查询词典 drift

So, the study in this dissertation focuses on some key points in theuncertainty treatment of mobile robot localization as follows: Combined with the multiple proprioceptive and exteroceptive sensors ofmobile robot MORCS-1, aimed at the drift error of fiber optic gyro as theproprioceptive sensor, the neural network using genetic algorithm as optimaltool is proposed to accomplish the modeling and calibration for temperaturedrift of fiber optic gyro, which can reduce the drift error to the standard outputat constant temperature; and aimed at the noisy disturbance of ranging datafrom the exteroceptive sensor laser scanner, a dynamic adaptive filter isintroduced through the analysis of neighboring ranging data in time and spatialcorrelation to realize the real-time and dynamic filter, which can validly filter the noisy disturbance to meet the requirement of the accurately real-timeobstacle detection in mobile robot navigation.

总结全文，在移动机器人定位的不确定性处理研究中，提出了一些具有一定创新性的方法：结合自行研制的移动机器人MORCS-1系统的多种内外部定位传感器，针对内部本体感受传感器光纤陀螺仪的漂移误差，提出采用基于遗传算法优化的神经网络来对光纤陀螺仪的温漂建模及校准，能够将其温漂变化控制在恒温条件下标准测试输出附近；针对外部环境感知传感器激光雷达测距数据中包含的噪声干扰，考虑移动机器人导航中激光雷达测距数据的时空关联性，提出采用动态自适应滤波技术进行预处理，从而可以有效滤除噪声干扰满足导航中障碍实时精确检测的要求。

It introduces mathematic demonstration about the reason of heterogenic image motion vector,analyzes the necessity of drift mechanism and puts forward a compensation method by using scan mirror,drift mechanism and exposure slit.

对产生异速像移实质给出了数学推导，对偏流机构存在的必要性进行了分析，提出了一种利用两轴旋转扫描镜，同时结合旋转偏流机构和曝光帘缝的像移补偿方案。

S Broad asphalt along the main road, followed by the array of more than 30 of its significant interest in large, medium and small Recreation: If the crazy "roller coaster" in the air on the track and came to a series of somersaults, and let you experience a soul-stirring centrifugal, rapid rotation of panic, can be done to stimulate;"fast scooters" in the track km On the fast, as Shirupozhu dive 30 meters high slope, Huer mad to Jixuan, feelings like Cloud Nine fall, as if riding a bull at running back; in particular, the addition of new large-scale projects,"Challenger Tour" Mars will give you the speed of excitement around the world,"wind speed," you over 10 meters in height, during which around and up and down several times before and after the turnover, there is a non-feet under the ultimate experience weightlessness; and the "monster House "is another boost fan, pitch dark, cold wind gusts, desperate calls and setting of zombie ghosts and volatile side of the creeps you scared, scared; 50 meters out to the" Ferris wheel "to let you enjoy the" List Small hills,"the sense of endless;" Liu Yong Jin,"When you enjoy the" drift "Huiguoshenlai no sense, as water spilled from the mountain 10 meters high fly drift down the moment, the heart Has been hanging in the air to the; also hit eyeful of Venus "bumper car"; as the mischievous people Shuaixiang half-empty,"Spider-Star,""rotating aircraft" and "forest mouse car," and so on, you will be able to bring a Although the stimulus was accompanied by tears, but more interest is the doubling of the situation, a test of your willpower.

沿着宽阔的柏油大马路，依次排列着三十多个各显其趣的大、中、小型游乐项目：如疯狂&过山车&在凌空的轨道上急转直下而又接连翻腾，让你经历一场惊心动魄的离心、快速旋转的恐慌，可谓极尽刺激；&快速滑行车&在千米的轨道上风驰电掣，势如破竹般俯冲三十米高坡，忽儿狂转急旋，那感觉仿如九霄云外下坠，又好象骑在蛮牛背上狂奔；特别是新增设的大型项目&挑战者之旅&将带给您火星绕地球的速度快感，&极速风车&，你凌驾十米高空中，其间几度上下左右和前后翻转，真有一种双脚无着下的终极失重体验；而&妖怪屋&又是另番刺激，伸手不见五指，寒风阵阵，绝望的叫声和出没无常的僵尸鬼面，吓得你毛骨悚然，胆战心惊；拔地五十米的&摩天轮&让你享受&一览众山小&的无垠感觉；&激流勇进&，当你优悠的&漂&感还没回过神来的时候，高山泻流水般从十米高处向下飞漂的那一刻，心已悬到半空中了；还有撞到满眼金星的&碰碰车&；恶作剧般把人甩向半空的&星际蜘蛛&、&旋转飞机&和&森林老鼠车&等，都能将你带到一个虽然伴有被刺激后的泪花，但更多的是兴致倍增的境地，考验了你的意志力。

The story drift can be represented by the drift of a typical beam/column sub-assemblage. Introducing the plastic deformation distribution factor x as a parameter, the relations among x, displacement ductility ratio μ〓 and column overstrength factorη〓, i. e. the x－μ〓－η〓 equations are presented.

