固定翼无人机电磁弹射用直线感应电机设计与研究

Design and Research of Linear Induction Motor for Electromagnetic Ejection of Fixed-wing UAV

根据固定翼无人机弹射加速起飞指标要求,建立运动学模型,推导所需加速驱动用直线感应电机电磁推力输出值。以所需电磁推力值为基础,设计固定翼无人机起飞用长初级无槽单边直线电机,建立分析考虑边端效应的电机等效电路,并推导电机电磁推力输出表达式。通过等效电路计算直线感应电动机相关机械特性。采用恒电流–滑差频率控制方法控制直线电机电磁推力输出,优化设计参数及控制方式,以满足固定翼无人机加速起飞需求。

According to the requirements of the fixed-wing UAV ejecting acceleration take-off index,a kinematic model is established to derive the electromagnetic thrust output value of the linear induction motor for the required acceleration drive.Based on the required electromagnetic thrust value,a long primary slotless single-sided linear motor for fixed-wing UAV take-off is designed.The equivalent circuit of the motor with the edge effect is established,and the electromagnetic thrust output expression of the conductive machine is derived.The mechanical properties of the linear induction motor are calculated by an equivalent circuit.The constant current-slip frequency control method is used to control the electromagnetic thrust output of the linear motor,and the design parameters and control methods are optimized to meet the acceleration take-off requirements of the fixed-wing UAV.