2021 Volume 29 Issue 2 Pages 408-413
Haptic devices using an asymmetric vibration for inducing a virtual force are developed to apply to various applications such as navigation systems. The miniaturization of the structure is required for a mobile type three-dimensional haptic device. Then, we focused on a three-degree-of-freedom linear oscillatory actuator (3DOF-LOA) for the driving source of the haptic device. However, conventional 3DOF-LOAs are large in size and weight because they need a large and complicated support mechanism on the outside of the magnetic circuit. To solve these problems, we propose a novel 3DOF-LOA integrated with a support mechanism. This paper describes the proposed structure and operating principle and clarifies the force, frequency characteristics, and acceleration responses. As a result, it is confirmed that the proposed 3DOF-LOA can drive with asymmetric acceleration for the haptic presentation.
