Search

As an important carrier for cultivating engineering practice ability and innovation entrepreneurship spirit of students majoring in civil engineering, the virtual simulation and numerical modeling platform for underground engineering experiment teaching is of vital necessary to its own construction. In the important strategic opportunity period of building local high-level universities, combined with the existing resources of the national equipment manufacturing virtual simulation experimental teaching center in University of Shanghai for Science and Technology, the significance for the construction of the virtual simulation and numerical modeling platform for underground engineering experiment teaching is analyzed. The current situation of underground engineering experimental teaching resources in the Department of Civil Engineering is also analyzed. The shortcomings and problems in the experimental teaching are pointed out. The necessity and urgency for constructing virtual simulation and numerical modeling platform for experimental teaching are explained. The basic ideas and methods for constructing virtual simulation and numerical modeling platform are elaborated from four aspects the platform is closely combined with numerical simulation software of underground engineering, and the three-dimensional visualization software of underground engineering, and the close integration of school-enterprise cooperation base and practical resources, and the close integration of teachers' resources and laboratory team construction, so as to promote the characteristic construction in underground engineering, and provide a solid foundation for the national and Shanghai personnel training in strategic fields. [ABSTRACT FROM AUTHOR]

In this paper the development of the hardware in-the-loop simulation (HILS) test bench for the control system of dry dual clutch transmission (DCT) is presented. Firstly, the dynamics differential equations for a serf-developed 5-speed dry DCT under different operation conditions is established, and a real-time simulation model for DCT vehicle is built with MATLAB/Simulink/Stateflow/RTW and dSPACE software/hardware system. Then the hardware of transmission control unit (TCU) for dry DCT is made with corresponding software developed and loaded into TCU to realize the online calibration and signal measurement for the control parameters of TCU. Next, the dual clutch and shifting actuator for test bench is developed and integrated with the real-time simulation model for DCT vehicle, and so the construction of HILS test bench for dry DCT control system is completed. Finally a continuous acceleration test at different throttle openings is conducted on the test bench. The results show that compared with real vehicle testing, the HILS test bench developed for dry DCT control system not only has better test repeatability but also can quickly and effectively verify the control performance of DCT under different operation conditions, and provide feasible test/evaluation platform for the development of DCT control system. [ABSTRACT FROM AUTHOR]