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2010 11th International Workshop on Variable Structure Systems (VSS)最新文献

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A nonlinear sliding surface for discrete-time uncertain systems 离散时间不确定系统的非线性滑动曲面
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544658
B. Bandyopadhyay, Fulwani Deepak
{"title":"A nonlinear sliding surface for discrete-time uncertain systems","authors":"B. Bandyopadhyay, Fulwani Deepak","doi":"10.1109/VSS.2010.5544658","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544658","url":null,"abstract":"This paper proposes a discretization behavior of nonlinear sliding surface based algorithms. Recently nonlinear surfaces are proposed by the authors to improve transient performance of continuous and discrete-time uncertain systems. The nonlinear surface changes system's closed loop damping ratio as output approaches the setpoint. In this paper we propose a nonlinear surface for the system represented by delta operator approach which unifies our continuous-time and discrete-time results.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130641994","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
Sensorless speed control of permanent magnet synchronous motor by using sliding mode observer 滑模观测器在永磁同步电机无传感器速度控制中的应用
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544686
M. Ezzat, J. De Léon, Nicolas Gonzalez, A. Glumineau
{"title":"Sensorless speed control of permanent magnet synchronous motor by using sliding mode observer","authors":"M. Ezzat, J. De Léon, Nicolas Gonzalez, A. Glumineau","doi":"10.1109/VSS.2010.5544686","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544686","url":null,"abstract":"This paper presents a sensorless speed control for a permanent magnet synchronous motor (PMSM) combining a robust backstepping controller and a sliding mode observer based on the super twisting algorithm. Firstly, the structural property of the observability of this machine is analyzed. Then, an observer is designed in order to estimate the speed and the position of the machine from the only measurement of the currents and the voltages. A robust backstepping controller is then designed in order to track a desired speed reference under uncertainties and unmodeled dynamics. The result is obtained in spite of uncertainties in the stator resistance and stator inductance, which usually are bad known and time-varying. Simulation results are shown in the framework of an industrial benchmark to illustrate the performance of the proposed scheme with the critical case of standstill and low speed.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133556646","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: 25
Variable gains super-twisting control for wind energy conversion optimization 风电转换优化的变增益超扭转控制
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544713
C. Evangelista, P. Puleston, F. Valenciaga, A. Dávila
{"title":"Variable gains super-twisting control for wind energy conversion optimization","authors":"C. Evangelista, P. Puleston, F. Valenciaga, A. Dávila","doi":"10.1109/VSS.2010.5544713","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544713","url":null,"abstract":"An adaptive second order sliding mode control strategy is explored in this work, to maximize the energy extracted from the wind in a wind energy conversion system (WECS). It is required to such strategy to deal with the nonlinear nature of the WECS, the randomness of the wind speed, model uncertainties and external disturbances, and also with the need to reduce mechanical loads. The special features of this adaptive technique together with the robustness, relative simplicity and other desirable inherent characteristics of the super-twisting algorithm make the proposed controller an attractive solution. The suitability of the proposed strategy is proved by extensive computer aided simulations employing a comprehensive model of the system.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134645913","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: 21
On finite time observer design for multicellular converter 多蜂窝变换器有限时间观测器设计
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544717
M. Defoort, M. Djemai, T. Floquet, W. Perruquetti
{"title":"On finite time observer design for multicellular converter","authors":"M. Defoort, M. Djemai, T. Floquet, W. Perruquetti","doi":"10.1109/VSS.2010.5544717","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544717","url":null,"abstract":"The aim of this paper is to estimate the capacitor's voltages by tacking the hybrid behavior of the multicellular converter into account. A nonlinear finite time observer is given in order to solve this problem. The stability and properties of the proposed homogeneous finite time observer are studied using Lyapunov theory. Our approach enables the stabilization of the observation errors in spite of the presence of perturbations. Simulations highlight the efficiency of the proposed strategy.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122603717","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
2-sliding mode based robust control for 2-DOF helicopter 基于2滑模的二自由度直升机鲁棒控制
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544531
Q. Ahmed, A. I. Bhatti, S. Iqbal, I. H. Kazmi
{"title":"2-sliding mode based robust control for 2-DOF helicopter","authors":"Q. Ahmed, A. I. Bhatti, S. Iqbal, I. H. Kazmi","doi":"10.1109/VSS.2010.5544531","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544531","url":null,"abstract":"Mass distribution variations in helicopters cause significant adverse effects on helicopter flight. These variations are triggered by unwanted torques. These unwanted torques must be compensated for the sake of smooth and comfortable flight. This paper presents a robust control algorithm to overcome the fore-mentioned problem. The robust control algorithm is based on super twisting based 2-sliding mode control (2-SMC). This scheme offers the solution to cope with torques caused by perturbation in center of gravity (CG) and guarantees smooth flight. The idea has been successfully proven and verified by implementation on the 2-DOF helicopter.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122328643","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: 37
