Low power control for magnetically suspended control moment gyro based on current adaptive adjustment‐gimbal angular velocity feedforward method
Abstract Magnetically suspended control moment gyro (MSCMG) outputs gyro moment by changing the direction of the rotor angular momentum to adjust the spacecraft attitude. In the process of outputting moment, due to the moving‐gimbal effect, the power consumption of magnetic bearing occupies a large...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-11-01
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| Series: | IET Electric Power Applications |
| Online Access: | https://doi.org/10.1049/elp2.12229 |
| Summary: | Abstract Magnetically suspended control moment gyro (MSCMG) outputs gyro moment by changing the direction of the rotor angular momentum to adjust the spacecraft attitude. In the process of outputting moment, due to the moving‐gimbal effect, the power consumption of magnetic bearing occupies a large proportion in MSCMG. The existing low power control methods have problems that adjustment time is long and the effect of reducing energy consumption depends on the model accuracy. To solve these problems, the method of current adaptive adjustment‐gimbal angular velocity feedforward (CAA‐GAVF) is proposed. The CAA‐GAVF method controls rotor deflect actively so that the permanent magnet can generate moment to offset the coupling moment of moving‐gimbal effect, thus reducing the power consumption of control current. In CAA‐GAVF, the deflection angle of rotor is quickly adjusted by the feedforward of gimbal angular velocity. The current integral value is used to adjust the feedforward matrix adaptively and precisely. The experimental results show that the power consumption of CAA‐GAVF method is reduced to 43.3% of the traditional control method. |
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| ISSN: | 1751-8660 1751-8679 |