Pub Date : 2018-06-01DOI: 10.1109/CCDC.2018.8407151
Yunong Zhang, Zhiyuan Qi, H. Gong, Jian Li, Binbin Qiu
Future minimization, i.e., discrete time-varying minimization, is a difficult and meaningful problem. It has been successfully solved by Zhang et al using zeroing dynamics (ZD) and discretization formulas. In this paper, a type of discrete-time ZD (DT-ZD) model, which is obtained via utilizing ZeaD (Zhang et al Discretization) formula 4IgS_Y, is analyzed and investigated to ensure its stability. Specifically, via theoretical guarantees, we propose the step-length domain, or say, the effective domain of the step-length, which makes the discrete-time model stable. Additionally, we make further efforts to obtain the step-length optimum which provides the optimal stability of the DT-ZD model. Eventually, numerical experiments are performed to validate the step-length domain and the step-length optimum of the DT-ZD model for future minimization.
未来极小化，即离散时变极小化，是一个困难而又有意义的问题。Zhang等人利用归零动力学(ZD)和离散化公式成功地求解了该问题。本文对利用ZeaD (Zhang et al Discretization)公式4IgS_Y得到的一类离散时间ZD (DT-ZD)模型进行分析和研究，以保证其稳定性。具体地说，通过理论保证，我们提出了步长域，或者说，步长的有效域，使离散时间模型稳定。此外，我们进一步努力获得步长最优，以提供DT-ZD模型的最佳稳定性。最后，通过数值实验验证了DT-ZD模型的步长域和步长最优，以实现未来的最小化。
{"title":"About step-length of ZeaD (Zhang et al Discretization) formula 4IgS_Y for future minimization via fan equations","authors":"Yunong Zhang, Zhiyuan Qi, H. Gong, Jian Li, Binbin Qiu","doi":"10.1109/CCDC.2018.8407151","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407151","url":null,"abstract":"Future minimization, i.e., discrete time-varying minimization, is a difficult and meaningful problem. It has been successfully solved by Zhang et al using zeroing dynamics (ZD) and discretization formulas. In this paper, a type of discrete-time ZD (DT-ZD) model, which is obtained via utilizing ZeaD (Zhang et al Discretization) formula 4IgS_Y, is analyzed and investigated to ensure its stability. Specifically, via theoretical guarantees, we propose the step-length domain, or say, the effective domain of the step-length, which makes the discrete-time model stable. Additionally, we make further efforts to obtain the step-length optimum which provides the optimal stability of the DT-ZD model. Eventually, numerical experiments are performed to validate the step-length domain and the step-length optimum of the DT-ZD model for future minimization.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126211746","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 : 2018-06-01DOI: 10.1109/ccdc.2018.8407145
Hao Hu
This paper is concerned with the D-stabilization problem of a class of delta operator switched linear systems with actuator faults based on output feedback. The reliable output controller can guarantee the D-stabilization of every mode of the switched system. The switching law, designed by using Average Dwell Time(ADT) approach, can guarantee the asymptotic stability of the closed-loop switched system. Finally, the simulation results illustrates the validity and feasibility of the proposed approach.
{"title":"Reliable pole assignment of delta operator switched systems based on static output feedback","authors":"Hao Hu","doi":"10.1109/ccdc.2018.8407145","DOIUrl":"https://doi.org/10.1109/ccdc.2018.8407145","url":null,"abstract":"This paper is concerned with the D-stabilization problem of a class of delta operator switched linear systems with actuator faults based on output feedback. The reliable output controller can guarantee the D-stabilization of every mode of the switched system. The switching law, designed by using Average Dwell Time(ADT) approach, can guarantee the asymptotic stability of the closed-loop switched system. Finally, the simulation results illustrates the validity and feasibility of the proposed approach.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126218390","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407036
Qun Niu, Tianning Chen
LMS adaptive filtering algorithm is widely used in adaptive control system. To a certain extent the variable step size LMS algorithm can solve the conflict between convergence rate and steady-state error. It is difficult for the traditional LMS to solve. A new variable step size LMS adaptive algorithm based on the existing algorithm is proposed in this paper. By using the gradient of the filter coefficient vector W(n) the algorithm accelerates the convergence speed on the basis of ensuring the convergence accuracy. At the same time, the update formula of step size is adjusted to enhance the ability of the algorithm to resist noise interference. Finally, the MATLAB simulation results show that the algorithm has faster convergence speed, smaller steady-state error and better robustness.
