On-orbit automatic adjustment method for control parameters of servo control system of space remote sensor

Abstract

An on-orbit automatic adjustment method for control parameters of a servo control system of a space remote sensor comprises the steps of performing PID control parameter debugging on an existing mechanism model on the ground, and the stability domain of PID control parameters is determined through the generalized Hermite-Biehler theorem and inference thereof; carrying out spectrum analysis on errors after specific curvilinear motion is carried out on the mechanism in orbit, and determining the bandwidth required by the on-orbit control system; in the PID control parameter stability domain determined on the ground, performing statistcis on P and I control parameter values meeting the bandwidth required by the on-orbit control system and the generally required phase margin, and obtaining a new two-dimensional range composed of the P and I control parameters; and calculating P and I control parameter values corresponding to the centroid of a two-dimensional range formed by the P and I control parameters so as to obtain new P and I control parameters required after the mechanism characteristics are changed in an on-orbit manner and complete the on-orbit self-tuning of the PID control parameters. The technical problems of low control precision and low engineering practicability of the existing technical scheme are solved.

Description

technical field [0001] The present application relates to the technical field of high-precision servo control of space remote sensors, in particular to an on-orbit automatic adjustment method for control parameters of a space remote sensor servo control system. Background technique [0002] Due to mission requirements, the on-orbit space remote sensor will use a high-precision tracking and targeting control system to perform imaging servo tracking on the target. However, after the control system is in orbit, the characteristics of the mechanical load of its own controller will change due to the influence of temperature changes, changes in the mechanical environment, and micro-vibrations of other loads. When performing precise optical-mechanical equipment control, it will affect the control accuracy and cause obvious errors. [0003] At present, there are two existing methods to overcome this inconsistency between heaven and earth: one is to improve the phase margin of the c...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by this application is: aiming at the reduction of control precision and the limitation of engineering application in the existing technology

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