Modeling and Analysis of a 3-DOF Spherical Momentum Exchange Actuator for Spacecraft Attitude Maneuver

Li, Bin; Yu, Rujian; Li, Haike; Li, Guidan; Tie-jun, WU

doi:10.1061/(asce)as.1943-5525.0000487

Cited by 8 publications

(2 citation statements)

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“…Spherical actuators have several advantages such as a simple structure, a low moment of inertia, and a simple control method compared with conventional multi-degree-of-freedom (DOF) actuating systems that are composed of several single-DOF motors [1]. Therefore, they are expected to be applied in the fields of robotics [2][3][4][5], industrial machinery [6,7] and aerospace [8,9], and have been actively developed. In particular, a permanent magnet synchronous spherical actuator is popular because its torque can be controlled using a torque generating equation around an arbitrary axis.…”

Section: Introductionmentioning

confidence: 99%

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Torque Evaluation Method for Multi-Degree-of-Freedom Spherical Actuators Considering Cogging Torque under Current Limiting

Takahara

Hirata

Niguchi

2019

Journal of the Japan Society of Applied Electromagnetics and Me

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Multi-Degree-of-Freedom (Multi-DOF) actuating systems are composed of several single-DOF motors, which results in large, heavy and complicated structures. In order to solve these problems, various multi-DOF spherical actuators have been actively studied. Among them, a spherical actuator can generate torques in arbitrary positions and directions. However due to this, it is difficult to evaluate the torque characteristics at any position all over the movable range. In order to evaluate the spherical actuators, we proposed a torque evaluation method under copper loss limiting. However, in the proposed method, only copper losses can be considered. In this paper, we propose a new torque evaluation method considering a maximum current limiting. Finally, the torque characteristics of our multi-DOF actuators are evaluated using the proposed method and the effectiveness of the proposed method is verified.

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Section: Introductionmentioning

confidence: 99%

“…In particular, a permanent magnet synchronous spherical actuator is popular because its torque can be controlled using a torque generating equation around an arbitrary axis. For this reason, a variety of studies have focused on the permanent magnet synchronous spherical motor [1,[3][4][5][6]8,9].…”

Section: Introductionmentioning

confidence: 99%