2017 29th Chinese Control And Decision Conference (CCDC)最新文献_第10页

Calculation and analysis of added mass for an object during its vertical water exit 物体垂直出水过程中附加质量的计算与分析

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978090

Y. Jian, Feng Jin-fu, Qi Duo, Zhang Xiao-qiang, Li Yong-li, Zhang Jing-kun

{"title":"Calculation and analysis of added mass for an object during its vertical water exit","authors":"Y. Jian, Feng Jin-fu, Qi Duo, Zhang Xiao-qiang, Li Yong-li, Zhang Jing-kun","doi":"10.1109/CCDC.2017.7978090","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978090","url":null,"abstract":"The vertical water-exit process of object involves the problem of the two-phase flow and fluid-structure coupling which is one of the key problems that need to be solved urgently in dynamic modeling and controller design of the water-exit stage of the object. Nowadays, added-mass is relatively mature and convenient method of decoupling. Because of the time-variant characteristic of the object's added-mass in water-exit process, the traditional calculation method for the added mass cannot be used directly. For this purpose, in the paper, from the dynamic equations, the computational formula of added-mass is deduced, and a new numerical strategy based on the numerical simulation is proposed to calculate the real-time changes of added mass in different stages of water-exit. On this basis, the added-mass of sphere under different velocity and acceleration conditions are computed by numerical model which is established based on FLUENT. The method is confirmed through the comparison between computational value and theoretical value of the sphere's added-mass in water-exit process. Then, the rules of added mass changes of a sphere and a cylinder during vertical water exit are studied. The results demonstrate that both vertical added mass horizontal added mass of the sphere and cylinder are decreasing in the process of vertical water exit, of which, the vertical added mass changes slowly at a submerged depth of 0.9–0.4 and the horizontal added mass changes approximately linearly. The added inertial moment changes slowly around the submerged depth of 0.5. Added static moment increases first then decreases, and reaches its peak value at the submerged length of 0.7–0.5. The new added mass calculation method is helpful to improve the accuracy of the water dynamics model of various submerged weapons. At the same time, the relevant conclusions also have some reference significance for the object of the water-exit process research, controller design and motion prediction.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"17 1","pages":"191-196"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85089464","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

Leader-following formation control of multi-agent systems in fixed and switching directed networks with time-varying delays 时变时滞固定和交换有向网络中多智能体系统的leader -follow队列控制

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978755

Fen Zhang, Yanbang Zhang

引用次数: 0

Sampling-based event-triggered control for distributed generators 基于采样的分布式发电机事件触发控制

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978156

Y. Fan, M. Sheng, Chuanbao Dong, Yang Zhang

引用次数: 4

Multi-level charging control algorithm of electric vehicle in EVs-grid system 电动汽车并网系统多级充电控制算法

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978437

Yan Li, Peng Han

引用次数: 0

Horizontal collaborative fuzzy clustering based on similarity matrix 基于相似矩阵的水平协同模糊聚类

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978138

Yan Liu, Fusheng Yu, Jing Xu

引用次数: 1

Path following control of discrete-time AUV with input-delay 具有输入延迟的离散时间AUV路径跟踪控制

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7979318

Jiemei Zhao, Zhonghui Hu

引用次数: 2

Parallel processing data streams in complex event processing systems 复杂事件处理系统中并行处理数据流

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978278

Fuyuan Xiao, Cheng Zhan, Hong Lai, Li Tao

引用次数: 2

Mathematical modeling of electrical controlled pneumatic brake 电控气动制动器的数学建模

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7979157

Yingze Yang, Lu Xiong, Zhiwu Huang, Kuo-Chi Lin

引用次数: 0

Response and control of a levitation module under track irregularities when the maglev train is traveling 磁悬浮列车运行时轨道不平整条件下悬浮模块的响应与控制

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7979112

D. Zhou, Peichang Yu, Jie Li, Lianchun Wang

{"title":"Response and control of a levitation module under track irregularities when the maglev train is traveling","authors":"D. Zhou, Peichang Yu, Jie Li, Lianchun Wang","doi":"10.1109/CCDC.2017.7979112","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7979112","url":null,"abstract":"The EMS (Electro-Magnetic Suspension) maglev train uses attractive magnetic forces to neutralize its weight, which puts a rather high requirement on the smoothness of the track since the levitation gap is generally 8∼10 mm. It has been observed that in a traveling urban maglev train, the levitation gap error of the rear levitation unit in a levitation module is generally more prominent than that of the front levitation units; and under poor track conditions, the rear electromagnet of the levitation unit is more likely to clash with the track and to cause a levitation failure. However, this phenomenon has not yet been well interpreted. In this paper, a model of the levitation module in a maglev train is built to study the responses of the levitation gaps under different vehicle speed and track conditions, and results show that the levitation module is sensitive to some specified wavelengths of the track irregularities, and the analysis well interprets the reason that causes the difference of the response for the front and the rear levitation unit under track irregularities. A control strategy is also proposed to reduce the rear gap fluctuation.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"36 1","pages":"3501-3506"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82978378","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

Under the IT environment inventory accounting and management studies IT环境下的存货会计与管理研究

2017 29th Chinese Control And Decision Conference (CCDC) Pub Date : 2017-05-01 DOI: 10.1109/CCDC.2017.7978949

L. Jinping

引用次数: 3