International Journal of Applied Mathematics and Computer Sciences最新文献_第7页

A multivariable multiobjective predictive controller 一种多变量多目标预测控制器

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0004

F. B. Aicha, F. Bouani, M. Ksouri

{"title":"A multivariable multiobjective predictive controller","authors":"F. B. Aicha, F. Bouani, M. Ksouri","doi":"10.2478/amcs-2013-0004","DOIUrl":"https://doi.org/10.2478/amcs-2013-0004","url":null,"abstract":"Predictive control of MIMO processes is a challenging problem which requires the specification of a large number of tuning parameters (the prediction horizon, the control horizon and the cost weighting factor). In this context, the present paper compares two strategies to design a supervisor of the Multivariable Generalized Predictive Controller (MGPC), based on multiobjective optimization. Thus, the purpose of this work is the automatic adjustment of the MGPC synthesis by simultaneously minimizing a set of closed loop performances (the overshoot and the settling time for each output of the MIMO system). First, we adopt the Weighted Sum Method (WSM), which is an aggregative method combined with a Genetic Algorithm (GA) used to minimize a single criterion generated by the WSM. Second, we use the Non- Dominated Sorting Genetic Algorithm II (NSGA-II) as a Pareto method and we compare the results of both the methods. The performance of the two strategies in the adjustment of multivariable predictive control is illustrated by a simulation example. The simulation results confirm that a multiobjective, Pareto-based GA search yields a better performance than a single objective GA.","PeriodicalId":253470,"journal":{"name":"International Journal of Applied Mathematics and Computer Sciences","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114665191","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: 18

An autonomous vehicle sequencing problem at intersections: A genetic algorithm approach 交叉口自动驾驶车辆排序问题:遗传算法方法

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0015

Fei Yan, M. Dridi, A. E. Moudni

{"title":"An autonomous vehicle sequencing problem at intersections: A genetic algorithm approach","authors":"Fei Yan, M. Dridi, A. E. Moudni","doi":"10.2478/amcs-2013-0015","DOIUrl":"https://doi.org/10.2478/amcs-2013-0015","url":null,"abstract":"This paper addresses a vehicle sequencing problem for adjacent intersections under the framework of Autonomous Intersection Management (AIM). In the context of AIM, autonomous vehicles are considered to be independent individuals and the traffic control aims at deciding on an efficient vehicle passing sequence. Since there are considerable vehicle passing combinations, how to find an efficient vehicle passing sequence in a short time becomes a big challenge, especially for more than one intersection. In this paper, we present a technique for combining certain vehicles into some basic groups with reference to some properties discussed in our earlier works. A genetic algorithm based on these basic groups is designed to find an optimal or a near-optimal vehicle passing sequence for each intersection. Computational experiments verify that the proposed genetic algorithms can response quickly for several intersections. Simulations with continuous vehicles are carried out with application of the proposed algorithm or existing traffic control methods. The results show that the traffic condition can be significantly improved by our algorithm.","PeriodicalId":253470,"journal":{"name":"International Journal of Applied Mathematics and Computer Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126310895","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: 45

Actuator fault diagnosis for flat systems: A constraint satisfaction approach 平面系统执行机构故障诊断:约束满足方法

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0014

Ramatou Seydou, T. Raïssi, A. Zolghadri, D. Efimov

引用次数: 14

Stability of softly switched multiregional dynamic output controllers with a static antiwindup filter: A discrete-time case 带静态反绕组滤波器的软开关多区域动态输出控制器的稳定性:离散时间情况

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0006

T. Zubowicz, M. Brdys

引用次数: 5

Mode set focused hybrid estimation 聚焦模式集的混合估计

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0011

T. Rienmüller, M. Hofbaur, L. Travé-Massuyès, Mehdi Bayoudh

{"title":"Mode set focused hybrid estimation","authors":"T. Rienmüller, M. Hofbaur, L. Travé-Massuyès, Mehdi Bayoudh","doi":"10.2478/amcs-2013-0011","DOIUrl":"https://doi.org/10.2478/amcs-2013-0011","url":null,"abstract":"Estimating the state of a hybrid system means accounting for the mode of operation or failure and the current state of the continuously valued entities concurrently. Existing hybrid estimation schemes try to overcome the problem of an exponentially growing number of possible mode-sequence/continuous-state combinations by merging hypotheses and/or deducing likelihood measures to identify tractable sets of the most likely hypotheses. However, they still suffer from unnecessarily high computational costs as the number of possible modes increases. Hybrid diagnosis schemes, on the other hand, estimate the current mode of operation/failure only, thus leaving the continuous evolution of the system implicit. This paper proposes a novel scheme that uses a combination of both the approaches in order to define posterior transition probabilities between the specified modes of the hybrid system, hence focusing better on relevant hypotheses. In order to demonstrate the effectiveness of the proposed method, the algorithm is applied to a satellite attitude control system and compared with existing hybrid estimation/diagnosis schemes, such as the Interacting Multiple Model (IMM) algorithm, a purely parity based method (HyDiag), and an existing hybrid Mode Estimation (hME) algorithm.","PeriodicalId":253470,"journal":{"name":"International Journal of Applied Mathematics and Computer Sciences","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124667390","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: 12

