Pub Date : 2013-06-12DOI: 10.1109/ICCA.2013.6565173
Li Zhang, Shijian Li, Gang Pan
Current context-aware systems often model rigid inference rules for limited user contexts, which constrain their effectiveness in real world usage. In order to achieve flexible context-aware inference, a commonsense knowledge base is essential. But such knowledge base is hard to construct manually. This paper proposes some automatic algorithms to extract commonsense directly from text corpuses. We evaluate the extraction algorithms with comparison with human annotators. We also evaluate the effectiveness of the knowledge base in practical context-awareness inference.
{"title":"Building a commonsense knowledge base for context-awareness inference","authors":"Li Zhang, Shijian Li, Gang Pan","doi":"10.1109/ICCA.2013.6565173","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565173","url":null,"abstract":"Current context-aware systems often model rigid inference rules for limited user contexts, which constrain their effectiveness in real world usage. In order to achieve flexible context-aware inference, a commonsense knowledge base is essential. But such knowledge base is hard to construct manually. This paper proposes some automatic algorithms to extract commonsense directly from text corpuses. We evaluate the extraction algorithms with comparison with human annotators. We also evaluate the effectiveness of the knowledge base in practical context-awareness inference.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128294570","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565170
Huiyu Jin, Hongfei Sun
The problem of how to reduce the error of sampled-data nonlinear observers is investigated. A two-step design approach is proposed, in which the feedback term of observer is designed in continuous-time while an accurate numerical approach is used to estimate the state at next sampling instance. Main theorem is proved to guarantee that the observer error decays to and remains in a bounded ball contains the origin and the bound can be controlled by the numerical approach. Compared with approximate discrete-time design method, the two-step approach can have the same observer precision while the design is relatively easy because the continuous-time design methods can be used directly.
{"title":"Reducing the error of sampled-data nonlinear observers with numerical approaches","authors":"Huiyu Jin, Hongfei Sun","doi":"10.1109/ICCA.2013.6565170","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565170","url":null,"abstract":"The problem of how to reduce the error of sampled-data nonlinear observers is investigated. A two-step design approach is proposed, in which the feedback term of observer is designed in continuous-time while an accurate numerical approach is used to estimate the state at next sampling instance. Main theorem is proved to guarantee that the observer error decays to and remains in a bounded ball contains the origin and the bound can be controlled by the numerical approach. Compared with approximate discrete-time design method, the two-step approach can have the same observer precision while the design is relatively easy because the continuous-time design methods can be used directly.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129574975","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6564980
Jianzhen Li, Shuxia Ye
This paper investigates the sampled-data based consensus problem of first-order multi-agent systems with quantized communication. A deterministic consensus protocol with the logarithmic quantizer proposed in the literature is reinvestigated. A new sufficient condition is derived under which consensus is achieved. It is proved that for any network topology that has a directed spanning tree, consensus is achieved if the quantization accuracy parameter and the sampling period are small enough. A numerical example is given to illustrate the theoretical results.
{"title":"Quantized consensus of first-order multi-agent systems under directed communication topologies","authors":"Jianzhen Li, Shuxia Ye","doi":"10.1109/ICCA.2013.6564980","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6564980","url":null,"abstract":"This paper investigates the sampled-data based consensus problem of first-order multi-agent systems with quantized communication. A deterministic consensus protocol with the logarithmic quantizer proposed in the literature is reinvestigated. A new sufficient condition is derived under which consensus is achieved. It is proved that for any network topology that has a directed spanning tree, consensus is achieved if the quantization accuracy parameter and the sampling period are small enough. A numerical example is given to illustrate the theoretical results.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127109409","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565022
Lei Wang, Song-lin Yan, Qing‐Guo Wang
This paper investigates consensus problems of multiagent systems with asymmetrically coupled nonidentical agents in the sense of boundedness. By employing a Lyapunov function associated with the left eigenvector of the Laplacian matrix corresponding to eigenvalue zero and some graph theory, we derive a sufficient condition of global bounded consensus in form of several scalar inequalities. A distributed consensus protocol is then designed by solving a few of lower dimensional linear matrix inequalities. The presented framework for designing protocols is quite simple and of small conservation, without assuming the condition of node balance or calculating the eigenvalues of Laplacian matrix, which can be effectively used to design consensus protocols of various weighted and directed networks.
