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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2011    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 The technique of camera scan control based on current loop control (EI CONFERENCE) 会议论文 2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China Li Q.; Liu Z. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 As the crucial structure of aerial camera  sca reflector is always requested with high performance of control precision  stable running and rapid responding. The paper introduces a kind of method about current loop control system which is based on position and velocity dual-closed loop control system. This method improves effectively the performance of velocity closed loop control system and amplifies the gain of low frequency. The results show applying these control methods  the influence of the torque ripple has decrease 50% and the compensation rate precsion has promoted double. 2011 IEEE.   The stability design and realization of airborne platform based on TMS320F2812 (EI CONFERENCE) 会议论文 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China Li X.; Li Q.; Zhang X. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 Airborne electro-optical stable platform can isolate movement and vibration of the airframe  stabilizes the optic axis of the photoelectic detector  realize the observation and tracking for the object. It has comprehensive application value in army and cicil field. Most of present airborne platforms are analogic control system  digital control system can improve the system general performance  digital control is the development direction of platform systems. In view of the requirements of isolating disturbances and stabilizing optical axis of high-precision photoelectric guidance system  a three-axis stabilized platform system centering on the rate gyro was designed. The disturbance-isolation theory of the stabilized platform was analyzed and the control structure including multiple closed-loops was designed. At last a controller of the servo system based on TMS320F2812 DSP has been designed. Experiment results meet the technical index and precision requirement  and illustrate the practicability and effectiveness of the scheme. 2011 IEEE.   Effects of cold-rolled deformation on the electrochemical performance of Al anode materials 会议论文 Sanya, China, July 29, 2011 - July 31, 2011 作者:  He, Jun Guang;  Wen, Jiu Ba;  Li, Xu Dong 收藏  |  浏览/下载：0/0  |  提交时间：2020/11/15 Alloys  Aluminum  Anodes  Cold rolling  Corrosion rate  Deformation  Electric discharges  High energy physics  Hydrogen  Metal cladding  Aluminum anode alloy  Anode material  As cast alloy  Cold deformation  Cold rolling reduction  Cold-rolled deformation  Discharge time  Electrochemical performance  Electrochemical test  Hydrogen evolution rate  KOH solution  Metallographic observations