Pub Date : 2010-06-08DOI: 10.1109/ISSCAA.2010.5633144
Wei Zhao, Ye San
Aiming at the drawback of being easily trapped into the local optima and premature convergence in quantum-behaved particle swarm optimization algorithm, clustering coefficient and characteristic distance is proposed to measure diversity of the population by which quantum-behaved particle swarm optimization algorithm is guided. The population is divergent to increase population diversity and enhance exploration if clustering coefficient is large and characteristic distance is small; the population is convergent to reduce population diversity and enhance exploitation if clustering coefficient is small and characteristic distance is large. The simulation results of testing four benchmark functions show that diversity-guided quantum-behaved particle swarm optimization algorithm based on clustering coefficient and characteristic distance has better optimization performance than other algorithms, the validity and feasibility of the method is verified.
{"title":"Diversity-guided quantum-behaved particle swarm optimization algorithm based on clustering coefficient and characteristic distance","authors":"Wei Zhao, Ye San","doi":"10.1109/ISSCAA.2010.5633144","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5633144","url":null,"abstract":"Aiming at the drawback of being easily trapped into the local optima and premature convergence in quantum-behaved particle swarm optimization algorithm, clustering coefficient and characteristic distance is proposed to measure diversity of the population by which quantum-behaved particle swarm optimization algorithm is guided. The population is divergent to increase population diversity and enhance exploration if clustering coefficient is large and characteristic distance is small; the population is convergent to reduce population diversity and enhance exploitation if clustering coefficient is small and characteristic distance is large. The simulation results of testing four benchmark functions show that diversity-guided quantum-behaved particle swarm optimization algorithm based on clustering coefficient and characteristic distance has better optimization performance than other algorithms, the validity and feasibility of the method is verified.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122505416","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5632499
Wei Hongtao, Kong Xianren
Using FE method, the typical honeycomb core modulus is studied, the nonlinear stress-strain relationship with a property of “harden spring” under tensile load and “soften spring” under compress load is obtained. The effect of the height of the core on the analysis of the modulus is discussed, the results are compared with these acquired from Gibson formula. The polynomial fitting method is adopted to get the nonlinear modulus. The Kirchhoff assumption and Galerkin approximation are used to get the equation of motion of the typical honeycomb core sandwich beam. The numerical results are obtained. The nonlinear amplitude-frequency response of forced vibration is discussed.
{"title":"Effect of non-linear in-plane honeycomb core modulus on forced vibration of sandwich beam","authors":"Wei Hongtao, Kong Xianren","doi":"10.1109/ISSCAA.2010.5632499","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5632499","url":null,"abstract":"Using FE method, the typical honeycomb core modulus is studied, the nonlinear stress-strain relationship with a property of “harden spring” under tensile load and “soften spring” under compress load is obtained. The effect of the height of the core on the analysis of the modulus is discussed, the results are compared with these acquired from Gibson formula. The polynomial fitting method is adopted to get the nonlinear modulus. The Kirchhoff assumption and Galerkin approximation are used to get the equation of motion of the typical honeycomb core sandwich beam. The numerical results are obtained. The nonlinear amplitude-frequency response of forced vibration is discussed.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131622431","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5632330
Yao Yu, Jia Jie, M. Kemao
Space missions to libration points are an interesting opportunity to perform deep space explorations reducing costs and risks and to obtain better results by taking advantages of invariant manifolds of periodic orbits. This paper studies the chaining of periodic orbits via their invariant manifolds to provide various types of low energy orbits for space exploration, particularly in the Sun-Earth-Moon system. Recent work shows that this approach may be used to design planetary flyby and planetary capture orbits. This shows that the technique for chaining periodic orbits is much more general and widely applicable, and is not restricted to libration missions only. The use of invariant manifolds provides a unified theoretical approach for studying different mission applications. It also provides robust numerical algorithms for the computation and optimization of such trajectories.