{"title":"A new variable step size LMS adaptive algorithm","authors":"Qun Niu, Tianning Chen","doi":"10.1109/CCDC.2018.8407036","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407036","url":null,"abstract":"LMS adaptive filtering algorithm is widely used in adaptive control system. To a certain extent the variable step size LMS algorithm can solve the conflict between convergence rate and steady-state error. It is difficult for the traditional LMS to solve. A new variable step size LMS adaptive algorithm based on the existing algorithm is proposed in this paper. By using the gradient of the filter coefficient vector W(n) the algorithm accelerates the convergence speed on the basis of ensuring the convergence accuracy. At the same time, the update formula of step size is adjusted to enhance the ability of the algorithm to resist noise interference. Finally, the MATLAB simulation results show that the algorithm has faster convergence speed, smaller steady-state error and better robustness.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126447782","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407411
Hou Deting, Qi Zongfeng, Jiang Teng, Zhu Minpeng
Considering the influence of interference, the effectiveness evaluation index and corresponding quantization rules of warning radar are put forward. The weights of indexes are determined by AHP and entropy weight method. Considering the logical relationship among indexes, the aggregation method is improved, and index system is established reflecting equipment efficiency more accurately. The algorithm of efficiency aggregation based on matrix operation is proposed, which contains the ability of dealing with uncertain information, and the ability of aggregating efficiency of indexes which restrict each other. The evaluation results are visualized by cloud model theory, and the concept of the attraction degree, and the principle of maximum attraction are put forward. The effectiveness of the warning radar under remote support jamming is analyzed, and obtains good results. The feasibility of the improved method is proved. It provides decision basis for performance evaluation of single radar in jamming environment and performance ranking of multiple radars.
{"title":"Effectiveness evaluation method for warning radar in jamming environment","authors":"Hou Deting, Qi Zongfeng, Jiang Teng, Zhu Minpeng","doi":"10.1109/CCDC.2018.8407411","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407411","url":null,"abstract":"Considering the influence of interference, the effectiveness evaluation index and corresponding quantization rules of warning radar are put forward. The weights of indexes are determined by AHP and entropy weight method. Considering the logical relationship among indexes, the aggregation method is improved, and index system is established reflecting equipment efficiency more accurately. The algorithm of efficiency aggregation based on matrix operation is proposed, which contains the ability of dealing with uncertain information, and the ability of aggregating efficiency of indexes which restrict each other. The evaluation results are visualized by cloud model theory, and the concept of the attraction degree, and the principle of maximum attraction are put forward. The effectiveness of the warning radar under remote support jamming is analyzed, and obtains good results. The feasibility of the improved method is proved. It provides decision basis for performance evaluation of single radar in jamming environment and performance ranking of multiple radars.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128079455","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407867
Chunjie Li, Jiapei Li
With the progress of science and technology, computer technology and virtual reality technology have made rapid progress. Therefore, virtual experiment technology has been developing rapidly with the help of it. Because of the shortage and safety of the current computer hardware assembly experimental equipment, this thesis aims to study the computer hardware assembly virtual experiment based on 3ds Maxand Virtools technology. In order to achieve real results of experiment we apply a real hardware laboratory scene in a computer simulation and increase the interaction function. The development of this experiment will not only effectively solve the problems of equipment shortage, loss and safety in computer hardware assembly experiment, but also enrich the auxiliary means of education and teaching so that put forward a new attempt for the transformation of traditional laboratories.
