论文部分内容阅读
为模拟飞行器多自由度(DOF)风洞试验,设计并制造了一种用于低速风洞试验的高速并联六自由度机构,综合分析需求和机构的约束条件,确定机构的结构参数,并分析和总结了该机构的特点。使用ANSYS软件计算系统的固有频率,得到系统极限位置的振动响应。利用ADAMS软件对机构进行柔性动力学仿真,模拟机构在高速运动时紧急制动的动力特征,比较分析刚性和柔性制动的冲击载荷,总结出机构高速制动的特点,所分析结果在机构的设计和实际应用中具有重要的意义。实际运行表明:并联机构可实现单自由度和多自由度耦合运动,具有大工作空间(振幅可达30°/500mm)、高运动精度(达0.05°/0.5mm)和高速(达5m/s)等特点,并具有较高的运动性能,满足风洞试验要求。
In order to simulate multi-degree of freedom (DOF) wind tunnel experiments, a high-speed six-DOF parallel mechanism was designed and manufactured for low-speed wind tunnel tests. The structural parameters of the mechanism were determined and analyzed according to the requirements and mechanism constraints. And summarizes the characteristics of the agency. Using ANSYS software to calculate the natural frequency of the system, get the vibration response of the system at the limit position. Using ADAMS software to simulate the dynamic behavior of the mechanism during the high-speed movement, the dynamic characteristics of the mechanism during the high-speed movement are simulated. The impact loads of the rigid and flexible brakes are compared, and the characteristics of high-speed braking are summarized. Design and practical application of great significance. The actual operation shows that the parallel mechanism can realize single degree of freedom and multi-degrees of freedom coupling motion with large working space (amplitude up to 30 ° / 500mm), high motion accuracy (up to 0.05 ° / 0.5mm) and high speed (up to 5m / s ) And other characteristics, and has high performance, to meet the wind tunnel test requirements.