{"title":"Chaining simple periodic orbits design based on invariant manifolds in the Circular Restricted Three-Body Problem","authors":"Yao Yu, Jia Jie, M. Kemao","doi":"10.1109/ISSCAA.2010.5632330","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5632330","url":null,"abstract":"Space missions to libration points are an interesting opportunity to perform deep space explorations reducing costs and risks and to obtain better results by taking advantages of invariant manifolds of periodic orbits. This paper studies the chaining of periodic orbits via their invariant manifolds to provide various types of low energy orbits for space exploration, particularly in the Sun-Earth-Moon system. Recent work shows that this approach may be used to design planetary flyby and planetary capture orbits. This shows that the technique for chaining periodic orbits is much more general and widely applicable, and is not restricted to libration missions only. The use of invariant manifolds provides a unified theoretical approach for studying different mission applications. It also provides robust numerical algorithms for the computation and optimization of such trajectories.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132709383","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5633300
Xiao-Liang Wang, Ye Ma, Xue-xiong Shan
The dynamics and kinematics model is very important for the analysis of stability, manipulation and control of stratosphere airship. A full modeling approach that includes the computation of aerodynamics of airship and the added mass for the nonlinear dynamics simulation of stratosphere airships is proposed in this paper. In this approach, the aerodynamics of airship is calculated based on a panel method, an engineering estimation and theory approach. A new numerical method for calculating added masses of airship is developed by using the CFD method. This model can simulate the motion of stratosphere airships quickly and accurately.
{"title":"Modeling of stratosphere airship","authors":"Xiao-Liang Wang, Ye Ma, Xue-xiong Shan","doi":"10.1109/ISSCAA.2010.5633300","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5633300","url":null,"abstract":"The dynamics and kinematics model is very important for the analysis of stability, manipulation and control of stratosphere airship. A full modeling approach that includes the computation of aerodynamics of airship and the added mass for the nonlinear dynamics simulation of stratosphere airships is proposed in this paper. In this approach, the aerodynamics of airship is calculated based on a panel method, an engineering estimation and theory approach. A new numerical method for calculating added masses of airship is developed by using the CFD method. This model can simulate the motion of stratosphere airships quickly and accurately.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122912050","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5633358
Wu Wei
The performance of multitarget tracking in clutter can be improved by using higher accuracy data association algorithm and more efficient state estimation method. This paper presents a novel fixed-lag TSDA-AI smoothing algorithm, which enhances the accuracy of state estimation by using fixed-lag smoothing, and improves the probability of real “measurement-target” combination by using two-scan measurements and the associated amplitude feature in the data association method. Its efficiency has been confirmed by computer simulations.
{"title":"Multitarget tracking in clutter using two-scan data association algorithm and fixed-lag smoothing","authors":"Wu Wei","doi":"10.1109/ISSCAA.2010.5633358","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5633358","url":null,"abstract":"The performance of multitarget tracking in clutter can be improved by using higher accuracy data association algorithm and more efficient state estimation method. This paper presents a novel fixed-lag TSDA-AI smoothing algorithm, which enhances the accuracy of state estimation by using fixed-lag smoothing, and improves the probability of real “measurement-target” combination by using two-scan measurements and the associated amplitude feature in the data association method. Its efficiency has been confirmed by computer simulations.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122200700","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5632323
Yanbin Li, Youhua Gao
The “Tabletop” and “umbrella” style platforms of 3DOF air-bearing spacecraft simulator were compared. According to the theory on kineto-elastodynamic analysis and on the spacecraft attitude kinetics, the formulary for the platform structure mass-center displacement is deduced. It is calculated that the unbalance torque resulted from deforming of the platform of air-bearing simulator acted on gravity. Both of the styles can be compared by analyzing unbalance torque influence by changing of distance between the plate and the center of rotation of the simulator.The result shows that tabletop style platform has such advantages as lower equilibrium sensitivity, higher adaptability for payload than umbrella style platform. However, because the rotation center of air bearing of tabletop style platform locates the plate of the platform, the maximal deflection angle of the simulator was restricted.
{"title":"Compare Tabletop style platform with umbrella style platform of air bearings spacecraft simulator","authors":"Yanbin Li, Youhua Gao","doi":"10.1109/ISSCAA.2010.5632323","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5632323","url":null,"abstract":"The “Tabletop” and “umbrella” style platforms of 3DOF air-bearing spacecraft simulator were compared. According to the theory on kineto-elastodynamic analysis and on the spacecraft attitude kinetics, the formulary for the platform structure mass-center displacement is deduced. It is calculated that the unbalance torque resulted from deforming of the platform of air-bearing simulator acted on gravity. Both of the styles can be compared by analyzing unbalance torque influence by changing of distance between the plate and the center of rotation of the simulator.The result shows that tabletop style platform has such advantages as lower equilibrium sensitivity, higher adaptability for payload than umbrella style platform. However, because the rotation center of air bearing of tabletop style platform locates the plate of the platform, the maximal deflection angle of the simulator was restricted.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132110204","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5633434
H. Ju, Liping Tian
Characteristic, normal and completely normal interval-valued fuzzy left h-ideals of hemirings are described. Then some basic results are given.
