Results 61 to 70 of about 54,969 (263)

Theoretical analysis and experimental validation of a simplified fractional order controller for a magnetic levitation system [PDF]

, 2015
Fractional order (FO) controllers are among the emerging solutions for increasing closed-loop performance and robustness. However, they have been applied mostly to stable processes.
De Keyser, Robain, Folea, Silviu, Ionescu, Clara-Mihaela, Muresan, Cristina I   +3 more
core   +1 more source

Analysis and Control Design for a Class of Fractional Order Time-Delay Systems

Algerian Journal of Signals and Systems, 2020
In this paper, we consider a class of fractional order time-delay systems and propose a fractional order control design for their stabilization. The controller parameter’s adjustment is achieved in two steps: first, the relay approach is used to compute
Marwa BOUDANA, Samir LADACI, Jean Jacques LOISEAU   +2 more
doaj   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

Advanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Research on PMSM Speed Performance Based on Fractional Order Adaptive Fuzzy Backstepping Control

Energies, 2023
A permanent magnet synchronous motor (PMSM) is a nonlinear, strongly coupled, controlled object with time-varying, fractional-order characteristics. It is difficult to achieve the ideal control effect by using the traditional control method when motor ...
Lei Zhang, Jiaqing Ma, Qinmu Wu, Zhiqin He, Tao Qin, Changsheng Chen   +5 more
doaj   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced 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, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Fractional Order Fuzzy Control of Nuclear Reactor Power with Thermal-Hydraulic Effects in the Presence of Random Network Induced Delay and Sensor Noise having Long Range Dependence

, 2013
Nonlinear state space modeling of a nuclear reactor has been done for the purpose of controlling its global power in load following mode. The nonlinear state space model has been linearized at different percentage of reactor powers and a novel fractional
Das, Saptarshi, Das, Shantanu, Pan, Indranil   +2 more
core   +1 more source

Fractional Model Reference Adaptive PIλDμ Control

Journal of New Results in Science, 2016
This study explains the auto-adjustable fractional order the proportional–integral–derivative (PID) controller design methodology by using the technique of fractional model reference adaptive control (fractional MRAC).
Hüseyin Arpacı, Ömerül Faruk Özgüven, Mehmet Serhat Can   +2 more
doaj  

Improvement of predictive control algorithm based on fuzzy fractional order PID

Journal of Intelligent Systems, 2023
The existing predictive control strategy has comprehensive prior knowledge of the controlled process, requires weak continuity of the search space for parameter optimization, and its application is limited to some extent.
Shi Rongzhen
doaj   +1 more source

Trajectory Tracking Control of Quadrotor Based on Fractional-Order S-Plane Model

Machines, 2023
Quadrotors possess traits such as under-actuation, nonlinearity, and strong coupling. Quaternions are primarily used for attitude calculations in drones, with error quaternions seldom being employed directly in the control of specific quadcopter drones ...
Jiacheng Li, Pengyun Chen, Zhe Chang, Guobing Zhang, Luji Guo, Chenbo Zhao   +5 more
doaj   +1 more source

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

Advanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta, Yinghao Zhao, Jose Mendoza‐Carreño, José M. Caicedo, José Santiso, C. David Wright, M. Isabel Alonso, Jiafang Li, Agustin Mihi   +8 more
wiley   +1 more source