P. Vasiljev YOON SEOK JIN Kim Hyun Jai 정형진 2024-01-13T18:32:46Z 2024-01-13T18:32:46Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/110066 English composite piezoelectric converter ultrasonic motors radial and torsion oscillation piezoceramics Composite piezoelectric a converter for ultrasonic motors Conference 1 31st ISATA(International Symposium on Automotive Technology and Automation), pp.213 - 219 31st ISATA(International Symposium on Automotive Technology and Automation) 213 219 LI