One certainty in software development is that requirements always evolve. To effectively handle requirements evolution, determining the impact of requirements evolution from quantitative perspectives is a breakthrough. This paper first defines labelled requirements and requirements models by array, which is simple and effective to express requirements or models. Then respectively creates requirements model adjacency matrix and reachability matrix . Depending on matrix shift and calculation, a series of Requirements Evolution ripple-effects are formularized. At the same time, ripple-effect analysis for requirements evolution operations is discussed. An example supports the quantitative models underlying the proposed metrics.This work provides a new method for effectively managing and controlling and evaluating requirements evolution, and building an effect requirements analysis and management tool.
{"title":"Quantitative Analysis for Requirements Evolution's Ripple-Effect","authors":"Yuqing Yan, Shixian Li, Xianming Liu","doi":"10.1109/CAR.2009.74","DOIUrl":"https://doi.org/10.1109/CAR.2009.74","url":null,"abstract":"One certainty in software development is that requirements always evolve. To effectively handle requirements evolution, determining the impact of requirements evolution from quantitative perspectives is a breakthrough. This paper first defines labelled requirements and requirements models by array, which is simple and effective to express requirements or models. Then respectively creates requirements model adjacency matrix and reachability matrix . Depending on matrix shift and calculation, a series of Requirements Evolution ripple-effects are formularized. At the same time, ripple-effect analysis for requirements evolution operations is discussed. An example supports the quantitative models underlying the proposed metrics.This work provides a new method for effectively managing and controlling and evaluating requirements evolution, and building an effect requirements analysis and management tool.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133891132","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}
Inertial measurement unit(IMU), consisted of three mutually-perpendicular Ring Laser Gyros¿RLG¿ and three accelerometers, is an important part of RLG -based strap-down inertial navigation systems(SINS). RLG provides measurement of change in vehicle attitude or its turn rate with respect to inertial space. Accelerometer provides measurement of specific force. These measurements provided by gyros and accelerometers are calculated to obtain the desired attitude, velocity and position information with respect to a pre-defined reference frame. So the accuracy of SINS clearly depends on the accuracy of the gyros and accelerometers. In order to improve the accuracy of SINS, auto compensation techniques of rotation is used. With IMU rotating about one or two axis of the vehicle, the bias errors of gyros and accelerometers may be modulated into periodical variable signal. So the modulated sensor errors reduce SINS errors. The theory of rotation auto compensation technique is analyzed. Single channel error propagation equations based on rotation compensation are derived. The simulation experiments of the SINS are carried out. Analytic results and the simulation results indicate that, with the help of rotation auto compensation, the effect of gyro’s random drift and accelerometer’s bias on SINS errors is greatly reduced.
{"title":"Research on Auto Compensation Technique of Strap-down Inertial Navigation Systems","authors":"Lun-dong Zhang, Jun-xiang Lian, Mei-ping Wu, Zhiqiang Zheng","doi":"10.1109/CAR.2009.80","DOIUrl":"https://doi.org/10.1109/CAR.2009.80","url":null,"abstract":"Inertial measurement unit(IMU), consisted of three mutually-perpendicular Ring Laser Gyros¿RLG¿ and three accelerometers, is an important part of RLG -based strap-down inertial navigation systems(SINS). RLG provides measurement of change in vehicle attitude or its turn rate with respect to inertial space. Accelerometer provides measurement of specific force. These measurements provided by gyros and accelerometers are calculated to obtain the desired attitude, velocity and position information with respect to a pre-defined reference frame. So the accuracy of SINS clearly depends on the accuracy of the gyros and accelerometers. In order to improve the accuracy of SINS, auto compensation techniques of rotation is used. With IMU rotating about one or two axis of the vehicle, the bias errors of gyros and accelerometers may be modulated into periodical variable signal. So the modulated sensor errors reduce SINS errors. The theory of rotation auto compensation technique is analyzed. Single channel error propagation equations based on rotation compensation are derived. The simulation experiments of the SINS are carried out. Analytic results and the simulation results indicate that, with the help of rotation auto compensation, the effect of gyro’s random drift and accelerometer’s bias on SINS errors is greatly reduced.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130991469","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}
In this paper a control approach is presented for flight control system of a rigid body missile using both State Dependent Riccati Equation (SDRE) method and Fast Output Sampling (FOS) technique. The dynamics and kinematics for missile attitude stable problem are of typical nonlinear character. SDRE technique has been well applied to this kind of highly nonlinear control problems. But in practice the system states needed in the SDRE method are sometimes difficult to obtain. FOS method, which makes use of only the output samples, is combined with SDRE to accommodate the incomplete system state information. Thus, the control approach is more practical and easy to implement. The method and its stabilization are examined under numerical simulations and the results show that the proposed method produces excellent results and multi-model robust stabilization is achieved.
