- 會議論文
Supression of Chaos in a Magnetically Levitated System
抑制磁浮系統之渾沌行為
並列摘要
This investigation verified the chaos motion of a magnetic ball levitation system with a ferromagnetic ball suspended in a voltage-controlled magnetic field, and explains a system for chaotic control. Then, the detailed dynamic behaviors are numerically investigated by means of Poincare maps, phase portraits, time responses, and frequency spectra. The results reveal that due to the realistic nonlinear characteristics of magnetic forces, period-doubling bifurcation has been observed to lead to chaos. Next, the largest Lyapunov exponent analysis is used to identify the onset of chaotic motion. Finally, a technique for effectively controlling a chaotic magnetic levitation system will be offered. It involves employing an external input, called a dither signal, to the system. Some simulation results are presented to demonstrate the feasibility of the developed approach.
延伸閱讀
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