Pub Date : 2016-09-01DOI: 10.1109/IConAC.2016.7604955
Pree Thiengburanathum, S. Cang, Hongnian Yu
The number of tourists worldwide has increased rapidly. The extensive amount of information that is accessible on the Internet provides tourists with a lot of choices. However it is a difficult task for the tourists to select the right tourism products or services based on their preferences and requirements. This paper attempts to review the published studies on Travel Recommendation System (TRSs) during 2008 to 2015. The paper emphasizes the use of previous and current Information Communication Technology (ICT), its applications, possible research trends and the challenges that arise in the development of a TRS.
{"title":"Overview of personalized Travel Recommendation Systems","authors":"Pree Thiengburanathum, S. Cang, Hongnian Yu","doi":"10.1109/IConAC.2016.7604955","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604955","url":null,"abstract":"The number of tourists worldwide has increased rapidly. The extensive amount of information that is accessible on the Internet provides tourists with a lot of choices. However it is a difficult task for the tourists to select the right tourism products or services based on their preferences and requirements. This paper attempts to review the published studies on Travel Recommendation System (TRSs) during 2008 to 2015. The paper emphasizes the use of previous and current Information Communication Technology (ICT), its applications, possible research trends and the challenges that arise in the development of a TRS.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127270866","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604907
Yongping Pan, Xiang Li, Haoyong Yu
Parameter convergence is of great importance as it enhances the overall stability and robustness properties of adaptive control systems. However, a stringent persistent-excitation (PE) condition usually has to be satisfied to achieve parameter convergence in adaptive control. In this paper, a least-squares learning control strategy without regressor filtering is presented to achieve parameter convergence at the absence of the PE condition. An additional modified modeling error that utilizes online recorded data is constructed to update parametric estimates, and an integral transformation is derived to avoid the time differentiation of plant states in the computation of the modified modeling error. An indirect adaptive control law equipped with a novel filtering-free least-squares estimation is proposed to guarantee exponential convergence of both tracking errors and parameter estimation errors by an interval-excitation (IE) condition which is much weaker than the PE condition. An illustrative example has verified effectiveness of the proposed approach.
{"title":"Least-squares learning control with guaranteed parameter convergence","authors":"Yongping Pan, Xiang Li, Haoyong Yu","doi":"10.1109/IConAC.2016.7604907","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604907","url":null,"abstract":"Parameter convergence is of great importance as it enhances the overall stability and robustness properties of adaptive control systems. However, a stringent persistent-excitation (PE) condition usually has to be satisfied to achieve parameter convergence in adaptive control. In this paper, a least-squares learning control strategy without regressor filtering is presented to achieve parameter convergence at the absence of the PE condition. An additional modified modeling error that utilizes online recorded data is constructed to update parametric estimates, and an integral transformation is derived to avoid the time differentiation of plant states in the computation of the modified modeling error. An indirect adaptive control law equipped with a novel filtering-free least-squares estimation is proposed to guarantee exponential convergence of both tracking errors and parameter estimation errors by an interval-excitation (IE) condition which is much weaker than the PE condition. An illustrative example has verified effectiveness of the proposed approach.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"11 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123667395","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604908
M. Bowkett, K. Thanapalan, Jonathan G. Williams
This paper presents a review and analysis of failure detection methods of composites materials systems and development and application of a bamboo bicycle. The paper begins by presenting the current market condition of composites materials and in particular, carbon fibre and carbon fibre reinforced plastic (CFRF). The work proceeds to investigate the failure detection methods that have been applied to develop a carbon fibre bicycle with reference to a bamboo bicycle.
