Civil aircraft auxiliary driving control method and system and flight quality evaluation method

Abstract

The invention provides a civil aircraft flight aided driving control method which comprises the steps of designing an aircraft attitude angle aided control system model based on LPV control accordingto a linear parameter time-varying model of a civil aircraft; and according to the LPV control model, establishing an inline structure of the LPV control model, and solving an aircraft LPV model and an LPV controller of an inline structure to realize civil aircraft flight auxiliary control. Meanwhile, the invention provides a civil aircraft flight auxiliary control system and a flight quality evaluation method which are realized by adopting the method. According to the invention, a robust control method is applied, for the large-range change of civil aircraft parameters, the high dynamic tracking performance and robust tracking stability of the longitudinal attitude angle of the aircraft are effectively achieved, positive reference significance is achieved for flight control under large-scale change of parameters of the large civil aircraft, and flight quality evaluation of a civil aircraft auxiliary driving system is conducted by means of the bandwidth criterion and the CAP criterion.

Description

technical field [0001] The present invention relates to the technical field of civil aircraft flight control, in particular to a civil aircraft assisted driving control method, system and flight quality evaluation method. Background technique [0002] When the pilot mismanages a civil aircraft, the aircraft will rapidly change altitude and speed, which will cause the flight control system model parameters to change in a large range. If the traditional gain preset design method is adopted, it is easy for the aircraft to fly at a non-design operating point due to If the parameters deviate from the operating point, a large control deviation will appear, and even the flight control system will become unstable. For this reason, it is necessary to design the flight control law from the whole flight envelope, considering the large-scale variation of parameters. [0003] For the large-scale variation of civil aircraft model parameters, although the traditional Proportion Integratio...

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Problems solved by technology

[0006] To sum up, the research and application of LPV robust control methods have certain prospects, but most of them are used in unmanned aerial vehicles and aerospace, while the applications on civil aircraft are mainly in fault diagnosis and estimation. Under variable altitude and variable speed, there are few studies and applications on the large-scale variation of model parameters, especially in the flight quality evaluation of civil aircraft under variable parameters, and no related research work has been found so far.

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