@article{oai:kanazawa-u.repo.nii.ac.jp:00042867,
 author = {Ueno, Toshiyuki and Sakamoto, Ryusuke and Yamada, Sotoshi and 上野, 敏幸 and 坂本, 龍介 and 山田, 外史},
 issue = {1},
 journal = {日本AEM学会誌, Journal of the Japan Society of Applied Electromagnetics},
 month = {Mar},
 note = {We propose a three-DOF spherical motor using magnetostrictive material (Galfenol). The motor consists of four U shape cores of Galfenol rods wound two coils, a permanent magnet, iron fixture, elastic ring and spherical rotor. Top of the rod is shaped step to exert torque. The magnetomotive force of the magnet provides bias magnetostriction for the rods and attractive force to maintain the rotor on the magnet. When opposite phase currents flow in coils of opposing rods, the torque for X or Y axes rotation is exerted on the rotor and the rotor is rotated based on smooth impact drive mechanism by saw tooth deformation of the rod, slowly expansion (contraction) and rapidly contraction (expansion) of the rods. On the other hand, when opposite phase currents flow in two coils of four rods, torque for Z axis rotation is exerted on the rotor by bending deformation of four rods. In this paper, the displacements of rods with sinusoidal and sawtooth currents resulting in angular velocity of the rotor were investigated to verify the principle., Special Issue the 23rd Symposium on Electromagnetics and Dynamics},
 pages = {181--186},
 title = {磁歪材料を用いた3軸球面モータの特性評価},
 volume = {20},
 year = {2012}
}