提出用框架节的侧移要求来等效框架的层间位移要求，引入塑性变形分布因子x的概念，建立了x与位移延性系数μ〓、强柱系数η〓之间的关系，即x-μ〓-η〓关系。

The static time and temperature's drift of the quartzose flexible accelerometer in SINS was studied through theory and experiments,and a LM algorithm's BP network was developed to compensate the drift.

针对捷联惯导系统中石英挠性线加速度计输出偏值在快速启动和不同温度条件下漂移较大的问题，从理论和大量试验上研究了其静态时、温漂特性，提出了采用LM算法的BP神经网络进行二维补偿的方法。

It is demonstrated that the frequency drift will break up the phase-locked state of the laser array and induce the spatial instability of the far-field intensity due to phase noise. It is also found that although the evanescent coupling between elementary lasers can restrain these effects to some extent, the restrainability is too limited to be effective when the frequency drift is relatively strong.

通过对耦合激光器阵列动力学方程的数值研究发现，频率漂移将破坏激光器阵列的锁相状态，并引入相位噪声，导致输出远场光强分布不稳定；研究还发现：倏逝波耦合能够对频率漂移的影响起到一定的抑制作用，但这种抑制只在频率漂移较弱时才有效，因此，如果将该阵列用于光束合成，加入相应的抗干扰措施还是很必要的。

Lastly, in accordance with the actual situations of the prototype structure of mosque pagoda, based on the similar relation of model experiments, a model structure of mosque pagoda with a similar coefficient of 1/10 is designed and fabricated. Earthquake simulating shaking table tests are performed on the model structure of pagoda in the cases the AB type passive control system with SMA dampers is erected or unerected. The leading earthquake responses like the relative drift at the top of the main tower and the small tower, interstory drift ratio, acceleration, and cracking process of the pagodas body etc. are studied. The operational behaviors involving the deformation capacity and energy dissipation capacity is tested for passive control system with SMA dampers under the earthquake excitation, and the corresponding control mechanism and regularity is also analyzed. Furthermore, the performance changes and protection effectiveness is comprehensively evaluated while the model structure of pagoda is seismically protected or not.

最后，根据光塔原型结构的实际情况，以模型试验的相似关系为基础，设计并制作了一个相似系数S，为1/10的光塔模型结构，并先后进行了未安装和安装A、B型SMA阻尼器被动控制系统光塔模型结构的地震模拟振动台试验，研究了模型结构在3种不同工况下，主塔顶部和小塔顶部的相对位移、层间位移角和加速度以及塔体开裂等光塔结构的主要地震反应，测试了SMA阻尼器被动控制系统在地震激励下的变形能力和消能能力等工作性能，分析了相应的控制机理和控制规律，并从总体上评价了光塔模型结构抗震保护前后的性能变化和保护效果。

Based on the measurements on four types of nozzles, the extent and trend of effects of several variables on drift potential was analyzed and the spatial distribution states of the drift droplets atomized by these four types of nozzles were described in this paper.

该文通过对不同类型喷头的测试，分析了不同因素对飘移性的影响程度和趋势，并对飘移雾滴在空间的分布状态进行了研究。

Drift Boat Fly Fishing: A River Guide's Sage Advice Anyone who has fly-fished from a drift boat knows the potential for a great day while floating downstream--and if the hoppers...

漂流钓鱼船飞：河引导的智者忠告任何人飞捕捞船从漂流的潜力很大知天而浮动下游--如果漏斗

Drift Boat Fly Fishing: A River Guide's Sage Advice Anyone who has fly-fished from a drift boat knows the potential for a great day while floating downstream–and if the hoppers are happening, it can be downright euphorious.

漂流钓鱼船飞：河引导的智者忠告任何人飞捕捞船从漂流的潜力很大知天而下游浮-如果发生料仓、euphorious可以彻头彻尾。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。