平流层飞艇动力推进系统的分析与设计

针对平流层飞艇螺旋桨与直流无刷(DC)电动机匹配问题,建立了直流无刷电动机模型和螺旋桨模型;结合匹配设计和直流无刷电动机转速控制,在Simulink中设计了螺旋桨与直流无刷电动机控制系统仿真模型,研究飞艇在0~10m/s巡航速度下动力推进系统控制响应问题;采用图形用户界面(GUI)编写螺旋桨与直流无刷电动机匹配界面,开发了一种螺旋桨与直流无刷电动机匹配软件;得到了飞艇在0~10m/s巡航速度下,螺旋桨工作转速为535~1 071r/min,动力推进系统工作效率为0.558~0.593时推进系统匹配设计的工作曲线,为高空螺旋桨与电动机的匹配设计提供了参考依据.

Analysis and design of stratospheric airship propulsion system

For the problem of propeller and motor matching, brushless direct current (DC) motor model and propeller model were constructed. In order to research the control response problems of propulsion system at 0 to 10m/s cruising speed of airship and the simulation model of control system of propeller and motor was designed in Simulink by combining matching design and motor speed control. The interface of propeller and motor matching was compiled in graphical user interface (GUI). Propeller and motor matching software was developed. The matching design curves for operation at 0 to 10m/s cruising speed of airship, the working range of propeller from 535 to 1071r/min and working efficiency of the propulsion system from 0.558 to 0.593, were obtained, which can be used as the reference basis for matching design between high altitude propeller and motor.