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2014 18th International Conference on System Theory, Control and Computing (ICSTCC)最新文献

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Model predictive control and fuzzy control in a hierarchical structure for wastewater treatment plants 污水处理厂层次结构的模型预测控制和模糊控制
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982445
I. Santín, C. Pedret, R. Vilanova
{"title":"Model predictive control and fuzzy control in a hierarchical structure for wastewater treatment plants","authors":"I. Santín, C. Pedret, R. Vilanova","doi":"10.1109/ICSTCC.2014.6982445","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982445","url":null,"abstract":"This paper presents a hierarchical two-level control structure for a biological wastewater treatment plant (WWTP), with the goal of simultaneously improving the effluent quality and reducing operational costs. The Benchmark Simulation Model No.1 is used as working scenario. The idea is to adjust the dissolved oxygen in the fifth tank (DO5) according with the present working conditions, instead of keeping it in a fixed value. Thus is concreted by a hierarchical structure. MPC with inlet flow rate feedforward control (MPC + FF) is proposed for the lower level to control nitrate nitrogen concentration of the second tank (NO2) and DO5. The high level is the responsible for adjusting the DO setpoint in the fifth tank (DO5 setpoint) of the controller of the low level, according with the ammonium and ammonia nitrogen concentration in the fifth tank (NH5). The controller for the high level is based on a Fuzzy control. A tuning region has been determined for the high level controller, in which the results show a simultaneously improvement of the effluent quality and operational cost.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115360934","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: 11
GA-based attempts to improve the recognition rate and generalization capacity of the nonlinear soft margin support vector machines 基于遗传算法的非线性软裕度支持向量机试图提高其识别率和泛化能力
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982531
L. State, C. Cocianu, Marinela Mircea
{"title":"GA-based attempts to improve the recognition rate and generalization capacity of the nonlinear soft margin support vector machines","authors":"L. State, C. Cocianu, Marinela Mircea","doi":"10.1109/ICSTCC.2014.6982531","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982531","url":null,"abstract":"The aim of the paper is to report a new method based on genetic computation of designing a nonlinear soft margin SVM yielding to significant improvements in discriminating between two classes. The design of the SVM is performed in a supervised way, in general the samples coming from the classes being nonlinearly separable. The experimental analysis was performed on artificially generated data as well as on Ripley and MONK's datasets reported in the fourth section of the paper. The tests proved real improvements of both the recognition rate and generalization capacities without significantly increasing the computational complexity.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122436526","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
Optimizing neural network topology using Shapley value 利用Shapley值优化神经网络拓扑
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982527
F. Leon
{"title":"Optimizing neural network topology using Shapley value","authors":"F. Leon","doi":"10.1109/ICSTCC.2014.6982527","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982527","url":null,"abstract":"The paper proposes a destructive method for optimizing the topology of neural networks based on the Shapley value, a game theoretic solution concept which estimates the contribution of each network element to the overall performance. More network elements can be simultaneously pruned, which can lead to shorter execution times and better results. An evolutionary hill climbing procedure is used to fine-tune the network after each simplification.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114449309","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
Minimal factorization of transfer matrices for generalized systems 广义系统转移矩阵的最小分解
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982383
C. Flutur, C. Oara
{"title":"Minimal factorization of transfer matrices for generalized systems","authors":"C. Flutur, C. Oara","doi":"10.1109/ICSTCC.2014.6982383","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982383","url":null,"abstract":"Given a generalized system whose transfer matrix function may be improper or may be polynomial, we provide necessary and sufficient conditions under which a minimal factorization does exist. The conditions are formulated in terms of deflating subspaces of pencils related to a special type of realisation, called centered, which allows to efficiently cater for poles and/or zeroes at infinity.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122134560","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
Fuzzy modeling and control for a road section 路段模糊建模与控制
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982417
C. Dimon, D. Popescu, D. Stefanoiu
{"title":"Fuzzy modeling and control for a road section","authors":"C. Dimon, D. Popescu, D. Stefanoiu","doi":"10.1109/ICSTCC.2014.6982417","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982417","url":null,"abstract":"When dealing with road traffic modeling, one problem is given by the difficulty of modeling the dynamics of a vehicle/group of vehicles from the time it enters a road section until it reaches the end. Besides, road traffic, seen as a complex dynamic process, is difficult to be characterized by fixed values. Therefore, this paper proposes a solution using fuzzy logic control, which by analyzing the occupancy of a section, establishes a number of linguistic features. For modeling the behavior of the road section the macroscopic approach is used.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129799087","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
Finite-horizon linear-quadratic optimal control of discrete-time systems with input delay 具有输入时滞的离散系统的有限视界线性二次最优控制
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982516
P. Ignaciuk
{"title":"Finite-horizon linear-quadratic optimal control of discrete-time systems with input delay","authors":"P. Ignaciuk","doi":"10.1109/ICSTCC.2014.6982516","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982516","url":null,"abstract":"The paper addresses the problem of remote plant regulation with the use of linear-quadratic (LQ) optimal control strategy. Since modern, practical applications favor digital solutions, the controller design is conducted directly in discrete time domain. By direct treatment of Riccati equation, it is shown that the finite-time optimization problem for systems involving delay may be reduced to an equivalent delay-free problem with variables expressed in delay compensator dynamics and time-varying control gains. As a result, the computational complexity to solve the design equations is reduced to that encountered in direct plant control and efficient implementation is ensured.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126816844","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
