摘要 :
In this paper, mobile robot is able to realize self-localization based on the new artificial landmark system- MR code, on the basis of this study, combined with EKF-SLAM algorithm, STF-SLAM algorithm and practical topology navigat...
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In this paper, mobile robot is able to realize self-localization based on the new artificial landmark system- MR code, on the basis of this study, combined with EKF-SLAM algorithm, STF-SLAM algorithm and practical topology navigation algorithm, a visual SLAM and navigation experimental system based on MR code has been implemented in this paper, mobile robot realizes simultaneous localization and mapping relay on this system, then a large number of experiments have been done, the results show that utilizing the system, the robot can complete the map building and autonomous navigation in indoor environment, while this navigation system also has the following characteristics: high reliability, easy operation and a certain commercial value.
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摘要 :
In this paper, mobile robot is able to realize self-localization based on the new artificial landmark system- MR code, on the basis of this study, combined with EKF-SLAM algorithm, STF-SLAM algorithm and practical topology navigat...
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In this paper, mobile robot is able to realize self-localization based on the new artificial landmark system- MR code, on the basis of this study, combined with EKF-SLAM algorithm, STF-SLAM algorithm and practical topology navigation algorithm, a visual SLAM and navigation experimental system based on MR code has been implemented in this paper, mobile robot realizes simultaneous localization and mapping relay on this system, then a large number of experiments have been done, the results show that utilizing the system, the robot can complete the map building and autonomous navigation in indoor environment, while this navigation system also has the following characteristics: high reliability, easy operation and a certain commercial value.
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Based on the engineering background of shaft lining shearing failure caused by a fault of drop 7.2 m in near vertical direction at Xinyi Coal Mine in Henan province, which the failure had taken place for three times successively, ...
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Based on the engineering background of shaft lining shearing failure caused by a fault of drop 7.2 m in near vertical direction at Xinyi Coal Mine in Henan province, which the failure had taken place for three times successively, the paper applied numerical simulated method to study the influence on shaft lining stress by fault and brought forward shaft lining reinforcing measures for shaft safety. The numerical simulation reinforcing plan main included that different concrete strength, different shaft lining thickness, one eighth part circle of shaft lining reinforced by mesh steel near fault and all shaft lining reinforced by mesh steel. The simulation results of comparatively kinds of reinforcing schemes show that adding the thickness of shaft lining, increasing concrete strength and setting different reinforcement measures can all effectively improve the horizontal bearing capacity of shaft lining, especially, adding the thickness of shaft lining. Optimized results show that the scheme of the shaft lining thickness is 450mm, concrete strength C40 and one eighth part circle of shaft lining reinforced by mesh steel near fault should be used in shaft lining construction at depth 410-460m and the scheme of the shaft lining thickness is 600mm, concrete strength C40 and mine steel bar should be used in shaft lining construction below depth 460m.
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The meanings and contents of the vehicular networks simulation research are addressed. By the discussion of self-organization characteristics and the interaction between a large numbers of self-organizing vehicles, a new vehicle m...
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The meanings and contents of the vehicular networks simulation research are addressed. By the discussion of self-organization characteristics and the interaction between a large numbers of self-organizing vehicles, a new vehicle mobility model based on the true scene of the participants is proposed that is P-AOC modeling method. It aims to obtain a more profound comprehension of the complex behavior working mechanism of the vehicle in the VANET environment and be able to faithfully reproduce the real VANET scene. The emergent behavior and sudden existing behaviors of VANET entities are well reflected and this helps for safety driving and warning timely.
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VRML has already become the standard for the distribution of 3D virtual worlds on the Internet. Modeling the ancient architecture system is one of the important contents of virtual reality technology, which has a broad prospect fo...
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VRML has already become the standard for the distribution of 3D virtual worlds on the Internet. Modeling the ancient architecture system is one of the important contents of virtual reality technology, which has a broad prospect for application in the fields of architecture, tourism, military and computer game design. This paper firstly introduces the principle of virtual reality modeling language VRML, analyzes its operating principle and basic elements. Then it introduces the process of system design and realization including developing tools, whole model establishing, collision detecting, effect romancing, file optimizing, scene combining and system releasing. Finally, the ancient architecture system constructs taking Fragrance Hill as the background and introduces the web-browse module and the optimization mode of the scene.
