{'fraction_non_alphanumeric': 0.027210884353741496, 'fraction_numerical': 0.0, 'mean_word_length': 4.740259740259741, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Novel screw-shaped ultrasonic motor to obtain high torque

In this paper, we discuss a method to obtain a high torque in a standing-wave-type ultrasonic motor. We devised a screw-shaped ultrasonic motor. Three bolt-clamped Langevin type longitudinal vibration transducers (BLTs) were installed in the shape of a screw in order to produce removal rotor and boost rotor power. The vibration and load characteristics of the motor were measured.