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Method for controlling flexible spacecraft based on ZVDD and PWM (pulse-width modulation) mixing input former

A flexible spacecraft and mixed-input technology, applied in attitude control, adaptive control, general control system, etc., can solve problems such as complicated, unsolvable, and difficult solutions

Inactive Publication Date: 2015-03-04
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, for the UM input shaper pulse action time, the conventional analytical method cannot solve
Even if it is solved by non-analytical methods such as numerical method or graphical method, once the number of pulse action times is too large, it will make the solution process very complicated and difficult

Method used

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  • Method for controlling flexible spacecraft based on ZVDD and PWM (pulse-width modulation) mixing input former
  • Method for controlling flexible spacecraft based on ZVDD and PWM (pulse-width modulation) mixing input former
  • Method for controlling flexible spacecraft based on ZVDD and PWM (pulse-width modulation) mixing input former

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Embodiment approach （ 1

[0115] See image 3 , a kind of flexible spacecraft control method based on ZVDD and PWM mixed input shaper of the present invention, the concrete steps of this method are as follows:

[0116] Step 1: Analysis and construction of flexible spacecraft control system model

[0117] The closed-loop control system adopts a negative feedback control structure, and the output is the attitude angle of the flexible spacecraft. The designed closed-loop control system is mainly composed of two parts: the access former, the controller link and the system model. The structural layout is shown in figure 2 shown.

[0118] Flexible spacecraft control system model J θ · · + G q · · = ...

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Abstract

The invention relates to a method for controlling a flexible spacecraft based on a ZVDD and PWM (pulse-width modulation) mixing input former. The method comprises the following five steps of: step 1, analyzing and constructing the flexible spacecraft system model; step 2, designing a PD controller of the flexible spacecraft and analyzing the stability of the PD controller of the flexible spacecraft; step 3, designing a ZVDD and PWM mixing input former; step 4, verifying tracking performance; and step 5, finishing the design. According to the method for controlling the flexible spacecraft based on the ZVDD and PWM mixing input former, disclosed by the invention, a posture angle of the spacecraft is used for being controlled by aiming at a large flexible spacecraft system; and the method for controlling the flexible spacecraft based on the ZVDD and PWM mixing input former, disclosed by the invention, has better practical value and a wide application prospect in an aerospace automatic control technical field.

Description

(1) Technical field [0001] The invention relates to a flexible spacecraft control method based on a ZVDD and PWM mixed input shaper, which is aimed at a large flexible spacecraft system, and provides a flexible spacecraft based on a ZVDD and PWM mixed input shaper The PD control method is used for controlling the attitude angle of a flexible spacecraft and belongs to the technical field of automatic control. (2) Background technology [0002] In order to achieve the fastest speed and the least fuel consumption, lightweight flexible materials are widely used in spacecraft. Once this kind of large flexibility and low damping system is disturbed by other disturbances, it is easy to produce structural vibration response, which will affect the positioning accuracy of the spacecraft and the normal work of precision instruments on it, and will cause fatigue and damage to the components. In practice, such as the Explorer-I of the United States, due to the undesired vibration of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/08G05B13/04
Inventor 刘金琨王明钊
Owner BEIHANG UNIV
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