Results 121 to 130 of about 15,866 (229)

Enhancing stability and position control of a constrained magnetic levitation system through optimal fractional-order PID controller

Alexandria Engineering Journal
Magnetic levitation systems are complex and nonlinear, requiring sophisticated control methods to maintain the stability and position of the levitated object.
Abdullah Mughees, Neelam Mughees, Anam Mughees, Syed Ali Mohsin, Krzysztof Ejsmont   +4 more
doaj   +1 more source

Magnetic Levitation for Long-Life Space Mechanisms: Technology Assessment and Remaining Challenges [PDF]

Spacecraft mechanisms and mechanical systems must operate reliably and without failure to enable successful, long-term space missions. Such requirements place demands upon the tribological elements, especially bearings, which are frequently difficult or ...
DellaCorte, Christopher, Dube, Michael J., Howard, Samuel A.   +2 more
core   +1 more source

Neural network-based adaptive super-twisting sliding mode control for hybrid magnetic levitation system with external disturbance

Engineering Science and Technology, an International Journal
Hybrid magnetic levitation system compared with pure electromagnetic levitation system, because of the introduction of permanent magnets, the hybrid levitation system is more sensitive to parameter uncertainty and external disturbance.
Menglei Zhang, Liwei Zhang, Lu Shen
doaj   +1 more source

Electromagnetic levitation coil fabrication technique for MSFC containerless processing facilities [PDF]

A technique is described for more reproducible fabrication of electromagnetic levitation coils. A split mandrel was developed upon which the coil is wound. After fabrication the mandrel can be disassembled to remove it from the coil.
Abbaschian, G. J., Curreri, P. A., Ethridge, E. C., Theiss, J.   +3 more
core   +1 more source

Magnetically Levitated and Guided Systems

Advances in Science, Technology and Engineering Systems Journal, 2017
Florian Puci, Miroslav Husak
openaire   +1 more source

Influence of gravity on the collective molecular dynamics of liquid water: the case of the floating water bridge

, 2010
Quantum electrodynamics (QED) produces a picture of liquid water as a mixture of a low density coherent phase and an high density non-coherent phase.
Del Giudice, Emilio, Vitiello, Giuseppe
core  

Real-Time Adaptive Control of a Magnetic Levitation System with a Large Range of Load Disturbance. [PDF]

Sensors (Basel), 2018
Zhang Z, Li X.
europepmc   +1 more source

Description of the Large Gap Magnetic Suspension System (LGMSS) ground-based experiment [PDF]

A description of the Large Gap Magnetic Suspension System (LGMSS) ground-based experiment is presented. The LGMSS provides five degrees of freedom control of a cylindrical suspended element which is levitated above a floor-mounted array of air core ...
Groom, Nelson J.
core   +1 more source

Sample positioning in microgravity [PDF]

Repulsion forces arising from laser beams are provided to produce mild positioning forces on a sample in microgravity vacuum environments. The system of the preferred embodiment positions samples using a plurality of pulsed lasers providing opposing ...
Sridharan, Govind
core   +1 more source

Adaptive control of magnetic levitation system based on fuzzy inversion. [PDF]

Sci Rep
Jastrzębski M, Kabziński J.
europepmc   +1 more source