In this study, a new field-programmable gate array (FPGA)-based electromagnetic stirrer system was developed allowing mixing on a single axis, and the energy efficiency of the system was increased with fuzzy logic control. The electromagnetic stirrer system was designed with three phases and each phase is fed with pulsewidth modulation (PWM) voltage with 120° phase difference. Ranked control of phases in the system used the FPGA structure in the myRIO ^® embedded system to determine the PWM signal production, increase intervals for phase frequencies, and rotation rate of the magnetic stir bar. In the system, to increase the energy efficiency with fuzzy logic control, the ARM ^® microcontroller structure in the myRIO ^® embedded system was used. Programming of the myRIO ^® embedded system was provided through the graphic-based LabVIEW ^® software. In situations where the system is operated with 100% duty cycle, the force affecting the magnetic stir bar should be continuous and have fixed value until the next phase change. As a result, the magnetic stir bar performs more than 120° rotation and a braking effect of the force is observed. To resolve this situation, fuzzy logic control ensured operation of a different duty cycle without loss of speed of the stir bar. Thus, the energy efficiency of the system was increased with lower current and lower stimulation duration. Within the scope of this article, the experimental results obtained about the structure, control, and energy efficiency of the electromagnetic stirrer system are discussed in detail.

中文翻译：

---

在基于 FPGA 的电磁搅拌器中使用模糊逻辑控制提高能效

在这项研究中，开发了一种新的基于现场可编程门阵列 (FPGA) 的电磁搅拌器系统，允许在单轴上混合，并通过模糊逻辑控制提高了系统的能效。电磁搅拌器系统设计为三相，每相都提供有 120° 相位差的脉宽调制 (PWM) 电压。系统中相位的分级控制使用 myRIO ^®嵌入式系统中的 FPGA 结构 来确定 PWM 信号的产生、增加相位频率的间隔以及磁力搅拌棒的转速。在系统中，为了通过模糊逻辑控制提高能效，myRIO ^{® 中}的 ARM ^®微控制器结构 使用了嵌入式系统。myRIO ^®嵌入式系统的编程 是通过基于图形的 LabVIEW ^{® 提供的}软件。在系统以 100% 占空比运行的情况下，影响磁力搅拌棒的力应该是连续的并具有固定值，直到下一个相变。结果，磁力搅拌棒旋转超过 120°，观察到力的制动效果。为了解决这种情况，模糊逻辑控制确保在不损失搅拌棒速度的情况下以不同的占空比运行。因此，系统的能量效率随着较低的电流和较短的刺激持续时间而增加。在本文的范围内，详细讨论了有关电磁搅拌器系统的结构、控制和能量效率的实验结果。