Phase Difference Control System for TR Motor
The authors have developed a translational and rotational motor in one device by ultrasonic drive technology. This motor has two degree of freedom, that is, translational movement and rotational movement (TR motor). Two movements are controlled independently or simultaneously such as screw movement. As the motor is driven by ultrasonic vibration at the resonant frequency, the motor (stator) is designed and optimized by FEM analysis. Based on the analysis of FEM, the authors have developed a TR motor successfully. It shows good controllability in both movements.
Prof. Adrian Olaru
U. Nishizawa and S. Toyama, "Phase Difference Control System for TR Motor", Applied Mechanics and Materials, Vol. 841, pp. 173-178, 2016