An Aircraft Overload Tracking Method Using Calibration Networks Instead of Angular Accelerometers

Abstract

The invention relates to an aircraft overload tracking method using a correction network instead of an angular accelerometer, and belongs to the technical field of aircraft control. First, the linear accelerometer is used to measure the lateral overload of the aircraft, and the overload error is obtained by comparing with the overload command, and then the integral and nonlinear transformation are carried out to obtain the nonlinear comprehensive signal. Secondly, the correction signal of the error signal is obtained from the difference equation, the nonlinear integral signal is obtained from the nonlinear transformation, and then the overload error signal is superimposed to form a linear synthesis signal. Again, the angular rate signal of the aircraft is measured by the gyroscope; the correction network is constructed to realize the replacement signal of the angular acceleration; the nonlinear signal of the angular rate is obtained by nonlinear transformation, and the correction comprehensive signal is composed of the three. Finally, the expected yaw angle signal of the aircraft is composed of three types of integrated signals, which drive the attitude stabilization loop to track and realize overload tracking. This method can realize aircraft overload control without using angular accelerometer.

Description

technical field [0001] The invention belongs to the field of aircraft control, and in particular relates to a flight control system design method for aircraft attitude stabilization and overload tracking, and a control method using a correction network instead of an angular accelerometer. Background technique [0002] Although overload control is far from being widely used in most aircraft like traditional attitude stabilization control, overload control has been well applied in many unmanned aerial vehicles with high maneuverability requirements. Among the various overload control methods, the angular accelerometer and overload measurement schemes account for a part, but the angular acceleration measurement has two disadvantages. One is that the angular acceleration of the aircraft changes very quickly, and it is difficult to measure it accurately. The other is that the use of angular accelerometers also greatly increases the control cost, which makes many low-cost small un...

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Problems solved by technology

[0004] The object of the present invention is to provide an aircraft overload tracking method that uses a calibration network instead of an angular accelerometer, and then at least to a certain extent overcomes the difficulty of accurately measuring the angular accelerometer due to the limitations and defects of the related technology, and can reduce the number of aircraft. The Economic Cost of Overload Control

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