By means of experiment the distribution of the non-uniformed magnetization of the magnetic ring of permanent magnetic bearing was measured, and the influence of magnet clearance on non-uniformed magnetization was analyzed. 摘要通过试验测量了永磁轴承磁环不均匀磁化的分布,分析了磁体间隙对不均匀磁化的影响。
The former combines radial magnetic bearing with a motor magnetically to realize driving torque as well as two radial degree magnetic suspension, and the latter utilizes electromagnets together with a homopolar, permanent magnet bias topology to support the shaft in two radial degrees and one axial degree. 其中无轴承电机将悬浮绕组与转矩绕组叠绕在一起,同时实现转矩驱动和转子两自由度径向悬浮;三自由度磁轴承利用单极永磁偏置磁场实现转子轴向悬浮以及两自由度径向悬浮。
Ultra-precision Machining of the Gas-dynamic Spherical Bearing Permanent magnet actuators for vacuum circuit breakers 动压球形轴承的超精加工真空断路器的永磁操动机构
A novel magnetic bearing system with five degrees of freedom is designed including a permanent magnet biased axial-radial magnetic bearing, a permanent magnet biased radial-magnetic bearing and high speed permanent magnet synchronous motor. 提出一种五自由度悬浮磁轴承电机系统(由永磁偏置轴向径向磁轴承、永磁偏置径向磁轴承、高速永磁同步电机共同构成)。
Thermoanalysis of Thrust Magnetic Bearing with Solid Magnet 实心磁铁推力磁轴承热分析
Mechanical characteristics of permanent magnet bearings is expressed by bearing capacity and bearing stiffness. Analysis of mechanical characteristics of permanent magnet bearings plays a significant role in analysis and design of permanent magnet bearings. 永磁轴承的力学特性反映了承载力和轴承刚度的大小,掌握永磁轴承的力学特性对于合理分析和设计永磁轴承有着非常重要的实际价值。
It is seen from the example of permanent magnetic bearing that, the finite element method of the magnetic-charge model is very simple and effective in calculating the magnetic field emanated from the permanent magnet. 从永磁磁力轴承磁场的算例中可以看出,用等效磁荷模型的有限元法计算永磁体空间磁场是非常简便和有效的。
The results indicate that there must be optimal operating point of thrust magnetic bearing with massive magnet. The main effecting factors of carrying capacity temperature rise characteristic involve static gap and/ or ampere turns. 结果表明:实心磁铁推力磁轴承存在最佳工作点,影响轴承承载力温升特性的主要因素是静态气隙和绕组安匝数,且对静态气隙更敏感。
The thermo equilibrium conditions of thrust magnetic bearing with solid magnet are analyzed and the improved quantitative calculation rules are brought forward. 对实心磁铁推力磁轴承热平衡条件进行了分析,提出了改进的轴承温度场估算方法。
A carrying capacity temperature rise analysis model of thrust magnetic bearing with massive magnet is founded. 本文建立了实心磁铁推力磁轴承承载力温升分析模型。
Study on Three-level PWM Switching Power Amplifier for Active Magnetic Bearing biased with Permanent Magnet 永磁偏置磁轴承三电平PWM开关功放的研究
A new hybrid-type permanent magnet biased magnetic bearing with rotor magnet 一种新型转子磁体永磁偏置混合磁轴承
Magnetic-force pump sliding bearing and permanent equilibrium magnet ring 磁力泵导轴承及平衡用永磁环的研究
This paper makes the permanent magnet biased magnetic bearing for research object, and mainly does the following work: The configuration and working principles of permanent magnet biased radial-axial magnetic bearing are introduced. 本文以永磁偏置磁悬浮轴承为研究对象,主要做了以下几个方面的工作:首先介绍永磁偏置轴向径向磁轴承的结构特点及工作原理,给出了永磁偏置轴向径向磁轴承的数学模型。
In order to give full play to the efficacy of permanent magnetic material, the effects of the magnetic loop height, cross-sectional size and volume on the bearing stiffness were studied, and the cross-section shapes of permanent magnet bearings were designed. 2. 为了充分发挥永磁材料的功效,研究了永磁环截面尺寸及体积对轴承刚度的影响,设计了永磁轴承的截面形状。
Because the biasing current in the active magnetic bearing is substituted for a magnet in the permanent magnet biased magnetic bearing to produce magnetic bias, the power consumption of the permanent magnet biased magnetic bearing is decreased. 永磁偏置磁悬浮轴承采用永磁体产生的偏置磁场替代主动式磁悬浮轴承中的偏置电流,从而减小了磁悬浮轴承的功率消耗。
The primary contents and original contributions of this thesis are as follows: ( 1) In view of the problems of magnetic bearing, a hybrid active magnetic bearing system is proposed by a permanent magnet generate static bias magnetic field and electromagnets provide the control magnetic field. 针对目前电磁轴承中存在的问题,提出了利用永久磁铁提供偏置磁场、电磁铁提供控制磁场的混合式主动磁悬浮轴承系统。