ICMIT: Mechatronics and Information Technology最新文献_第7页

Research on data receiving and delivering in networks with long delays 长时延网络中数据接收与发送的研究

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784103

Lei Liu, Hong Jiang

{"title":"Research on data receiving and delivering in networks with long delays","authors":"Lei Liu, Hong Jiang","doi":"10.1117/12.784103","DOIUrl":"https://doi.org/10.1117/12.784103","url":null,"abstract":"An ad-hoc network is formed by a group of mobile hosts upon a wireless network interface. In the sparse mobile ad-hoc networks (SMANET), continuous end-to-end path between source and destination nodes, precedent condition of the traditional communication technology, may never exist. The disconnected or discontinuously connected networks and high link error rates pose a new set of challenges. The usual way to deal with this problem is to let the mobile computer wait for network reconnection passively, which may lead to unacceptable transmission delays. Although long range communication can be used to establish the link between nodes, it leads to rapid draining of nodes' limited batteries. In this paper, a kind of improved message relaying approach is proposed. Besides the function of route discovering, this approach is designed to realize data receiving and delivering (DRD) in networks with long delays. The data are stored and forwarded by the node chosen in the \"node-choosing\" procedure. With the help of the nodes' mobility, data can be relayed hop by hop from the source node (SN) to the destination node (DN). Consequently, the source node and the destination node can communicate to each other indirectly. It is believed that this scheme is useful for applications that require urgent message delivery and collect data in wild regions, such as emergency relief or field operations.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124833793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Registration correction in hybrid tracking for augmented reality 增强现实混合跟踪中的配准校正

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784386

Xinyu Li, Dongyi Chen

引用次数: 1

Down-down to down-up control of a circular-rail double inverted pendulum with human simulated intelligent control 仿人智能控制圆轨双倒立摆的下-下-上控制

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784229

Yuanhong Dan, Zushu Li, Zhi Tan

引用次数: 1

Passivity base control for a magnetically levitated flexible beam with rate estimation via the extended Kalman filtering technique 基于扩展卡尔曼滤波技术的磁悬浮柔性梁无源基控制

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784127

Toshimi Shimizu, M. Sasaki, T. Okada

{"title":"Passivity base control for a magnetically levitated flexible beam with rate estimation via the extended Kalman filtering technique","authors":"Toshimi Shimizu, M. Sasaki, T. Okada","doi":"10.1117/12.784127","DOIUrl":"https://doi.org/10.1117/12.784127","url":null,"abstract":"This paper presents a passivity based control combined with velocity estimation by the extended Kalman filter for a magnetically levitated flexible beam with both ends free. Passivity analyses result in that the system can be decomposed into two passive subsystems: a mechanical subsystem that consists of the flexible beam with both ends free and an electrical subsystem that is comprised of electromagnets. An output feedback controller combined with velocity estimation by the extended Kalman filter for the mechanical subsystem computes desired force required to achieve position convergence and vibration suppression of the flexible beam. In a practical point of view, economic considerations restrict accurate measurements of both position and velocity of the supporting object while the control strategy requires accurate measurements of them. Thus, we employ the extended Kalman filtering technique in order to reject noise in the velocity signals at high sampling frequencies and/or micro-displacement vibrations. A feed forward controller that generates the desired force is designed for the electrical subsystem. Effectiveness of the proposed controller and velocity estimator is demonstrated by a numerical simulation.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130021677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BMI optimization by using parallel UNDX real-coded genetic algorithm with Beowulf cluster 基于Beowulf聚类的并行UNDX实数编码遗传算法优化BMI

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784340

M. Handa, M. Kawanishi, H. Kanki

引用次数: 0

A novel octree partitioning approach based on camera parameters for unknown object representation 一种基于相机参数的八叉树分割方法用于未知物体的表示

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784520

Jeonghyun Seo, Jaewoong Kim, Sukhan Lee, Yeonchool Park

引用次数: 1

Development of fault diagnosis system for transformer based on multi-class support vector machines 基于多类支持向量机的变压器故障诊断系统开发