State observers with first-/second-order sliding-mode for nonlinear systems with bounded noises 具有有界噪声非线性系统的一/二阶滑模状态观测器
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544651
A. Alessandri, M. Cuneo, Elisabetta Punta
{"title":"State observers with first-/second-order sliding-mode for nonlinear systems with bounded noises","authors":"A. Alessandri, M. Cuneo, Elisabetta Punta","doi":"10.1109/VSS.2010.5544651","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544651","url":null,"abstract":"A full-order sliding-mode state observer for a class of nonlinear continuous-time dynamic systems is proposed and conditions for the stability of the estimation error in the absence of noises are provided. If the system is affected by bounded disturbances, under such conditions the existence of an attractive invariant set for the estimation error is ensured. The design of the observer can be made via LMI techniques. A second-order sliding-mode differentiator is introduced, which makes available the first time derivative of the measurable output in finite time. This artificially constructed measurement is exploited to reduce the invariant set of the estimation error.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121970618","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: 3
Load swing suppression in the 3-dimensional overhead crane via second-order sliding-modes 基于二阶滑动模态的三维桥式起重机载荷摆动抑制
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5545138
A. Pisano, Stefano Scodina, E. Usai
{"title":"Load swing suppression in the 3-dimensional overhead crane via second-order sliding-modes","authors":"A. Pisano, Stefano Scodina, E. Usai","doi":"10.1109/VSS.2010.5545138","DOIUrl":"https://doi.org/10.1109/VSS.2010.5545138","url":null,"abstract":"In this paper, an anti-swing control law, previously proposed for the 2-dimensional (2D, or planar) model of an overhead crane [2], is generalized to the 3-dimensional (3-D) case. The multi-input controller is based on the second-order sliding-mode approach. Thanks to specially designed sliding surfaces, explicitly depending on the load swing angles, zero steady position error and active load swing damping during the load transfer are attained by the proposed controller. The effectiveness of the proposed control method is validated by experimental results on a 3-dimensional laboratory crane prototype.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131960325","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: 31
A sliding hyperplane design method for a class of linear systems with unmatched disturbances 一类具有非匹配扰动线性系统的滑动超平面设计方法
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-26 DOI: 10.1109/VSS.2010.5544629
B. Veselić, B. Perunicic-Drazenovic, C. Milosavljevic
{"title":"A sliding hyperplane design method for a class of linear systems with unmatched disturbances","authors":"B. Veselić, B. Perunicic-Drazenovic, C. Milosavljevic","doi":"10.1109/VSS.2010.5544629","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544629","url":null,"abstract":"The paper studies sliding mode (SM) features in systems characterized by the presence of unmatched disturbances. Although it is possible to establish a SM in such systems, the unmatched part of disturbances has impact on the SM dynamics. Under these circumstances system trajectory does not converge to the origin but wanders in its neighborhood along the sliding manifold. This paper offers a sliding hyperplane design method to minimize the effects of the unmatched disturbances upon the SM dynamics, for a class of linear systems. The optimization criterion is minimization of the steady state vector norm. The suggested approach has been demonstrated on a numerical example.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120946632","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
Parameter estimation of PEMFC system with unknown input 未知输入PEMFC系统的参数估计
2010 11th International Workshop on Variable Structure Systems (VSS) Pub Date : 2010-06-01 DOI: 10.1109/VSS.2010.5544738
I. H. Kazmi, A. I. Bhatti, M. Iqbal
{"title":"Parameter estimation of PEMFC system with unknown input","authors":"I. H. Kazmi, A. I. Bhatti, M. Iqbal","doi":"10.1109/VSS.2010.5544738","DOIUrl":"https://doi.org/10.1109/VSS.2010.5544738","url":null,"abstract":"This paper presents the synthesis of a model-based robust observer with an unknown input that observes a state (manifold pressure) of Fuel Cell System (FCS) in the presence of uncertainties. Using this observer the proportionality constant of the inlet manifold orifice is estimated. Then this estimated parameter is used to calculate the time varying air mass flow. As the mass flow rates of reactant gases play a pivotal role in the reliable and efficient operation of FCS. Their precise and exact value is necessary and important for the control and diagnostics of FCS. In the particular sense of inlet manifold of fuel cell system, appropriate air mass flow is very critical for the proper maintenance of chemical reactions taking place in the cathode and anode chambers. The sliding mode observer (SMO) with super twisting algorithm is utilized for the estimation of the mass flow rate of air despite the unknown input (load current). The estimates come out to be quite close to the nominal values. The simulation results show robustness to the uncertainties and fast convergence of estimates to nominal values of the parameter. The chattering phenomenon is attenuated significantly by employing higher order sliding mode. The standard SMO results are also presented for the sake of comparison. The proposed strategy is useful for sensor reduction, fault diagnostics and control.","PeriodicalId":407705,"journal":{"name":"2010 11th International Workshop on Variable Structure Systems (VSS)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131431961","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
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