{"title":"Missile Autopilot Design Based on State Dependent Riccati Equation","authors":"P. Sun, Kun Liu","doi":"10.1109/CAR.2009.20","DOIUrl":"https://doi.org/10.1109/CAR.2009.20","url":null,"abstract":"In this paper a control approach is presented for flight control system of a rigid body missile using both State Dependent Riccati Equation (SDRE) method and Fast Output Sampling (FOS) technique. The dynamics and kinematics for missile attitude stable problem are of typical nonlinear character. SDRE technique has been well applied to this kind of highly nonlinear control problems. But in practice the system states needed in the SDRE method are sometimes difficult to obtain. FOS method, which makes use of only the output samples, is combined with SDRE to accommodate the incomplete system state information. Thus, the control approach is more practical and easy to implement. The method and its stabilization are examined under numerical simulations and the results show that the proposed method produces excellent results and multi-model robust stabilization is achieved.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128336587","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}
This paper present the concept of the outlier mining, discussed using Euclidean distance-based outlier mining to analyse the expressway toll to anti-defrauding, for to illustrate it, gived the example of toll collection’s man-day and nullah, analysed the toll collection data in Microsoft SQL Server, helped the toll check man to find outlied data, via emphases check on those outlier data, can fing the evidence for anti-defrauding; can offer proofe chain to treat with the defrauding things, this paper also analysed the strongpoint and the shortcoming of using the algorithms of Euclidean distance-based outlier to analyse the defrauding in highway toll collection.
{"title":"A Kind of Algorithms for Euclidean Distance-Based Outlier Mining and its Application to Expressway Toll Fraud Detection","authors":"Zhijun Huang, Chuangwen Xia","doi":"10.1109/CAR.2009.43","DOIUrl":"https://doi.org/10.1109/CAR.2009.43","url":null,"abstract":"This paper present the concept of the outlier mining, discussed using Euclidean distance-based outlier mining to analyse the expressway toll to anti-defrauding, for to illustrate it, gived the example of toll collection’s man-day and nullah, analysed the toll collection data in Microsoft SQL Server, helped the toll check man to find outlied data, via emphases check on those outlier data, can fing the evidence for anti-defrauding; can offer proofe chain to treat with the defrauding things, this paper also analysed the strongpoint and the shortcoming of using the algorithms of Euclidean distance-based outlier to analyse the defrauding in highway toll collection.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127071700","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}
Coal gas drainage out of the mine excavation workspace is the urgent problem to be solved for safe production, a novel double mode fuzzy control strategy of gas drainage system for the coal local ventilator is proposed in the paper. One fuzzy control mode is used in normal aeration state. The other mode is adopted to expel the gas from the mine well, when the gas strength is abnormal. The switching condition of the two modes is discussed, the air flow press distribution in digging laneway is analyzed, and the fuzzy control system is designed. The theory analysis and experiment results show that the suggested double mode fuzzy control schemes are transferred smoothly and the speed of local ventilator is adjusted according to the gas variable concentration in both the normal aeration and abnormal ventilation state, which assures the safety of coal mining.
