中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	Dynamic characteristics and stability of flexible riser under consideration of non-uniform tension and internal flow 会议论文 OAI收割 3 August 2020 through 7 August 2020 作者: Yan DS(严定舜); Guo SX(郭双喜); Li Y; Song J; Li M \| 收藏 \| 浏览/下载：13/0 \| 提交时间：2021/06/11 Dynamic characteristics and stability Fluid-conveying riser Fluid-solid coupling Non-uniform tension
	Lightweight design and analysis of support structure of certain UAV engine (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China Xing X.; Liu B.; Han X.; Jia H. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 Support structure of UAV (Unmanned Aerial Vehicle) engine is the important support for UAV engine playing a support role and bearing extremely complex load so its lightweight strength and dynamic characteristics have a great influence on high performance of UAV. This paper focuses on UAV having the requirement of high performance and stability to the support structure of engine and uses the software of MSC.Patran and MSC.Nastran and topology optimization criterion to lightweight design and analysis the support structure of UAV engine under the premise condition of existing constraints. Then the static strength and modal are analyzed for the result of lightweight design and the strength of the model and dynamic characteristics are verified. (2012) Trans Tech Publications Switzerland.
	Adaptive control at launching using three loop autopilot (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 In order to guarantee the precise initial flight trajectory control the missile disturbance of large disturbance torque three loop adaptive autopilot was researched. The characteristics of the projectile and three loop autopilot instruction formation characteristics were analysed. From equivalent pitching angle of lateral acceleration feedback loop combined with the instruction of generalized error autopilot structure was simplified and three loop autopilot adaptive control law and stability were designed. The test data show that when disturbance torque was 600Nm the attitude angle generalized error was -4.4. In the time lasted about 15s late trajectory accuracy was within 1.0.Three loop autopilot adaptive control law was able to control the disturbance of initial trajectory and adapt to dynamic characteristics changes control system stability. It was the initial trajectory accurate solution method of flight. 2011 IEEE.
	A high-precision fuzzy control algorithm with self-regulating factor for thermo therapy of tumor (EI CONFERENCE) 会议论文 OAI收割 2007 IEEE International Conference on Control and Automation, ICCA, May 30, 2007 - June 1, 2007, Guangzhou, China Bidou W.; Yueyan C.; Qingfeng M.; Hong J. C. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 In this paper we present a new thermo therapy of tumor control algorithm in which a self-regulation factor is adopted to realize real-time temperature control with high-precision fuzzy controller. This method can not only realize the real-time control with ignoring influence of impedance parameters but also enhance the stability and dynamic characteristics of the control system and the performance of the radio-frequency thermo therapeutic equipment is enhanced. We have demonstrated this strategy is feasible and effective based on the experiment researches of liver tumor thermo therapy 2007 IEEE.