An Application of Active Magnetic Bearing to Gyroscopic and Inertial Sensors

Maruyama, Yutaka; Mizuno, Takeshi; Takasaki, Masaya; Ishino, Yuji; Ishigami, Takayuki; Kameno, Hironori

doi:10.1299/jsdd.2.155

Cited by 23 publications

(18 citation statements)

References 2 publications

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“…Substituting (1,5,7,9) into (12), converting dS to the spherical coordinate system, and calculating the disturbing torques generated from six stator magnetic poles respectively, the final equation of the disturbing torques is as follow ( ) …”

Section: Theoretical Model Of Drift Errormentioning

confidence: 99%

“…Traditionally, AMBs are employed as control moment gyroscopes, moment wheels or reaction wheels in space missions [4][5]. In recent years, researchers have begun to develop inertial sensors based on AMBs, named magnetically suspended sensitive gyroscope (MSSG) [6][7]. MSSG is used to measure attitude angle or angular velocities.…”

Section: Introductionmentioning

confidence: 99%

“…By increasing the feedback gain, the moment of inertia of the rotor and the angular velocity of the rotor about the principal axis, and by decreasing the moment of inertia of the rotor about the orthogonal axis to the principal one, the frequency region for angular velocity detection can be expanded. Due to lack of effective error compensation, the amplitude error is as high as 10% in the angular velocity measurement [7][8][9]. Jiancheng Fang proposed a magnetically suspended control moment gyroscope, which can work in two modes of actuator and attitude sensor [10].…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Analysis of Drift Error from Stator of A MSSG with Double Spherical Envelope Surfaces

Xin¹,

Cai²,

Ren³

et al. 2016

Journal of Electrical Engineering and Technology

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-For the newly developing magnetically suspended sensitive gyroscope (MSSG) with double spherical envelope surfaces, it is necessary to analyze the causes of drift error to improve sensing accuracy. This paper builds the models of disturbing torques generated by stator assembly and process errors based on the geometric construction and running regularity of the MSSG, and further reveals the generation mechanism of the drift error. Then the drift error from a single stator magnetic pole is calculated quantitatively with the established model, and the key factors producing the drift error are further discussed. It is proposed that the main approaches in reducing the drift error from stator are guaranteeing the rotor envelope surface to be an ideal spherical and improving the controlling precision of rotor displacement. The common problems associated in a gyroscope with a spherical rotor can be effectively resolved by the proposed method. This analysis provides a reference for the structure optimization and error compensation of a MSSG.

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Section: Theoretical Model Of Drift Errormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling and Analysis of Drift Error from Stator of A MSSG with Double Spherical Envelope Surfaces

Xin¹,

Cai²,

Ren³

et al. 2016

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

show abstract

“…Traditionally, AMBs are employed as control moment gyroscopes, moment wheels or reaction wheels in space missions [4,5]. In recent years, researchers have begun to develop inertial sensors based on AMBs, named magnetically suspended sensitive gyroscope (MSSG) [6]. MSSG is used to measure attitude angle or angular velocities.…”

Section: Introductionmentioning

confidence: 99%

“…Maruyama et al raised the method of inertial measurement using AMBs [6]. They discussed the principles of two-axis angular velocity measurement by AMBs, and experimentally succeeded in using an industrial AMB motor as a gyroscope.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Drift Error in a MSSG with Double Spherical Envelope Surfaces

Xin¹,

Cai²,

Ren³

et al. 2016

Journal of Magnetics

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To improve the sensing accuracy of the newly developed magnetically suspended sensitive gyroscope (MSSG), it is necessary to analyze the causes of drift error. This paper build the models of disturbing torques generated by stator assembly errors based on the geometric construction of the MSSG with double spherical envelope surfaces, and further reveals the generation mechanism of the drift error. Then the drift error from a single stator magnetic pole is calculated quantitatively with the established model, and the key factors producing the drift error are further discussed. It is proposed that the main approaches in reducing the drift error are guaranteeing the rotor envelope surface to be an ideal spherical and improving the controlling precision of rotor displacement. The common problems associated in a gyroscope with a spherical rotor can be effectively resolved by the proposed method.

show abstract