Nonlinear droop compensation for current waveforms in MRI gradient systems.
Sign Up to like & getrecommendations! Published in 2022 at "Magnetic resonance in medicine"
DOI: 10.1002/mrm.29246
Abstract: PURPOSE Providing accurate gradient currents is challenging due to the gradient chain nonlinearities, arising from gradient power amplifiers and power supply stages. This work introduces a new characterization approach that takes the amplifier and power… read more here.
Keywords: controller; power supply; current waveforms; linear nonlinear ... See more keywords
Robust nonlinear controller design for uncertain hypersonic vehicles
Sign Up to like & getrecommendations! Published in 2019 at "CEAS Aeronautical Journal"
DOI: 10.1007/s13272-018-0320-5
Abstract: The problem of robust velocity and height control is dealt with for hypersonic vehicles subject to high nonlinearity and uncertainties. Robust linear controller design for nonlinear systems suffers from the problem of conservation because the… read more here.
Keywords: controller design; nonlinear controller; hypersonic vehicles; controller ... See more keywords
Design of a nonlinear controller and its intelligent optimization for exponential synchronization of a new chaotic system
Sign Up to like & getrecommendations! Published in 2017 at "Optik"
DOI: 10.1016/j.ijleo.2016.10.140
Abstract: Abstract This paper deals with the synchronization problem of two chaotic systems in a master-slave configuration. The two systems are based on a new chaotic system recently reported by Akgul and Pehlivan in [1]. The… read more here.
Keywords: new chaotic; intelligent optimization; nonlinear controller; chaotic system ... See more keywords
Nonlinear Controller Design for Tracking Task of a Control Moment Gyroscope Actuator
Sign Up to like & getrecommendations! Published in 2020 at "IEEE/ASME Transactions on Mechatronics"
DOI: 10.1109/tmech.2019.2946804
Abstract: Control moment gyroscopes (CMG) are widely used as actuators for attitude control of satellites and spacecraft, which requires the controller to fulfill the tracking task of a CMG in a wide operating range, despite its… read more here.
Keywords: control; control moment; controller; nonlinear controller ... See more keywords
A Novel Composite Nonlinear Controller for Stabilization of Constant Power Load in DC Microgrid
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Smart Grid"
DOI: 10.1109/tsg.2017.2751755
Abstract: Transportation electrification involves the wide utilization of power electronics based dc distribution networks and the integration of a large amount of power electronic loads. These power electronic loads, when tightly controlled, behave as constant power… read more here.
Keywords: load; power; controller; nonlinear controller ... See more keywords
Simulations and Flight Tests of a New Nonlinear Controller for the EAGLE Lander
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Spacecraft and Rockets"
DOI: 10.2514/1.a34161
Abstract: This paper describes the complete control strategy developed for EAGLE, a vertical-takeoff, vertical-landing vehicle conceived and realized by DLR, German Aerospace Center for the testing and the v... read more here.
Keywords: tests new; flight tests; new nonlinear; simulations flight ... See more keywords
Position Control Based on Add-on-Type Iterative Learning Control with Nonlinear Controller for Permanent-Magnet Stepper Motors
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11020587
Abstract: In this paper, a current-error-based iterative learning controller (ILC) with a nonlinear controller is proposed to improve the position-tracking performance in permanent-magnet (PM) stepper motors. Our proposed method comprises a current-error-based ILC for mechanical dynamics… read more here.
Keywords: control; controller; error; nonlinear controller ... See more keywords
Fault Ride Through Capability Improvement of DFIG Based Wind Farm Using Nonlinear Controller Based Bridge-Type Flux Coupling Non-Superconducting Fault Current Limiter
Sign Up to like & getrecommendations! Published in 2020 at "Energies"
DOI: 10.3390/en13071696
Abstract: High penetration of Doubly Fed Induction Generator (DFIG) into existing power grid can attribute complex issues as they are very sensitive to the grid faults. In addition, Fault Ride Through (FRT) is one of the… read more here.
Keywords: fault; bfc nsfcl; nonlinear controller; fault current ... See more keywords