{"title":"Double Mode Fuzzy Control of Gas Drainage System for Coal Local Ventilator","authors":"Xianmin Ma","doi":"10.1109/CAR.2009.67","DOIUrl":"https://doi.org/10.1109/CAR.2009.67","url":null,"abstract":"Coal gas drainage out of the mine excavation workspace is the urgent problem to be solved for safe production, a novel double mode fuzzy control strategy of gas drainage system for the coal local ventilator is proposed in the paper. One fuzzy control mode is used in normal aeration state. The other mode is adopted to expel the gas from the mine well, when the gas strength is abnormal. The switching condition of the two modes is discussed, the air flow press distribution in digging laneway is analyzed, and the fuzzy control system is designed. The theory analysis and experiment results show that the suggested double mode fuzzy control schemes are transferred smoothly and the speed of local ventilator is adjusted according to the gas variable concentration in both the normal aeration and abnormal ventilation state, which assures the safety of coal mining.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130926937","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}
Zhen Chen, Ming Li, Shaofeng Jiang, Shui-gen Wei, Yu Wang
This paper presents a new mathematical definition of straight-line optical flow. By using 21 straight-line optical flows in 3 consecutive image frames, a set of equations about 3D motion parameters are established to obtain 12 motion parameters of 3D object and coordinates of the 3D straight line. Usually, it is difficult to find the 21 straight lines on correspondence. In this paper, a minimum of 6 straight-line optical flows in 3 consecutive image frames is required to obtain 12 motion parameters of 3D object and coordinates of the 3D straight line, by solving non-linear equations. With the parameters and coordinates a 3D scene can be reconstructed.
{"title":"A New Non-Linear Algorithm for 3D Reconstruction from Straight-line Optical Flow","authors":"Zhen Chen, Ming Li, Shaofeng Jiang, Shui-gen Wei, Yu Wang","doi":"10.1109/CAR.2009.98","DOIUrl":"https://doi.org/10.1109/CAR.2009.98","url":null,"abstract":"This paper presents a new mathematical definition of straight-line optical flow. By using 21 straight-line optical flows in 3 consecutive image frames, a set of equations about 3D motion parameters are established to obtain 12 motion parameters of 3D object and coordinates of the 3D straight line. Usually, it is difficult to find the 21 straight lines on correspondence. In this paper, a minimum of 6 straight-line optical flows in 3 consecutive image frames is required to obtain 12 motion parameters of 3D object and coordinates of the 3D straight line, by solving non-linear equations. With the parameters and coordinates a 3D scene can be reconstructed.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124627614","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}
RFID technology, USB communication technology, on-line battery internal resistance monitoring technology and virtual instrument host computer scheme with database technique was adopted to establish an original VRLAB detection and maintenance system, whilst the software and hardware design was completed. Current system has solved the problem of wasting time and workforce existing in the VRLAB when detecting battery capacity, in the mean time, battery maintenance and estimate of the impaired capability could also be achieved. Process of experiment suggested that current system has considerably improved the efficiency of capacity measurement and maintenance of the VRLAB, meanwhile, accuracy of discretion could be improved. The cost of battery detection and maintenance has been saved exactly.
{"title":"The Measurement and Maintenance System of the VRLAB Based on RFID","authors":"Shifeng Yang, Songtao Jin, Zheng Xu","doi":"10.1109/CAR.2009.25","DOIUrl":"https://doi.org/10.1109/CAR.2009.25","url":null,"abstract":"RFID technology, USB communication technology, on-line battery internal resistance monitoring technology and virtual instrument host computer scheme with database technique was adopted to establish an original VRLAB detection and maintenance system, whilst the software and hardware design was completed. Current system has solved the problem of wasting time and workforce existing in the VRLAB when detecting battery capacity, in the mean time, battery maintenance and estimate of the impaired capability could also be achieved. Process of experiment suggested that current system has considerably improved the efficiency of capacity measurement and maintenance of the VRLAB, meanwhile, accuracy of discretion could be improved. The cost of battery detection and maintenance has been saved exactly.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122051698","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}
In order to improve the development efficiency of the embedded intelligent vehicle system and replace the inefficient traditional embedded system debugging method, a simulation and debugging environment is developed for intelligent vehicles which are able to detect black tracks on white routes and realize fast automatic driving. OpenGL graphics engine is integrated in this system, which constructs simulated routes and vehicles, performs the whole scene and displays objects on the screen. ODE physics engine is introduced to the environment for the simulation of rigid body dynamics, and makes vehicle drive and interact with other scene objects. Algorithm and other user defined functions are compiled into an algorithm library on the PC and can be debugged directly by the simulation environment, which eases the code transplant process. By using this environment, it will be more convenient to guarantee the stability and robustness of the software of intelligent vehicles. In the meantime, high performance software code can be produced for precise steer control and safe driving, and the intelligent vehicles are able to run stably on any provided course at a high speed. Test results show that the intelligent vehicle simulation and debugging environment could actually improve the development efficiency and speed up the development progress significantly.
