摘要
在研究开关磁阻型动力磁轴承平均转矩控制策略特点基础上,提出一种瞬时转矩控制新策略。该瞬时转矩控制策略根据转子位置选择产生支承力的相统组(支承相),同时在考虑支承相对驱动转矩影响的前提下,采用另外两相绕组(补偿相)对驱动转矩进行补偿,使之准确地跟踪期望转矩,实现输出转矩的瞬时控制。瞬时转矩控制策略不仅显著减小了输出转矩的脉动程度,而且还避免了对驱动转矩和支承力之间复杂耦合关系的处理,简化了控制算法。分析了单个开关磁阻型动力磁轴承构成的控制系统的工作原理,并对其进行了计算机仿真,仿真结果验证了瞬时转矩控制策略的可行性。
The switched reluctance-tyoe power magnetic bear-
ing (SR-type PMB) is a kind of mechatronical part, which can
not only support suspensefully but also drive directly the
spindle0 After the investigation of the characteristics of aver-
age torque(AT) control strategy, a new strategy of the instan-
taneous torque(IT) control for the SR-type PMB, which re-
duces the torque ripple significantly and simplify the control
algorithms greatly, is proposed. In the IT control strategy, the
radial forces and the drive torque are produced by the coopera-
tively by several phases. A control system of the SR-type PMB,
including a support subsystem and a drive subsystem, is ana-
lyzed. And the simulations of such a control system are reported
for the verification of the feasibility and the effectiveness of the
proposed instantaneous torque control strategy.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第5期23-29,共7页
Journal of Mechanical Engineering
基金
国家自然科学基金"两个基地"基金(5991076861)
关键词
控制策略
开关磁阻型动力磁轴承
瞬时转矩控制
磁悬浮主轴
Control strategy
Switched reluctance-type power magnetic bearings
Instantaneous torque control
Magnetic suspension shaft