{"title":"Development and design of virtual experiment system based on 3dsMax and Virtools technology","authors":"Chunjie Li, Jiapei Li","doi":"10.1109/CCDC.2018.8407867","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407867","url":null,"abstract":"With the progress of science and technology, computer technology and virtual reality technology have made rapid progress. Therefore, virtual experiment technology has been developing rapidly with the help of it. Because of the shortage and safety of the current computer hardware assembly experimental equipment, this thesis aims to study the computer hardware assembly virtual experiment based on 3ds Maxand Virtools technology. In order to achieve real results of experiment we apply a real hardware laboratory scene in a computer simulation and increase the interaction function. The development of this experiment will not only effectively solve the problems of equipment shortage, loss and safety in computer hardware assembly experiment, but also enrich the auxiliary means of education and teaching so that put forward a new attempt for the transformation of traditional laboratories.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125745650","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8408022
Yuxin Shi, Liang Wang, Huidong Guo, Rui Li, Yuhao Shi
It is easy for substation protection to access all the action information of local protection, this paper proposed a substation protection algorithm based on the current merged credible factor. First, update the current setting values of each component and collect the action information of current protection, calculate the support level of each protection to component based on effective protection range. Then, use this support level as the weight of protection action and build merged credible function and merged credible expected function of substation current protection. Finally, merged credible factor is defined as the ratio of these two functions, the faulted component can be identified by the maximum value of merged credible factor. The results of real substation show that faulty component can be identified correctly and rapidly without analog information or synchronized information. This algorithm also has good adaptability and fault tolerance in the case of information missing or error.
{"title":"Substation Protection Based on Current Merged Credible Factor","authors":"Yuxin Shi, Liang Wang, Huidong Guo, Rui Li, Yuhao Shi","doi":"10.1109/CCDC.2018.8408022","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8408022","url":null,"abstract":"It is easy for substation protection to access all the action information of local protection, this paper proposed a substation protection algorithm based on the current merged credible factor. First, update the current setting values of each component and collect the action information of current protection, calculate the support level of each protection to component based on effective protection range. Then, use this support level as the weight of protection action and build merged credible function and merged credible expected function of substation current protection. Finally, merged credible factor is defined as the ratio of these two functions, the faulted component can be identified by the maximum value of merged credible factor. The results of real substation show that faulty component can be identified correctly and rapidly without analog information or synchronized information. This algorithm also has good adaptability and fault tolerance in the case of information missing or error.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125753303","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407935
Sha Xiaoqiang, Li Le, Chen Xi
In order to improve the positioning accuracy of time of arrival (TOA) in mine and analyse the main factors of positioning error of TOA, a method of TOA positioning for mine to effectively reduce the impact of non - line of sight (NLOS) error propagation is proposed based on the effective suppression of synchronization delay and timing error by symmetrical double-sided two way ranging (SDS-TWR). Firstly, the Kalman filter is used to eliminate the random NLOS delay caused by locomotives and other irregular devices. Then the parameter fitting method and geometric method are used to restrain the errors caused by the fixed NLOS delay in the locating area. The MATLAB simulation results show that the proposed method has a significant inhibitory effect on TOA positioning error and improves the accuracy of TOA positioning in the mine.
{"title":"A Method of TOA Positioning for Mine to Effectively Reduce the Impact of Non - Line of Sight Error propagation","authors":"Sha Xiaoqiang, Li Le, Chen Xi","doi":"10.1109/CCDC.2018.8407935","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407935","url":null,"abstract":"In order to improve the positioning accuracy of time of arrival (TOA) in mine and analyse the main factors of positioning error of TOA, a method of TOA positioning for mine to effectively reduce the impact of non - line of sight (NLOS) error propagation is proposed based on the effective suppression of synchronization delay and timing error by symmetrical double-sided two way ranging (SDS-TWR). Firstly, the Kalman filter is used to eliminate the random NLOS delay caused by locomotives and other irregular devices. Then the parameter fitting method and geometric method are used to restrain the errors caused by the fixed NLOS delay in the locating area. The MATLAB simulation results show that the proposed method has a significant inhibitory effect on TOA positioning error and improves the accuracy of TOA positioning in the mine.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937628","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407111
Haifang Li, N. Zhao, Xian Zhang
Necessary conditions for the exponential stability of the linear discrete time-delay system are presented by employing the so-called Lyapunov-Krasovskii functional approach. These conditions not only provide a new tool for stability analysis of the linear discrete time-delay system by characterizing instability domains, but also extend the existing results of the linear discrete time-delay system. Simultaneously, we investigate several crucial properties that connect the Lyapunov matrix and the fundamental matrix of the system. A numerical example illustrates the validity of the obtained results.