A data-driven approach for the design of feedback controllers 反馈控制器设计的数据驱动方法
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982484
M. Barbu, E. Ceanga
{"title":"A data-driven approach for the design of feedback controllers","authors":"M. Barbu, E. Ceanga","doi":"10.1109/ICSTCC.2014.6982484","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982484","url":null,"abstract":"In this paper a simple solution to obtain a feedback controller from input - output process data is proposed. The method uses the virtual reference structure and the virtual error in order to identify a dynamic compensator (DC) that achieves the derivative behaviour of the controller. The DC, defined as an adaptive filter, achieves a precise and extended compensation of the process dynamics. The controller gain is computed in two ways: either by imposing the gain stability margin, as in the case of processes with significant dead time or with large pole excess, or by imposing the phase stability margin, for other types of processes. Both ways are illustrated in the paper by conclusive case studies.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125661926","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
Phase resistance estimation and monitoring of PMSM used in electrical vehicles 电动汽车用永磁同步电机相阻估算与监测
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982468
Razvan Mocanu, A. Onea
{"title":"Phase resistance estimation and monitoring of PMSM used in electrical vehicles","authors":"Razvan Mocanu, A. Onea","doi":"10.1109/ICSTCC.2014.6982468","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982468","url":null,"abstract":"Permanent magnet synchronous motors (PMSM) are widely used in electric vehicle application due to their high power density, high efficiency and very good performance at low speeds. Safety concerns in automotive industry require monitoring of the system to ensure a correct and safe operation of the electric vehicle. This paper presents three software methods for estimating the winding electrical resistance and detecting an open phase failure during torque control operation of a PMSM. All three methods can be applied online. Differences between these methods are reflected into computational effort and efficiency. The described methods were numerically simulated and tested in MATLAB. The first two methods monitor the electrical resistance of the stator windings which are estimated through an Extended Kalman Filter (EKF) and an Unscented Kalman Filter (UKF). Hence, the three phase model and the rotating reference frame model are both used as internal models for the proposed Kalman filters and the estimation performance is evaluated in each case. In order to detect an open phase fault, the gradient of the estimated electrical resistance is monitored. The third method which is independent of the motor parameters calculates the Discrete Fourier Transformation (DFT) coefficients of the fundamental frequency in the phase currents signals. Hence, due to the low computational effort and good performance, the Goertzel algorithm is proposed. Conclusions are drawn based on estimation accuracy, time response and complexity of each method.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"262 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115953636","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: 14
Path planning for a formation of autonomous robots in an unknown environment using artificial force fields 基于人工力场的未知环境下自主机器人编队路径规划
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982512
A. Dang, J. Horn
{"title":"Path planning for a formation of autonomous robots in an unknown environment using artificial force fields","authors":"A. Dang, J. Horn","doi":"10.1109/ICSTCC.2014.6982512","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982512","url":null,"abstract":"A novel approach to path planning for the formation of a swarm of autonomous robots in an unknown environment is presented in this paper. This approach is designed based on the traditional potential fields combined with the rotational vector field. Under the action of this blended vector field, autonomous robots can easily avoid obstacles in order to reach the target position. Furthermore, in this approach, the neighboring robots in a swarm will be linked to each other by the attractive and the repulsive vector field between them in order to generate a stable formation. Information about obstacles, which each member robot detects from the environment, will be sent to all other member robots in the swarm. Hence, while these autonomous robots move towards the target position, the formation of them is maintained and there are no collisions between them. Simulation results and experiments have verified the success of this approach.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132322413","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: 9
State-feedback current control of permanent magnet synchronous machine based automotive electrical traction drives under real-time and physical constraints 实时和物理约束下基于汽车电牵引驱动的永磁同步电机状态反馈电流控制
2014 18th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2014-12-15 DOI: 10.1109/ICSTCC.2014.6982467
S. Carpiuc, C. Lazar
{"title":"State-feedback current control of permanent magnet synchronous machine based automotive electrical traction drives under real-time and physical constraints","authors":"S. Carpiuc, C. Lazar","doi":"10.1109/ICSTCC.2014.6982467","DOIUrl":"https://doi.org/10.1109/ICSTCC.2014.6982467","url":null,"abstract":"A relevant challenge for the automotive industry is the control of permanent magnet synchronous machines (PMSMs) employed in automotive electrical traction drives. A common characteristic of these applications is the fast dynamics which is subject to several physical and real-time constraints. Therefore, the goal of this paper is to provide an effective control methodology that can answer to this challenging problem. To this end, firstly, using a standard quadratic control Lyapunov function (CLF), a linear control law is obtained for the unconstrained dynamics. Secondly, a piecewise affine control law defined on a mesh partition of the error-space is obtained for the constrained dynamics. As a result, the complexity of the PMSM state feedback control problem is significantly reduced. To illustrate the effectiveness of the developed synthesis method a realistic simulation scenario is considered, including a comparison with the classical PI approach.","PeriodicalId":309866,"journal":{"name":"2014 18th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134421256","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
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