Sonic Power Sounds Off, by McMaster, Reprint from Steel, Jun. 26, 1967, (7 pages). |
Kuribayashi et al., "Excitation Conditions of Flexural Traveling Waves for a Reversible Ultrasonic Linear Motor", J. Acoust. Soc. Am. 77(4), Apr. 1985, pp. 1431-1435. |
Kumada, "A Piezoelectric Ultrasonic Motor," Journal of Applied Physics, vol. 24, (1985), Supplement 24-2, pp. 739-471. |
Iwamatsu et al., "Rotary Ultrasonic Motor Using Extensional Vibration of a Ring," Journal of Applied Physics, vol. 25, (1986), Supplement 25-1, pp. 174-176. |
Hatsuzawa et al., "Speed Control Characteristics and Digital Servosystem of a Circular Traveling Wave Motor," Rev. Sci. Instrum. 57(11), Nov. 1986, pp. 2886-2889. |