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Counteractive wheel set adaptive moment distribution control method based on microsatellite

A reaction wheel and micro-satellite technology, applied in space navigation equipment, space navigation aircraft, space navigation aircraft guidance devices, etc., can solve problems such as the limitation of small satellites, and achieve the effect of reducing the impact

Active Publication Date: 2018-07-27
ZHEJIANG UNIV
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Problems solved by technology

However, this magnetic torquer requires a specific installation configuration, which has application limitations for microsatellites
In summary, even though there are many studies on the reaction wheel set model, there is still a lack of methods for substituting the reaction wheel set model into the entire control loop to reduce the impact of vibration

Method used

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  • Counteractive wheel set adaptive moment distribution control method based on microsatellite
  • Counteractive wheel set adaptive moment distribution control method based on microsatellite
  • Counteractive wheel set adaptive moment distribution control method based on microsatellite

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Experimental program
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Embodiment Construction

[0037] Usually, the reaction wheel set is composed of four reaction wheels, and the method of the present invention will be further elaborated below by taking the reaction wheel set with three positive installations and one oblique installation as an example.

[0038] The configuration of RWAs with three formal installations and one oblique installation is as follows: Figure 4 shown. The reaction wheels are respectively distributed along the X axis, Y axis, Z axis and oblique axis, and the corresponding numbers are RW1, RW2, RW3 and RW4. According to the previous discussion, before executing the target torque each time, AMDC should determine whether the speed of the reaction wheel exceeds the limit, and divide the reaction wheel into a normal wheel speed group and an overspeed wheel speed group. According to the speeding situation of RWAs, the operating status of RWAs can be divided into five types:

[0039] Table 1 Operation status of RWAs

[0040]

[0041] RWAs contai...

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Abstract

The invention discloses a counteractive wheel set adaptive moment distribution control method based on a microsatellite. According to the method, after an attitude detecting system transmits a measured microsatellite attitude to a controller, the controller calculates targeted moment which should be applied according to the measured attitude, speeds of various counteractive wheels are used as feedback amounts, moments to be generated of the different counteractive wheels are distributed again, the various counteractive wheels carry out various distributed moments, and attitude regulation and control of the microsatellite are finished. According to the method, the counteractive wheel sets are arranged in a whole control loop, the moments are adaptively distributed according to the current rotating speed of the counteractive wheels, thus, the targeted moment can be generated by the counteractive wheels at low rotating speed, and influence of vibration of the counteractive wheels to attitudes of the satellite is relieved.

Description

technical field [0001] The invention belongs to the technical field of micro-satellite attitude control, and relates to a micro-satellite-based reaction wheel group adaptive moment distribution control method, which can be used to reduce the vibration generated by the micro-satellite reaction wheel during control. Background technique [0002] With the vigorous development of micro-satellites in the aerospace field, the requirements for the attitude control accuracy of micro-satellites are getting higher and higher. At the same time, the technical progress of the reaction wheel set also makes high-precision control possible. In the attitude control of satellites, the reaction wheel set has been regarded as an ideal unit, that is, only the required torque is generated, and the influence of its vibration is ignored. However, for micro-satellites, the impact of this vibration on the attitude cannot be ignored. [0003] For a long time, the vibration control methods of microsa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/28
CPCB64G1/283B64G1/245
Inventor 王昊陈璐王本冬沙鑫宽金仲和郭静
Owner ZHEJIANG UNIV
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