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为了提高变体后缘的驱动效率,提出了一种可放大驱动力的索网传动机构。采用梁模型推导了单节点索网/基板弯曲变形的非线性微分方程,给出了基于有限差分法的迭代格式。数值模拟结果表明:索网机构比单索机构具有更高的驱动效率,降低了驱动器的最大驱动力;降低了基板的最大弯矩,且使最大弯矩点后移。最后,设计了单索和索网机构驱动钢板弯曲变形的实验装置,给出了钢板自由端垂直位移和外载关系的实验结果,结果表明当钢板等效偏转角的设计值为10°时,索网机构的最大驱动力比单索机构降低了41%。
In order to improve the driving efficiency of the trailing edge of the variant, a cable mesh transmission mechanism capable of amplifying the driving force is proposed. The nonlinear differential equation of single node cable / substrate bending deformation was deduced by using beam model, and the iterative scheme based on finite difference method was given. Numerical simulation results show that the cable mesh mechanism has higher driving efficiency than the single cable mechanism, reducing the maximum driving force of the actuator; reducing the maximum bending moment of the substrate and moving the maximum bending moment backward. Finally, the experimental apparatus for bending and deforming steel plate driven by single cable and cable net is designed. The experimental results of the relationship between vertical displacement and external load of free steel plate are given. The results show that when the equivalent deflection angle of steel plate is designed as 10 °, Cable network agencies the biggest driving force than single-cable agencies to reduce the 41%.