无人机全电刹车系统的建模与仿真研究

无人机全电刹车系统在减小失火危险,减轻飞机重量,降低维护要求以及显著改善刹车力矩控制和防滑性能方面都有着传统液压刹车系统无法比拟的优点.文章研究了全电刹车系统的具体工作原理及整体结构,建立了系统各个组成部分的数学模型,特别针对电刹车系统所特有的部件和结构:电作动机构和刹车力矩反馈控制作了深入的研究,确定了电作动机构的具体结构,并在此基础上建立了系统整体的数学模型.并利用SIMULINK工具进行了仿真分析,给出了干跑道情况下的仿真结果,与实际情况基本吻合,结果表明全电刹车系统无论是在刹车性能还是在刹车效率上都明显优于传统的液压刹车系统.

Modeling and Simulation of Electric Brake System of UAV(Unmanned Vehicles)

The electric brake system of UAV(Unmanned Vehicles)offers a variety of potential advantages over the conventional hydraulic brake in many respects,such as eliminating brake fire,reducing the weight of aircraft,lowering maintenance cost and improving the control effect of brake torque.This paper investigates the operational principle and the structure of the electric brake,establishs models for all components,investigates deeply the electric actuator and brake torque feedback,determines the concrete structure of it and finishs the calculation of the design.It is simulated with the tool of SIMULINK and the result of dry runway simulation is also presented.The result of simulation is similar to real states and indicates that the performance and efficiency of the electric brake are better than that ofthe conventional hydraulic brake.