Pub Date : 2013-11-01DOI: 10.1109/AUCC.2013.6697323
Yu Pan, H. Amini, Z. Miao, J. Gough, V. Ugrinovskii, M. James
Stability of quantum Markov systems is investigated in terms of stability of invariant states. Evolutions of a quantum system in the Heisenberg picture are considered which are modeled in terms of a quantum stochastic differential equation. Using a Markov operator semigroup associated with this quantum stochastic differential equation, we derive sufficient conditions for the existence and stability of a unique and faithful invariant quantum state. The conditions are formulated in terms of algebraic constraints suitable for engineering quantum systems to be used in coherent feedback networks. To derive these conditions, we use quantum analogues of the stochastic Lyapunov stability theory.
{"title":"Stability of quantum Markov systems via Lyapunov methods in the Heisenberg picture","authors":"Yu Pan, H. Amini, Z. Miao, J. Gough, V. Ugrinovskii, M. James","doi":"10.1109/AUCC.2013.6697323","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697323","url":null,"abstract":"Stability of quantum Markov systems is investigated in terms of stability of invariant states. Evolutions of a quantum system in the Heisenberg picture are considered which are modeled in terms of a quantum stochastic differential equation. Using a Markov operator semigroup associated with this quantum stochastic differential equation, we derive sufficient conditions for the existence and stability of a unique and faithful invariant quantum state. The conditions are formulated in terms of algebraic constraints suitable for engineering quantum systems to be used in coherent feedback networks. To derive these conditions, we use quantum analogues of the stochastic Lyapunov stability theory.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115390822","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697296
Vlatko Cuculoski
The fast changing pace of electronic and control systems dictates the necessity to start planning for asset obsolescence at early stages of the asset lifecycle. Monitoring and managing the obsolescence following a planned strategy through the asset lifecycle, will achieve cost effective long term system availability and reliability. Activities such as life of type purchases, special order manufacturing or stepping up the maintenance, individually, will not eliminate the long term obsolescence problems. Obsolescence management strategy has to include all of these but also must be flexible, versatile and be able to offer multiple paths to achieve the ultimate goal: cost effective sustainment of an asset without compromising the asset capability, availability and reliability. Obsolescence management strategy also has to be flexible enough to accommodate for possible future changes in the capability requirements. Unfortunately not many assets have a developed obsolescence management strategy until they are affected by obsolescence. For these reasons, steps presented in this paper were developed to assist with the asset support and to provide methodology for proactive obsolescence management. This approach may also encourage the asset owners to take the necessary steps early, before the inevitable obsolescence strikes again.
{"title":"Obsolescence management of electronic and control systems","authors":"Vlatko Cuculoski","doi":"10.1109/AUCC.2013.6697296","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697296","url":null,"abstract":"The fast changing pace of electronic and control systems dictates the necessity to start planning for asset obsolescence at early stages of the asset lifecycle. Monitoring and managing the obsolescence following a planned strategy through the asset lifecycle, will achieve cost effective long term system availability and reliability. Activities such as life of type purchases, special order manufacturing or stepping up the maintenance, individually, will not eliminate the long term obsolescence problems. Obsolescence management strategy has to include all of these but also must be flexible, versatile and be able to offer multiple paths to achieve the ultimate goal: cost effective sustainment of an asset without compromising the asset capability, availability and reliability. Obsolescence management strategy also has to be flexible enough to accommodate for possible future changes in the capability requirements. Unfortunately not many assets have a developed obsolescence management strategy until they are affected by obsolescence. For these reasons, steps presented in this paper were developed to assist with the asset support and to provide methodology for proactive obsolescence management. This approach may also encourage the asset owners to take the necessary steps early, before the inevitable obsolescence strikes again.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131277534","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697313
M. Imran, A. Ghafoor, S. Akram, V. Sreeram
Limited frequency interval Gramians based model reduction technique for generalized nonsingular systems is presented. The technique extends results of existing limited frequency interval Gramians schemes for standard systems. Numerical examples are also included.
{"title":"Limited frequency interval Gramians based model reduction for nonsingular generalized systems","authors":"M. Imran, A. Ghafoor, S. Akram, V. Sreeram","doi":"10.1109/AUCC.2013.6697313","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697313","url":null,"abstract":"Limited frequency interval Gramians based model reduction technique for generalized nonsingular systems is presented. The technique extends results of existing limited frequency interval Gramians schemes for standard systems. Numerical examples are also included.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121741543","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697265
Yunliang Wei, W. Zheng
This paper deals with the problems of finite-time boundedness and stabilization for discrete-time nonlinear quadratic systems. Some sufficient conditions are derived, under which the finite-time boundedness of nonlinear quadratic systems is guaranteed. By using a similar method, the finite-time stability for discrete-time nonlinear quadratic systems is also established as a corollary. Moreover, to solve the finite-time stabilization problem, a stabilizing state feedback controller is designed. A simulation example is provided to illustrate the efficiency of the proposed technique.