{"title":"Review and analysis of failure detection methods of composites materials systems","authors":"M. Bowkett, K. Thanapalan, Jonathan G. Williams","doi":"10.1109/IConAC.2016.7604908","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604908","url":null,"abstract":"This paper presents a review and analysis of failure detection methods of composites materials systems and development and application of a bamboo bicycle. The paper begins by presenting the current market condition of composites materials and in particular, carbon fibre and carbon fibre reinforced plastic (CFRF). The work proceeds to investigate the failure detection methods that have been applied to develop a carbon fibre bicycle with reference to a bamboo bicycle.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122101346","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604940
Han Zhang, Z. Lang, Yunpeng Zhu
The Nonlinear Output Frequency Response Functions (NOFRFs) are concepts proposed for the frequency analysis of nonlinear systems, and they have been essential for applications of damage detection in mechanical and civil engineering, etc. Although they have been evaluated by the Least-Square method and the associated linear equations based method, there is little research about the comparative study of these two methods. This paper describes the comparative study of the LS method and the ALEs based method in an application of the NOFRFs based mechanical damage detection. The two methods are respectively introduced and employed to evaluate the NOFRFs, which are capable of indicating the growth of damage in the mechanical system; then, the two methods are compared using the damage evolution results of the corresponding NOFRFs. A series of comparative experiments with different system input amplitudes are carried out. The experiment results expose limitations of both methods for the NOFRFs based damage detection.
{"title":"A comparative study on the evaluation of Nonlinear Output Frequency Response Functions (NOFRFs) of nonlinear systems","authors":"Han Zhang, Z. Lang, Yunpeng Zhu","doi":"10.1109/IConAC.2016.7604940","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604940","url":null,"abstract":"The Nonlinear Output Frequency Response Functions (NOFRFs) are concepts proposed for the frequency analysis of nonlinear systems, and they have been essential for applications of damage detection in mechanical and civil engineering, etc. Although they have been evaluated by the Least-Square method and the associated linear equations based method, there is little research about the comparative study of these two methods. This paper describes the comparative study of the LS method and the ALEs based method in an application of the NOFRFs based mechanical damage detection. The two methods are respectively introduced and employed to evaluate the NOFRFs, which are capable of indicating the growth of damage in the mechanical system; then, the two methods are compared using the damage evolution results of the corresponding NOFRFs. A series of comparative experiments with different system input amplitudes are carried out. The experiment results expose limitations of both methods for the NOFRFs based damage detection.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116737681","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604894
Yuanlin Gu, Hua-Liang Wei
This study aims to analyse the relationship between lifestyle and life satisfaction in the UK using a class of transparent and nonlinear parametric models, based on which the dependency of the response variable (happiness or life satisfaction) on a set of independent (or explanatory) variables relating to life styles can easily be interpreted. A forward regression orthogonal least square (FROLS) algorithm, initially developed in control and systems engineering area, is employed to build the transparent models. Based on over 10000 surveyed samples with 42 variables from UK Understanding Society Data, a number of significant variables of lifestyle have been selected first according to the rank of their contribution to explaining life satisfaction. As an example, a reduced simple nonlinear model with only 12 model terms is presented. This model is meaningful in that it provides a parsimonious representation of the relationship between happiness and lifestyle, reveals how life satisfaction quantitatively depends on lifestyle, and how the lifestyle variables interactively affect life satisfaction.
{"title":"Analysis of the relationship between lifestyle and life satisfaction using transparent and nonlinear parametric models","authors":"Yuanlin Gu, Hua-Liang Wei","doi":"10.1109/IConAC.2016.7604894","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604894","url":null,"abstract":"This study aims to analyse the relationship between lifestyle and life satisfaction in the UK using a class of transparent and nonlinear parametric models, based on which the dependency of the response variable (happiness or life satisfaction) on a set of independent (or explanatory) variables relating to life styles can easily be interpreted. A forward regression orthogonal least square (FROLS) algorithm, initially developed in control and systems engineering area, is employed to build the transparent models. Based on over 10000 surveyed samples with 42 variables from UK Understanding Society Data, a number of significant variables of lifestyle have been selected first according to the rank of their contribution to explaining life satisfaction. As an example, a reduced simple nonlinear model with only 12 model terms is presented. This model is meaningful in that it provides a parsimonious representation of the relationship between happiness and lifestyle, reveals how life satisfaction quantitatively depends on lifestyle, and how the lifestyle variables interactively affect life satisfaction.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124058179","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604888
Lifeng Ma, Zidong Wang, Yuan Yuan
This paper deals with the consensus control problem for a class of discrete time-varying stochastic multi-agent systems with stochastic nonlinearities and deception attacks. A novel definition of quasi-consensus is proposed to reflect the consensus process where, at each time instant, all the agents are constrained to stay within a certain ellipsoidal region. The measurement output available for the controller is not only from the individual agent itself but also from its neighboring ones according to the given topology. A new deception attack model is proposed, where the attack signals are injected by the adversary to the measurement data during the process of information transmission via the communication network. By using a set of recursive matrix inequalities, sufficient conditions are derived for the existence of the desired control scheme for achieving the quasi-consensus. Subsequently, an optimization problem is formulated to seek the locally best consensus performance.
