【作者】 扈宏杰； 于艳松；

【Author】 HU Hong-jie, YU Yan-song (Department of Automation Science and Electric Engineering, Beihang University, Beijing 100083, China)

【机构】 北京航空航天大学自动化学院自动控制系；

【摘要】 对于高精度的飞行仿真转台,影响其精度的因素很多,如三轴同时转动时的惯量耦合及负载重心与回转中心不重合等原因而造成的不平衡力矩,本文针对这两个问题进行了分析,建立了转动惯量与转角、负载偏载力矩与转角的函数关系,通过仿真计算说明,外框的转动惯量,内框的偏载力矩受耦合影响最大。在此基础上,给出了控制系统的补偿方法,为转台控制系统的设计提供了参考依据。更多还原

【Abstract】 With regard to the high precise flight simulator, the precision is influenced by many factors, such as inertia coupling when three frameworks rotating at the same time and imbalanced torque due to load dimension and not superposition between barycenter and the center of rotating. These two problems were analyzed profoundly and penetratingly, and function formulations were established which reflect the relations both between moment of inertia and angles, and partial load moment and angles. The simulation and calculation demonstrate that the outer framework’s moment of inertia and the inner framework’s partial load moment are interfered by coupling significantly. Then, compensation methods of control system were proposed which provided instructive reference about the designing of the control system.更多还原