Horizontal position control system for stratospheric airship as well as implementing method

Abstract

The invention discloses a horizontal position control system for a stratospheric airship as well as an implementing method. The horizontal position control system comprises a horizontal position control module, a gravity / buoyancy difference selection module, a pitching control module, a pitching control distribution module, a thrust velocity control module and a state measurement module, wherein the pitching control module obtains pitching moment and outputs the pitching moment to the pitching control distribution module with a pitching angle control algorithm according to the instruction tracing speed, so that the pitching moment can be distributed between a front / rear balloonet and an elevator and output to an aircraft. Rise and fall schemes for the stratospheric airship are established on the basis of a thermal model, and a method for controlling the forward velocity of the airship through a pitching angle is provided; an elevator and balloonet variable-weight optimal control strategy is adopted in pitching angle control to realize pitching control, a switch distribution method is adopted in velocity control to combine the pitching angle with vectored thrust, the capacity of the existing actuator of the airship is used effectively, and forward velocity control of the airship in a strong-wind field is realized. The horizontal position control system is applied to horizontal position control of the stratospheric airship in the rise and fall processes.

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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