Affiliations: [a] Key Laboratory of Fundamental Science for National
Defense Novel Inertial Instrument and Navigation System Technology, Science and
Technology on Inertial Laboratory, School of Instrumentation Science and
Opto-Electronics Engineering, Beihang University, Beijing, China
Correspondence:
[*]
Corresponding author: Cong Peng, Key Laboratory of Fundamental
Science for National Defense Novel Inertial Instrument and Navigation System
Technology, Science and Technology on Inertial Laboratory, School of
Instrumentation Science and Opto-Electronics Engineering, Beihang University,
Beijing, China. Tel.: +86 010 8233 9273; Fax: +86 010 8231 6813; E-mail: pengcong.2006@163.com
Abstract: This paper focuses on the steering law for a magnetically suspended
momentum wheel (MSMW) cluster with vernier gimballing capability. Firstly, the
dynamical model of the spacecraft equipped with the MSMW cluster is constructed
in a generalized form. Then a new steering law for the MSMW cluster is proposed
to switch between two operation modes: the conventional momentum wheel mode for
outputting spin torque, and the double gimbaled wheel mode for outputting the
gyroscopic torques. Compared with the traditional steering law, the proposed
steering law with two modes switch can avoid the small vernier gimbal angles
saturation. Finally, simulation results demonstrate the merits of using vernier
gimballing capability and the effectiveness of the proposed steering law in
providing the command torques and avoiding the saturation of the vernier gimbal
angles.
Keywords: Magnetic bearing, magnetically suspended momentum wheel, MSMW application, vernier gimballing, steering law