{"title":"Consensus control for nonlinear multi-agent systems subject to deception attacks","authors":"Lifeng Ma, Zidong Wang, Yuan Yuan","doi":"10.1109/IConAC.2016.7604888","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604888","url":null,"abstract":"This paper deals with the consensus control problem for a class of discrete time-varying stochastic multi-agent systems with stochastic nonlinearities and deception attacks. A novel definition of quasi-consensus is proposed to reflect the consensus process where, at each time instant, all the agents are constrained to stay within a certain ellipsoidal region. The measurement output available for the controller is not only from the individual agent itself but also from its neighboring ones according to the given topology. A new deception attack model is proposed, where the attack signals are injected by the adversary to the measurement data during the process of information transmission via the communication network. By using a set of recursive matrix inequalities, sufficient conditions are derived for the existence of the desired control scheme for achieving the quasi-consensus. Subsequently, an optimization problem is formulated to seek the locally best consensus performance.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133176692","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604959
Xin Wang, Wei Wang, Yerong Zhang, Kexin Sun, Lvping Li
Analysis of fuel consumption on orbit satellite is presented. The fuel consumption model is nonlinear based on the orbit thruster and attitude control thrusters' misalignment, and is assumed to have unknown dynamics. The issue regarding as the fuel consumption of orbit optimization can be converted to multi-variable optimization with constraint. A modification of the Analytic Hierarchy Process (AHP) optimization algorithm is introduced, by which the fuel consumption estimation models and judgment matrix are established. Simulation results are presented and the optimization design criterion for AHP is also put forward.
{"title":"On orbit satellite fuel consumption optimization with Analytic Hierarchy Process method","authors":"Xin Wang, Wei Wang, Yerong Zhang, Kexin Sun, Lvping Li","doi":"10.1109/IConAC.2016.7604959","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604959","url":null,"abstract":"Analysis of fuel consumption on orbit satellite is presented. The fuel consumption model is nonlinear based on the orbit thruster and attitude control thrusters' misalignment, and is assumed to have unknown dynamics. The issue regarding as the fuel consumption of orbit optimization can be converted to multi-variable optimization with constraint. A modification of the Analytic Hierarchy Process (AHP) optimization algorithm is introduced, by which the fuel consumption estimation models and judgment matrix are established. Simulation results are presented and the optimization design criterion for AHP is also put forward.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132068263","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604945
Salma Elkawafi, A. Khalil, Anass Ibrahim Elgaiyar, Jihong Wang
Load frequency control systems used to rely on dedicated communication links. The deregulation of the electricity market and the emergence of the Microgrids and Smartgrids made the open communication infrastructure an exigent need for future power system. In this case the load frequency control signals will be exchanged through communication network. The communication network is characterized by variable time delay which may lead to system instability. This paper investigates the stability of load frequency control system in islanded micro-grid with the presence of the time delay. The stability analysis is based on solving a set of linear matrix inequalities. Also, the effects of the controller gains and time delay variation rate on the maximum allowable delay bound are investigated.
