摘要
为了同时实现磁悬浮磨床电主轴系统高刚度和高转速这两个主要性能指标 ,通过理论分析、计算机仿真和实验 ,研究了功率放大器环节的电流响应速度、电磁铁的力响应速度对磁轴承系统性能的影响。结果表明 ,功放的电流响应速度、电磁铁的力响应速度直接影响系统的闭环控制性能。通过提高功放的电流响应速度、电磁铁的力响应速度 ,实现了磁轴承系统在刚度为 39.3N /μm ,转速为 46 .32 0 kr/min情况下的稳定运转。
High stiffness and high speed are both important proporties in active magnetic bearings (AMBs) grinding electrospindle system. Theoretical analysis, computer simulations and experiments were used to analyze the effect of the power amplifier current response rate and the electromagnetic force response rate on the performance of the magnetic bearing system. The results show that both response rates directly affect the performance of the closed loop system. A stable rotation speed of 46.320kr/min and a stiffness of 39.3N/μm were obtained with increased power amplifier current response and electromagnetic force response rates.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第6期23-26,共4页
Journal of Tsinghua University(Science and Technology)
关键词
磁悬浮轴承
功率放大器
电流响应速度
力响应速度
active magnetic bearings (AMBs)
power amplifiers
current response rate
force response rate