描述了半分的特征、正态和完全正态区间值模糊左h理想。然后给出了一些基本结果。
{"title":"Special types of interval-valued fuzzy left h-ideals of hemirings","authors":"H. Ju, Liping Tian","doi":"10.1109/ISSCAA.2010.5633434","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5633434","url":null,"abstract":"Characteristic, normal and completely normal interval-valued fuzzy left h-ideals of hemirings are described. Then some basic results are given.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134355512","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5633382
Canchang Liu, Chuanbo Ren
Based on spring time-delay feedback controller, the excited cantilever beam modeled as an inextensible Euler-Bernoulli beam is investigated for the primary resonance. The spring controller is designed to control the dynamic behavior of the nonlinear dynamic system. The method of multiple scales is utilized directly to obtain the linear equations. The effect of the feedback gain and time-delay on the steady state response is investigated. It is found that proper selection of the feedback gain and time-delay can enhance the control performance. The bifurcation can be eliminated or the position of bifurcation point can be changed.
{"title":"Time-delay control for non-linear dynamic cantilever beam","authors":"Canchang Liu, Chuanbo Ren","doi":"10.1109/ISSCAA.2010.5633382","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5633382","url":null,"abstract":"Based on spring time-delay feedback controller, the excited cantilever beam modeled as an inextensible Euler-Bernoulli beam is investigated for the primary resonance. The spring controller is designed to control the dynamic behavior of the nonlinear dynamic system. The method of multiple scales is utilized directly to obtain the linear equations. The effect of the feedback gain and time-delay on the steady state response is investigated. It is found that proper selection of the feedback gain and time-delay can enhance the control performance. The bifurcation can be eliminated or the position of bifurcation point can be changed.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"58 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134127352","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5632507
Zhang Xingyuan, Li Songjing, Li Jixiao
Due to the higher saturation magnetization and magnetoviscosity of magnetic fluids when exposed to a magnetic field, magnetic fluids are filled into the working gaps of a servo-valve torque motor to improve the dynamic performance of the torque motor in this paper. After the construction and working principle of a torque motor with magnetic fluids being introduced, the mathematical models are established. Simulation and experiments on the dynamic characteristics of the torque motor are carried out. Based on the experimental data and the mathematical model of the torque motor with magnetic fluids, the estimated values of the unknown parameters are obtained by a curve-fitting parameter identification method in the least-square sense.
{"title":"Parameter identification of a hydraulic servo-valve torque motor with magnetic fluids based on dynamic characteristics","authors":"Zhang Xingyuan, Li Songjing, Li Jixiao","doi":"10.1109/ISSCAA.2010.5632507","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5632507","url":null,"abstract":"Due to the higher saturation magnetization and magnetoviscosity of magnetic fluids when exposed to a magnetic field, magnetic fluids are filled into the working gaps of a servo-valve torque motor to improve the dynamic performance of the torque motor in this paper. After the construction and working principle of a torque motor with magnetic fluids being introduced, the mathematical models are established. Simulation and experiments on the dynamic characteristics of the torque motor are carried out. Based on the experimental data and the mathematical model of the torque motor with magnetic fluids, the estimated values of the unknown parameters are obtained by a curve-fitting parameter identification method in the least-square sense.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133539279","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 : 2010-06-08DOI: 10.1109/ISSCAA.2010.5632723
H. Ao, Hongyuan Jiang, Hongyu Zhao
The application of porous characteristics of Metal Rubber (MR) material in sealing structure was studied in the paper. A sealing O-ring of MR was designed and tested in the sealing experimental setup. The linear expansion of MR material was studied. The sealing performance of MR O-ring was modeled and simulated considering the geometric dimension of the sealing slot and the cross section of rings. The transfer coefficient of pressure force from radial direction to axial direction was obtained and verified experimentally. The good agreement of the experimental results and the simulated results indicates the suitability of the calculated method for determining the sealing behavior with O-rings.
{"title":"Modeling and experimental study of linear expansion characteristics of metallic rubber material in sealing structure","authors":"H. Ao, Hongyuan Jiang, Hongyu Zhao","doi":"10.1109/ISSCAA.2010.5632723","DOIUrl":"https://doi.org/10.1109/ISSCAA.2010.5632723","url":null,"abstract":"The application of porous characteristics of Metal Rubber (MR) material in sealing structure was studied in the paper. A sealing O-ring of MR was designed and tested in the sealing experimental setup. The linear expansion of MR material was studied. The sealing performance of MR O-ring was modeled and simulated considering the geometric dimension of the sealing slot and the cross section of rings. The transfer coefficient of pressure force from radial direction to axial direction was obtained and verified experimentally. The good agreement of the experimental results and the simulated results indicates the suitability of the calculated method for determining the sealing behavior with O-rings.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133593680","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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