Control system and method for fixed-point parking of stratospheric aerostat

Abstract

The invention belongs to the technical field of automatic control, and discloses a control system for fixed-point parking of a stratospheric aerostat. The control system comprises a height maintaining module connected with a vector thrust composite module, and an attitude tracking module; the attitude tracking module is connected with a pitch roll control module; the vector thrust composite module is connected with a nonlinear mapping module; the nonlinear mapping module and the pitch roll control module are connected with a master controller; the master controller is connected with the height maintaining module and the attitude tracking module through a state measuring module; the height maintaining module and the attitude tracking module obtain a relationship between the target height, the attitude and the tracking acceleration through a PID tracking algorithm; the vector thrust composite module and the pitch roll control module obtain the tracking control force and a slider position through a dynamic inverse method; the nonlinear mapping module converts the control force into the magnitude and a corner of each vector thrust; and the state measuring module detects the current state of the aerostat and feeds the current state back to the height maintaining module and the attitude tracking module to implement closed loop control.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a control system and method for fixed-point dwelling of a stratospheric aerostat. Background technique [0002] Stratospheric aerostats fly at a height of 20,000 meters from the ground. As a fixed-point airborne platform, they have the characteristics of a larger observation range than low-altitude aircraft and higher resolution than orbiting satellites. They are suitable for Complete tasks such as communication relay and earth observation, and solar cells are the ideal energy source for long-term space. Therefore, attitude control is very important to enhance the output power of solar cells and improve the effect of earth observation. [0003] Stratospheric aerostats have complex control mechanism configurations: aerodynamic rudder surfaces, vector thrust, front / rear auxiliary airbags, etc. The stratospheric aerostat is a low-thrust-to-weight ratio aerosta...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a control system and method for fixed-point dwelling of stratospheric aerostats, which solves the problems in the prior art such as the lack of attitude control methods for fixed-point dwelling

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