Results 61 to 70 of about 230,932 (286)

Maximum Principle for Delayed Stochastic Linear-Quadratic Control Problem with State Constraint

open access: yesJournal of Applied Mathematics, 2013
This paper is concerned with one kind of delayed stochastic linear-quadratic optimal control problems with state constraints. The control domain is not necessarily convex and the control variable does not enter the diffusion coefficient.
Feng Zhang
doaj   +1 more source

Optimal Control of TBCC Engines in Mode Transition

open access: yesEnergies, 2023
This paper mainly studies the optimal control problem of turbine-based combined cycle (TBCC) engines in the mode-transition stage. Based on the TBCC scheme proposed by Xiamen University, an aerothermodynamic model is established as a verification model ...
Zengming He, Junlong Zhang, Hongfei Sun
doaj   +1 more source

On solvability of an indefinite Riccati equation [PDF]

open access: yes, 2013
This note concerns a class of matrix Riccati equations associated with stochastic linear-quadratic optimal control problems with indefinite state and control weighting costs. A novel sufficient condition of solvability of such equations is derived, based
Du, Kai
core  

Single Solid‐State Ion Channels as Potentiometric Nanosensors

open access: yesAdvanced Functional Materials, EarlyView.
Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi   +4 more
wiley   +1 more source

Feedback Control Method Using Haar Wavelet Operational Matrices for Solving Optimal Control Problems

open access: yesAbstract and Applied Analysis, 2013
Most of the direct methods solve optimal control problems with nonlinear programming solver. In this paper we propose a novel feedback control method for solving for solving affine control system, with quadratic cost functional, which makes use of only ...
Waleeda Swaidan, Amran Hussin
doaj   +1 more source

On the Design of LQR Kernels for Efficient Controller Learning

open access: yes, 2017
Finding optimal feedback controllers for nonlinear dynamic systems from data is hard. Recently, Bayesian optimization (BO) has been proposed as a powerful framework for direct controller tuning from experimental trials. For selecting the next query point
Hennig, Philipp   +3 more
core   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee   +17 more
wiley   +1 more source

Using block pulse functions for seismic vibration semi-active control of structures with MR dampers

open access: yesResults in Physics, 2018
This article applied the idea of block pulse functions in the semi-active control of structures. The BP functions give effective tools to approximate complex problems.
Saeed Rahimi Gendeshmin, Daniel Davarnia
doaj   +1 more source

Optimal adaptive control for a class of stochastic systems [PDF]

open access: yes, 1994
We study linear-quadratic adaptive tracking problems for a special class of stochastic systems expressed in the state-space form. This is a long-standing problem in the control of aircraft flying through atmospheric turbulence.
Bagchi, Arunabha, Chen, Han-Fu
core   +1 more source

Tropical Kraus maps for optimal control of switched systems

open access: yes, 2017
Kraus maps (completely positive trace preserving maps) arise classically in quantum information, as they describe the evolution of noncommutative probability measures.
Gaubert, Stéphane, Stott, Nikolas
core   +1 more source

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