Yuya Hasegawa

Dynamic Analysis Method of Two-Dimensional Linear Oscillatory Actuator Employing Finite Element Method

This paper proposes a dynamic analysis method of a 2-D linear oscillatory actuator. In this method, a magnetic field equation is coupled with motion equations of both linear and rotary motion of a mover employing the 3-D finite element method. The usefulness of the method is verified by comparing computational results with the measured resonant oscillation of the mover when it is operated at different frequencies for both motions

Dynamic Analysis of Linear Resonant Actuator Driven by DC Motor Taking into Account Contact Resistance Between Brush and Commutator

This paper describes a highly accurate computation technique to obtain the dynamic characteristics of a linear resonant actuator (LRA) driven by the dc brush motor and a magnetic conversion mechanism employing the 3-D finite-element method. In this calculation, the contact resistance between brush and commutator of the dc brush motor is taken into consideration in the electric circuit equation coupled with magnetic field equation. The influences of the contact resistance on the dynamic characteristics are quantitatively investigated, and the importance of the use of appropriate contact resistance is clarified through the comparison with the measurement.

Trajectory Analysis of 2-D Magnetic Resonant Actuator

A novel 2-D magnetic resonant actuator is presented, and the influences of frequency and phase of the input voltage waveform on the trajectory of the armature are computed using the three-dimensional finite element method.

Dynamic Analysis of Electromagnetic Impact Drive Mechanism Using Eddy Current

This paper presents a dynamic analysis method of an electromagnetic impact (EMI) drive mechanism by 3-D finite element method (FEM). The transient and EMI torque are computed when the interlinkage flux of conductor is rapidly changed. The usefulness of this method is confirmed by comparing the calculated results with the measured ones

Eddy current damping analysis of laser marker using 3-D finite element method

This paper presents the numerical method for the damping analysis of a pendulum in a laser marker with the eddy current-brake. In this method, the eddy current analysis is coupled with two-dimensional (2-D) motion analysis employing the three-dimensional finite element method. The usefulness of this method is confirmed through the comparison with the computed and measured results of the 2-D damping trajectory of the pendulum

Dynamic analysis method of spherical resonant actuator using 3-D finite element method

This paper presents a dynamic analysis method of a novel spherical resonant actuator using the three-dimensional finite element method (3-D FEM). In this method, the magnetic field equation is coupled with the electric circuit equation and the motion equation, and the mesh modification method using the Laplace equation is applied to the rotation of a spherical actuator.

Dynamic analysis of spiral resonant actuator using 3-D finite element method

This paper proposes a dynamic analysis method for a new spiral resonant actuator with two-degree-of-freedom employing the 3-D finite element method (FEM), and the dynamic characteristics of the actuator are quantitatively clarified using this method.

Coupled Analysis Method for Linear Oscillatory Actuator Driven by Motor

This paper presents a coupled analysis method for a linear oscillatory actuator that can convert the rotation into linear motion using DC motor and magnetic conversion mechanism. In this method, motion equations of motor rotation and linear motion are simultaneously solved employing the 3-D finite element method. The usefulness of the method is verified to confirm the mutual influences of motion on dynamic characteristics

Dynamic analysis method of spherical resonant actuator using 3D finite element method

This paper presents a dynamic analysis method of a novel spherical resonant actuator using the three-dimensional finite element method (3-D FEM). In this method, the magnetic field equation is coupled with the electric circuit equation and the motion equation, and the mesh modification method using the Laplace equation is applied to the rotation of a spherical actuator.