Displacement mode drag-free control method for eliminating static errors

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Displacement mode drag-free control method for eliminating static errors

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GOU XINGYU / ZOU KUI / WANG LIJIAO / LI MINGQUN / JIANG QINGHUA / WANG SHAOKAI / MENG CHAO / LI HE / LI SHENGTAO

The invention relates to a displacement mode drag-free control method for eliminating static errors, and belongs to the technical field of satellite drag-free control. The method comprises the following steps: establishing a displacement mode single-degree-of-freedom drag-free control kinetic equation in a general form under the condition that a test mass disturbed force model is not limited; assuming that the test mass disturbed force model is a linear function which is simultaneously displacement and time, and substituting the test mass disturbed force acceleration expression into the kinetic equation to obtain a drag-free control kinetic equation under the condition that the test mass disturbed force is simultaneously the linear function of displacement and time; obtaining a transfer function of a control object through a drag-free control kinetic equation under the condition that the test mass disturbed force is a displacement and time linear function, designing a displacement mode drag-free PID + double-integral controller, and establishing a displacement mode drag-free control system; and injecting the displacement mode drag-free PID + double-integral controller into the spacecraft, and carrying out series correction unit negative feedback drag-free control on the spacecraft based on the controller.

本发明涉及一种消除静差的位移模式无拖曳控制方法，属于卫星无拖曳控制技术领域，包括如下步骤：建立检验质量受扰力模型未限定情形下一般形式的位移模式单自由度无拖曳控制动力学方程；假设检验质量受扰力模型为同时为位移及时间的线性函数，将检验质量受扰力加速度表达式代入动力学方程中，得到检验质量受扰力同时为位移及时间线性函数情形下的无拖曳控制动力学方程；由检验质量受扰力为位移及时间线性函数情形下的无拖曳控制动力学方程得到控制对象的传递函数，设计位移模式无拖曳PID+双积分控制器，建立位移模式无拖曳控制系统；将位移模式无拖曳PID+双积分控制器注入航天器，基于该控制器对航天器进行串联校正单位负反馈无拖曳控制。

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Title :

Displacement mode drag-free control method for eliminating static errors

Additional title:

一种消除静差的位移模式无拖曳控制方法

Contributors:

GOU XINGYU (author) / ZOU KUI (author) / WANG LIJIAO (author) / LI MINGQUN (author) / JIANG QINGHUA (author) / WANG SHAOKAI (author) / MENG CHAO (author) / LI HE (author) / LI SHENGTAO (author)

Publication date :

2021-08-03

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

B64G Raumfahrt , COSMONAUTICS / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL