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浏览/检索结果: 共34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 Metal-based additive manufacturing condition monitoring methods: From measurement to control 期刊论文  OAI收割 ISA TRANSACTIONS, 2022, 卷号: 120 作者:  Lin, Xin;  Zhu, Kunpeng;  Fuh, Jerry Ying Hsi;  Duan, Xianyin   |  收藏  |  浏览/下载：51/0  |  提交时间：2022/05/16 Metal-based additive manufacturing  Condition monitoring  Measurement and control  Machine learning   A novel vibration measurement and active control method for a hinged flexible two-connected piezoelectric plate 期刊论文  OAI收割 Mechanical Systems and Signal Processing, 2018, 卷号: 107, 页码: 357-395 作者:  Liu JG(刘金国);  Wang, Xianfeng;  Qiu ZC(邱志成);  Zhang XM(张宪民)   |  收藏  |  浏览/下载：25/0  |  提交时间：2018/03/25 Piezoelectric flexible hinged plate  Active vibration control  Binocular vision measurement  Image processing  RBFNNC algorithm  Decoupling on measurement of the bending and torsional vibration   Feedforward Control for Wind Turbine Load Reduction with Pseudo-LIDAR Measurement 期刊论文  OAI收割 International Journal of Automation and Computing, 2018, 卷号: 15, 期号: 2, 页码: 142-155 作者:  Jie Bao;  Hong Yue;  William E. Leithead;  Ji-Qiang Wang   |  收藏  |  浏览/下载：13/0  |  提交时间：2021/02/23 Wind turbine control  light detection and ranging (LIDAR) measurement  feedforward control  load reduction  gain scheduling  disturbance rejection.   Controls on matrix permeability of shale samples from Longmaxi and Niutitang formations, China 期刊论文  OAI收割 JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, 2016, 卷号: 33, 页码: 599-610 作者:  Qu, Hongyan;  Pan, Zhejun;  Peng, Yan;  Zhou, Fujian   |  收藏  |  浏览/下载：17/0  |  提交时间：2018/06/05 Matrix permeability  Longmaxi and Niutitang shale  Pressure-decay permeability measurement  Geological and geochemical control  Pore-size distribution  Permeability-porosity model   Error analysis of the micro temperature control system (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China Han Z.; Song K. 收藏  |  浏览/下载：48/0  |  提交时间：2013/03/25 In order to improve the measurement accuracy of optical detection instruments  temperature control circuits for narrow band-pass filters are given  and the error analysis is applied to temperature control circuits.The principle of a temperature measurement circuit is studied and the method of a driver circuit is described. A variety of influencing factors of temperature control accuracy are discussed. Moreover  for these error factors  improvement measures are given to reduce the nonlinear error. Finally  circuit parameter error is quantified to propose a calculation method for margin of error in a temperature control system. (2013) Trans Tech Publications  Switzerland.   Data normalization of single camera visual measurement network system (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Information Technology and Management Innovation, ICITMI 2012, November 10, 2012 - November 11, 2012, Guangzhou, China 作者:  Zhang Y.-C.;  Zhou J. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 With the development of visual measurement system  Normalize the measured coordinates into the same world coordinate system  Apply in the three coordinate measuring machine(CMM) to have the simulation experiment  So the data normalization has the advantage of more high precision. (2013) Trans Tech Publications  the visual measurement system of single camera which applied in the imaging theory of optical feature points  then get the global data  the result indicates that the maximum absolute tolerance between the normalization coordinates via the center of point set and the ones measured by CMM directly is 0.058mm  Switzerland.  it has been widespread used in the modern production. Due to the limit of the environment in scene  and achieve the overall measurement  the visual measurement system of single camera could not measure the shield between the measured objects each other. Focus on this problem  But the one between the coordinate repeatedly measured at the position of one network control point is 0.066mm  present a kind of the the knowledge of measurement network based on the visual measurement of single camera  set up the measurement network system via the multi-control points. Measure the optical feature points in every network control point via the visual measurement system of single camera   Visual measurement and control for underwater robots: A survey 会议论文  OAI收割 25th Chinese Control and Decision Conference, Guiyang, China, 2013 作者:  Sun Feihu;  Yu Junzhi;  Xu De 收藏  |  浏览/下载：100/0  |  提交时间：2017/01/23 Visual measurement and control  Underwater robots  Embedded vision  Bio-robotics.   The research of round raster readheads scheme (EI CONFERENCE) 会议论文  OAI收割 3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012, March 27, 2012 - March 29, 2012, Xiamen, China Cong J.-F. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 The round raster is extensively applied in all kinds of high accuracy angular displacement measurement and control system. With the development of precise mechanotronics measuring instrument  machining center  CNC machine and various precise location testing technology  a higher request is put forward to the accuracy and the function of raster measurement system. In this article it is concluded that double readheads is the most reasonable configuration scheme through tests of single readhead scheme  two readheads and four readheads. (2012) Trans Tech Publications.   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：35/0  |  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).   The research on adaptive measurement of angular acceleration for photoelectric servo turntable (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China 作者:  Guo J.;  Chen J.;  Guo J. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 The paper proposes a new measurement method of angular acceleration for photoelectric servo turntable. Piezoelectric angular acceleration sensor is used to measure angular acceleration directly  Adaptive FIR filter based on LMS algorithm is established on DSP  by which angular acceleration signal can be filtered and corrected errors adaptively  then angular acceleration signals can be measured adaptively. This method avoids measurement errors and calculation noise by computing angular acceleration indirectly  thus improving measurement precision and making measurement results better than traditional methods. The gotten angular acceleration can be sent to servo control mechanism as feed forward control signals to improve control effects of servo turntable significantly. 2011 IEEE.