{"title":"Finite-time boundedness and stabilization of discrete-time nonlinear quadratic systems","authors":"Yunliang Wei, W. Zheng","doi":"10.1109/AUCC.2013.6697265","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697265","url":null,"abstract":"This paper deals with the problems of finite-time boundedness and stabilization for discrete-time nonlinear quadratic systems. Some sufficient conditions are derived, under which the finite-time boundedness of nonlinear quadratic systems is guaranteed. By using a similar method, the finite-time stability for discrete-time nonlinear quadratic systems is also established as a corollary. Moreover, to solve the finite-time stabilization problem, a stabilizing state feedback controller is designed. A simulation example is provided to illustrate the efficiency of the proposed technique.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123728282","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697304
Kuan Waey Lee, W. Moase, C. Manzie, N. Hutchins, A. Ooi, J. Vethecan, P. Riseborough
Optimisation of aerodynamic shapes using computational fluid dynamics approaches has been successfully applied over a number of years, however the typical optimisation approaches employed utilise gradient algorithms that guarantee only local optimality of the solution. While numerous global optimisation techniques exist, they are usually too time consuming in practice. In this paper we show that interpreting the convergence of computational fluid dynamics solvers as plant dynamics allows recent results in global extremum seeking to be deployed. This alleviates the computational burden of requiring full convergence of the computation fluid dynamics solver. The approach is demonstrated on a simple example involving drag minimisation on a NACA aerofoil.
{"title":"Is there a need for fully converged CFD solutions? Global extremum seeking applied to aerodynamic shape optimisation","authors":"Kuan Waey Lee, W. Moase, C. Manzie, N. Hutchins, A. Ooi, J. Vethecan, P. Riseborough","doi":"10.1109/AUCC.2013.6697304","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697304","url":null,"abstract":"Optimisation of aerodynamic shapes using computational fluid dynamics approaches has been successfully applied over a number of years, however the typical optimisation approaches employed utilise gradient algorithms that guarantee only local optimality of the solution. While numerous global optimisation techniques exist, they are usually too time consuming in practice. In this paper we show that interpreting the convergence of computational fluid dynamics solvers as plant dynamics allows recent results in global extremum seeking to be deployed. This alleviates the computational burden of requiring full convergence of the computation fluid dynamics solver. The approach is demonstrated on a simple example involving drag minimisation on a NACA aerofoil.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132214950","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697249
Xianwei Li, Huijun Gao, Changbin Yu
This paper is concerned with the issue of noise shaping of delta-sigma modulators. The shaped noise transfer function (NTF) is assumed to have infinite impulse response (IIR), and the optimization objective is minimizing the maximum magnitude of the NTF over the signal frequency band. By virtue of the generalized Kalman-Yakubovich-Popov lemma, the optimization of NTFs is converted into a minimization problem subject to quadratic matrix inequalities, and then an iterative linear matrix inequality algorithm is proposed to solve this alternative minimization problem. The proposed result overcomes the limitation of a latest method that can deal with NTFs with finite impulse response only. A design example is provided to demonstrate that the proposed design method has an advantage over the benchmark one in improving the signal-to-noise ratio.
{"title":"An iterative LMI approach to IIR noise transfer function optimization for delta-sigma modulators","authors":"Xianwei Li, Huijun Gao, Changbin Yu","doi":"10.1109/AUCC.2013.6697249","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697249","url":null,"abstract":"This paper is concerned with the issue of noise shaping of delta-sigma modulators. The shaped noise transfer function (NTF) is assumed to have infinite impulse response (IIR), and the optimization objective is minimizing the maximum magnitude of the NTF over the signal frequency band. By virtue of the generalized Kalman-Yakubovich-Popov lemma, the optimization of NTFs is converted into a minimization problem subject to quadratic matrix inequalities, and then an iterative linear matrix inequality algorithm is proposed to solve this alternative minimization problem. The proposed result overcomes the limitation of a latest method that can deal with NTFs with finite impulse response only. A design example is provided to demonstrate that the proposed design method has an advantage over the benchmark one in improving the signal-to-noise ratio.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133357958","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697307
A. Wu, G. Duan, Wanquan Liu, V. Sreeram
In this paper, the discrete-time antilinear systems are investigated. Firstly, a closed-form expression for the state response of discrete-time antilinear systems is established. Secondly, the concepts of reachability and controllability are proposed for discrete-time antilinear systems. With the closed-form expression of the state reponse as tools, anti-Gram criteria for reachability are given. In addition, a matrix rank criteria for reachability and controllability is given for time-invariant antilinear systems. In addition, an anti-Lyapnov equation approach is given to check the stability of the time-invariant antilinear systems.
