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Method for accurately and quickly manipulating variable speed control moment spinning top group

A precise technology for controlling torque gyroscopes, applied in the field of maneuvering law design, can solve the problems of torque output accuracy, torque error cannot be applied, etc.

Active Publication Date: 2014-02-19
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0003] However, while SGCMG provides a large torque output, it also faces two main problems: one is the problem of singular configuration
The second problem is the torque output accuracy of SGCMG
This method is not applicable to the torque error caused by the SGCMG analyzed above due to the torque amplification characteristics and the speed dead zone characteristics
Patent 201310007615.2 proposes a hybrid actuator using SGCMG and MW at the same time. The advantage of this method is that it can meet the control requirements of large torque output and high-precision small torque output, but its significant disadvantage is that compared with only In terms of the SGCMG group, additional actuators are added to increase the spaceborne load and other corresponding design tasks

Method used

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  • Method for accurately and quickly manipulating variable speed control moment spinning top group
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  • Method for accurately and quickly manipulating variable speed control moment spinning top group

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Embodiment Construction

[0045] In order to introduce this embodiment more clearly, the principle of VSCMG output torque is briefly described first. see figure 1 , VSCMG consists of a variable speed rotor and a frame supporting the rotor, is the direction of the rotor spin axis, is the rotational speed direction of the frame shaft, It is opposite to the direction of the output control torque. The rotor spin axis is installed orthogonally to the frame axis, and is driven by the rotor motor and the frame motor respectively. The rotor motor drives the rotor to rotate around the spin axis at a variable speed Ω, generating an angular momentum. The frame motor drives the frame at an angular velocity around the frame axis fixed to the spacecraft body according to the control command. Turn frame angle δ. Due to the change of the rotational speed of the rotor, the angular momentum of the rotor changes, thereby outputting a torque in MW mode. Due to the rotation of the frame shaft, the direction of t...

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Abstract

The invention discloses a method for accurately and quickly manipulating a variable speed control moment spinning top group. According to the method, the condition that the rotor rotating speed is changeable of the VSCMG is fully utilized. According to the moment needed by an attitude control task, the operation modes of the VSCMG are divided into the CMG / MW mixed operation mode and the independent MW operation mode. Through reasonable switching of the two operation modes, the large-moment requirements for tasks such as attitude maneuver control of the VSCMG can be satisfied through one VSCMG and the high-precision small-moment requirement for tasks such as attitude stable control can be satisfied through one VSCMG under the condition that an additional actuating mechanism does not need to be configured, so that the problem which cannot be solved when a single SGCMG or a single MW group is used for conducting spacecraft attitude control is well solved.

Description

technical field [0001] The invention relates to a precise and agile control method for a variable-speed control moment gyroscope group, in particular to a control law design method using a variable-speed control moment gyroscope group as an actuator, and belongs to the technical field of spacecraft attitude control system design. Background technique [0002] In order to enable the payload on the spacecraft to successfully complete the task, the spacecraft platform itself should first meet certain attitude pointing requirements. For this reason, modern spacecraft generally use certain actuators to provide torque output for active attitude control. . The actuators for the active attitude control of spacecraft mainly include jet thrusters and momentum exchange devices. The use of the former is relatively limited due to the need to consume non-renewable energy on the planet, while the latter can be continuously obtained through solar conversion on the star Therefore, it is rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05D1/08
Inventor 汤亮王大轶何英姿黄兴宏魏春岭
Owner BEIJING INST OF CONTROL ENG
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