永磁电动式磁悬浮装置的研究

摘要

As an electro-magnetic levitation device, permanent-magnet electro-dynamic maglev system (EMS) has many advantages. Relative to EMS, it is not necessary for the magnetic levitation to possess a complex closed-loop control and have a wide air-gap. The electromagnetic part of a permanent magnet electro-dynamic system analytical equation was established and the solution was given. The results of the distribution of magnetic field, solid loss and the electromagnetic levitation force were shown. Comparisons of simulation solution, analytical solution and measurement reveal that two methods are consistent, and the analytical model is effective and efficient.%针对目前电磁式磁悬浮系统悬浮气隙小且需要复杂的闭环控制等问题,永磁电动式磁悬浮系统具有悬浮气隙大和本征稳定的特性不需要复杂的闭环控制即可实现稳定的悬浮等优点.从电磁场的角度出发,建立永磁电动式磁悬浮系统的数学模型,研究其动态特性,得到悬浮力和制动力的解析表达式；建立Ansoft有限元模型,分析得出了系统的磁场分布,电磁力等的分析结果；搭建实验平台对永磁电动式系统的基本特性进行研究,主要是悬浮力和制动力的测试；比较解析解、数值解和试验结果,表明本文建立的数学模型是合理的、有效的.