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浏览/检索结果: 共4条，第1-4条 帮助 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 Fractional Order Modeling and Control of Twin Rotor Aero Dynamical System using Nelder Mead Optimization 期刊论文 JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, 2016, 卷号: 11, 页码: 1863-1871 作者:  Ijaz, Salman;  Hamayun, Mirza Tariq;  Yan, Lin;  Mumtaz, Muhammad Faisal 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/30 Fractional order controller  Twin rotor  Nelder-Mead optimization  Classical PID   The aircraft autopilot design of parameters changing in a wide range (EI CONFERENCE) 会议论文 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China Zhen D.; Yue Z. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 Autopilot is an important part of aircraft  Under the action of the disturbance torque  for the flight parameters of aircraft Changing in a wide range  the range was about 16km  on the basic of analyzing the typical trajectory  the max height was about 5100m  the trajectory of feature points were selected  the deviation of lateral was about 12m  taking pitch control loop for example  the maximum angle of attack was about 3.6  a sub- PID autopilot was designed using classical control theory  the maximum elevator deflection was less than 5  using single-mode Transient suppression method  the maximum aileron deflection was less than 2  the overload due to control surface transition deflection was avoided when control parameters changing  the maximum roll was less than 5  the verification was done by non-linear simulation. The result showed that: the phase margin of autopilot was greater than 30  the response of overload can accurately track the given overload instruction. An autopilot design method of aircraft of parameter changes in a wide range was provided. 2011 IEEE.  the bandwidth was more than 14rad / s  the settling time was less than 0.7s  the maximum overshoot was 23.3%   Control strategies and error compensation methods of high precision gyro stabilized platform (EI CONFERENCE) 会议论文 30th Chinese Control Conference, CCC 2011, July 22, 2011 - July 24, 2011, Yantai, China Deng K.; Cong S.; Shen H. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Based on the principle of gyroscope and the structure of gyro stabilized platform  this paper gives the analysis and comparison of control strategies for stable platform included classical PID control  and three kinds of advanced strategies: Fuzzy Control  Sliding Mode Variable Structure Control and Active Disturbance Rejection Control. The compensation methods for stable platform's error are also discussed and evaluated based on the sources of error  especially for the non-linear friction and gyro drift. The paper provides the reliable methods for recognizing and improving the accuracy of gyro stabilized platform from the control strategies and error compensations. 2011 Chinese Assoc of Automation.   Nonlinear control design for system with mechanical resonance based on two tracking-differentiators (EI CONFERENCE) 会议论文 2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010, August 4, 2010 - August 7, 2010, Xi'an, China Huang P.; Ge W.; Li J.; Xiu J.; Li Y.; Chen L. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 A nonlinear control strategy for controlling a motion system with mechanical resonance is presented in this paper. A mathematical model of the servo system is derived according to the parameters of an actual system. By using two Tracking-Differentiators  reference input and system output are tracked and their differential signals are given simultaneously. A nonlinear PD control law in velocity loop is designed based on non-smooth feedback. The simulation results show that the control law is superior remarkably in performance to linear PD control law and the classical PID control law. Tracking-Differentiator resolves the contradiction between rapidity and overshoot of system response. The nonlinear PD control law improves system dynamic performance and intensifies the ability of disturbance rejection. The control design achieved in this paper makes the servo system more robust. 2010 IEEE.