制动器用电磁体的另一种非对称磁路设计

Another Design of Unsymmetrical Magnetic Circuit of Electromagnet Used in Brake

为了获得更好地制动安全性及延长制动器寿命,针对相关文献中制动器用电磁体磁路的非对称设计方案的不足之处,提出了新的磁路形状设计,即采用开槽的方法来获得要求的非对称磁路,并对此作了理论分析。由于磁路形状复杂,采用Ansoft软件中Maxwell-3D对设计的电磁体进行磁场及其吸力的仿真计算。对仿真结果和理论分析作了对比。以此制作的样品试验结果表明,电磁体工作姿态平稳,未发现因卡死而出现摩擦力的大幅度波动。且磨损均匀,满足了工作寿命的相关要求,为电磁制动器安全制动、延长工作寿命提供了保证。

In order to obtain the better braking security and prolong the life of the brake, and in allusion to the deficiency of the unsymmetrical design referred in relevant literature, a new design of magnetic circuit shape is proposed, namely using the slotting method to obtain the unsymmetrical magnetic circuit required, and its theoretical analysis is done. Because the magnetic circuit shape is rather complicated, the magnetic field and its suction of the designed electromagnet are simulated by the software Maxwell-3D from Ansoft Corp. The theoretical analysis and the simulative computation are ccrnpared. The testing result of the unsymmetrical designed sampies shows that the electromagnet ,working posture is steady, and the large undulation of the friction force has not appeared when deactivation. The attrition is even to satisfy the requirement of its workinng life, which provides the electrcmagnetic brake with better security and longer working life.