【作者】 秦岭；

【导师】 胡钛；

【作者基本信息】 中国科学院研究生院（空间科学与应用研究中心） ， 计算机应用技术， 2011， 硕士

【摘要】 遥科学是人类与位于遥远距离的实验设备之间实现交互的一种模式,在一定程度上延伸了人类的感知能力与行为能力。遥科学以其安全性高、可靠性好和成本低的特点已被广泛应用于各个领域。随着航天技术的不断发展,人类探索宇宙空间脚步的加快,遥科学模式也被应用于航天活动。远距离导致的时延问题是遥科学系统面临的关键问题,国内外的学者都提出了许多方法来减小时延对整个遥科学系统的影响,其中遥科学仿真系统发挥着重要的作用。由于遥科学系统的工作方式不同于传统的控制方式,遥科学仿真系统也具备了有别于一般的仿真系统的特殊性。在仿真系统中,时间管理是决定仿真系统正确性和可重复性的关键技术,直接影响着仿真系统的性能,因此对时间管理技术进行深入研究具有极其重要的意义。本文围绕遥科学仿真系统中时间管理的关键技术展开。首先论述了遥科学系统的概念和特点,明确了遥科学仿真系统的作用,阐述了时间管理技术的理论,然后归纳了遥科学仿真系统的仿真方式,分析了在不同的仿真方式下遥科学仿真系统的时间管理机制,并针对这些特点提出了具体的时间管理策略,包括时间回跳、连续离散混合仿真等。最后通过一个实例实现了在遥科学仿真系统中具有重要作用的时间回跳功能,进而采用“步长加密法”改进了系统对不可预测事件的仿真。更多还原

【Abstract】 Telescience is a mode that human can interact with the equipment in a far distance, which extents human’s capacity of perception and behavior. Telescience, which has high security and reliability with low cost, has been widely used in various fields. With the continuous development of space technology, telescience mode has been applied in aerospace activities.The problem of delay due to the long-distance is the key issue faced by the telescience system, and a lot of scholars at home and abroad have put forward many methods to reduce the delay in the telescience system. Telescience simulation system plays an important role in the whole system.As the operation mode of the telescience system is different from the traditional control method, telescience simulation system has its unique features compared with other simulation systems. In a simulation system, time management is the key technology which affects the accuracy, repeatability and performance of the system. Therefore, the in-depth study of the time management technology is of great significance.This paper focuses on the time management technology in telescience simulation system. First, the concept and characteristics of the telescience system are introduced and also the role of the telescience simulation system and the theory of time management technology are discussed. Then, telescience simulation system’s various operation modes are summarized, new features of time management in different operation modes are analyzed and new time management strategy is proposed, including step backwards, discrete-continuous mixed simulation and so on. Finally, an example shows the implementation of the function of step backwards and the simulation of the unpredictable events adopting the method of step refinement.更多还原