Control for the Magnetically Suspended Flat Rotor Tilting by Axial Forces in a Small-Scale Control Moment Gyro
Control for the Magnetically Suspended Flat Rotor Tilting by Axial Forces in a Small-Scale Control Moment Gyro
复制标题
小尺度控制力矩陀螺中轴向力对磁悬浮扁平转子倾斜的控制
DOI:
10.1109/tie.2017.2761755
复制
发表时间:
2018-03
影响因子:
7.7
通讯作者:
Feng Jian
中科院分区:
文献类型:
--
作者:
Zhang Li;Du Jinbang;Feng Jian
Small-scale magnetically suspended control moment gyros with flat shaped rotor tilting by axial forces are easier to reduce size and weight than by radial forces. This paper presents a novel three-degree-of-freedom hybrid axial magnetic bearing without subsidiary air gaps. This new structure is more efficient because the loss on extra air gaps can be avoided. An order scheduling cross-feedback control strategy with order number adjusting with the rotor speed is also presented to compensate the gyroscopic effect. The damping ratios of nutation and precession are compared for cross-feedback controllers with different orders using generalized root locus with gain related to the speed of revolution. Simulation results show that, when increasing the order of the cross-feedback controller, the nutation stability rises, but precession drops. In experiment, high-order cross-feedback leads to high maximum stable speed, but collision at low speed. The solution is using first-order cross-feedback when the speed is below 6200 r/min, second order during 6200–9000 r/min, and third order above 9000 r/min. The digital control system implementing the presented control strategies on a field programmable gate array can keep the rotor in stable suspension from 0 to 12 000 r/min.
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影响因子:
2.7
作者:
Tang, Jiqiang;Sun, Jinji;Fang, Jiancheng;Ge, Shuzhi Sam
通讯作者:
Ge, Shuzhi Sam
DOI:
--
发表时间:
2009
期刊:
--
影响因子:
--
作者:
G. Schweitzer;E. Maslen
通讯作者:
G. Schweitzer;E. Maslen
影响因子:
7.7
作者:
T. Baumgartner;R. Burkart;J. Kolar
通讯作者:
T. Baumgartner;R. Burkart;J. Kolar
影响因子:
7.7
作者:
Jiancheng Fang;Yuan Ren;Yahong Fan
通讯作者:
Jiancheng Fang;Yuan Ren;Yahong Fan
DOI:
--
发表时间:
2012
期刊:
Electric Machines and Control
影响因子:
--
作者:
L. Kun
通讯作者:
L. Kun