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Position feedforward control method based on linear tracking differentiator

A technology of tracking differentiator and feedforward control, which is applied in the direction of target-seeking control, controller with specific characteristics, adaptive control, etc. It can solve the problems of inability to take into account different input requirements, slow response, large error, etc., and achieve theoretical Clear error analysis, fast control response, and improved control performance

Active Publication Date: 2020-12-08
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the position regulator simply using the PID structure cannot take into account different input requirements, especially when the tracking control of the coarse pointing mechanism adopts a ramp-like input and the helical scan adopts a sinusoidal input, the response is slow and the error is large

Method used

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  • Position feedforward control method based on linear tracking differentiator
  • Position feedforward control method based on linear tracking differentiator
  • Position feedforward control method based on linear tracking differentiator

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Embodiment Construction

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] The high-precision closed-loop servo control system of the coarse pointing mechanism requires fast, accurate and steady state without overshoot. The po...

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PUM

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Abstract

The invention discloses a position feed-forward control method based on a linear tracking differentiator, and the method employs a position feed-forward control link, and extracts a differential signal (speed component) inputted at a position as the lead compensation of a given speed, thereby speeding up the position following response speed, and adjusting a feed-forward controller, so as to further reduce a tracking error.

Description

technical field [0001] The invention belongs to the technical field of space high-precision pointing and tracking, and in particular relates to a position feedforward control method based on a linear tracking differentiator. Background technique [0002] With the rapid development of space vehicle technology and the continuous improvement of space mission requirements, space information acquisition technology and space information transmission technology have been developed rapidly, which also poses many new challenges to space actuators. Tracking error as a consideration of dynamic performance and pointing accuracy of steady-state performance have become one of the most important indicators. [0003] Laser communication terminals often include a tracking system to guide the beam so that it can quickly find and accurately track the target. This acquisition, tracking and targeting technology is referred to as ATP (Acquisition, Tracking and Pointing System) technology. The w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42G05B13/04G05D1/12
CPCG05B11/42G05B13/042G05B13/048G05D1/12Y02P90/02
Inventor 郭超勇刘继奎张述卿蒋俊张强马婷婷刘露咪王红卫刘雪鹏刘巍
Owner BEIJING INST OF CONTROL ENG
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