Full strapdown guidance and control integrated design method based on three-order model

Abstract

The invention discloses a full-strapdown guidance and control integrated design method based on a three-order model. The method comprises the following steps: step 1, establishing a three-order guidance and control integrated design model; step 2, clearly considering a design task of a guidance and control integrated algorithm considering full strapdown seeker view field constraints; step 3, constructing an auxiliary system, designing a first-layer expected virtual control quantity eta d, and processing the first-layer expected virtual control quantity eta d through an approximate saturation function to obtain a first-layer virtual control quantity eta c; step 4, designing a second-layer virtual control quantity omega zc by utilizing a Barrier Lyapunov function; step 5, designing an actualrudder deflection angle instruction delta z; step 6, integrating the steps 3-5 to obtain the guidance and control integrated algorithm considering view field constraints; and step 7, checking the performance of the guidance and control integrated algorithm. The method can completely achieve a target, and guarantees that the full strapdown seeker view field constraints are satisfied.

Description

technical field [0001] The invention belongs to the field of aerospace, and relates to an integrated guidance and control design method, in particular to an integrated guidance and control design method based on a third-order model considering the field of view constraint of a strapdown seeker. Background technique [0002] It is of great significance to carry out the research on the integrated design of guidance and control under the all-strapdown detection and guidance system for the development of low-cost and high-performance tactical missiles. An important problem in the integrated design of strapdown guidance and control is to deal with the constraints of the seeker's field of view. From the perspective of the established guidance and control integrated design model, the main progress in this field includes the fourth-order model method and the second-order model method. The fourth-order model method is based on literature 1 "The guidance and control integrated design...

AI Technical Summary

Problems solved by technology

There are two main problems in this type of method: one is that the state variables such as pitch (yaw) angular rate are treated as bounded disturbances, which lack strict system stability guarantees; Algorithms are relatively complex

However, since the missile pitch rate signal is not an independent external signal, but is directly controlled by the pitch rudder deflection angle command, this design method essentially has the problem of controller cycle design

Images