{"title":"Necessary exponential stability conditions for linear discrete time-delay systems","authors":"Haifang Li, N. Zhao, Xian Zhang","doi":"10.1109/CCDC.2018.8407111","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407111","url":null,"abstract":"Necessary conditions for the exponential stability of the linear discrete time-delay system are presented by employing the so-called Lyapunov-Krasovskii functional approach. These conditions not only provide a new tool for stability analysis of the linear discrete time-delay system by characterizing instability domains, but also extend the existing results of the linear discrete time-delay system. Simultaneously, we investigate several crucial properties that connect the Lyapunov matrix and the fundamental matrix of the system. A numerical example illustrates the validity of the obtained results.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937706","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8408038
Xiaofeng Li, Haixin Luo, Ya Gao, Yi You, Yueyang Li
In this paper, a feedforward-feedback coordinated control scheme is proposed for the hybrid wind farm and combined cycle power plant (CCPP) system. In this system, we first identify the power control loop model of CPCC and the process model of the wind turbine generator (WTG), according to the automatic generation control and daily wind farm operating data. Specifically, the process frequency response is estimated using the measured input and output data of the process loop; their transfer functions are obtained by solving least squares with the variables amplitude and phase. Based on above CCPP and WTG models, the improved Internal Model Control (IMC) and optimal feedforward controller methods are then used to design the feedback and feedforward controllers. In comparative study we demonstrate that, the proposed scheme achieves significant improvement in reducing power deviation in the grid caused by the intermittent wind power.
{"title":"Frequency Domain Identification-Based Feedforward-Feedback Controller for Coordinated Power Control of Wind and Gas Joint Power Generation","authors":"Xiaofeng Li, Haixin Luo, Ya Gao, Yi You, Yueyang Li","doi":"10.1109/CCDC.2018.8408038","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8408038","url":null,"abstract":"In this paper, a feedforward-feedback coordinated control scheme is proposed for the hybrid wind farm and combined cycle power plant (CCPP) system. In this system, we first identify the power control loop model of CPCC and the process model of the wind turbine generator (WTG), according to the automatic generation control and daily wind farm operating data. Specifically, the process frequency response is estimated using the measured input and output data of the process loop; their transfer functions are obtained by solving least squares with the variables amplitude and phase. Based on above CCPP and WTG models, the improved Internal Model Control (IMC) and optimal feedforward controller methods are then used to design the feedback and feedforward controllers. In comparative study we demonstrate that, the proposed scheme achieves significant improvement in reducing power deviation in the grid caused by the intermittent wind power.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115932893","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 : 2018-06-01DOI: 10.1109/CCDC.2018.8407808
Can Li, Jie Lian, Hongwei Wang
This paper investigates the sampled-data control for a switched nonlinear system whose subsystems are represented by a family of T-S fuzzy models. In the case that the switching occurs at two consecutive sampling times, such a sampling interval is divided into a pseudo-matched interval and a mismatched interval. The sampling time interval without switching is defined as another pseudo-matched interval. For these intervals, three new functionals are respectively constructed by means of multiple Lyapunov functions, looped functionals and a discontinuous scalar auxiliary function. The proposed functionals do not need to be positive definite, and the jumps of functionals at switching instants are eliminated. Sufficient conditions on exponential stabilization via sampled-data state feedback are established.
{"title":"Sampled-data control of switched nonlinear systems via T-S fuzzy models","authors":"Can Li, Jie Lian, Hongwei Wang","doi":"10.1109/CCDC.2018.8407808","DOIUrl":"https://doi.org/10.1109/CCDC.2018.8407808","url":null,"abstract":"This paper investigates the sampled-data control for a switched nonlinear system whose subsystems are represented by a family of T-S fuzzy models. In the case that the switching occurs at two consecutive sampling times, such a sampling interval is divided into a pseudo-matched interval and a mismatched interval. The sampling time interval without switching is defined as another pseudo-matched interval. For these intervals, three new functionals are respectively constructed by means of multiple Lyapunov functions, looped functionals and a discontinuous scalar auxiliary function. The proposed functionals do not need to be positive definite, and the jumps of functionals at switching instants are eliminated. Sufficient conditions on exponential stabilization via sampled-data state feedback are established.","PeriodicalId":409960,"journal":{"name":"2018 Chinese Control And Decision Conference (CCDC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131942599","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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