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科研机构
理论物理研究所 [1]
长春光学精密机械与物... [1]
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会议论文 [1]
期刊论文 [1]
发表日期
2011 [2]
学科主题
Physics [1]
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Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay
期刊论文
NUCLEAR PHYSICS B, 2011, 卷号: 843, 期号: 1, 页码: 143-176
Bell, G
;
Beneke, M
;
Huber, T
;
Li, XQ
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浏览/下载:18/0
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提交时间:2013/05/17
COLLINEAR EFFECTIVE THEORY
MESON FORM-FACTORS
B DECAYS
VERTEX CORRECTIONS
QCD FACTORIZATION
STANDARD MODEL
PHOTON ENERGY
2-LOOP RESULT
LARGE RECOIL
QUARK
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.
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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%
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