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浏览/检索结果: 共8条，第1-8条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Hybrid Digital Control of Dual Buck Half Bridge Inverter 会议论文 作者:  Lin, Qiongbin;  Lu, Zhigang;  Nian, Ping;  Zeng, Xinglan;  Wang, Wu 收藏  |  浏览/下载：4/0  |  提交时间：2019/11/21 DBHBI  hybrid PWM  component  distortion of dynamic process   Development and Alignment for SiC Mirror Subsystem of a space-borne telescope 会议论文 international symposium on advanced optical design and manufacturing technologies / international symposium on astronomical telescope and instrumentation, beijing, peoples r china, 2016-05-09 作者:  Feng Liang-jie;  Wang Wei;  Ren Gruo-rui 收藏  |  浏览/下载：25/0  |  提交时间：2017/03/20 Space-borne telescope  SiC mirror  bipod flexure  optical surface distortion  curing stress   Research based on the acoustic emission of wind power tower drum dynamic monitoring technology 会议论文 Shanghai, China, October 30, 2013 - November 2, 2013 作者:  Zhang, Penglin;  Sang, Yuan;  Xu, Yaxing;  Zhao, Zhiqiang 收藏  |  浏览/下载：2/0  |  提交时间：2020/11/15 Cracks  Damage detection  Losses  Personnel testing  Tensile testing  Towers  Wind power  Acoustic emission signal  Acoustic emission sources  Dynamic monitoring  Non destructive testing  Process of manufacture  Science and Technology  Teaching materials  Working environment   Research Based on the Acoustic Emission of Wind Power Tower Drum Dynamic Monitoring Technology 会议论文 作者:  Zhang, Penglin;  Sang, Yuan;  Xu, Yaxing;  Zhao, Zhiqiang 收藏  |  浏览/下载：7/0  |  提交时间：2019/11/15 Real-time detection and control of torch-height in waveform controlled short-circuit CO2 arc welding 会议论文 ADVANCED WELDING AND MICRO JOINING / PACKAGING FOR THE 21ST CENTURY, International Welding/Joining Conference-Korea (IWJC-Korea 2007), Seoul, SOUTH KOREA, Web of Science Zhu, Zhiming 收藏  |  浏览/下载：4/0 Optimal multiresolution dynamic models generation based on triangle importance (EI CONFERENCE) 会议论文 2nd International Conference on Image Analysis and Signal Processing, IASP'2010, April 12, 2010 - April 14, 2010, Xiamen, China Zhang S.; Wu Y.; Zhao J. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 In this paper  we propose an efficient method to generate optimal multiresolution dynamic models. By the method  we define the triangle importance degree as a weight parameter to be embedded to the edge contraction cost  so the new metric can not only measure distance error but also reflect geometric variation of local areas. A deformation degree weight is appended to the aggregated edge contraction cost for the whole animation  thus sharp features on areas with large deformation can be preserved. In addition  a process of mesh optimization and validity check can further alleviate the geometric distortion of the approximations. Our approach is efficient in operation  easy for implementation  and as a result high quality of dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.   A local feature based simplification method for animated mesh sequence (EI CONFERENCE) 会议论文 2010 2nd International Conference on Computer Engineering and Technology, ICCET 2010, April 16, 2010 - April 18, 2010, Chengdu, China Zhang S.; Zhao J.; Wang B. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 Although animated meshes are frequently used in numerous domains  only few works have been proposed until now for simplifying such data. In this paper  we propose a new method for generating progressive animated models based on local feature analysis and deformation area preservation. We propose the use of solid angle and height value for a non-hyperbolic vertex to define the local feature parameter. This local factor is embedded to the vertex quadric error matrix when calculating the edge collapse cost. In order to preserve the areas with large deformation  we add deformation degree weight to the aggregated quadric errors when computing the unified edge contraction sequence. Finally  a mesh optimization process is proposed to further reduce the geometric distortion for each frame. Our approach is fast  easy to implement  and as a result good quality dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.   Animated models coarsening with local area distortion and deformation degree control (EI CONFERENCE) 会议论文 International Conference on Image Processing and Pattern Recognition in Industrial Engineering, August 7, 2010 - August 8, 2010, Xi'an, China Zhang S.; Wu Y.; Zhao J. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 In computer graphics applications  mesh coarsening is an important technique to alleviate the workload of visualization processing. Compared to the extensive works on static model approximation  very little attentions have been paid to animated models. In this paper  we propose a new method to approximate animated models with local area distortion and deformation degree control. Our method uses an improved quadric error metric guided by a local area distortion measurement as a basic hierarchy. Also  we define a deformation degree parameter to be embedded into the aggregated quadric errors  so areas with large deformation during the animation can be successfully preserved. Finally  a mesh optimization process is proposed to further reduce the geometric distortion for each frame. Our approach is fast  easy to implement  and as a result good quality dynamic approximations with well-preserved sharp features can be generated at any given frame. 2010 SPIE.