Horizontal Position Control System and Implementation Method of Stratospheric Airship

Abstract

A stratospheric airship horizontal position control system and implementation method, comprising: a horizontal position control module, a weight / buoyancy difference selection module, a pitch control module, a pitch control distribution module, a thrust speed control module and a state measurement module, wherein: the pitch control module According to the instruction tracking speed, the magnitude of the pitching moment is obtained through the pitch angle control algorithm and output to the pitch control distribution module, so as to distribute the pitching moment between the front / rear auxiliary airbags and the elevator, and output to the aircraft. The present invention establishes the ascending and descending scheme of the stratospheric airship on the basis of the thermal model, and proposes a method for controlling the forward speed of the airship by using the pitch angle; in the pitch angle control, the variable weight optimization control strategy of the elevator and the auxiliary airbag is used to realize the pitch control, In the speed control, the pitch angle and the vector thrust are compounded by using the switch distribution method, which effectively utilizes the existing actuator capabilities of the airship, and realizes the forward speed control of the airship under the condition of a strong wind field. The invention is applicable to the horizontal position control in the lifting process of the stratospheric airship.

Description

technical field [0001] The invention relates to a technology in the field of aircraft control, in particular to a control system and a method for controlling the horizontal position during the ascent and descent of a stratospheric airship. Background technique [0002] The stratospheric airship has a giant flexible structure, large envelope, large size, large inertia, and flexible body are the salient features of the system, and has complex control mechanism configurations: pressure / buoyancy system, aerodynamic rudder surface, vector thrust, front / rear Airbag etc. The stratospheric airship is greatly affected by the external environment during its ascent and descent, especially in the 12km windy area, the airship drifts laterally at a speed of 40m / s, and when it rises to an altitude of 20km, if there is no control, the horizontal position of the airship Drift about 20km. Therefore, within a given airspace range, the horizontal position control of the lifting process is ver...

AI Technical Summary

Problems solved by technology

However, this technology does not involve the specific implementation means of the actuator, and does not consider the influence of the wind field on the flight trajectory during the lifting process.

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