{"title":"Delay-dependent stability of LFC in Microgrid with varying time delays","authors":"Salma Elkawafi, A. Khalil, Anass Ibrahim Elgaiyar, Jihong Wang","doi":"10.1109/IConAC.2016.7604945","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604945","url":null,"abstract":"Load frequency control systems used to rely on dedicated communication links. The deregulation of the electricity market and the emergence of the Microgrids and Smartgrids made the open communication infrastructure an exigent need for future power system. In this case the load frequency control signals will be exchanged through communication network. The communication network is characterized by variable time delay which may lead to system instability. This paper investigates the stability of load frequency control system in islanded micro-grid with the presence of the time delay. The stability analysis is based on solving a set of linear matrix inequalities. Also, the effects of the controller gains and time delay variation rate on the maximum allowable delay bound are investigated.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133597856","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 : 2016-09-01DOI: 10.1109/ICONAC.2016.7604900
Qiang Liu, Ruihao Li, Huosheng Hu, Dongbing Gu
Millions of people in the world suffer from vision impairment or even vision loss. Guide sticks and dogs have been deployed to lead them around various obstacles. However, both of them are not capable of interacting with human users who normally rely on conceptual knowledge or semantic contents of the environment. This paper first builds a 3D semantic indoor environment map with an RGB-D sensor. Then, the map is used for room recognition during the revisits based on appearance by applying a convolutional neural network. Representative objects extracted from the semantic map are used to diagnose and eliminate errors during room recognition. The proposed method result in a 97.8% accuracy even with lighting condition and small object location changes.
{"title":"Using semantic maps for room recognition to aid visually impaired people","authors":"Qiang Liu, Ruihao Li, Huosheng Hu, Dongbing Gu","doi":"10.1109/ICONAC.2016.7604900","DOIUrl":"https://doi.org/10.1109/ICONAC.2016.7604900","url":null,"abstract":"Millions of people in the world suffer from vision impairment or even vision loss. Guide sticks and dogs have been deployed to lead them around various obstacles. However, both of them are not capable of interacting with human users who normally rely on conceptual knowledge or semantic contents of the environment. This paper first builds a 3D semantic indoor environment map with an RGB-D sensor. Then, the map is used for room recognition during the revisits based on appearance by applying a convolutional neural network. Representative objects extracted from the semantic map are used to diagnose and eliminate errors during room recognition. The proposed method result in a 97.8% accuracy even with lighting condition and small object location changes.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116507544","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 : 2016-09-01DOI: 10.1109/IConAC.2016.7604912
Qinyuan Liu, Zidong Wang, Weibo Liu, Wenshuo Li
This paper investigates the remote state estimation problems for a class of linear discrete-time systems. An event-triggered scheme that schedules the transmissions between the sensor and the remote estimator is introduced so as to preserve the network resources. The communication process is assumed to suffer from the missing measurement phenomenon described by a Bernoulli distribution. Additionally, the random estimator gain perturbations are considered in the realization of state estimation problems. To deal with such issues, we propose an event-triggered resilient filter algorithm. Note that the analytical expressions of the error covariance of the proposed filter cannot be computed directly. Consequently, we construct its upper bound as an alternative and subsequently design the suboptimal filter gains in order that such a bound is minimized at each step. The effectiveness of the proposed filtering algorithm is illustrated by a numerical simulation.
{"title":"Event-triggered resilient filtering with missing measurements","authors":"Qinyuan Liu, Zidong Wang, Weibo Liu, Wenshuo Li","doi":"10.1109/IConAC.2016.7604912","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604912","url":null,"abstract":"This paper investigates the remote state estimation problems for a class of linear discrete-time systems. An event-triggered scheme that schedules the transmissions between the sensor and the remote estimator is introduced so as to preserve the network resources. The communication process is assumed to suffer from the missing measurement phenomenon described by a Bernoulli distribution. Additionally, the random estimator gain perturbations are considered in the realization of state estimation problems. To deal with such issues, we propose an event-triggered resilient filter algorithm. Note that the analytical expressions of the error covariance of the proposed filter cannot be computed directly. Consequently, we construct its upper bound as an alternative and subsequently design the suboptimal filter gains in order that such a bound is minimized at each step. The effectiveness of the proposed filtering algorithm is illustrated by a numerical simulation.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124449243","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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