Composite layered anti-interference controller

Abstract

The invention relates to a composite layered anti-interference controller, in particular to a design of the composite layered anti-interference controller in a type of multisource jamming control system. The anti-interference controller is designed aiming at the multisource jamming control system containing external model description disturbance, random disturbance and energy-bounded disturbance. Firstly, a reduced-order disturbance observer is structured to estimate and counteract the external model description disturbance of the multisource jamming control system; secondly, the controller having H infinity and guaranteed cost performance index is structured, wherein, the H infinity performance index can be used for inhibiting the energy-bounded disturbance in the system, and the guaranteed cost performance index can be used for inhibiting the random disturbance in the system as well as optimizing the upper bound of variance; the composite layered anti-interference controller can be formed by the reduced-order disturbance observer and the feedback controller with a state of robust H infinity and guaranteed cost; finally, based on convex optimization algorithm, gain array of the composite layered anti-interference controller can be solved. The invention has the advantages of strong anti-interference property, convenient design and the like, and can be applied to a navigation and control system of aerospaceplane, etc.

Description

technical field [0001] The invention relates to a composite layered anti-interference controller with interference cancellation and suppression performance, which can be used for anti-interference control of multi-source interference control systems, such as aerospace navigation and control systems and the like. Background technique [0002] The accuracy of the mathematical model of the controlled object directly affects the actual control quality. In addition to unmodeled dynamics, unknown parameters, and random (Gaussian / non-Gaussian) disturbances, the system model also includes multi-source disturbances such as other equivalent disturbance variables and different types of system noise. These factors will increase the difficulty of system design, resulting in a decrease in control accuracy or even instability. Therefore, the anti-interference control problem of uncertain systems with multi-source interference is a research hotspot in the field of control theory and applic...

AI Technical Summary

Problems solved by technology

A single interference suppression method (such as H ∞ Control, H 2 control, variable structure control, etc.) or relatively conservative, it is difficult to achieve high-precision control; or strict requirements on the controlled object and interference model, it is difficult to widely apply

h 2 and H ∞ The control method can solve the control problem of the system containing Gaussian white noise and model uncertainty at the same time, but the interference suppression is used for the interference with known characteristics, which makes the control accuracy not high

Images