Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978090
Y. Jian, Feng Jin-fu, Qi Duo, Zhang Xiao-qiang, Li Yong-li, Zhang Jing-kun
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.
{"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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978755
Fen Zhang, Yanbang Zhang
This paper is concerned with leader-following formation problem for second-order multi-agent systems. A modified neighbor-based formation control algorithm with time-varying is constructed. Employing Lyapunov-Razumikhin theorem and linear matrix inequalities (LMIs) approach, respectively, the formation consensus conditions are derived to guarantee the agents achieve and maintain the desired formation in a fixed directed network. Moreover, LMIs approach for a fixed directed network can be extended straightforwardly to switching directed networks. Finally, a numerical example is given to illustrate the effectiveness of the proposed results.
{"title":"Leader-following formation control of multi-agent systems in fixed and switching directed networks with time-varying delays","authors":"Fen Zhang, Yanbang Zhang","doi":"10.1109/CCDC.2017.7978755","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978755","url":null,"abstract":"This paper is concerned with leader-following formation problem for second-order multi-agent systems. A modified neighbor-based formation control algorithm with time-varying is constructed. Employing Lyapunov-Razumikhin theorem and linear matrix inequalities (LMIs) approach, respectively, the formation consensus conditions are derived to guarantee the agents achieve and maintain the desired formation in a fixed directed network. Moreover, LMIs approach for a fixed directed network can be extended straightforwardly to switching directed networks. Finally, a numerical example is given to illustrate the effectiveness of the proposed results.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"42 1","pages":"1499-1504"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85283560","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978156
Y. Fan, M. Sheng, Chuanbao Dong, Yang Zhang
This work investigates the coordination control problem for multiple distributed generation (DG) units with a hierarchical control structure. At the secondary control level, an event-triggered power sharing strategy based on the concept of multi-agent consensus has been proposed for the DG coordination control. The performance evaluation results show that the proposed algorithm can achieve precise power sharing.
{"title":"Sampling-based event-triggered control for distributed generators","authors":"Y. Fan, M. Sheng, Chuanbao Dong, Yang Zhang","doi":"10.1109/CCDC.2017.7978156","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978156","url":null,"abstract":"This work investigates the coordination control problem for multiple distributed generation (DG) units with a hierarchical control structure. At the secondary control level, an event-triggered power sharing strategy based on the concept of multi-agent consensus has been proposed for the DG coordination control. The performance evaluation results show that the proposed algorithm can achieve precise power sharing.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"81 1","pages":"5556-5560"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85931583","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978437
Yan Li, Peng Han
In order to satisfy the needs of the clean energy usage and the rapid development of the smart micro grid and electric vehicle industry under the energy internet environment, an effective and highly applicable control algorithm which could ensure the safe and stable operation of smart micro grid with the large access of the electric vehicles is desperately needed. This paper firstly built the agent-based model of the electric vehicle by analyzing the autonomous operation of the electric vehicles, and then proposes a multilevel charging control algorithm oriented to the regional smart micro grid and the EVs' different kinds of power supplement, which includes the micro grid-level centralized control for the batteries' centralized charging and the user-level active control for the EVs' dispersed charging. The optimization goal is to minimize the fluctuation of the load in the regional smart micro grid under the premise that it does not affect the normal operation of electric vehicles. Finally, the corresponding case scene simulation is carried out in order to verify the effect of the proposed algorithm.
{"title":"Multi-level charging control algorithm of electric vehicle in EVs-grid system","authors":"Yan Li, Peng Han","doi":"10.1109/CCDC.2017.7978437","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978437","url":null,"abstract":"In order to satisfy the needs of the clean energy usage and the rapid development of the smart micro grid and electric vehicle industry under the energy internet environment, an effective and highly applicable control algorithm which could ensure the safe and stable operation of smart micro grid with the large access of the electric vehicles is desperately needed. This paper firstly built the agent-based model of the electric vehicle by analyzing the autonomous operation of the electric vehicles, and then proposes a multilevel charging control algorithm oriented to the regional smart micro grid and the EVs' different kinds of power supplement, which includes the micro grid-level centralized control for the batteries' centralized charging and the user-level active control for the EVs' dispersed charging. The optimization goal is to minimize the fluctuation of the load in the regional smart micro grid under the premise that it does not affect the normal operation of electric vehicles. Finally, the corresponding case scene simulation is carried out in order to verify the effect of the proposed algorithm.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"5 1","pages":"6965-6970"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86020537","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978138
Yan Liu, Fusheng Yu, Jing Xu
The collaborative information in horizontal collaborative fuzzy clustering is transmitted by partition matrix, which requires that the dimensions of collaborating partition matrix and collaborated partition matrix must be the same. It requires that the collaborative datasets are clustered into the same number of clusters, but in many cases it is not suitable or difficult to do. In this paper, a new collaborative information transfer mechanism is proposed, which utilizes the similarity matrix to transfer the collaborative information. In this way, when the objective function is designed, the operation of the partition matrix can be transformed into the operation of the similarity matrix, so as to realize the horizontal collaborative fuzzy clustering in the case of different number of clusters. The experimental results show that the proposed algorithm is effective, which extends the application range of horizontal collaborative clustering.