{"title":"Controllability and stability of discrete-time antilinear systems","authors":"A. Wu, G. Duan, Wanquan Liu, V. Sreeram","doi":"10.1109/AUCC.2013.6697307","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697307","url":null,"abstract":"In this paper, the discrete-time antilinear systems are investigated. Firstly, a closed-form expression for the state response of discrete-time antilinear systems is established. Secondly, the concepts of reachability and controllability are proposed for discrete-time antilinear systems. With the closed-form expression of the state reponse as tools, anti-Gram criteria for reachability are given. In addition, a matrix rank criteria for reachability and controllability is given for time-invariant antilinear systems. In addition, an anti-Lyapnov equation approach is given to check the stability of the time-invariant antilinear systems.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132430822","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697273
S. Das, H. Pota, I. Petersen
An analytical framework to examine the finite-gain stability for a positive feedback interconnection between two stable, linear time-invariant systems where one system has “mixed” passivity, negative-imaginary and small-gain properties and the other system has “mixed” negative-imaginary, negative-passivity, and small-gain properties is proposed. A classical Nyquist argument is used to examine the stability of the interconnected systems and the usefulness of the proposed framework is illustrated by a numerical example.
{"title":"Stability analysis for interconnected systems with “mixed” passivity, negative-imaginary and small-gain properties","authors":"S. Das, H. Pota, I. Petersen","doi":"10.1109/AUCC.2013.6697273","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697273","url":null,"abstract":"An analytical framework to examine the finite-gain stability for a positive feedback interconnection between two stable, linear time-invariant systems where one system has “mixed” passivity, negative-imaginary and small-gain properties and the other system has “mixed” negative-imaginary, negative-passivity, and small-gain properties is proposed. A classical Nyquist argument is used to examine the stability of the interconnected systems and the usefulness of the proposed framework is illustrated by a numerical example.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121154237","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697298
X. Chen, Liuping Wang
When using a linear controller for controlling a non-linear system, the controller is most effective when the system is working near the operating conditions. This paper proposes a model predictive controller with cascaded structure, which has the ability to maintain the state variables within the vicinity of a given operating condition by imposing operational constraints. The controller is validated on the quadrotor position control problem and shows satisfactory performance.
{"title":"Cascaded model predictive control of a quadrotor UAV","authors":"X. Chen, Liuping Wang","doi":"10.1109/AUCC.2013.6697298","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697298","url":null,"abstract":"When using a linear controller for controlling a non-linear system, the controller is most effective when the system is working near the operating conditions. This paper proposes a model predictive controller with cascaded structure, which has the ability to maintain the state variables within the vicinity of a given operating condition by imposing operational constraints. The controller is validated on the quadrotor position control problem and shows satisfactory performance.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122630824","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 : 2013-11-01DOI: 10.1109/AUCC.2013.6697320
B. Piriyanont, S. Moheimani, A. Bazaei
This paper presents design and control of a MEMS micro-gripper with integrated electro-thermal force sensor. Due to the small foot-print of the sensor, it leads to a smaller size device, and a larger and more stable gripping force due to more space allocated for actuation. A nonlinear analytical model is generated to predict the gripping arm static characteristics. The model shows significant consistency with the experimental data. System identification was performed using an experimental step response data. A feedback loop with integrator is implemented to measure and track the desired gripping force. The Pick-and-Place operations on a 85 μm micro-bead are carried out using the fabricated gripper as the end effector. The experimental results show that the micro-gripper can successfully grasp and release the micro-object while tunning the gripping force in real time.
{"title":"Design and control of a MEMS micro-gripper with integrated electro-thermal force sensor","authors":"B. Piriyanont, S. Moheimani, A. Bazaei","doi":"10.1109/AUCC.2013.6697320","DOIUrl":"https://doi.org/10.1109/AUCC.2013.6697320","url":null,"abstract":"This paper presents design and control of a MEMS micro-gripper with integrated electro-thermal force sensor. Due to the small foot-print of the sensor, it leads to a smaller size device, and a larger and more stable gripping force due to more space allocated for actuation. A nonlinear analytical model is generated to predict the gripping arm static characteristics. The model shows significant consistency with the experimental data. System identification was performed using an experimental step response data. A feedback loop with integrator is implemented to measure and track the desired gripping force. The Pick-and-Place operations on a 85 μm micro-bead are carried out using the fabricated gripper as the end effector. The experimental results show that the micro-gripper can successfully grasp and release the micro-object while tunning the gripping force in real time.","PeriodicalId":177490,"journal":{"name":"2013 Australian Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125128347","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：