非完整轮式移动机器人运动控制系统的设计与实现   总被引：2，自引：0，他引：2  

王仲民  刘玉山  郑勇峰  刘继岩 《天津工程师范学院学报》2005,15(2):10-12

通过对非完整轮式移动机器人运动学模型的分析，以Elmo HARmonica伺服驱动控制器为核心，设计了轮式移动机器人的运动控制系统。基于Visual C 和OpenGL平台开发了轮式移动机器人轨迹跟踪仿真系统，并进行了轨迹跟踪的仿真试验，取得了满意的控制效果。实验结果表明了运动控制系统设计的有效性。  相似文献   

The Gardener and His Plants     

David C. Helsel 《Clearing house (Menasha, Wis.)》2013,86(2):92-95

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Secondary-Task Effects on Learning With Multimedia: An Investigation Through Eye-Movement Analysis     

Cengiz Acarturk  Erol Ozcelik 《Journal of Experimental Education》2017,85(1):126-141

This study investigates secondary-task interference on eye movements through learning with multimedia. We focus on the relationship between the influence of the secondary task on the eye movements of learners, and the learning outcomes as measured by retention, matching, and transfer. Half of the participants performed a spatial tapping task while studying the instructional materials, whereas the other half studied the materials, without spatial tapping. The results revealed suboptimal learning outcomes under the secondary task, which was accompanied by fewer transitions of gaze between the text and the figure. We propose that the suboptimal learning outcomes might be due to the disrupted processing of pictures, and possibly due to the less efficient integration, of the information gathered from the text and figures.  相似文献   

Investigating gaze behavior during processing of inconsistent text-picture information: Evidence for text-picture integration     

《Learning and Instruction》2017

In two experiments, eye tracking was used to investigate whether learners construct a mental representation during learning that integrates information from text and pictures. The experimental groups received inconsistent text-picture information on one or two pages of the learning materials. The control groups received only consistent text-picture information. It was expected that learners of the experimental groups should have difficulties in integrating text-picture information when faced with the inconsistencies. This should be reflected in their gaze behavior. Experiment 1 (N = 51) and Experiment 2 (N = 45) confirmed that assumption for several eye tracking variables. Regarding learning outcomes, only in Experiment 1 worse performance of the experimental group was observed. Furthermore, Experiment 2 revealed that the majority of learners did not remember the inconsistency between text and picture when asked for it after learning. In sum, the results add to our understanding about the cognitive processes underlying multimedia learning.  相似文献   

并联有源电力滤波应用研究     

王庆飞 《安阳工学院学报》2007,(6):10-12

针对典型的三相整流电路对电网产生的影响,着重研究了易于数字化的SVPWM与无差拍算法,将其应用于并联有源电力滤波器内层跟踪控制中;并给出一种补偿功能较为完善的串并联混合型有源电力滤波器及其控制方法.  相似文献   

基于粒子群的多细胞状态估计技术     

陈庆兰  任亚运  徐本连 《常熟理工学院学报》2015,(2):63-69

针对细胞动力学特性差异、细胞变形、细胞数目变化、细胞近邻等估计难题,提出了一种基于粒子群优化方法来实现多细胞状态估计.首先,针对已存在细胞和新出现细胞设计了两种不同的搜索机制,提出了一种标准的PSO算法且无需检测模块来实现多细胞状态估计;在此基础上,引入细胞检测模块,提出一种基于改进的PSO算法来实现多细胞状态精确估计.实验结果表明,本文所提出的PSO跟踪策略能自动实现多细胞状态估计,在引入细胞检测模块后,跟踪性能提高50%以上,每帧平均耗时减小,并且在处理多细胞近邻问题时具有良好的跟踪鲁棒性.  相似文献   

排球视频中的运动目标跟踪及检测算法研究     

修艳 《科技通报》2015,(7)

为了提升排球视频中的对于目标的追踪能力的准确性,本文利用Mean shift算法,提出了一种高效率并且又稳定的运动目标跟踪检测算法。算法根据排球在x、y轴上的坐标位置和排球在在x、y上的速度,进行观测向量的设置,并求解观测值。实验过程中采用五台摄像机对排球运动场进行全方位的目标跟踪,最终求解得到排球在三维空间的运动轨迹。实践证明,本文算法图像处理信噪比高,时间复杂度低。  相似文献   

嵌入式平台中Shift目标跟踪算法的收敛局限性优化     

刘靓  刘悦 《科技通报》2015,(1)

嵌入式平台目标跟踪在应用的过程中Mean-Shift算法具有一定的收敛局限性,因此提出了一种基于改进Mean-Shift的嵌入式系统目标跟踪算法,首先对标准Mean-Shift算法的采样模式进行了改进,然后标记已采样的点来加快运算速度,最后对原算法的收敛局限性进行了优化。通过对算法进行仿真,得到结果是:改进的Mean-Shift的嵌入式系统目标跟踪算法相比于之前的算法具有更好的应用性能,其精确性也相对较高。  相似文献   

关爱教育在高校毕业生就业质量报告编制中的作用研究     

孙灿 《湖北成人教育学院学报》2015,(1):28-29,87

高校毕业生职业发展状况和人才培养质量调查是高校办学绩效评价的重要依据,也是各高校编制毕业生就业质量报告的基础数据,但由于其对象的特殊性,在宣传、发起、组织、反馈等环节都有许多不可控的因素,毕业生的参与度、结果的真实性和有效性都会影响报告编制质量。关爱教育可以增强高校毕业生对班主任和母校的认同度,积极真实客观地参与跟踪调查,使调查结果更具可信度和说服力,进而提高了高校毕业生就业质量报告编制的质量。  相似文献   

Geoway在地形图生产中的应用     

徐健梅 《长江工程职业技术学院学报》2010,27(4):21-23

论述了Geoway数据加工平台的应用,简单介绍了Geoway数据加工平台矢量化地形图的基本流程。  相似文献