{"title":"Horizontal collaborative fuzzy clustering based on similarity matrix","authors":"Yan Liu, Fusheng Yu, Jing Xu","doi":"10.1109/CCDC.2017.7978138","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978138","url":null,"abstract":"The collaborative information in horizontal collaborative fuzzy clustering is transmitted by partition matrix, which requires that the dimensions of collaborating partition matrix and collaborated partition matrix must be the same. It requires that the collaborative datasets are clustered into the same number of clusters, but in many cases it is not suitable or difficult to do. In this paper, a new collaborative information transfer mechanism is proposed, which utilizes the similarity matrix to transfer the collaborative information. In this way, when the objective function is designed, the operation of the partition matrix can be transformed into the operation of the similarity matrix, so as to realize the horizontal collaborative fuzzy clustering in the case of different number of clusters. The experimental results show that the proposed algorithm is effective, which extends the application range of horizontal collaborative clustering.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"80 1","pages":"462-466"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80924656","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7979318
Jiemei Zhao, Zhonghui Hu
A path following control problem of discrete-time autonomous underwater vehicle (AUV) with input delay is studied. For solving the time-delay in control system, an neural network (NN) predictive control method is introduced. Since the velocities are very difficult to be accurately measured, here output feedback method is employed to overcome this problem. The stability analysis is given by Lyapunov theorem. Simulation results show the effectiveness of the proposed control strategy.
{"title":"Path following control of discrete-time AUV with input-delay","authors":"Jiemei Zhao, Zhonghui Hu","doi":"10.1109/CCDC.2017.7979318","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7979318","url":null,"abstract":"A path following control problem of discrete-time autonomous underwater vehicle (AUV) with input delay is studied. For solving the time-delay in control system, an neural network (NN) predictive control method is introduced. Since the velocities are very difficult to be accurately measured, here output feedback method is employed to overcome this problem. The stability analysis is given by Lyapunov theorem. Simulation results show the effectiveness of the proposed control strategy.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"36 1","pages":"4648-4652"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81075552","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978278
Fuyuan Xiao, Cheng Zhan, Hong Lai, Li Tao
For distributed complex event processing systems, handling high volume and continuous data streams with high throughput are required for further decision support. Due to the specific properties of pattern operators, it is difficult to process the data streams in parallel over complex event processing systems. To address the issue, a novel parallel processing strategy is proposed. The proposed method can keep the complex event processing system working stably and continuously via the elapsed time. Finally, the utility of our work is demonstrated through the experiments on the StreamBase system.
{"title":"Parallel processing data streams in complex event processing systems","authors":"Fuyuan Xiao, Cheng Zhan, Hong Lai, Li Tao","doi":"10.1109/CCDC.2017.7978278","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978278","url":null,"abstract":"For distributed complex event processing systems, handling high volume and continuous data streams with high throughput are required for further decision support. Due to the specific properties of pattern operators, it is difficult to process the data streams in parallel over complex event processing systems. To address the issue, a novel parallel processing strategy is proposed. The proposed method can keep the complex event processing system working stably and continuously via the elapsed time. Finally, the utility of our work is demonstrated through the experiments on the StreamBase system.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"31 1","pages":"6157-6160"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79515222","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7979157
Yingze Yang, Lu Xiong, Zhiwu Huang, Kuo-Chi Lin
Inconsistent brake forces will aggravate impacts of collision between adjacent freight cars with different car types and load weights, especially in rigid connection mode which is widely used in Chinese freight lines. As it's designed with complex components and various operation modes the pneumatic brake system is a highly nonlinear one, it is hard to model and analyze its instantaneous state. In this paper, a mathematic model of the pneumatic brake is proposed. According to real-time operation mode of ECP system and brake stage of freight train, tracking object is dynamically adjusted to fit complex railway conditions. Finally, simulation results verify the astringency of this proposed algorithm, and shows collisions of ECP brake are decreased and real-time performance is improved.
{"title":"Mathematical modeling of electrical controlled pneumatic brake","authors":"Yingze Yang, Lu Xiong, Zhiwu Huang, Kuo-Chi Lin","doi":"10.1109/CCDC.2017.7979157","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7979157","url":null,"abstract":"Inconsistent brake forces will aggravate impacts of collision between adjacent freight cars with different car types and load weights, especially in rigid connection mode which is widely used in Chinese freight lines. As it's designed with complex components and various operation modes the pneumatic brake system is a highly nonlinear one, it is hard to model and analyze its instantaneous state. In this paper, a mathematic model of the pneumatic brake is proposed. According to real-time operation mode of ECP system and brake stage of freight train, tracking object is dynamically adjusted to fit complex railway conditions. Finally, simulation results verify the astringency of this proposed algorithm, and shows collisions of ECP brake are decreased and real-time performance is improved.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"7 1","pages":"3753-3757"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79533459","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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7979112
D. Zhou, Peichang Yu, Jie Li, Lianchun Wang
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.
{"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}
Pub Date : 2017-05-01DOI: 10.1109/CCDC.2017.7978949
L. Jinping
The content of the inventory accounting and management is very complicated, The difficulty of the traditional environment accounting and inventory management is very big, Especially when there are many different kinds of enterprise inventory, Warehouse more cases, The difficulty of manual management, Under the IT environment, The organic fusion of information technology and inventory management, Set up under the environment of informatization inventory management system, To improve the accuracy of inventory accounting and the validity of the inventory management has important practical significance.
{"title":"Under the IT environment inventory accounting and management studies","authors":"L. Jinping","doi":"10.1109/CCDC.2017.7978949","DOIUrl":"https://doi.org/10.1109/CCDC.2017.7978949","url":null,"abstract":"The content of the inventory accounting and management is very complicated, The difficulty of the traditional environment accounting and inventory management is very big, Especially when there are many different kinds of enterprise inventory, Warehouse more cases, The difficulty of manual management, Under the IT environment, The organic fusion of information technology and inventory management, Set up under the environment of informatization inventory management system, To improve the accuracy of inventory accounting and the validity of the inventory management has important practical significance.","PeriodicalId":6588,"journal":{"name":"2017 29th Chinese Control And Decision Conference (CCDC)","volume":"7 1","pages":"2579-2583"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85443275","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}
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