Results 41 to 50 of about 322,300 (286)

Noncommutative Polynomial Optimization

, 2022
In this chapter we present the sums of Hermitian squares approach to noncommutative polynomial optimization problems. This is an extension of the sums of squares approach for polynomial optimization arising from real algebraic geometry. We provide a gentle introduction to the underlying theory of this methodology and highlight its importance.
Bhardwaj, Abhishek, Klep, Igor, Magron, Victor   +2 more
openaire   +2 more sources

Design and analysis of herringbone gear with sixth-order transmission error based on meshing vibration optimization

Advances in Mechanical Engineering, 2017
To reduce the herringbone gear transmission vibration and noise, an optimization design method about the meshing vibration of herringbone gear is provided with a controllable sixth-order polynomial function of transmission error.
Feng Wang, Xing Xu, Zongde Fang, Long Chen   +3 more
doaj   +1 more source

Polynomial Method for PLL Controller Optimization

Sensors, 2011
The Phase-Locked Loop (PLL) is a key component of modern electronic communication and control systems. PLL is designed to extract signals from transmission channels.
Tsung-Yu Chiou, Ta-Chung Wang, Sanjay Lall   +2 more
doaj   +1 more source

Response analysis and optimization of the air spring with epistemic uncertainties

Reviews on Advanced Materials Science, 2022
Traditional methods for the optimization design of the air spring are based on the deterministic assumption that the parameters are fixed. However, uncertainties widely exist during the manufacturing stage of the air spring. To model the uncertainties in
Kong Feng, Bai Yu, Liang Xifeng, Lu Zhaijun, Yin Shengwen   +4 more
doaj   +1 more source

AC/DC optimal power flow and techno-economic assessment for hybrid microgrids: TIGON CEDER demonstrator

Frontiers in Energy Research
In recent years, the interest in electric direct current (DC) technologies (such as converters, batteries, and electric vehicles) has increased due to their potential in energy efficiency and sustainability. However, the vast majority of electric systems
Alejandro Martín-Crespo, Alejandro Hernández-Serrano, Óscar Izquierdo-Monge, Paula Peña-Carro, Ángel Hernández-Jiménez, Fernando Frechoso-Escudero, Enrique Baeyens   +6 more
doaj   +1 more source

A Tensor Analogy of Yuan's Theorem of the Alternative and Polynomial Optimization with Sign structure

, 2014
Yuan's theorem of the alternative is an important theoretical tool in optimization, which provides a checkable certificate for the infeasibility of a strict inequality system involving two homogeneous quadratic functions.
Hu, Shenglong, Li, Guoyin, Qi, Liqun
core   +1 more source

Dynamic Obstacle Avoidance for an MAV Using Optimization-Based Trajectory Prediction With a Monocular Camera

IEEE Access
Vision-based algorithms are widely applied to micro-air vehicles (MAVs) because of their limited takeoff weight. Conventional stereo camera requires a large baseline for long-distance detection, which is difficult for MAVs.
Miaojun Zhou, Hyeonbeom Lee
doaj   +1 more source

Global Optimization for the Sum of Certain Nonlinear Functions

Abstract and Applied Analysis, 2014
We extend work by Pei-Ping and Gui-Xia, 2007, to a global optimization problem for more general functions. Pei-Ping and Gui-Xia treat the optimization problem for the linear sum of polynomial fractional functions, using a branch and bound approach.
Mio Horai, Hideo Kobayashi, Takashi G. Nitta   +2 more
doaj   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source