Variable Reluctance type Speed Sensor for Acidic and Radiation Environment

2021 ◽  
Author(s):  
Sthitapragyan Pattanayak ◽  
Sarat Kumar Dash ◽  
S. Sivakumar ◽  
G. Shanmugam
Keyword(s):  
Radiation Environment ◽  
Speed Sensor ◽  
Variable Reluctance

Pulsed Laser Stimulation Coupled with Optical Failure Analysis Technique—A Methodology to Help Space Application Electrical Designers

2015 ◽  
Author(s):  
G. Bascoul ◽  
K. Sanchez ◽  
G. Perez ◽  
F. Bezerra ◽  
H. Chauvin
Keyword(s):  
Heavy Ions ◽  
Pulsed Laser ◽  
Radiation Sensitivity ◽  
Radiation Environment ◽  
Physical Analysis ◽  
Space Application ◽  
Voltage Converter ◽  
Industrial Laboratory ◽  
Sensitivity Evaluation ◽  
Analysis Technique

Abstract Pulsed laser for radiation sensitivity evaluation has become a common tool used in research and industrial laboratory. This paper aims to highlight an approach to understand weaknesses of a component under radiation environment using a short pulsed width laser beam coupled to thermography technique, heavy ions test inputs and physical analysis. This paper is based on a study of a PWM device embedded on voltage converter.

Temporal Telomere and DNA Damage Responses in the Space Radiation Environment

2020 ◽  
Author(s):  
Jared J. Luxton ◽  
Miles J. McKenna ◽  
Lynn E. Taylor ◽  
Kerry A. George ◽  
Sara Zwart ◽  
...  
Keyword(s):  
Dna Damage ◽  
Space Radiation ◽  
Radiation Environment ◽  
Dna Damage Responses ◽  
Space Radiation Environment

On-board converter of signals of inductive sensors of speed IS-1165M1 with increased noise immunity

2017 ◽  
Vol 13 (3) ◽  
pp. 30-38
Author(s):  
Y. B. Gorbatkin ◽  
V. A. Chernyshev ◽  
S. S. Sevostyanov ◽  
A. V. Gladkov
Keyword(s):  
Noise Immunity ◽  
Dynamic Range ◽  
Rocket Engines ◽  
Flight Tests ◽  
Speed Sensor ◽  
Inductive Sensors ◽  
Turbo Pump

The article is devoted to the development of a secondary converter for measuring the speed of turbo-pump aggregates of rocket engines. The principle of the induction speed sensor is considered in the article. A method is proposed for generating output pulses from signals of induction speed sensors, which consists in the preliminary integration of the signals of the speed sensor. This method allows to increase the reliability and accuracy of the formation of signals of induction speed sensors, as well as to increase the noise immunity of the secondary converter and significantly increase the dynamic range of measuring the speed. The data of flight tests of the developed secondary converter are given.

Ultrasonic sensor system for the uses in intelligent motion control system of a mobile robots group

2010 ◽  
Vol 7 ◽  
pp. 109-117
Author(s):  
O.V. Darintsev ◽  
A.B. Migranov ◽  
B.S. Yudintsev
Keyword(s):  
Control System ◽  
Mobile Robot ◽  
Mobile Robots ◽  
Motion Control ◽  
High Speed ◽  
Ultrasonic Sensor ◽  
Sensor System ◽  
Motion Control System ◽  
Speed Sensor ◽  
Working Space

The article deals with the development of a high-speed sensor system for a mobile robot, used in conjunction with an intelligent method of planning trajectories in conditions of high dynamism of the working space.

A Slotless PM Variable Reluctance Resolver with Axial Magnetic Field

2021 ◽  
pp. 1-1
Author(s):  
Le Sun ◽  
Zhejun Luo ◽  
Jun Hang ◽  
Shichuan Ding ◽  
Wei Wang
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Variable Reluctance

scholarly journals Uncertainty Evaluation of Wind Speed Sensor in Automatic Weather Station

2021 ◽  
Vol 768 (1) ◽  
pp. 012008
Author(s):  
Zhen Yang ◽  
Husheng Zhang ◽  
Qiang Wang ◽  
Cuicui Li ◽  
Wenlong Xu ◽  
...  
Keyword(s):  
Wind Speed ◽  
Uncertainty Evaluation ◽  
Weather Station ◽  
Automatic Weather Station ◽  
Speed Sensor

Kinetics studies on free radical scavenging property of ceria in polysulfone–ceria radiation resistant mixed-matrix membrane

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Amita Bedar ◽  
Beena G. Singh ◽  
Pradip K. Tewari ◽  
Ramesh C. Bindal ◽  
Soumitra Kar
Keyword(s):  
Radical Scavenging ◽  
Radiation Environment ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Ceria Nanoparticles ◽  
Ros Scavenging ◽  
Mixed Matrix ◽  
Stable States ◽  
Host Matrix ◽  
Γ Radiation

Abstract Cerium oxide (ceria) contains two stable states of cerium ions (Ce3+ and Ce4+). The presence of these two states and the ability to swap from one state to another (Ce3+ ↔ Ce4+) by scavenging the highly reactive oxygen species (ROS) generated from radiolysis of water, ensure the enhanced stability of polysulfone (Psf) membranes in the γ-radiation environment. In this study, the ROS scavenging ability of ceria was studied. Ceria nanoparticles were found to scavenge ROS like hydroxyl radicals and hydrogen peroxide (H2O2). The H2O2 scavenging is due to the peroxidase-like catalytic activity of ceria nanoparticles. The ROS scavenging is responsible for offering protection to the Psf host matrix and in turn the stability to the Psf-ceria mixed-matrix membranes (MMMs) in γ-radiation environment. Thus, presence of ceria nanoparticles provides an opportunity for utilizing Psf-ceria MMMs in ionizing radiation environment with increased life span, without compromise in the performance.

Observations of neutron radiation environment during Odyssey cruise to Mars

2021 ◽  
Vol 29 ◽  
pp. 53-62
Author(s):  
M.L. Litvak ◽  
I.G. Mitrofanov ◽  
A.B. Sanin ◽  
B. Bakhtin ◽  
D.V. Golovin ◽  
...  
Keyword(s):  
Neutron Radiation ◽  
Radiation Environment

scholarly journals A High Sensitivity Self-Powered Wind Speed Sensor Based on Triboelectric Nanogenerators (TENGs)

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 2951
Author(s):  
Yangming Liu ◽  
Jialin Liu ◽  
Lufeng Che
Keyword(s):  
Wind Speed ◽  
High Sensitivity ◽  
Electrical Signal ◽  
Geometrical Parameters ◽  
Sensor Systems ◽  
Speed Sensor ◽  
Speed Range ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
Application Prospects

Triboelectric nanogenerators (TENGs) have excellent properties in harvesting tiny environmental energy and self-powered sensor systems with extensive application prospects. Here, we report a high sensitivity self-powered wind speed sensor based on triboelectric nanogenerators (TENGs). The sensor consists of the upper and lower two identical TENGs. The output electrical signal of each TENG can be used to detect wind speed so that we can make sure that the measurement is correct by two TENGs. We study the influence of different geometrical parameters on its sensitivity and then select a set of parameters with a relatively good output electrical signal. The sensitivity of the wind speed sensor with this set of parameters is 1.79 μA/(m/s) under a wind speed range from 15 m/s to 25 m/s. The sensor can light 50 LEDs at the wind speed of 15 m/s. This work not only advances the development of self-powered wind sensor systems but also promotes the application of wind speed sensing.

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