Optimum design of a three-axis magnetic field simulator

Pastena, Massimiliano; Grassi, Michele

doi:10.1109/taes.2002.1008981

Cited by 20 publications

(8 citation statements)

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“…A magnetic field generated by electric current can be treated as a macroscopic current in wire. Considering a current element, the magnetic field B at a given point P is obtained by Biot–Savart law and can be expressed as [ 12 , 13 , 14 , 15 , 16 ].

where

is the vector from the differential current element generic field point P .…”

Section: System Designmentioning

confidence: 99%

A Magnetic Field Canceling System Design for Diminishing Electromagnetic Interference to Avoid Environmental Hazard

Song

Lin

Manikandan

et al. 2022

IJERPH

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Electromagnetic interference is a serious and increasing form of environmental pollution, creating many issues in the areas of health care and industrial manufacturing. The performance of high-precision measurement equipment used in health care and the manufacturing industry is sensitive to electromagnetic interference. However, extremely low-frequency magnetic fields (ELFMF), with a frequency range from 3 to 30 Hz, generated by high-power lines have become the main interference source in high-tech foundries. This paper presents a magnetic cancelling system that works by combining active cancelling technology and passive cancelling technology to reduce the ELFMF around high-precision measurement equipment. The simulation and experimental results show the validity and feasibility of the proposed system.

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where

is the vector from the differential current element generic field point P .…”

Section: System Designmentioning

confidence: 99%

A Magnetic Field Canceling System Design for Diminishing Electromagnetic Interference to Avoid Environmental Hazard

Song

Lin

Manikandan

et al. 2022

IJERPH

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show abstract

“…Така конструкція має назву клітки Гельмгольца. Подібна система описана у багатьох літературних джерелах [5], [6], [7]. Після вивчення цього матеріалу слід виділити наступні твердження:  Котушки квадратної форми простіші в реалізації та забезпечують більшу зону однорідності магнітного поля у порівнянні з круглими котушками такого ж розміру [5], [7].…”

Section: імітатор магнітного поляunclassified

Magnetic Field Simulator Control System for Nanosatellites

Padun

Serhieiev

Lysiuk

et al. 2022

Microsyst., Electron. & Acoust.

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Nano- and microsatellites are becoming more and more popular in the last ten years. The main reason for this is the low cost of their development and launch. Two such satellites of the CubeSat format have already been developed at the Igor Sikorsky Kyiv Polytechnic Institute. They have successfully completed their missions in orbit. Work on a new satellite is underway. Before flying into orbit, all satellites must pass a large number of ground tests. An important part of almost every satellite is its subsystem of orientation and stabilization. Since it contains magnetic sensors and electromagnets, special magnetic field simulators are used to test it. Such a simulator must create a uniform magnetic field with the required parameters. The most common design used to simulate a magnetic field is a Helmholtz cage. It was built in the nanosatellite laboratory of the Igor Sikorsky Kyiv Polytechnic Institute. This paper deals with the development of a control system for it. In the beginning, the design, parameters, and operation principle of the Helmholtz cage were described. It consists of six electromagnetic square shape coils with a side of 1.5 meters. Each coil has 52 turns of 1.29 mm wire. Such dimensions make it possible to obtain a spherical zone of uniformity of the magnetic field with a radius of 293 mm. The control system should regulate the current in the coils, change its direction and also control the parameters of the generated magnetic field. The existing solutions for such a system were analyzed. As a result, it was decided to use an H bridge circuit and pulse width regulation. The structural and schematic diagrams of the control system were developed. Were selected all necessary components, such as power module, central processing unit, microcontroller for PWM signal generation, and magnetometer for magnetic field control. To reduce the ripple of the output current, an RLC filter for the coil driver was developed. Its frequency response, current and voltage curves of its load were calculated analytically and coincided with practical results. An experimental layout of the control system was assembled. As a result of the tests, it was found that the system regulates the current in the coil from 0 to 6.8 A and can change its direction. The current ripple in the coils does not exceed 1 mA (peak-to-peak) at an average current of 0,574 A. The duration of the transient in the system is about 23 ms. These values meet the requirements and allow simulating any mode of satellite flight in orbit. The developed control system for the magnetic simulator allows testing the magnetic orientation systems of nanosatellites developed at Igor Sikorsky Kyiv Polytechnic Institute and will help in their preparation for the flight.

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“…A Helmholtz cage is a device that is capable of producing a controlled magnetic field. The use of such a system is related to several research activities in various fields [1], [2], [3], [4], [5]. Among several configurations of magnetic field simulators, the Helmholtz cage is considered one of the simplest [6].…”

Section: Introductionmentioning

confidence: 99%