中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共7条，第1-7条

帮助

条数/页：排序方式：
	Advances in Hydraulic Fracture Propagation Research in Shale Reservoirs 期刊论文 OAI收割 MINERALS, 2022, 卷号: 12, 期号: 11, 页码: 24 作者: Gong, Xun; Ma, Xinhua; Liu, Yuyang; Li, Guanfang \| 收藏 \| 浏览/下载：30/0 \| 提交时间：2023/03/31 fracture stimulated artificial fracture physical model experiment numerical simulation
	Oil charging pore throat threshold and accumulation effectiveness of tight sandstone reservoir using the physical simulation experiments combined with NMR 期刊论文 OAI收割 JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2022, 卷号: 208, 页码: 12 作者: Li, Chaozheng; Liu, Guangdi; Cao, Zhe; Sun, Mingliang; You, Yuan \| 收藏 \| 浏览/下载：57/0 \| 提交时间：2021/11/01 Reservoir type Pore throat threshold Physical simulation experiment Oil charging Accumulation effectiveness
	Physical Simulation on Failure around a Circular Cavern in Hard and Brittle Rock under High and Increasing Natural Stress Conditions 期刊论文 OAI收割 JOURNAL OF ENGINEERING MECHANICS, 2014, 卷号: 140, 期号: 2, 页码: 332-344 作者: Bai, Shiwei; Chen, Luwang; Yin, Xiaoxi \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2018/06/05 Rock mechanic Model tests Experimentation Material failures Parameters Simulation Rock mechanic Model test Physical model material Numerical experiment Failure Yielding parameters
	A new approach to realize UART (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China 作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 In order to connect DSP which has synchronous serial ports to the devices implementing asynchronous communications protocol a method to implement UART communications based on programmable logic device is proposed in the paper. In the proposed method the core function of UART is integrated in CPLD with VHDL. Firstly UART data frame format and operational principle of UART were introduced after reviewing some methods to realize UART. The methods to implement UART transmitter UART receiver and baudrate generator using VHDL were illustrated in detail. Then pre-simulation and synthesize of VHDL program were executed. Finally the test with bit error rate was carried out on physical system. Experimental results indicate that 75 percent of the GLB are used by UART and the bit error rate is less than 109. The experiment was implemented utilizing the RS-422 protocol and the baudrate is 62.5kb/s. The proposed method can satisfy the system requirements of high integration stabilization low bit error rate strong anti-jamming and low cost. 2011 IEEE.
	The design of real-time monitoring the electromechanical actuator operation state based on the CANoe (EI CONFERENCE) 会议论文 OAI收割 2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China 作者: Zhang J.; Wu D.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 In order to realize the real-time state data monitor of the electromechanical actuator(EMA) the EMA and other subsystem establish a ground half physical experiment simulation platform based on the CAN bus. The CANoe software decodes the received EMA CAN data and showes the result in the image window. The decoding data contains the EMA current motor operation state EMA angle and etc. Through these real-time display data the EMA operation state could be monitored and the EMA failure could be located fastly. 2011 IEEE.
	Design of ground-based physical simulation system for satellite-borne TDI-CCD dynamic imaging (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China 作者: Zhang L.; Zhang L.; Sun Z. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 As we know the existence of image motion has a bad effect on the image quality of satellite-borne TDI CCD camera. Although many theories on image motion are proposed to cope with this problem few simulations are done to justify the proposed theories on ground. And thus in this paper a ground-based physical simulation system for TDI CCD imaging is developed and specified which consists of a physical simulation subsystem for precise satellite attitude control based on a 3-axis air bearing table and an imaging and simulation subsystem utilizing area-array CCD to simulate TDI CCD. The designed system could realize not only a precise simulation of satellite attitude control whose point accuracy is above 0.1 and steady accuracy above 0.01/s but also an imaging simulation of 16-stage TDI CCD with 0.1s its integration time. This paper also gives a mathematical model of image motion of this system analogous with satellite-borne TDI CCD and detailed descriptions on the principle utilizing area-array CCD to simulate TDI CCD. It is shown that experiment results are in accordance with mathematical simulation and that the image quality deteriorate seriously when the correspondence between the image velocity and signal charges transfer velocity is broken out which suggest not only the validity of the system design but also the validity of the proposed image motion theory of TDI CCD. 2010 SPIE.
	The simulation of nature gas production from ocean gas hydrate reservoir by depressurization 期刊论文 OAI收割 science in china series e-technological sciences, 2008, 卷号: 51, 期号: 8, 页码: 1272-1282 作者: Bai YuHu; Li QingPing; Li XiangFang; Du Yan 收藏 \| 浏览/下载：8/0 \| 提交时间：2016/10/27 depressurization gas hydrate reservoir numerical simulation physical experiment