Steering law considering biased loads for control moment gyroscopes

Yasuyuki Nanamori, Masaki Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new steering law of control moment gyroscopes (CMGs) is proposed to ensure extended life and to reduce the risk of failure. Because major failure modes of the CMG are aged deterioration and accumulated fatigue of the gimbal-axis bearing, the proposed method attempts to level gimbal angular displacements and to keep the manipulability greater applying a relation between the gimbal angular displacement of each CMG and the initial condition of gimbal angles. A suitable set of initial gimbal angles is selected using a defined evaluation function in an off-line preliminarily calculation. The evaluation function considers the average and variance of the gimbal angular displacement and the manipulability of the upcoming maneuver. The dynamics of a typical pyramid configuration of four single-gimbal CMGs was modeled and a numerical simulation was carried out to evaluate the performance of the proposed method. Numerical simulation confirmed that the proposed method levels the gimbal angular displacements of CMGs and keeps the manipulability greater, or suppresses radical motion of gimbals without degrading attitude control. The effective of the leveling of CMG loads was confirmed in the case that the CMGs do not pass a singularity.

Original languageEnglish
Title of host publicationMOVIC 2014 - 12th International Conference on Motion and Vibration Control
PublisherJapan Society of Mechanical Engineers
Publication statusPublished - 2014
Event12th International Conference on Motion and Vibration Control, MOVIC 2014 - Sapporo, Hokkaido, Japan
Duration: 2014 Aug 32014 Aug 7

Other

Other12th International Conference on Motion and Vibration Control, MOVIC 2014
CountryJapan
CitySapporo, Hokkaido
Period14/8/314/8/7

Fingerprint

Gyroscopes
Function evaluation
Bearings (structural)
Attitude control
Computer simulation
Failure modes
Deterioration
Fatigue of materials

Keywords

  • Attitude control
  • Control moment gyros
  • Life extension
  • Spacecraft
  • Steering law

ASJC Scopus subject areas

  • Control and Systems Engineering

Cite this

Nanamori, Y., & Takahashi, M. (2014). Steering law considering biased loads for control moment gyroscopes. In MOVIC 2014 - 12th International Conference on Motion and Vibration Control Japan Society of Mechanical Engineers.

Steering law considering biased loads for control moment gyroscopes. / Nanamori, Yasuyuki; Takahashi, Masaki.

MOVIC 2014 - 12th International Conference on Motion and Vibration Control. Japan Society of Mechanical Engineers, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nanamori, Y & Takahashi, M 2014, Steering law considering biased loads for control moment gyroscopes. in MOVIC 2014 - 12th International Conference on Motion and Vibration Control. Japan Society of Mechanical Engineers, 12th International Conference on Motion and Vibration Control, MOVIC 2014, Sapporo, Hokkaido, Japan, 14/8/3.
Nanamori Y, Takahashi M. Steering law considering biased loads for control moment gyroscopes. In MOVIC 2014 - 12th International Conference on Motion and Vibration Control. Japan Society of Mechanical Engineers. 2014
Nanamori, Yasuyuki ; Takahashi, Masaki. / Steering law considering biased loads for control moment gyroscopes. MOVIC 2014 - 12th International Conference on Motion and Vibration Control. Japan Society of Mechanical Engineers, 2014.
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