摘要
利用电磁学、电子学和控制理论对磁悬浮地球仪的工作原理进行了分析,建立了系统的线性化数学模型,在Matlab 7.0中建立了Simulink仿真模型,对电路参数进行了分析。设计了基于模拟PID控制的电路,该电路结构简单,易于调整。系统采用电磁永磁混合支撑,用永磁铁产生的磁场代替电磁场提供静态偏置磁场,可减小偏置电流,从而降低系统功耗,使一个直径100 cm、质量25 kg、悬浮间隙40 mm的地球仪稳定悬浮。
On the basis of electromagnetics, electronics and controlling theories, the principle of magnetic suspension globe was an- alyzed. The mathematical model was constructed, and the simulation model was established in Matlab 7.0. The circuit parameters of the system were analyzed. A circuit based on analog PID control was designed. The circuit was simple in structure and easy to adjust. The system used a hybrid permanent technology. Permanent magnet was used in place of electromagnetic to provide a static bias magnetic field. It could reduce the bias current, and consequently can reduce system power consumption. A globe with 100cm in diameter,5 kg in mass,was stably suspended with a 40ram suspension interval.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2010年第1期35-38,共4页
Journal of Wuhan University of Technology：Information & Management Engineering