Linear adaptive structure for control of a nonlinear MIMO dynamic plant 非线性MIMO动态对象控制的线性自适应结构

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0005

S. Banka, P. Dworak, K. Jaroszewski

{"title":"Linear adaptive structure for control of a nonlinear MIMO dynamic plant","authors":"S. Banka, P. Dworak, K. Jaroszewski","doi":"10.2478/amcs-2013-0005","DOIUrl":"https://doi.org/10.2478/amcs-2013-0005","url":null,"abstract":"In the paper an adaptive linear control system structure with modal controllers for a MIMO nonlinear dynamic process is presented and various methods for synthesis of those controllers are analyzed. The problems under study are exemplified by the synthesis of a position and yaw angle control system for a drillship described by a 3DOF nonlinear mathematical model of low-frequency motions made by the drillship over the drilling point. In the proposed control system, use is made of a set of (stable) linear modal controllers that create a linear adaptive controller with variable parameters tuned appropriately to operation conditions chosen on the basis of two measured auxiliary signals. These are the ship’s current forward speed measured in reference to the water and the systematically calculated difference between the course angle and the sea current (yaw angle). The system synthesis is carried out by means of four different methods for system pole placement after having linearized the model of low-frequency motions made by the vessel at its nominal “operating points” in steady states that are dependent on the specified yaw angle and the sea current velocity. The final part of the paper includes simulation results of system operation with an adaptive controller of (stepwise) varying parameters along with conclusions and final remarks.","PeriodicalId":253470,"journal":{"name":"International Journal of Applied Mathematics and Computer Sciences","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131570202","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: 20

Scheduling problems with a common due window assignment: A survey 具有公共到期窗口分配的调度问题:调查

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0018

A. Janiak, Tomasz Kwiatkowski, M. Lichtenstein

引用次数: 16

A nonlinear dynamic inversion-based neurocontroller for unmanned combat aerial vehicles during aerial refuelling 基于非线性动态反演的无人作战飞行器空中加油神经控制器

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0007

J. Pedro, Aarti Panday, L. Dala

{"title":"A nonlinear dynamic inversion-based neurocontroller for unmanned combat aerial vehicles during aerial refuelling","authors":"J. Pedro, Aarti Panday, L. Dala","doi":"10.2478/amcs-2013-0007","DOIUrl":"https://doi.org/10.2478/amcs-2013-0007","url":null,"abstract":"The paper presents the development of modelling and control strategies for a six-degree-of-freedom, unmanned combat aerial vehicle with the inclusion of the centre of gravity position travel during the straight-leg part of an in-flight refuelling manoeuvre. The centre of gravity position travel is found to have a parabolic variation with an increasing mass of aircraft. A nonlinear dynamic inversion-based neurocontroller is designed for the process under investigation. Three radial basis function neural networks are exploited in order to invert the dynamics of the system, one for each control channel. Modal and time-domain analysis results show that the dynamic properties of the aircraft are strongly influenced during aerial refuelling. The effectiveness of the proposed control law is demonstrated through the use of simulation results for an F-16 aircraft. The longitudinal neurocontroller provided interesting results, and performed better than a baseline nonlinear dynamic inversion controller without neural network. On the other hand, the lateral-directional nonlinear dynamic inversion-based neurocontroller did not perform well as the longitudinal controller. It was concluded that the nonlinear dynamic inversion-based neurocontroller could be applied to control an unmanned combat aerial vehicle during aerial refuelling.","PeriodicalId":253470,"journal":{"name":"International Journal of Applied Mathematics and Computer Sciences","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116002581","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: 38

An efficient algorithm for estimating the parameters of superimposed exponential signals in multiplicative and additive noise 一种在乘性和加性噪声中估计叠加指数信号参数的有效算法

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0010

J. Bian, Huiming Peng, Jing Xing, Zhihui Liu, Hongwei Li

引用次数: 3

An unscented Kalman filter in designing dynamic GMDH neural networks for robust fault detection 无气味卡尔曼滤波器在动态GMDH神经网络鲁棒检测中的应用

International Journal of Applied Mathematics and Computer Sciences Pub Date : 2013-03-01 DOI: 10.2478/amcs-2013-0013

M. Mrugalski

引用次数: 90