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.783856

Jian Cao, S. Qian, Hongsheng Hu, Gongbiao Yan

{"title":"Development of fault diagnosis system for transformer based on multi-class support vector machines","authors":"Jian Cao, S. Qian, Hongsheng Hu, Gongbiao Yan","doi":"10.1117/12.783856","DOIUrl":"https://doi.org/10.1117/12.783856","url":null,"abstract":"The support vector machine (SVM) is an algorithm based on structure risk minimizing principle and having high generalization ability. It is strong to solve the problem with small sample, nonlinear and high dimension. The fundamental theory of DGA (Dissolved Gas Analysis, DGA) and fault characteristic of transformer is firstly researched in this paper, and then the disadvantages of traditional method of transformer fault diagnosis are analyzed, finally, a new fault diagnosis method using multi-class support vector machines (M-SVMs) based on DGA theory for transformer is put forward. Then the fault diagnosis model based on M-SVMs for transformer is established. At the same time, the fault diagnosis system based on M-SVMs for transformer is developed. The system can realize the acquisition of the dissolving gas in the transformer oil and data timely and low cost transmission by GPRS (General Packet Radio Service, GPRS). And it can identify out the transformer running state according to the acquisition data. The test results show that the method proposed has an excellent performance on correct ratio. And it can overcome the disadvantage of the traditional three-ratio method which lacks of fault coding and no fault types in the existent coding. Combining the wireless communication technology with the monitoring technology, the designed and developed system can greatly improve the real-time and continuity for the transformer' condition monitoring and fault diagnosis.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126412300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Active seat suspension for a small vehicle: considerations for control system including observer 小型车辆主动座椅悬架:对包括观测器在内的控制系统的考虑

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784464

Hiroyuki Katsumata, Hiroshi Shiino, Y. Oshinoya, K. Ishibashi, K. Ozaki, Hirohiko Ogino

{"title":"Active seat suspension for a small vehicle: considerations for control system including observer","authors":"Hiroyuki Katsumata, Hiroshi Shiino, Y. Oshinoya, K. Ishibashi, K. Ozaki, Hirohiko Ogino","doi":"10.1117/12.784464","DOIUrl":"https://doi.org/10.1117/12.784464","url":null,"abstract":"We have examined the improvement of ride quality and the reduction of riding fatigue brought about by the active control of the seat suspension of small vehicles such as one-seater electric automobiles. A small active seat suspension, which is easy to install, was designed and manufactured for one-seater electric automobiles. For the actuator, a maintenance-free voice coil motor used as a direct drive was adopted. For fundamental considerations, we designed a one-degree-of-freedom model for the active seat suspension system. Then, we designed a disturbance cancellation control system that includes the observer for a two-degree-of-freedom model. In an actual driving test, a test road, in which the concavity and convexity of an actual road surface were simulated using hard rubber, was prepared and the control performance of vertical vibrations of the seat surface during driving was examined. As a result, in comparison with the one-degree-of-freedom control system, it was confirmed that the control performance was improved by the two-degree-of-freedom control system that includes the observer.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121579902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Design method and stress analysis on bioprosthetic heart valve 生物人工心脏瓣膜设计方法及应力分析

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.783864

Q. Yuan, Chengrui Zhang, X. Chen, Xiaowei Wang

{"title":"Design method and stress analysis on bioprosthetic heart valve","authors":"Q. Yuan, Chengrui Zhang, X. Chen, Xiaowei Wang","doi":"10.1117/12.783864","DOIUrl":"https://doi.org/10.1117/12.783864","url":null,"abstract":"This paper reports the geometrical design method of bioprosthetic heart valve and stress distribution of leaflets with different shapes based on the theory of Membrane and finite element analysis method. According to Membrane theories, we construct the geometrical parametric model of bioprosthetic heart valve to achieve the efficiency of the natural heart valves of human. Combining traditional design theories and modern design methods, we create the paraboloid, spherical curved surfaces in accordance with the geometrical equations in the appropriate frame ordinal. Based on the stress analysis of two kinds of curved surfaces, we take turns to create relative inverse conic curved surfaces which satisfy the actual condition. Meanwhile, the space positions of boundary curves and important points are determined by the intersected curves and axis of revolution. Geometrical design and the Finite Element analysis could provide direct and useful information for the bioprosthetic-heart-valve designer.The experimental result of the finite element analysis reveal that the force distribution of sphere valves leaflets is comparatively reasonable. We also find that paraboloid valves leaflets have such obvious features of stress concentration and non-uniform force distribution. Therefore, mechanical properties of spherical valves leaflets are superior to those of paraboloid valves leaflets.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126591254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Industrial dual arm robot manipulator for precise assembly of mechanical parts 工业用双臂机械手机器人用于机械零件的精密装配

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784482

Chanhun Park, Doohyung Kim, Kyoungtaik Park, Youngjin Choi

引用次数: 0