杯式结构磁电式高频角振动台实现关键技术  

Key Technology of Cub-Structure Electromagnetic High-Frequency Angular Vibrator

作　　者：薛景锋[1] 赵维谦[1] 邵新慧[2] 

机构地区：[1]北京理工大学 [2]中航工业北京长城计量测试技术研究所

出　　处：《航空制造技术》2014年第11期64-67,共4页Aeronautical Manufacturing Technology

摘　　要：针对力矩电机驱动角振动激励源频率难以超过100Hz、波形失真大、不能满足高频角振动测试需求的现状,提出采用杯式结构磁电驱动方法。显著降低驱动线圈电感以实现驱动力快速响应,采用橡胶扭转弹簧实现轴系支撑,以克服轴承摩擦力,结合有限元分析仿真,将转子与励磁线圈骨架进行整体优化设计,使轴系固有频率提升至2400Hz。所研究角振动激励装置经实际测试,最高工作频率可达700Hz,主要工作频段内角加速度波形失真度小于3%,可广泛用于高频角振动校准或角运动传感器动态性能评价。In order to solve the problem that the frequency of angular vibration exciters driven by torque-motors is dififcult to over 100Hz and the waveform distortion is large, a method using a cup-type electromag-netic driving structure is proposed. It signiifcantly reduces the inductance of the driving coil to achieve a fast response of the driving force. A rubber torsion spring is used to achieve the shaft support and to overcome the bearing fric-tion. Combined with the ifnite element analysis and simu-lation, the resonance frequency of the shaft is increased to 2400 Hz by designing the shaft and the framework of the exciter coil as a whole. After testing, this angular vibration exciter can be seen that the upper limit frequency can be up to 700Hz, the waveform distortion of the angular ac-celeration is less than 3% in the main working frequency range. Furthermore, this driving-structure can be widely used in high-frequency angular vibration calibration or the dynamic performance evaluation of angular motion sen-sors.

关 键 词：角振动 角振动台 电磁结构 角速度 角加速度 

分 类 号：TB534.2[理学—物理]