{"title":"Bounded consensus in multi-agent systems of asymmetrically coupled nonidentical agents","authors":"Lei Wang, Song-lin Yan, Qing‐Guo Wang","doi":"10.1109/ICCA.2013.6565022","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565022","url":null,"abstract":"This paper investigates consensus problems of multiagent systems with asymmetrically coupled nonidentical agents in the sense of boundedness. By employing a Lyapunov function associated with the left eigenvector of the Laplacian matrix corresponding to eigenvalue zero and some graph theory, we derive a sufficient condition of global bounded consensus in form of several scalar inequalities. A distributed consensus protocol is then designed by solving a few of lower dimensional linear matrix inequalities. The presented framework for designing protocols is quite simple and of small conservation, without assuming the condition of node balance or calculating the eigenvalues of Laplacian matrix, which can be effectively used to design consensus protocols of various weighted and directed networks.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127404956","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6564983
Xian Zhang, V. Cocquempot, B. Jiang, Hao Yang
This paper investigates the path tracking problem for an electric vehicle (EV) which has four electromechanical wheel systems under normal and faulty conditions. With considering wheel slip constraints and certain actuator faults, a fault-tolerant controller with observer-based fault diagnosis is designed to maintain the system stability and guarantee the tracking performance. Then based on the designed controller, an active fault diagnosis approach is introduced for this typical over-actuated system to isolate and evaluate faults more precisely. Finally, simulations of traction engine faults in RobuCarTM situation are conducted to test the feasibility of the proposed method.
{"title":"Active fault diagnosis based on fault-tolerant control with control constraints for an electric 4WD vehicle","authors":"Xian Zhang, V. Cocquempot, B. Jiang, Hao Yang","doi":"10.1109/ICCA.2013.6564983","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6564983","url":null,"abstract":"This paper investigates the path tracking problem for an electric vehicle (EV) which has four electromechanical wheel systems under normal and faulty conditions. With considering wheel slip constraints and certain actuator faults, a fault-tolerant controller with observer-based fault diagnosis is designed to maintain the system stability and guarantee the tracking performance. Then based on the designed controller, an active fault diagnosis approach is introduced for this typical over-actuated system to isolate and evaluate faults more precisely. Finally, simulations of traction engine faults in RobuCarTM situation are conducted to test the feasibility of the proposed method.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127326004","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565048
Xiaoming Wu, Zhiyong Sun, F. Liang, Changbin Yu
The control and synchronization of time-delayed complex networks have gained considerable attention recently. However, in the existing literature there is few result on the delay estimation in complex networks. In this paper, based on the observer concept and the adaptive synchronization strategy, we present a general and systematic method to estimate the unknown time delays in complex networks. Two kinds of delays, the coupling delays and the node delays, are considered. Several criteria are obtained for the real time identification of the unknown network delays. The local stability of the augmented error systems is proved via the Lyapunov-Krasovskii functional approach and the Barbalat's Lemma. Two typical examples are presented to verify the effectiveness of the proposed approach.
{"title":"Adaptive synchronization-based approach for real-time identification of coupling delays or node delays in dynamical complex networks","authors":"Xiaoming Wu, Zhiyong Sun, F. Liang, Changbin Yu","doi":"10.1109/ICCA.2013.6565048","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565048","url":null,"abstract":"The control and synchronization of time-delayed complex networks have gained considerable attention recently. However, in the existing literature there is few result on the delay estimation in complex networks. In this paper, based on the observer concept and the adaptive synchronization strategy, we present a general and systematic method to estimate the unknown time delays in complex networks. Two kinds of delays, the coupling delays and the node delays, are considered. Several criteria are obtained for the real time identification of the unknown network delays. The local stability of the augmented error systems is proved via the Lyapunov-Krasovskii functional approach and the Barbalat's Lemma. Two typical examples are presented to verify the effectiveness of the proposed approach.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130094909","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565190
Xin Xin, Yannian Liu
This paper concerns reduced-order stable controllers for the remotely driven acrobot (RDA) moving in a vertical plane, which is a 2-link planar underactuated robot whose second link is remotely driven by an actuator mounted at a fixed base through a belt. When the angles of two links are only measurable, first, this paper proves via a constructive procedure that stable controllers exist for a local stabilization of the upright equilibrium point of RDA by designing a specific output with an adjustable parameter and employing the pole-zero relation of the linearized model around the equilibrium point. Second, the paper presents a design method to obtain explicitly a formula of second-order (reduced-order) stable controllers by choosing the adjustable parameter. The obtained results for the RDA are compared with those of the directly driven acrobot (DDA) and the Pendubot in the literature. Simulation results are presented to validate the theoretical results.
