机构

• 长春光学精密机械与物... [2]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [2]

发表日期

• 2010 [1]
• 2007 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2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 Design and test of focusing mechanism of space camera (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Li Y.;  Li Y.;  Li Y.;  Wang H.;  Wang H. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 According to the focal depth and work environment of a space camera  a focusing mechanism is designed  which consists of precision screw ball transmission and linear bearing guidance and accuracy improving. The dynamic- strike- resistance  adaptability to temperature and vacuum are considered into the reliable design method. Furthermore  the linearity error  the structure stability and the mechanism work situation in high and low temperature are tested. The result is that the linearity error of the mechanism is less than 0.003 mm  and the sway error of vertical way and level way of the mirror is less than 20''. The linearity error of the mechanism and the sway error of the mirror remain unchanged after vibration test. The mechanism can work in the complex space environment. 2010 SPIE.   Robust optimal control technology for four-wheel steering vehicle (EI CONFERENCE) 会议论文  OAI收割 2007 IEEE International Conference on Mechatronics and Automation, ICMA 2007, August 5, 2007 - August 8, 2007, Harbin, China Zhang R.-H.; Cheng G.-Y.; Wang G.-Q.; Jia H.-G.; Chen T. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 Establish the two degree of freedom model of four-wheel steering vehicle. A H2 optimal controller and Kalman filter is designed when the control mathematics model is certainty. Aim at the parameter uncertainty of tire  a four-wheel vehicle steering system uncertain model was founded and analyzed. A H optimal controller is designed with the method of H control theory to solve the problem about model uncertainty. The simulation results show that the controller designed by the proposed method has good robustness  it can easily attenuate the model uncertainty and also has the strong ability to resist the disturbance. 2007 IEEE.  adaptability and stability