摘要
针对磁悬浮轴承-转子大型化、重载化为控制系统设计带来的控制对象数学模型不易精确建立、控制参数较难调节等问题,以磁悬浮卧螺离心机中重载转子为研究对象,采用自适应控制方法进行控制性能研究.设计支撑卧螺离心机的磁悬浮轴承-转子系统,转子长度约为3.4 m,质量约为1090 kg.通过仿真和试验验证了自适应方法可实时调节的控制性能,使得磁悬浮轴承支撑的重载转子稳定旋转至约4740 r/min,转速较传统滚动支撑提高了50%以上,可以有效提高离心机的分离效率,通过ISO14839验证了稳定裕度及振动水平位均在B级安全以内.
The adaptive control method was adopted to analyze the control performance of the heavy load rotor in the magnetic levitation horizontal spiral centrifuge in order to deal with the problems caused by the large size and heavy load of the magnetic bearing and rotor in the control system design,such as the difficulty in accurately establishing the mathematical model of the control object and the difficulty in adjusting the control parameters.A magnetic bearing-rotor system was designed to support the horizontal spiral centrifuge with the rotor length of about 3.4 m and a mass of about 1090 kg.The simulation analysis and experimental research were conducted by using the adaptive control method to verify the real-time adjustable control performance of the adaptive control method.The heavy load rotor supported by magnetic bearing rotated stably to about 4740 r/min,and the rotational speed was increased by more than 50%compared with the traditional rolling support,which can effectively improve the separation efficiency of centrifuge.The stability margin and vibration level of the magnetic bearings and rotor system were proved to be within B level by ISO14839.
作者
关旭东
周瑾
金超武
徐园平
GUAN Xu-dong;ZHOU Jin;JIN Chao-wu;XU Yuan-ping(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2020年第4期662-670,共9页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(51675261)
江苏省重点研发计划资助项目(BE2016180)
南京航空航天大学基本科研业务费专项科研资助项目(NZ2018460).
