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浏览/检索结果: 共51条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Force measurement using strain-gauge balance in shock tunnel based on deep learning 期刊论文  OAI收割 CHINESE JOURNAL OF AERONAUTICS, 2023, 卷号: 36, 期号: 8, 页码: 43-53 作者:  Nie SJ(聂少军);  Wang YP(汪运鹏);  Jiang ZL(姜宗林)   |  收藏  |  浏览/下载：12/0  |  提交时间：2024/02/26 Convolutional neural net-works  Deep learning  Frequency domain analysis  Force measurement  Time domain analysis  Recurrent neural networks   Torrential flood prevention in the Kolubara river basin 期刊论文  OAI收割 Journal of Mountain Science, 2017, 卷号: 14, 期号: 11, 页码: 2230-2245 作者:  KOSTADINOV Stanimir;  DRAGIĆEVIĆ Slavoljub;  STEFANOVIĆ Tomislav;  NOVKOVIĆ Ivan;  PETROVIĆ M. Ana   |  收藏  |  浏览/下载：19/0  |  提交时间：2017/11/17 Soil Erosion  Torrential Floods  Erosion Control Works  Integrated River Basin Management   基于HyperWorks的遥操作主手构件拓扑优化设计 期刊论文  OAI收割 机电产品开发与创新, 2015, 卷号: 28, 期号: 2, 页码: 7-9 作者:  崔龙 收藏  |  浏览/下载：27/0  |  提交时间：2015/07/05 拓扑优化  变密度法  遥操作主手  轻量化  Hyper Works   1m太阳望远镜光电导行镜无热化分析 期刊论文  OAI收割 应用光学, 2014, 卷号: 35, 期号: 5, 页码: 862-867 作者:  程向明;  邓林华;  柳光乾 收藏  |  浏览/下载：30/0  |  提交时间：2016/04/06 NVST  导行镜  热分析  有限元方法  COSMOS Works   1m太阳望远镜光电导行镜无热化分析 期刊论文  OAI收割 应用光学, 2014, 卷号: 35.0, 期号: 005, 页码: 862 作者:  程向明;  邓林华;  柳光乾   |  收藏  |  浏览/下载：14/0  |  提交时间：2021/12/06 NVST  导行镜  热分析  有限元方法  COSMOS  Works   Debris flow hazards and its mitigation works in Xianbuleng Gully, Jinchuan County, Sichuan Province, China 会议论文  OAI收割 会议: 2nd International Conference on Civil Engineering, Architecture and Building Materials (CEABM 2012), Yantai, PEOPLES R CHINA, 2012-5-25~27 作者:  Liu Jinfeng;  You Yong 收藏  |  浏览/下载：32/0  |  提交时间：2012/12/10 debris flow  mitigation works  Xianbuleng Gully  drainage canal   The design of the data communication and display system based on GeoCOM technology (EI CONFERENCE) 会议论文  OAI收割 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China Geng T.-W.; Wang Z.-Q.; Li D.-N.; Shen C.-W. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 The system is developed for the real-time data processing. The data include the sensor data from TS02 total station and the data from the CCD processing system. It was introduced that the TS02 total station which produced by the Leica company. The GeoCOM application interface which provided by Leica company for the client to exploit it was introduced. The main controller of the system is C8051F021. The protocol of I2C bus is simulated by software. System works in the timing interrupt way. The angle error is calculated and transferred to remote receive device. All data is displayed on LCD. The hardware and software design method is present. The system has been applied to the angle monitor equipment. The system is stable and reliable in practical application. 2012 IEEE.   Design and application of natural audio electric field frequency selecting instrument 会议论文  OAI收割 3rd International Conference on Precision Instrumentation and Measurement 2011, CPIM2011, Xiangtan, China, July 18, 2011 - July 21, 2011 Liao, Xiuying(廖秀英); Cheng, Hui; Bai, Yicheng 收藏  |  浏览/下载：33/0  |  提交时间：2012/05/18 Groundwater resources  Instruments  Measurements  Mineral resources  Software design  System stability  Design and application  Electric field frequency  Electrical structures  Field works  Geological bodies  Geological information  Hardware design  Magnetotelluric soundings  Observe system  Weak signal detection   The sequence measurement system of the IR camera (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China 作者:  Zhang H.-B.;  Han H.-X.;  Geng A.-H. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 Currently  the IR cameras are broadly used in the optic-electronic tracking  optic-electronic measuring  fire control and optic-electronic countermeasure field  but the output sequence of the most presently applied IR cameras in the project is complex and the giving sequence documents from the leave factory are not detailed. Aiming at the requirement that the continuous image transmission and image procession system need the detailed sequence of the IR cameras  the sequence measurement system of the IR camera is designed  and the detailed sequence measurement way of the applied IR camera is carried out. The FPGA programming combined with the SignalTap online observation way has been applied in the sequence measurement system  and the precise sequence of the IR camera's output signal has been achieved  the detailed document of the IR camera has been supplied to the continuous image transmission system  image processing system and etc. The sequence measurement system of the IR camera includes CameraLink input interface part  LVDS input interface part  FPGA part  CameraLink output interface part and etc  thereinto the FPGA part is the key composed part in the sequence measurement system. Both the video signal of the CmaeraLink style and the video signal of LVDS style can be accepted by the sequence measurement system  and because the image processing card and image memory card always use the CameraLink interface as its input interface style  the output signal style of the sequence measurement system has been designed into CameraLink interface. The sequence measurement system does the IR camera's sequence measurement work and meanwhile does the interface transmission work to some cameras. Inside the FPGA of the sequence measurement system  the sequence measurement program  the pixel clock modification  the SignalTap file configuration and the SignalTap online observation has been integrated to realize the precise measurement to the IR camera. Te sequence measurement program written by the verilog language combining the SignalTap tool on line observation can count the line numbers in one frame  pixel numbers in one line and meanwhile account the line offset and row offset of the image. Aiming at the complex sequence of the IR camera's output signal  the sequence measurement system of the IR camera accurately measures the sequence of the project applied camera  supplies the detailed sequence document to the continuous system such as image processing system and image transmission system and gives out the concrete parameters of the fval  lval  pixclk  line offset and row offset. The experiment shows that the sequence measurement system of the IR camera can get the precise sequence measurement result and works stably  laying foundation for the continuous system. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).   Laser pulse coded signal frequency measuring device based on DSP and CPLD (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, May 24, 2011 - May 26, 2011, Beijing, China 作者:  Zhang H.-B.;  Wang T.-F.;  Guo R.-H.;  Li Y.;  Li Y. 收藏  |  浏览/下载：38/0  |  提交时间：2013/03/25 Laser pulse code is an anti-jamming measures used in semi-active laser guided weapons. On account of the laser-guided signals adopting pulse coding mode and the weak signal processing  it need complex calculations in the frequency measurement process according to the laser pulse code signal time correlation to meet the request in optoelectronic countermeasures in semi-active laser guided weapons. To ensure accurately completing frequency measurement in a short time  it needed to carry out self-related process with the pulse arrival time series composed of pulse arrival time  calculate the signal repetition period  and then identify the letter type to achieve signal decoding from determining the time value  number and rank number in a signal cycle by Using CPLD and DSP for signal processing chip  designing a laser-guided signal frequency measurement in the pulse frequency measurement device  improving the signal processing capability through the appropriate software algorithms. In this article  we introduced the principle of frequency measurement of the device  described the hardware components of the device  the system works and software  analyzed the impact of some system factors on the accuracy of the measurement. The experimental results indicated that this system improve the accuracy of the measurement under the premise of volume  real-time  anti-interference  low power of the laser pulse frequency measuring device. The practicality of the design  reliability has been demonstrated from the experimental point of view.