飞行汽车机翼折叠系统机构运动学分析

Kinematic Analysis of Flying Car Wing Folding System Mechanism

为延长飞行汽车的飞行时间及实现飞行汽车可以在空中飞行模式与陆地行驶模式下正常工作,在根据升力公式对飞行汽车机翼进行设计选型后,对机翼折叠、回收机构进行设计并基于复数矢量法建立机翼折叠、回收机构运动学模型,使用MATLAB分析计算了机构关键杆件的角位移、角速度、角加速度变化情况,并用Adams对机构进行运动仿真分析。分析结果表明:机翼折叠机构与回收机构的角位移、角速度、角加速度图像均未出现激增或骤降,机构结构设计合理,可实现平滑稳定运动,运动特性良好。其中,通过控制折叠机构驱动杆件由83.25°偏转至116.75°实现折叠外翼90°的偏转。通过控制回收机构驱动滑块位移516.6 mm实现机翼90°的展开。最终在30 s内完成机翼折叠及回收作业。

In order to extend the flight time of flying cars and enable them to function seamlessly in both airborne and land-based modes,designing and selecting wings was focused on for flying cars based on the lift formula.Subsequently,folding and retrieval mechanisms for the wings were designed,and a kinematic model of the wing folding and retrieval mechanisms was established using the complex vector method.MATLAB was used to analyze and calculate the angular displacement,angular velocity,and angular acceleration of critical components within the mechanism,while Adams was utilized for motion simulation analysis.The results indicate that the angular displacement,angular velocity,and angular acceleration of the wing folding and retrieval mechanisms do not exhibit sudden spikes or abrupt drops,indicating a well-structured and smooth movement,with excellent motion characteristics.Specifically,by controlling the folding mechanism's driving rod to deflect from 83.25°to 116.75°,a folding angle deviation of 90°for the outer wing is achieved.Similarly,by controlling the retrieval mechanism's driving slider displacement of 516.6 mm,a wing deployment angle of 90°is attained.Ultimately,the wing folding and retrieval operations are successfully completed within 30 seconds.