Results 51 to 60 of about 51,039 (292)

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

Flight control law of unmanned aerial vehicles based on robust servo linear quadratic regulator and Kalman filtering

open access: yesInternational Journal of Advanced Robotic Systems, 2017
A new flight control law for unmanned aerial vehicles based on robust servo linear quadratic regulator control and Kalman filtering is proposed. This flight control law has a simple structure with high dependability in engineering.
Yongfeng Zhi   +4 more
doaj   +1 more source

Wet Ball Milling Synthesis of Iron Oxide Nanoparticles for High‐Efficiency, Controllable Magnetic Hyperthermia in Ovarian Cancer

open access: yesAdvanced Materials Technologies, EarlyView.
A wet ball‐milling method is presented to synthesize iron magnetic nanoparticles and evaluate their magnetic hyperthermia performance. Optimized particles (∼270 nm, Ms ∼114 emu/g) achieve ∼50°C heating under clinically safe alternating magnetic fields, while pulsed‐field operation enables controlled temperature regulation (∼30°C).
Shahriar Mostufa   +10 more
wiley   +1 more source

Model Predictive Control Based on Intelligent Model for Low Earth Orbit Satellite [PDF]

open access: yesفناوری در مهندسی هوافضا, 2021
In this paper, an orbit control algorithm is implemented for low earth orbit (LEO) satellites, using artificial neural networks (ANN), model-based predictive control (MPC), and linear quadratic regulator (LQR).
Taha Yasini   +2 more
doaj  

The Fundamental Limitations of Learning Linear-Quadratic Regulators

open access: yes2023 62nd IEEE Conference on Decision and Control (CDC), 2023
We present a local minimax lower bound on the excess cost of designing a linear-quadratic controller from offline data. The bound is valid for any offline exploration policy that consists of a stabilizing controller and an energy bounded exploratory input.
Lee, Bruce D.   +4 more
openaire   +3 more sources

Robust and Resilient State-dependent Control of Continuous-time Nonlinear Systems with General Performance Criteria [PDF]

open access: yes, 2014
A novel state-dependent control approach for continuous-time nonlinear systems with general performance criteria is presented in this paper. This controller is optimally robust for model uncertainties and resilient against control feedback gain ...
Long, James, Wang, Xin, Yaz, Edwin E.
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Perbaikan Kestabilan Dinamik Sistem Tenaga Listrik Multimesin dengan Metoda Linear Quadratic Regulator

open access: yesJurnal Nasional Teknik Elektro, 2013
System stability is an inportant part in the planning and operation of electric power systems, especially dynamic stability. The ability of a power system to maintain stability under small disturbances defined as dynamic stability.
Aidil Danas   +2 more
doaj   +1 more source

Distributed Spacecraft Path Planning and Collision Avoidance via Reciprocal Velocity Obstacle Approach [PDF]

open access: yes, 2017
This paper presents the development of a combined linear quadratic regulation and reciprocal velocity obstacle (LQR/RVO) control algorithm for multiple satellites during close proximity operations.
Ceriotti, Matteo   +2 more
core  

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang   +14 more
wiley   +1 more source

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