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摘要 :
VRML has already become the standard for the distribution of 3D virtual worlds on the Internet. Modeling the ancient architecture system is one of the important contents of virtual reality technology, which has a broad prospect fo...
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VRML has already become the standard for the distribution of 3D virtual worlds on the Internet. Modeling the ancient architecture system is one of the important contents of virtual reality technology, which has a broad prospect for application in the fields of architecture, tourism, military and computer game design. This paper firstly introduces the principle of virtual reality modeling language VRML, analyzes its operating principle and basic elements. Then it introduces the process of system design and realization including developing tools, whole model establishing, collision detecting, effect romancing, file optimizing, scene combining and system releasing. Finally, the ancient architecture system constructs taking Fragrance Hill as the background and introduces the web-browse module and the optimization mode of the scene.
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In view of the high temperaturepsilas stability of the SAW tap delay line requested and the lower precision questions and so on, a new method is put forward to apply a new multi-element logic circuit based on FPGA in IF delay line...
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In view of the high temperaturepsilas stability of the SAW tap delay line requested and the lower precision questions and so on, a new method is put forward to apply a new multi-element logic circuit based on FPGA in IF delay line in spreading spectrum communication. The scheme is given to design the numerical control one-way analog scanning switch, the key component in the delay line. The simulation result indicates that the system can realize the function of the analog/digit IF signal numerical control delay, and reduce the circuit's complexity greatly. It is prossessed of the advantages of precise delay time, wider bandwidth and lower price. Especially, the shorter delay time and the wider bandwidth enable this design method to apply in higher communication speed easily.
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Technology of Virtual Random Walk in building environment is one of the important contents of Virtual Reality Technology, which has a broad prospect for application in the fields of architecture, tourism, military and computer gam...
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Technology of Virtual Random Walk in building environment is one of the important contents of Virtual Reality Technology, which has a broad prospect for application in the fields of architecture, tourism, military and computer game design. This paper introduces the principle of Virtual Reality Modeling Language VRML, analyzes its operating principle and basic characteristics. Then it introduces some related technologies of the ancient cultural sites of the virtual roaming system. It introduces in detail three-dimensional modeling steps and methods including geometric modeling, physical modeling and Behavioral Modeling. Then, it give a detailed analysis of the key technology and the program realization of the ancient architecture of the virtual roaming system with the construction of Miaofeng Mountain as the background. Finally, it introduces the web-browse module and the optimization mode of the scene.
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This paper first introduces the principle of mobile IPv6 with the Mobile Node, Communication Node and Home Agent, illuminates the operating process when it moves from the home chain-circuit and designs the module structure that wa...
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This paper first introduces the principle of mobile IPv6 with the Mobile Node, Communication Node and Home Agent, illuminates the operating process when it moves from the home chain-circuit and designs the module structure that was disassembled into smaller ones for different function. Secondly, IP working process can be logically divided into three subsystem that are home agent subsystem, mobile node one and mobile communication one and realizes the IPv6 protocol stack for mobile characteristic by cooperating with each other. Then a design scheme is brought based on the real-time embedded operating system of Vxworks including software and hardware. Finally a mobile IPv6 protocol testing program is practiced in the protocol stack software system and the result shows that achieve the expectant effect.
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摘要 :
Technology of Virtual Random Walk in building environment is one of the important contents of Virtual Reality Technology,which has a broad prospect for application in the fields of architecture,tourism,military and computer ga...
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Technology of Virtual Random Walk in building environment is one of the important contents of Virtual Reality Technology,which has a broad prospect for application in the fields of architecture,tourism,military and computer game design.This paper introduces the principle of Virtual Reality Modeling Language VRML, analyzes its operating principle and basic characteristics.Then it introduces some related technologies of the ancient cultural sites of the virtual roaming system.It introduces in detail three-dimensional modeling steps and methods including geometric modeling, physical modeling and Behavioral Modeling. Then,it give a detailed analysis of the key technology and the program realization of the ancient architecture of the virtual roaming system with the construction of Miaofeng Mountain as the background.Finally,it introduces the web-browse module and the optimization mode of the scene.
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