The bentonite-water mixture was selected as the substitute of seabed sediments according to the in-situ measurement data of sediments 15-20 cm deep in China's ocean poly-metallic mining contract area and the soft ...The bentonite-water mixture was selected as the substitute of seabed sediments according to the in-situ measurement data of sediments 15-20 cm deep in China's ocean poly-metallic mining contract area and the soft seabed sediments could be simulated with certain proportion of the bentonite and water; besides, based on the theory on the interaction between the vehicle and ground and referenced to Bekker's apparatus and related experimental methods, a scenario on the experimental system of the pressure-sinkage characteristics of interaction between the track of tracked vehicle and soft seabed sediments was designed. The pressure-sinkage experiments were performed with different dimensions of penetration plates. The "pressure-sinkage" model based on Bekker's formula and correlation parameters were obtained to describe the corresponding characteristics of the seabed sediments and a smart calibration model on the pressure-sinkage characteristic of the track was established based on the function chain neural network, which could provide boundary loading conditions for simulation analysis of the tracked vehicle moving on the seabed.展开更多
Today’s vehicles use electronic control units(ECU) to control engine/transmission, body and other amenities. All the vehicle performance depends on a lot of physical values and influence factors. This leads to a larg...Today’s vehicles use electronic control units(ECU) to control engine/transmission, body and other amenities. All the vehicle performance depends on a lot of physical values and influence factors. This leads to a large number of control and regulation parameters in the ECU software. The ultimate objective of calibration work is the optimum determination of these parameters. Qualitatively excellent results can only be achieved in a shorter time by using a highly efficient calibration system. This paper provided an overview of a new calibration tool based on KWP2000 and gave an example calibration with this tool.展开更多
This paper reviews virtual reality interface, application and design concept in relation with our experience in implementing a virtual bicycling environment application of the University of Indonesia Green Eco-campus....This paper reviews virtual reality interface, application and design concept in relation with our experience in implementing a virtual bicycling environment application of the University of Indonesia Green Eco-campus. The implementation of the Virtual Reality VR used 3D-Games Studio with Lite-C software. The authors also experiment with the use of a VR device, i.e. 3D E-Dimensional wireless goggle to improve the feel of presence for the user of our application. The authors created the original elements of UI campus environment, such as, buildings, trees, campus buses, cars, and bike tracks, as well as obstacle in the pathways into 3D virtual shape that resembles the real UI campus environment. The bicycle movement, camera perceptions, and object collision handling have also been implemented. Our application is subsequently tested by the users in terms of the general object condition, user＇s respond to the virtual reality environment and the future development. Some result of implementing the same environment using Alice has also been shown.展开更多
基金Project(11JJ3059) supported by Natural Science Foundation of Hunan Province, ChinaProject(2010GK3091) supported by Science and Technology Industrial Support Program of Hunan Province, China+1 种基金Project(10B058) supported by Excellent Youth Foundation of Education Department of Hunan Province, ChinaProject(51105386) supported by the National Natural Science Foundation of China
文摘The bentonite-water mixture was selected as the substitute of seabed sediments according to the in-situ measurement data of sediments 15-20 cm deep in China's ocean poly-metallic mining contract area and the soft seabed sediments could be simulated with certain proportion of the bentonite and water; besides, based on the theory on the interaction between the vehicle and ground and referenced to Bekker's apparatus and related experimental methods, a scenario on the experimental system of the pressure-sinkage characteristics of interaction between the track of tracked vehicle and soft seabed sediments was designed. The pressure-sinkage experiments were performed with different dimensions of penetration plates. The "pressure-sinkage" model based on Bekker's formula and correlation parameters were obtained to describe the corresponding characteristics of the seabed sediments and a smart calibration model on the pressure-sinkage characteristic of the track was established based on the function chain neural network, which could provide boundary loading conditions for simulation analysis of the tracked vehicle moving on the seabed.
文摘Today’s vehicles use electronic control units(ECU) to control engine/transmission, body and other amenities. All the vehicle performance depends on a lot of physical values and influence factors. This leads to a large number of control and regulation parameters in the ECU software. The ultimate objective of calibration work is the optimum determination of these parameters. Qualitatively excellent results can only be achieved in a shorter time by using a highly efficient calibration system. This paper provided an overview of a new calibration tool based on KWP2000 and gave an example calibration with this tool.
文摘This paper reviews virtual reality interface, application and design concept in relation with our experience in implementing a virtual bicycling environment application of the University of Indonesia Green Eco-campus. The implementation of the Virtual Reality VR used 3D-Games Studio with Lite-C software. The authors also experiment with the use of a VR device, i.e. 3D E-Dimensional wireless goggle to improve the feel of presence for the user of our application. The authors created the original elements of UI campus environment, such as, buildings, trees, campus buses, cars, and bike tracks, as well as obstacle in the pathways into 3D virtual shape that resembles the real UI campus environment. The bicycle movement, camera perceptions, and object collision handling have also been implemented. Our application is subsequently tested by the users in terms of the general object condition, user＇s respond to the virtual reality environment and the future development. Some result of implementing the same environment using Alice has also been shown.
