Kim Jaeyoung, Ha Chang-Wan, King Galen B, Kim Chang-Hyun
Korea Institute of Machinery and Materials, Daejeon, 34103, South Korea.
School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN, 47907-2088, USA.
ISA Trans. 2020 Jun;101:358-365. doi: 10.1016/j.isatra.2020.01.026. Epub 2020 Jan 31.
In this paper, we present the experimental levitation control development in a high-accuracy magnetic levitation transport system. With this levitation control implementation, the input and output of sub-systems can be verified through a real-time system. The levitation control loop has a fast response, and the control algorithms are easily implemented. In addition, a notch filter and a low-pass filter are designed to minimize mechanical resonance and sensor noise, respectively. Moreover, a section control algorithm is developed to reduce sudden changes in the levitation forces. From the results, the total current required to levitate the carrier is approximately 3.1 A, and it is decreased to approximately 2.45 A at the desired airgap. The maximum peak-to-peak variation of the airgap measurement at a standstill is approximately 50μm, and at low and high movement speeds, it is approximately 300μm and 700μm, respectively. Moreover, the good levitation control performance in the deadzone, where one pair of the levitation electromagnets is disabled, is also verified.
在本文中，我们展示了高精度磁悬浮运输系统中实验性悬浮控制的发展。通过这种悬浮控制的实施，子系统的输入和输出可以通过实时系统进行验证。悬浮控制回路具有快速响应，并且控制算法易于实现。此外，设计了一个陷波滤波器和一个低通滤波器，分别用于最小化机械共振和传感器噪声。此外，还开发了一种分段控制算法，以减少悬浮力的突然变化。结果表明，使载体悬浮所需的总电流约为3.1A，在所需气隙处降至约2.45A。静止时气隙测量的最大峰峰值变化约为50μm，在低运动速度和高运动速度下，分别约为300μm和700μm。此外，还验证了在一对悬浮电磁铁禁用的死区内良好的悬浮控制性能。
