步进式液压数字阀用永磁式步进电动机的非线性控制  

Nonlinear control of stepmotors step-digital valve with permanent magnet stepmotors

作　　者：郜立焕[1] 赵成[1] 赵才[2] 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050 [2]太原重型机械学院,山西太原030024

出　　处：《兰州理工大学学报》2004年第2期62-65,共4页Journal of Lanzhou University of Technology

摘　　要：根据现代非线性理论研究了三相永磁式步进电动机的非线性动力学,研究表明在高频情况下系统会经历一个动态的Hopf分叉.同时提出了解决三相永磁式步进电动机不稳定性的控制方法,设计了非线性鲁棒控制器,阐明了电动机参数不确定的情况下,如何使系统稳定并具有令人满意的性能.The nonlinear dynamics of a three-phase permanent magnet stepmotor is investigated by means of modern nonlinear theory. The investigation shows that the system experiences a dynamic Hopf bifurcation at high frequencies. The method of solving the instability of a three-phase permanent magnet stepmotor is advanced and a nonlinear robust controller is designed.

关 键 词：步进式液压数字阀 永磁式步进电动机 非线性控制 HOPF分叉 

分 类 号：TH137.52[机械工程—机械制造及自动化] TM351[电气工程—电机]