排序方式： 共有8条查询结果，搜索用时 15 毫秒
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The space sheet for a solar array structure is large in dimension, and flexible to induce complex distortion. It is difficult to measure the distortion. A large-scale flexible test prototype system is built for sheet structure vibration monitoring based on the vibration information of the solar array in space. The system provides an intelligent test method for flexible space structure with embedded sensors and non-visualization reinstruction. Multiple fiber Bragg grating （FBG） sensors are packaged and embedded into the structure with spatial division multiplexing （SDM） and wavelength division multiplexing （WDM）. The sensor interrogator distinguishes wavelength shifts that can be turned into curvature of the curve. The structure shape is reconstructed based on the curvature information and the arc-length, and then displayed. The experiment shows that the system has a high FBG sensitivity. The reconstruction algorithm is fast with high precision. The system has great potential for use in health monitoring of the space sheet structure. 相似文献
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lintroductionAtpresent,thefirst-stepsurfaceadhesionofmostwallclimbingrobotsdependsonsomeoutsideforce,whichisprovidedeitherbyhumanoperatorsorbysuchaspecialpurposemechanicaldeviceasamanipulator.ThisnotonlyrestrictsInanyspecialapplicationsofwall-climbingrobo… 相似文献
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毕业设计是工程类本科教学的最后一环.由于其综合性、实践性、继承性等特点,作为工科教育的关键环节之一而受到重视.本文介绍作者所在的研究团队如何将研究生论文和科研工作合作指导模式移植运用到本科毕业设计和毕业研究课题中的基本思路和具体做法.分析了研究型毕业设计指导模式的内涵,阐述了从课题的确定、开题报告、定期的seminar、中期报告、毕业论文(设计)答辩、发表论文等多方面的实践感受和取得的主要成果.也在一定程度上分析了通过这种模式培养的学生毕业后的跟踪情况,其中有多名同学考取硕士研究生,毕业工作的同学形成了踏实工作积极向上的主流倾向.结果表明,通过这种模式对学生学业价值现的形成、各方面能力的提高以及对以后的事业生涯具有非常积极的作用和影响.本文还分析了这种模式可持续发展的制约因素,提出了不同层面需要解决的问题和需要努力的方向. 相似文献
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This paper discusses and compares some common architectures used in autonomous mobile robotics. Then it describes a behavior-based autonomous mobile robot that was implemented successfully in the Robotics Lab of the Department of Precision Mechanical Engineering. Fuzzy controller was used to implement the emergency behavior, the behaviors arbitration was implemented using the sub-sumption architecture. In an unknown dynamic indoor environment, the robot achieved real-time obstacle avoidance properties that are cruel for mobile robotics. 相似文献
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This paper is concerned with a control method for an exoskeleton ankle with electromyography (EMG) signals. The EMG signals
of human ankle and the exoskeleton ankle are introduced. Then a control method is proposed to control the exoskeleton ankle
using the EMG signals. The feed-forward neural network model applied here is composed of four layers and uses the back-propagation
training algorithm. The output signals from neural network are processed by the wavelet transform. Finally the control orders
generated from the output signals are passed to the motor controller and drive the exoskeleton to move. Through experiments,
the equality of neural network prediction of ankle movement is evaluated by giving the correlation coefficient. It is shown
from the experimental results that the proposed method can accurately control the movement of ankle joint.
Project supported by the National High-Tech R&D Program (Grant No.2006AA04Z224), the Innovation Program of Shanghai Municipal
Education Commission (Grant No.08ZZ48), and the Shanghai Leading Academic Discipline Project (Grant No.Y0102) 相似文献
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钱晋武 章亚男 孙麟治 秦新捷 沈耀宗 QIAN Jin-wu ZHANG Ya-nan SUN Lin-zhi QIN Xin-jie SHEN Yao-zong 《上海大学学报(英文版)》2000,4(3):235-238
The micro robot based on screw motion wheels, which features high payload/mass ratio, fast and continuous motion, adaptation
to pipe diameter or roundness variations, is suitable for locomotion and inspection inside small-diameter pipelines. The robot
inspection system, Tubot I, developed at Shanghai University is composed of locomotion mechanism with an inner motor, a micro
CCD camera and a monitor outside the pipeline. In the paper, the kinematics and statics analyses are presented for the screw
locomotion system of Tubot I. The moving characteristics are obtained from experiments on the robot prototype.
Supported by National High-Tech R & D Program in China(863-512-9704-26,863-512-9804-18) 相似文献
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This paper describes a novel design for the carrier mechanism of a pipe-inspection micro robot. Based on this mechanism, a new
micro robot for the pipes with diameter of 20mm has been developed. It can travel through both vertical pipes and curved pipes to make
possible inspection that would be difficult with conventional endoscopes. This mechanism is composed of three units, two novel micro
mechanisms called as a planetary wheel mechanism for robot drive, two micro electromagnetic motors and a flexible coupler. 相似文献
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