TANG Ji-qiang, HAN Xue-fei, LIU Qiang. Optimal design of rotor rim for magnetically suspended flywheel with vernier gimballing capacity[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1991-1998
TANG Ji-qiang, HAN Xue-fei, LIU Qiang. Optimal design of rotor rim for magnetically suspended flywheel with vernier gimballing capacity[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1991-1998 DOI: 10.3788/OPE.20122009.1991.
Optimal design of rotor rim for magnetically suspended flywheel with vernier gimballing capacity
A 5 DOF magnetically suspended flywheel with vernier gimballing capacity which is composed of a conoid reluctive bearing and a Lorentz magnetic bear was investigated and its rotor rim was designed optimally. Based on the structure of the rotor and the goal to minimize the mass of the rim
the mass
inertial moment and resonance frequency of the rim were analyzed theoretically to confirm the optimal variables. Consequently
an optimal design was achieved through iSIGHT and ANSYS
and by taking the number of spokes into account
the variables were optimized by the sequential quadratic programming algorithm in the restrain cases of the resonance frequency
inertial moment
maximum equivalent stress
and the ratio of polar inertia moment to equinoctial inertial moment. Those results of optimization indicate that the mass of the rim is decreased from 2.226 kg to 2.036 kg (namely reduced by 8.54%) when the number of spokes is 3 and other design variables are optimal. The proposed optimal design method can improve the rationality and efficiency of rotor design
and will be an important part in the optimal design of flywheel systems.
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references
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