{"title":"Reduced-order stable stabilizing controllers for remotely driven acrobot: Existence and design method","authors":"Xin Xin, Yannian Liu","doi":"10.1109/ICCA.2013.6565190","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565190","url":null,"abstract":"This paper concerns reduced-order stable controllers for the remotely driven acrobot (RDA) moving in a vertical plane, which is a 2-link planar underactuated robot whose second link is remotely driven by an actuator mounted at a fixed base through a belt. When the angles of two links are only measurable, first, this paper proves via a constructive procedure that stable controllers exist for a local stabilization of the upright equilibrium point of RDA by designing a specific output with an adjustable parameter and employing the pole-zero relation of the linearized model around the equilibrium point. Second, the paper presents a design method to obtain explicitly a formula of second-order (reduced-order) stable controllers by choosing the adjustable parameter. The obtained results for the RDA are compared with those of the directly driven acrobot (DDA) and the Pendubot in the literature. Simulation results are presented to validate the theoretical results.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"01 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129152067","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565080
Zhe Zhou, Chunjie Yang, Chenglin Wen
The problem of probability transformation is crucial for decision-making in Dempster-Shafer Theory of evidence. In this paper, a compromise method has been proposed for transforming basic probability assignment to probability function. The novel transformation method can acquire better balance between easy decision-making and high risk. Numerical examples are used to illustrate the rationality and efficiency of the proposed method.
{"title":"Belief function to probability: A tradeoff between easy decision-making and high risk","authors":"Zhe Zhou, Chunjie Yang, Chenglin Wen","doi":"10.1109/ICCA.2013.6565080","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565080","url":null,"abstract":"The problem of probability transformation is crucial for decision-making in Dempster-Shafer Theory of evidence. In this paper, a compromise method has been proposed for transforming basic probability assignment to probability function. The novel transformation method can acquire better balance between easy decision-making and high risk. Numerical examples are used to illustrate the rationality and efficiency of the proposed method.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036741","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 : 2013-06-12DOI: 10.1109/ICCA.2013.6565160
Kun Chen, Yi Liu
A new just-in-time learning (JITL) method using adaptive relevant sample selection strategy is proposed for online prediction of product quality in chemical processes. To overcome certain shortcomings in traditional JITL, such as the incomplete usage of primary variable information and inaccurate feature weights assignment, an adaptive sample selection approach is introduced. First, to keep both input and output information, a dual-objective optimization scheme with an adaptive parameter is considered. Then, an adaptive feature weight assignment strategy is present to construct a suitable similarity criterion for JITL. To illustrate the performance of the proposed method, it is applied to online prediction of the crude oil endpoint in an industrial fluidized catalytic cracking unit. The experimental results demonstrate that the proposed method can help improve the prediction performance.
{"title":"Adaptive weighted relevant sample selection of just-in-time learning soft sensor for chemical processes","authors":"Kun Chen, Yi Liu","doi":"10.1109/ICCA.2013.6565160","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6565160","url":null,"abstract":"A new just-in-time learning (JITL) method using adaptive relevant sample selection strategy is proposed for online prediction of product quality in chemical processes. To overcome certain shortcomings in traditional JITL, such as the incomplete usage of primary variable information and inaccurate feature weights assignment, an adaptive sample selection approach is introduced. First, to keep both input and output information, a dual-objective optimization scheme with an adaptive parameter is considered. Then, an adaptive feature weight assignment strategy is present to construct a suitable similarity criterion for JITL. To illustrate the performance of the proposed method, it is applied to online prediction of the crude oil endpoint in an industrial fluidized catalytic cracking unit. The experimental results demonstrate that the proposed method can help improve the prediction performance.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131966701","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}
To alleviate worries of busy younger parents, this paper designs a system for monitoring infant speech emotion. The system distinguish infants' cry from other voice (e.g. parents' voice) by using speech emotion recognition. When the inputted speech signal is recognized as infant cry, it judges cry reasons (fever, urination, hunger) according to the signals from sensors and then take proper propitiatory measures (playing music or parents' voices) to ease the infants. Finally, it sends the guardians a message or calls the guardians about cry reasons by the GSM module, so that humane guardianship for infant is realized. Experimental results show that the system realizes the aforementioned functions, and is a good partner for infant and an under servant for younger parents.
{"title":"System design for monitoring infant speech emotion","authors":"Lin Zhong, Yanxiong Li, Xin Wei, Guanglong Li, Zili Wang, Yewen Jiang","doi":"10.1109/ICCA.2013.6564891","DOIUrl":"https://doi.org/10.1109/ICCA.2013.6564891","url":null,"abstract":"To alleviate worries of busy younger parents, this paper designs a system for monitoring infant speech emotion. The system distinguish infants' cry from other voice (e.g. parents' voice) by using speech emotion recognition. When the inputted speech signal is recognized as infant cry, it judges cry reasons (fever, urination, hunger) according to the signals from sensors and then take proper propitiatory measures (playing music or parents' voices) to ease the infants. Finally, it sends the guardians a message or calls the guardians about cry reasons by the GSM module, so that humane guardianship for infant is realized. Experimental results show that the system realizes the aforementioned functions, and is a good partner for infant and an under servant for younger parents.","PeriodicalId":336534,"journal":{"name":"2013 10th IEEE International Conference on Control and Automation (ICCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130988562","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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