Reserch Projects

Spherical actuator An electromagnetic actuator with 2 or 3 degrees of freedom for a human wrist and shoulder joints is under research. This is an important technology to reduce the number of motors and other components of a multi-degree-of-freedom system, and contributes to small and simple structures and high positioning accuracy. In addition, position sensing, control, and evaluation methods have been developed.

電磁共振・振動アクチュエータ Linear Oscillatory Actuators (LOAs) have a small and light structure which can reciprocate very fast. Additionally, high efficiency performance can be obtained by utilizing the spring resonance. We are researching ways to improve the performance and increase the number of degrees of freedom, as well as control methods for such actuators.

磁気支持・磁気浮上 Magnetically supporting and levitated systems can support a rotor without a mechanical contact, and they can use maintenance-free. We are developing the multiple-axis active control type magnetic bearing and magnetically levitated lead screw.

リニアアクチュエータとその応用 We are developing novel linear electromagnetic actuators and linear actuator driven by a magnetic lead screw. For applying to human-coexistence type robots and industrial machines, the control method and operating characteristics are verified.

非接触磁気伝達機構およびメガトルクアクチュエータ We are research magnetic gears and magnetic geared-motors that can contactless transmit torque. By using magnetic flux harmonics, these devices effectively utilizes its magnetic circuit and have high torque densities.

新材料・新原理アクチュエータ・デバイス We are developing novel actuators using a magnetic elastomer, temperature sensitive magnetic material, and giant magnetostrictive material. A flexible response and switching operation using the material properties are achieved.

新材料および新原理を用いたアクチュエータ・デバイス The particle method is a method that can perform analysis only at calculation points without using a mesh. This is not related to the need for mesh destruction and remeshing during large deformation, which is a problem of conventional finite element methods, and is expected to be suitable for numerical analysis of phenomena such as large deformation, fragmentation and coalescence of objects. In this study, in order to elucidate complicated physical phenomena involving large deformation such as injection molding of magnetohydrodynamics and bonded magnets, particle method (MPS, DEM, weighted least squares method, etc.) is used for fluid analysis, and we are developing a coupled analysis method for magnetic field analysis (magnetic moment method, FEM, mesh-free method, BEM) and thermal analysis (MPS, weighted least squares method).