Notice of RetractionThe aircraft autopilot design of parameters changing in a wide range

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Autopilot is an important part of aircraft, for the flight parameters of aircraft Changing in a wide range, on the basic of analyzing the typical trajectory, the trajectory of feature points were selected, taking pitch control loop for example, a subPID autopilot was designed using classical control theory, using single-mode Transient suppression method, the overload due to control surface transition deflection was avoided when control parameters changing, the verification was done by non-linear simulation. The result showed that: the phase margin of autopilot was greater than 30°, the bandwidth was more than 14rad / s, the settling time was less than 0.7s, the maximum overshoot was 23.3%; Under the action of the disturbance torque, the range was about 16km, the max height was about 5100m, the deviation of lateral was about 12m, the maximum angle of attack was about 3.6°, the maximum elevator deflection was less than 5°, the maximum aileron deflection was less than 2°, the maximum roll was less than 5°, 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.