关键词: 三自由度运动平台, 飞行模拟器, 结构设计, 运动学特性

Abstract: Flight simulator has the incomparable advantages over real flight training which its structural design is the crucial to the optimization of aircraft design and improvement of the flight performance, so modeling and simulation of the research on the aircraft design is the key point for aircraft’s design. After compared with 6-DOF（Degree of Freedom） flight simulator driven by hydraulic cylinders, a kind of 3-DOF flight motion platform based on 3-RPS mechanism driven by electric cylinders under UG environment is established , and the simulation of kinematical characteristics is researched after building joints and motions for the virtual prototype under the ADAMS/View module. For given kinematics characteristic curves, the post-processing of the measurement results using ADAMS/Post Processor module is carried, to get kinematics curves of various flight attitudes. The simulation results show that the designed structure can achieve three directions of motion, such as lift, roll or pitch, and meet the requirements of the technical specifications of the civil aviation flight simulator. The processes of analysis provide effective research methods for the design of the flight simulator.

Key words: 3-DOF motion platform, flight simulator, structural design, characteristics of kinematics