摘要
单自由度磁悬浮系统作为磁浮导轨的基本悬浮单元,具有重要的研究价值。为了获得系统的高动态和静态性能,单自由度磁浮系统中的电流环需要具有高动态响应和高精度的特性。本文在基于双电磁铁模型基础上,研究了离散预测电流控制策略,并通过优化设计解决了在全数字控制系统中预测电流控制存在的时间延时问题。同时为了抑制电流纹波,在主电路中设计了基于三电平控制的斩波器。仿真和实验结果验证了提出算法的可行性和有效性。
As the element of the magnetic levitation（maglev） guideway, the significance of research on the single degree of freedom（DOF） maglev system is obvious. In order to obtain the high dynamic and static performance, the current loop in the single DOF system requires the characteristics of high dynamic response and high precision. In this paper, based on a model of double electromagnets, the discrete-time predictive current control strategy is proposed, and the time delay problem in the digital control system is solved by an optimal design. To suppress the current ripple, the chopper on the basis of three-level control is structured in the main circuit. Simulation and experimental results are shown to verify the feasibility and effectiveness of the proposed algorithm.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第14期25-31,共7页
Transactions of China Electrotechnical Society
基金
Supported by the National Science Foundation for Distinguished Young Scholars of China(51225702)
the National Natural Science Foundation(51177024)
关键词
磁悬浮
单自由度
预测电流控制
三电平
Magnetic levitation
single degree of freedom（DOF）
predictive current control
three-level
