多层模糊逻辑控制器的设计

本文提出一种适合于多输入多输出(MIMO)系统的多层模糊逻辑控制器(MLFLC)，该控制器由若干个多输入单输出(MISO)模糊控制器构成，每个MISO模糊控制器由许多单输入单输出(SISO)模糊控制器组成。该控制器采用互补型隶属函数，具有一组零控制面，只要使量化因子满足一定的条件，控制系统就是渐近稳定的。最后将上述控制器用于二节机械手中进行仿真试验，验证了上述算法的可行性和有效性。     

Environmental reference systems for large-scale spaces

Human navigation in well-known environments is guided by stored memory representations of spatial information. In three experiments (N = 43) we investigated the role of different spatial reference systems when accessing information about familiar objects at different locations in the city in which the participants lived. Our results indicate that two independent reference systems underly the retrieval of spatial knowledge. Environmental characteristics, e.g., the streets at an intersection, determine which headings are easier to imagine at a given location and lead to differences in accessibility of spatial information (orientation-specific behavior). In addition, access to spatial information depends on the relative direction of a location with respect to the imagined heading, such that information about locations imagined in front of oneself is easier to access than about locations towards the back. This influence of an egocentric reference system was found for environmental knowledge as well as map-based knowledge. In light of these reference system effects, position-dependent models of spatial memory for large-scale environments are discussed. To account for the simultaneous effect of an environmental and an egocentric reference system, we present a 2-level model of spatial memory access.     

攻角试飞测试基准的误差修正

阐述了攻角测量误差的成因和攻角试飞校准的必要性。选定机头空速管攻角传感器为攻角试飞的测试基准，分析其攻角探测特性，并运用细长旋成体理论重点计算了机体绕流对攻角测量的影响量。探讨了攻角试飞测试基准的误差修正问题。     

NUM-1060 Ⅱ CNC系统自动回零程序设计

本文介绍了采用NUM-1060ⅡCNC系统，在设计制造CX600数控车铣加工中心过程中，通过E变量判断回零状态，调用Part功能子程序，完成自动回零的方法。该方法切实可行，已用于生产实际。     

Influence of the gravitational vertical on geometric visual illusions

The occurrence of geometric orientation illusions and the perception of ambiguous figures were analyzed in 24 subjects during static body tilt relative to gravity on Earth. Results showed that illusions such as the Rock's diamond/square, the Ponzo illusion, and orientation contrast illusions occurred less frequently, and that depth reversal of ambiguous figures took more time when subjects were lying on their side or supine compared to upright, thus suggesting that the gravitational reference plays a significant role in these “visual” illusions. The structure of images, our representation of the environment, and orientation relative to gravity are all integral parts in interpreting visual images. In a weightless environment where no gravitational reference can be used, it is expected that similar alterations in visual perception will occur.     

SCOR模型浅析

本文介绍了供应链运作参考模型的产生及主要构成,与其它绩效考核体系的区别,以及对于供应链管理的作用.     

商务英语模糊语语境顺应性研究

商务英语是国际商务活动的重要语言载体。模糊语在商务英语中有着不可替代的语用功能。以商务活动中的内部沟通语境和对外沟通语境为视角,对在这两种语境下商务英语模糊语的应用规律进行分析研究,应用顺应性理论对其进行解释,阐明在实际应用中应遵循这些规律,做到＂内外有别＂。对准确使用商务英语,提高商务沟通效率以及促进商务英语的教学等方面都有重要的意义。     

基于抓持稳定度的多指灵巧手抓持控制

提出了一种控制多指灵巧手稳定抓持物体的新方法。首先给出了接触稳定度和抓持稳定度的定义及其相应的计算方法,然后探讨了基于抓持稳定度的多指灵巧手抓持控制方法。最后以北京航空航天大学的BH-2新型三指灵巧手为背景,对所提出的方法进行了仿真验证,仿真结果证明所提方法是有效可行的。     

角速率平台伺服机构的智能控制与容错研究

介绍了角速率平台伺服机构智能控制研制进展。用单片机控制,对角速率反馈通道实现了2次故障判别、1次系统重构。用Fuzzy控制建立了相应隶属函数,确定了故障判别阈值。实验表明系统工作稳定,故障的Fuzzy差别合理,故障通道切换平稳,重构后系统工作仍正常。     

运动干涉检测的模糊逻辑控制

在采用最大相对速度－距离法的基础上,引入模糊逻辑控制时间裕度,使任意两次检测间的时间间隔适当增大。该方法不仅减少了检测次数,更主要的是利用模糊逻辑的鲁棒性,减少了误差对检测结果的影响,从而使它无论在效率还是在可靠性方面都有了提高。以运动平面多边形为例,通过不采用、采用、部分采用模糊逻辑控制３种方法加以比较,表明了该方法的可靠性和有效性。