论文部分内容阅读
为了解决传统的多体系统动力学模型因必须显式表达多体系统的拓扑构型信息,使得所建数学模型非常复杂而不太适合空间任务级实时仿真的问题,针对具有中心体结构的空间飞行器,采用拟坐标拉格朗日方程推导出简洁的多体系统姿态动力学数学模型,并利用通用仿真平台建立了可实时运行的多体系统姿态动力学仿真模型。在仿真模型上施加测试用极限环控制律,模型输出正常的姿态动力学响应。仿真结果表明,所建模型在模型粒度和运行效率间取得了平衡,满足空间任务级仿真对模型逼真度和实时性的要求。
In order to solve the traditional multi-body system dynamics model, it is necessary to explicitly express the topological configuration information of multi-body system so that the mathematical model built is very complicated and not suitable for real-time simulation of space task level. For the space with central body structure Aircraft, a simple MLM mathematical model is deduced by using the Lagrange equation in quasi-coordinates, and a multi-body system attitude dynamics simulation model that can be operated in real time is established by using a common simulation platform. Applying the test limit cycle control law to the simulation model, the model outputs the normal attitude dynamics response. The simulation results show that the proposed model balances the model granularity and operational efficiency, and meets the requirements of space task-level simulation for the fidelity and real-time performance of the model.