Abstract
This research presents the design and construction of measuring instruments for a dipole magnetic field using a rotating coil technique. This technique is a closed-loop speed-control system where a Proportional-Integral (PI) controller works together with the intensity measurement of the magnetic field through the rotating coil. It was used to analyze the impact on the accuracy of the electromagnetic at speed ranges of 60, 90, and 120 rpm. The error estimation in the measurement of the normal dipole and skew dipole magnet caused by the steady-state error of the speed control system and the rotational search coil in whirling motion are demonstrated. Rotating unbalance, shaft coupling, and misalignment from its setup disturbed the performance of the speed control system as a nonlinear system.
Highlights
Synchrotron light generators around the world use a considerable number of different electromagnets in electron storage rings such as dipole magnets, quadrupole magnets, and sextupole magnets
We used the obtained data to identify the mathematical model of a Direct Current (DC) motor by estimating variables with the MATLAB–Simulink program for mathematical model of a DC motor by estimating variables with the MATLAB–Simulink program the function of parameter estimation
Via the results of the experiment, the speed control system revealed that the errors in the steady-state response did affect the measured amplitude of the dipole magnetic field, and the orbit of the unbalanced motion was not affected, because the amplitude of the dipole magnetic field was not dependent on the position of the search coil
Summary
Synchrotron light generators around the world use a considerable number of different electromagnets in electron storage rings such as dipole magnets, quadrupole magnets, and sextupole magnets. The Synchrotron Light Research Institute (Public Organization), Thailand, realizes the importance of these errors and their effects; it plans to solve these problems in a sustainable way such as by reducing dependence from abroad and trying to build its own electromagnet with high standards [2]. This solution hopes to prevent damage to the electron storage ring (an abnormality) in the electromagnetic field, which takes a long time to repair and can cause further consequences for researchers who use synchrotron light. The Hall effect works when a magnetic field acts in the perpendicular direction with the Hall probe and causes a voltage known as “Hall pressure” [3]
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