Spacecraft formation position cooperative control method

A collaborative control and spacecraft technology, applied in the direction of aerospace vehicle guidance devices, aerospace vehicles, aircraft, etc., can solve problems such as actuator failures, disturbances, uncertain parameters of the spacecraft formation position control system, etc., to achieve fast and accurate The effect of location coordination, reduction of times, reduction of calculation amount and communication frequency

Active Publication Date: 2020-07-24
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology

[0003] However, the spacecraft formation position control system has dynamic characteristics of parameter uncertaint...

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  • Spacecraft formation position cooperative control method
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Embodiment Construction

[0048] based on the following Figure 1 ~ Figure 4 , specifically explain the preferred embodiment of the present invention.

[0049] The research on position cooperative control technology of spacecraft formation has received great attention, and a large number of methods have been proposed to solve these problems. In order to meet the increasing functional requirements of spacecraft formations, the present invention proposes a control method based on an event-triggered mechanism, which can reduce the frequency of onboard microprocessors and wireless networks for processing and transmitting control signals, and reduce their use in terms of control. rate, so that it can achieve more functions and reduce its energy consumption. The event-triggered control method can reduce the processor usage rate by updating the control output acyclically, and at the same time, it can also reduce the number of signal transmissions and save communication resources in the spacecraft control sys...

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Abstract

A spacecraft formation position cooperative control method aims at a master-slave spacecraft formation position cooperation system. An event triggering mechanism is designe, an aperiodic control method based on the event triggering mechanism is formed, the frequency of executing the control method by an airborne microprocessor is reduced, the computational complexity is reduced, aiming at the conditions of external disturbance and state time delay in an actual system, an H-infinity robust performance index is constructed, and parameters of a controller and the triggering mechanism are determined by combining an LMI method, so that adverse effects of external disturbance and time delay are inhibited, robust bounded stability of the system under non-periodic control is ensured, and rapid andaccurate relative position control is realized.

Description

technical field [0001] The invention relates to the technical field of time-delay robust aperiodic control of a control system, in particular to an event-triggered space vehicle formation position cooperative control method. Background technique [0002] Spacecraft formation flight has become a research hotspot in the field of aerospace control in recent years because of its flexible structure, powerful functions, high reliability, long life cycle and low launch risk. In the formation flight of spacecraft, multiple spacecraft form a specific formation configuration, and through inter-satellite information exchange, interaction, and cooperative work, they complete space tasks in a manner similar to a virtual single spacecraft. When the entire formation system performs some complex formation tasks, such as deep space interferometer, synthetic aperture radar, etc., it is required that each spacecraft in the formation not only meets the orbit requirements of the entire formation...

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Application Information

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IPC IPC(8): B64G1/00B64G1/24
CPCB64G1/00B64G1/24
Inventor 张敏黄静孙俊朱东方黄庭轩
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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