Active disturbance rejection control method for cluster spacecraft electromagnetic traction

A technology of active disturbance rejection control and active disturbance rejection controller, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., and can solve problems such as large amount of calculation and complex design

Active Publication Date: 2017-08-18
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

Since the prerequisite for system linearization is the accuracy of the nonlinear dynamic model, it is difficult to meet this prerequisite in the practice of control engine

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  • Active disturbance rejection control method for cluster spacecraft electromagnetic traction
  • Active disturbance rejection control method for cluster spacecraft electromagnetic traction
  • Active disturbance rejection control method for cluster spacecraft electromagnetic traction

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[0203] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0204] combine figure 1 , the present invention provides an active disturbance rejection control method for electromagnetic dragging of clustered spacecraft, comprising the following steps:

[0205] Step 1: Establish the electromagnetic force far-field model;

[0206] Specifically, according to the Biot-Safar law, the magnetic induction intensity generated by the current-carrying coil at a certain point in space can be calculated. According to Ampere's law, the electromagnetic force on a current-carrying wire in a magnetic field can be obtained. When the two current-...

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Abstract

The invention provides an active disturbance rejection control method for cluster spacecraft electromagnetic traction, complexity of a cluster spacecraft system and model uncertainty are fully considered, an electromagnetic force/torque model and a relative motion dynamics equation are established, so that the active disturbance rejection control method formed by a most speed tracking differentiator, a non-linear extension observer and a non-linear feedback control law has good working performance, a coupled problem of a dynamic model is effectively solved, high precise electromagnetic traction control can be realized, and the effectiveness and the Lyapunov asymptotic stability of the method are verified; compared with the control performance of a finite time control method, the control method has better rapidity, vibration resistance ability and disturbance rejection, and the control method is simple in design and has engineering realizability.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic dragging and orbital relative control of clustered spacecraft, and in particular relates to an active disturbance rejection control method for electromagnetic dragging of clustered spacecraft. Background technique [0002] The relative motion control of traditional distributed spacecraft mainly relies on thrusters. There are problems such as propellant consumption limiting mission life, short-distance plumes may contaminate optical loads, and control discontinuity. Scholars have explored the use of controllable fields generated between spacecraft. force for relative motion control. Electromagnetic formation flight is a relatively new concept, which uses three orthogonal high-temperature superconducting coils to realize the relative control of satellite formation; and the concept of cluster spacecraft is the latest concept among all distributed spacecraft concepts. Cluster and formation Th...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 胡敏杨茗棋宋俊玲莫微程子龙徐家辉郭光衍杨雅君
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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