scholarly journals Magnetic Force-Propelled 3D Locomotion Control for Magnetic Microrobots via Simple Modified Three-axis Helmholtz Coil System

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Armando Ramos-Sebastian ◽  
Sung Hoon Kim
Keyword(s):  
Magnetic Force ◽  
Helmholtz Coil ◽  
Locomotion Control ◽  
Coil System ◽  
Magnetic Microrobots

scholarly journals Tri Axial Square Helmholtz Coil system at the Alibag Magnetic Observatory: Upgraded to Magnetic Sensor calibration facility

2017 ◽  
Author(s):  
Prasanna Mahavarkar ◽  
Jacob John ◽  
Vijay Dhapre ◽  
Varun Dongre ◽  
Sachin Labde
Keyword(s):  
Current Source ◽  
Helmholtz Coil ◽  
Constant Current ◽  
Test Facility ◽  
Sensor Calibration ◽  
Magnetic Observatory ◽  
Data Logging ◽  
Constant Current Source ◽  
Technical Problems ◽  
Coil System

Abstract. A Tri Axial Square Helmholtz Coil system for the study of palaeomagnetic studies was successfully commissioned at the Alibag magnetic observatory in the year 1985. This system was used for few years after which the system encountered technical problems with the control unit. Rectification of the same could not be undertaken as the information document related to this system was not available and as a result the said system had been lying in an un-used state for a long time until 2015 when the system was re-commissioned and upgraded as a test facility for calibrating the magnetometer sensors. We have upgraded the system with a constant current source and a data logging unit. Both these units have been designed and developed in the institute laboratory. Also re-measurements of the existing system have been made thoroughly. The upgraded system is semi automatic, enabling non-specialists to operate it after a brief period of instruction. This facility is now in broad use for the parent institute and external institutions to calibrate their magnetometers and also serves as a national facility. Here the design of this system with the calibration results for the space borne fluxgate magnetometers is presented.

Rotating/Helmholtz coil system using a lock-in amplifier method

1998 ◽  
Vol 5 (3) ◽  
pp. 475-477 ◽  
Author(s):  
T. Tanabe ◽  
H. Kitamura
Keyword(s):  
Magnetic Flux ◽  
Storage Ring ◽  
Magnetic Induction ◽  
Magnetization Vector ◽  
Helmholtz Coil ◽  
Coil System ◽  
Lock In

Measurement of integrated magnetic induction is an important part of the construction of insertion devices. The so-called `flipping coil system' is normally utilized to characterize the integrated multipole components of the device, a requirement which varies from one storage ring to another. A Helmholtz coil system is used to determine a magnetization vector of each magnet piece in the device. Both systems are designed to measure the integrated magnetic flux to deduce the necessary quantities using the known relationship. We have developed an unconventional system which has a continuously rotating mechanism that allows the use of a lock-in amplifier instead of an integrator or a voltmeter. Detailed descriptions of the equipment are given.

scholarly journals Calculation of magnetic field strength for coil system designed to free from magnetic force and to confine the high .BETA. plasma.

1995 ◽  
Vol 7 (3/4) ◽  
pp. 193-196
Author(s):  
Katsuhiko SUNAKO ◽  
Takeshi YOSHIDA ◽  
Akihiro MATSUBARA ◽  
Akira TONEGAWA ◽  
Kenzo NANRI ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Magnetic Force ◽  
Coil System ◽  
High Beta

scholarly journals Design and construction of 3D Helmholtz coil system to calibrate 3D Hall probes

2019 ◽  
Vol 1350 ◽  
pp. 012167
Author(s):  
A. Fontanet ◽  
J. Marcos ◽  
Ll. Ribó ◽  
V. Massana ◽  
J. Campmany
Keyword(s):  
Helmholtz Coil ◽  
Coil System ◽  
Hall Probes ◽  
Design And Construction

scholarly journals Diseño e implementación de un sistema de control de bobinas Helmholtz para la caracterización de micro y nanopartículas

2019 ◽  
pp. 19-26
Author(s):  
Reyna Michelle Rodriguez-Rizo ◽  
Azdrubal Lobo Guerrero-Serrano ◽  
Jesús Hazael Garcia-Gallegoz ◽  
Javier Gustavo Cabal-Velarde
Keyword(s):  
Uniform Magnetic Field ◽  
Helmholtz Coil ◽  
Uniform Field ◽  
Kinetic Characterization ◽  
Magnetic Microparticles ◽  
Helmholtz Coils ◽  
Coil System ◽  
Stepper Motors ◽  
Silicone Matrix

In this work we develop a system of arrangements of two pairs of Helmholtz coils positioned on the “x” and “y” axis for the kinetic characterization of microbots in a liquid medium at different densities. These spherical microbots are synthesized with magnetite magnetic microparticles embedded in a polymeric silicone matrix. One of the most specific contributions is the development of an automated Helmholtz coil arrangement system, which, when moved by stepper motors, the Helmholtz coil system becomes Maxwell coil system as distances are modified, causing distances a uniform field gradient instead of a uniform magnetic field. This system can be used in the redirection of microbots for the elimination of cancer cells by means of the hyperthermia technique; In addition, you can transport medications to specific areas for treatment because these microbots are biocompatible with the human body.

scholarly journals Tri-axial square Helmholtz coil system at the Alibag Magnetic Observatory: upgraded to a magnetic sensor calibration facility

2018 ◽  
Vol 7 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Prasanna Mahavarkar ◽  
Jacob John ◽  
Vijay Dhapre ◽  
Varun Dongre ◽  
Sachin Labde
Keyword(s):  
Current Source ◽  
Helmholtz Coil ◽  
Constant Current ◽  
Test Facility ◽  
Sensor Calibration ◽  
Magnetic Observatory ◽  
Data Logging ◽  
Constant Current Source ◽  
Technical Problems ◽  
Coil System

Abstract. A tri-axial square Helmholtz coil system for the study of palaeomagnetic studies, manufactured by GEOFYZIKA (former Czechoslovakia), was successfully commissioned at the Alibag Magnetic Observatory (IAGA code: ABG) in the year 1985. This system was used for a few years, after which the system encountered technical problems with the control unit. Rectification of the unit could not be undertaken, as the information document related to this system was not available, and as a result the system had been lying in an unused state for a long time, until 2015, when the system was recommissioned and upgraded to a test facility for calibrating the magnetometer sensors. We have upgraded the system with a constant current source and a data-logging unit. Both of these units have been designed and developed in the institute laboratory. Also, re-measurements of the existing system have been made thoroughly. The upgraded system is semi-automatic, enabling non-specialists to operate it after a brief period of instruction. This facility is now widely used at the parent institute and external institutions to calibrate magnetometers and it also serves as a national facility. Here the design of this system with the calibration results for the space-borne fluxgate magnetometers is presented.

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