Stability Analysis of a Linear Reactor System with Feedback under Low-Flow, Low-Power Conditions

1993 ◽  
Vol 113 (3) ◽  
pp. 251-263 ◽  
Author(s):  
E. V. Depiante
Keyword(s):  
Stability Analysis ◽  
Low Power ◽  
Reactor System ◽  
Low Flow

Surface solitons supported by 𝒫𝒯-symmetric lattice with spatially modulated nonlinearity

2017 ◽  
Vol 26 (01) ◽  
pp. 1750001 ◽  
Author(s):  
Xin Li ◽  
Rangang Yu ◽  
Neng Zhang
Keyword(s):  
Stability Analysis ◽  
Low Power ◽  
Periodic Systems ◽  
Stable Domain ◽  
Power Domain ◽  
Existence Domain ◽  
Existence And Stability

We report on the formation and stability of induced surface solitons in parity–time ([Formula: see text]) symmetric periodic systems with spatially modulated nonlinearity. We discover that the spatially modulation of the nonlinearity can affect the existence and stability of surface solitons. These surface solitons can be formed in the semi-infinite and first bandgap. Stability analysis shows that odd surface solitons belonging to semi-infinite bandgap are linearly stably in low power domain, and the stable domain becomes narrow with increasing the strength of spatially modulated nonlinearity, both even surface solitons in semi-infinite bandgap and surface solitons in first bandgap are unstable in their existence domain.

scholarly journals Study on Multi-DOF Actuator for Improving Power Density

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4204
Author(s):  
Sooyoung Cho ◽  
Ho Joon Lee ◽  
Ju Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stability Analysis ◽  
Low Power ◽  
Power Density ◽  
Eddy Current ◽  
Pitch Angle ◽  
Eddy Current Loss ◽  
Element Analysis ◽  
Output Characteristics

This study focuses on improving the power density of a spherical multi-degree-of-freedom (multi-DOF) actuator. A spherical multi-DOF actuator that can operate in three DOFs is designed. The actuator features a double air gap to reduce eddy current loss. However, a multi-DOF actuator driven by a single actuator exhibits low power density. Therefore, a Halbach magnet array is applied to improve the power density of a spherical multi-DOF actuator, and its output characteristics are compared with those of an existing spherical multi-DOF actuator via finite element analysis. Additionally, the output characteristics are analyzed based on changes in the coil pitch angle and magneto-motive force of the rotating winding. Furthermore, it is necessary for a spherical multi-DOF actuator to move to the command position. Hence, a stability analysis is performed to ensure that the spherical multi-DOF actuator is stably driven based on the command position.

A Comparison of Excitation Conditions between Conventional and Low-Flow, Low-Power Inductively Coupled Plasma Torches

1986 ◽  
Vol 40 (2) ◽  
pp. 265-270 ◽  
Author(s):  
L. L. Burton ◽  
M. W. Blades
Keyword(s):  
Low Power ◽  
Inductively Coupled Plasma ◽  
Gas Flow ◽  
Flow Dynamics ◽  
Radial Position ◽  
Low Flow ◽  
Inductively Coupled ◽  
Plasma Torches ◽  
Excitation Conditions

FeI excitation temperatures have been measured for both conventional and low-flow, low-power ICP torches. Temperatures were measured from 0 to ± 6 mm radial position at 4, 8, 12, 16, and 20 mm above the load coil. In addition, radial and vertical spatial emission profiles for FeI and FeII have been measured for both torches. The results indicate that the gas flow dynamics are different for the two torches and this in turn creates a different excitation environment for each torch.

A low-flow low-power helium microwave induced plasma for optical and mass spectrometry with solution nebulization

2008 ◽  
Vol 23 (9) ◽  
pp. 1234 ◽  
Author(s):  
Krzysztof Jankowski ◽  
Adrianna Jackowska ◽  
Andrzej P. Ramsza ◽  
Edward Reszke
Keyword(s):  
Mass Spectrometry ◽  
Low Power ◽  
Low Flow ◽  
Microwave Induced Plasma
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