2211 Measurement Bandwidth of a Gyroscopic Sensor using Active Magnetic Bearing

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

doi:10.1299/jsmemovic.2007.10.220

Cited by 5 publications

(10 citation statements)

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“…The outer diameter, inner diameter and thickness of the rotor are 40, 25, and 5 mm, respectively. The rotor is much smaller than a conventional one [5]. The whole dimension of the proposed gyro is half of the conventional gyro.…”

Section: B Design Of the Prototypementioning

confidence: 99%

“…k (k = 1 to 8). Substituting (4), (5), and (6) into (1), (2), and (3), respectively, gives the solution:…”

Section: Measurement Principlementioning

confidence: 99%

“…In this gyro, magnetic bearings are built into the gimbal mechanism to support the rotor. A rotating gyro based on an active magnetic bearing (AMB), called the AMB-based gyro, has been proposed [5], [6]. In this gyro, the AMB itself is applied to a rotating gyro.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Proposal of a new configuration for magnetically suspended gyro

Maruyama

Mizuno

Takasaki

et al. 2009

2009 35th Annual Conference of IEEE Industrial Electronics

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This paper proposes a new configuration for rotating gyros using magnetic suspension. A rotating gyro based on an active magnetic bearing (AMB-based gyro) has been proposed. However, the miniaturization of the AMB-based gyro is technically difficult because of the limitations on its design and structures.In contrast, the new configuration suits miniaturization because of the simplicity of rotor design. Based on the new concept, a prototype of a new rotating gyro was fabricated. The structure and the principle of angular velocity measurement are presented, as well as the control system of the new gyro. The performance of the closed-loop system is evaluated from a viewpoint of frequency response. In addition, angular velocity measurements are reported.

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Section: B Design Of the Prototypementioning

confidence: 99%

“…k (k = 1 to 8). Substituting (4), (5), and (6) into (1), (2), and (3), respectively, gives the solution:…”

Section: Measurement Principlementioning

confidence: 99%

See 1 more Smart Citation

Proposal of a new configuration for magnetically suspended gyro

Maruyama

Mizuno

Takasaki

et al. 2009

2009 35th Annual Conference of IEEE Industrial Electronics

Self Cite

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][7]. 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 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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Compensation system design of disturbing torques for a magnetically suspended sensitive gyroscope with double spherical envelope surfaces

Xin

Cai

Ren

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Magnetically suspended sensitive gyroscopes (MSSGs) provide an interesting alternative for achieving precious attitude angular measurement. But the high accuracy is sensitive to various disturbing torques acting on the rotor. In order to compensate for the drift errors produced by disturbing torques, this paper proposes a compensation system of Lorentz force magnetic bearings. Based on the geometric construction and running regularity of the compensation system, the analytical expression of the compensation torque has been deduced, and the generation mechanism of the compensation torque is revealed, which laid the foundation for the design of high-precision MSSGs. The common issues caused by disturbing torques can be effectively resolved by the proposed method in gyroscopes with a levitating rotor. To verify the feasibility and superiority of this compensation method, comparative simulations are carried out before and after the disturbing torques were compensated.

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2211 Measurement Bandwidth of a Gyroscopic Sensor using Active Magnetic Bearing

Cited by 5 publications

References 0 publications

Proposal of a new configuration for magnetically suspended gyro

Proposal of a new configuration for magnetically suspended gyro

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

Compensation system design of disturbing torques for a magnetically suspended sensitive gyroscope with double spherical envelope surfaces

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