{"title":"Intelligent Vehicle Simulation and Debugging Environment Based on Physics Engine","authors":"Feng Luo, Chu Liu, Zechang Sun","doi":"10.1109/CAR.2009.38","DOIUrl":"https://doi.org/10.1109/CAR.2009.38","url":null,"abstract":"In order to improve the development efficiency of the embedded intelligent vehicle system and replace the inefficient traditional embedded system debugging method, a simulation and debugging environment is developed for intelligent vehicles which are able to detect black tracks on white routes and realize fast automatic driving. OpenGL graphics engine is integrated in this system, which constructs simulated routes and vehicles, performs the whole scene and displays objects on the screen. ODE physics engine is introduced to the environment for the simulation of rigid body dynamics, and makes vehicle drive and interact with other scene objects. Algorithm and other user defined functions are compiled into an algorithm library on the PC and can be debugged directly by the simulation environment, which eases the code transplant process. By using this environment, it will be more convenient to guarantee the stability and robustness of the software of intelligent vehicles. In the meantime, high performance software code can be produced for precise steer control and safe driving, and the intelligent vehicles are able to run stably on any provided course at a high speed. Test results show that the intelligent vehicle simulation and debugging environment could actually improve the development efficiency and speed up the development progress significantly.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132336877","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}
Abstract—A four-phase 8/6 pole and 75kW switched reluctance motor drive based on 32-bit digital signal processor TMS320F2812 is designed. The details of the controller design and analysis are discussed. In addition, aiming at solving the nonlinear problems of the switched reluctance motor, fuzzy-PI hybrid algorithm is presented to control the motor speed and the phase current. Experimental results show that the hardware and software design of the switched reluctance drive system are reasonable, and the proposed fuzzy-PI double closed-loop control strategy is feasible and correct.
{"title":"The Design of a Switched Reluctance Motor Drive System","authors":"Jiangbiao He, Guangzheng Liang, Shihu Wang","doi":"10.1109/CAR.2009.102","DOIUrl":"https://doi.org/10.1109/CAR.2009.102","url":null,"abstract":"Abstract—A four-phase 8/6 pole and 75kW switched reluctance motor drive based on 32-bit digital signal processor TMS320F2812 is designed. The details of the controller design and analysis are discussed. In addition, aiming at solving the nonlinear problems of the switched reluctance motor, fuzzy-PI hybrid algorithm is presented to control the motor speed and the phase current. Experimental results show that the hardware and software design of the switched reluctance drive system are reasonable, and the proposed fuzzy-PI double closed-loop control strategy is feasible and correct.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128365575","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}
Welding is a complex process including of physics, conducting heat, metallurgy, mechanics. when producing residual stress, crack, air holes and so on in the parts, it will reduce welding strength and welding quality. Though there are many methods to relif residual stress, it is a difficult problem about how to improve it. We use welding with trailing peening to reduce residual stress. In the process it is important to decide when to peen it. In the article, using the software ANSYS to simulate muti-welding seam process of flat, taking advantage of indirect couple method, we can know temperature field after welding, so we can be ready to peen the part.
{"title":"The Temperature and Stress Field Distribution of Muti-welding Seam Flat with Trailing Peening","authors":"Q. Bai, Yuejin Ma","doi":"10.1109/CAR.2009.11","DOIUrl":"https://doi.org/10.1109/CAR.2009.11","url":null,"abstract":"Welding is a complex process including of physics, conducting heat, metallurgy, mechanics. when producing residual stress, crack, air holes and so on in the parts, it will reduce welding strength and welding quality. Though there are many methods to relif residual stress, it is a difficult problem about how to improve it. We use welding with trailing peening to reduce residual stress. In the process it is important to decide when to peen it. In the article, using the software ANSYS to simulate muti-welding seam process of flat, taking advantage of indirect couple method, we can know temperature field after welding, so we can be ready to peen the part.","PeriodicalId":320307,"journal":{"name":"2009 International Asia Conference on Informatics in Control, Automation and Robotics","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128437343","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：