426 ◽

2016 ◽

Vol 138 (6) ◽

Cited By ~ 19

Author(s):

Yi Ren ◽

Alparslan Emrah Bayrak ◽

Panos Y. Papalambros

Keyword(s):

Optimization Problem ◽

Solution Space ◽

Efficient Global Optimization ◽

Vehicle Design ◽

Control Problems ◽

Short Term ◽

Algorithm Efficiency ◽

Np Complete ◽

And Control

We compare the performance of human players against that of the efficient global optimization (EGO) algorithm for an NP-complete powertrain design and control problem. Specifically, we cast this optimization problem as an online competition and received 2391 game plays by 124 anonymous players during the first month from launch. We found that while only a small portion of human players can outperform the algorithm in the long term, players tend to formulate good heuristics early on that can be used to constrain the solution space. Such constraining of the search enhances algorithm efficiency, even for different game settings. These findings indicate that human-assisted computational searches are promising in solving comprehensible yet computationally hard optimal design and control problems, when human players can outperform the algorithm in a short term.

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Robust PCL Discovery of Data-Driven Mean-Field Game Systems and Control Problems

IEEE Transactions on Circuits and Systems I Regular Papers ◽

10.1109/tcsi.2021.3065561 ◽

2021 ◽

pp. 1-14

Author(s):

Chun Li ◽

Yunyun Yang ◽

Hui Liang ◽

Boying Wu

Keyword(s):

Mean Field ◽

Data Driven ◽

Control Problems ◽

Mean Field Game ◽

Systems And Control ◽

And Control

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Numerical solution of optimal programming and control problems

Applied Optimal Control ◽

10.1201/9781315137667-7 ◽

2018 ◽

pp. 212-245

Author(s):

Arthur E. Bryson ◽

Yu-Chi Ho

Keyword(s):

Numerical Solution ◽

Control Problems ◽

Optimal Programming ◽

And Control

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DIGITAL AND PULSE-WIDTH CONTROL OF A SPACE ROBOT WHEN APPROACHING A GEOSTATIONARY SATELLITE

Izvestiya of Samara Scientific Center of the Russian Academy of Sciences ◽

10.37313/1990-5378-2020-22-5-74-78 ◽

2020 ◽

Vol 22 (5) ◽

pp. 74-78

Author(s):

Ye.I. Somov ◽

◽

S.A. Butyrin ◽

S.Ye. Somov ◽

◽

...

Keyword(s):

Pulse Width ◽

Electric Propulsion ◽

Pulse Width Modulation ◽

Geostationary Satellite ◽

Space Robot ◽

Control Algorithms ◽

Control Problems ◽

Guidance And Control ◽

Gyroscopic Moment ◽

And Control

The control problems on a space robot during its approach to an information geostationary satellite are considered. The robot motion control system uses an electric propulsion system with 8 engines at the pulse-width modulation of their thrust values and a gyroscopic moment cluster based on 4 gyrodines with digital control. Numerical results are presented that demonstrate the effectiveness of the developed discrete guidance and control algorithms.

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Retrieval priming in product verification: Evidence from retrieval-induced forgetting

Journal of Numerical Cognition ◽

10.5964/jnc.v4i3.156 ◽

2018 ◽

Vol 4 (3) ◽

pp. 572-589

Author(s):

Josh Neudorf ◽

Yalin Chen ◽

Jamie I. D. Campbell

Keyword(s):

Correct Answer ◽

Control Problems ◽

Single Digit ◽

Production Practice ◽

Induced Forgetting ◽

Product Verification ◽

And Control

The conditions under which multiplication verification (3 × 6 = 12, true or false?) involves product retrieval and comparison or familiarity-based recognition judgements has not been clearly established. In two experiments examining verification of single-digit multiplication problems, we used Retrieval-Induced Forgetting (RIF), a signature of retrieval use, as an index of product retrieval in multiplication verification. In Experiment 1, 72 adults practiced multiplication either in a production format or in a verification format and then were tested on corresponding addition and control problems. The results showed RIF (i.e., slower answer production for addition problems whose multiplication counterparts had been practiced) in both the production-practice and the verification-practice groups, but RIF was stronger following true than false verification. Experiment 2 tested verification with related-false and unrelated-false products. Related-false equations produced longer RTs than unrelated false equations. Practice of true, related-false and unrelated-false multiplication equations all produced RIF of the addition counterparts but, overall, related-false multiplication equations produced relatively weak RIF. The results indicated that product retrieval mediates multiplication verification even when false answers are weak associative lures and suggest that a retrieve-and-compare process is the default strategy when false answers are at least plausible. We conclude that the presented answer in verification equations act as retrieval-priming stimuli with true equations priming correct answer retrieval and related-false answers interfering with correct answer retrieval.

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