Results 11 to 20 of about 16,970 (268)
Actuators, 2022 In this work, a cylindrical lead-free rotary-linear ultrasonic motor was attached to piezoelectric plates of MnO2-doped (Ba0.97Ca0.03)(Ti0.96Sn0.005Hf0.035)O3 ceramics using the first bending vibration to pull a thread output shaft of the interior of a ...
Cheng-Che Tsai +3 more
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Linear ultrasonic motor for absolute gravimeter [PDF]
Ultrasonics, 2017 Thanks to their compactness and suitability for vacuum applications, linear ultrasonic motors are considered as substitutes for classical electromagnetic motors as driving elements in absolute gravimeters. Still, their application is prevented by relatively low power output.
Yue, Jian +2 more
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Novel piezoelectric crawling robot with multiple degrees of freedom
AIP Advances, 2021 Traditional ultrasonic motors can usually produce either linear or rotational motion. Piezoelectrically driven structures with multiple degrees of freedom require two or more ultrasonic motors, and the manufacturing process is associated with some ...
Ruikun Niu, Yu Guo
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A Symmetric-Actuating Linear Piezoceramic Ultrasonic Motor Capable of Producing a Scissoring Effect
Research, 2023 Conventionally, to produce a linear motion, one motor’s stator is employed to drive one runner moving forward or backward. So far, there is almost no report of one electromechanical motor or piezoelectric ultrasonic motor that can directly generate two ...
Zhanmiao Li +6 more
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Encoderless position estimation and error correction techniques for miniature mobile robots [PDF]
, 2013 This paper presents an encoderless position estimation technique for miniature-sized mobile robots. Odometry techniques, which are based on the hardware components, are commonly used for calculating the geometric location of mobile robots. Therefore, the
Arvin, Farshad, Bekravi, Masoud
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Robust precision positioning control on linear ultrasonic motor [PDF]
2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2013 Ultrasonic motors used in high-precision mechatronics are characterized by strong frictional effects, which are among the main problems in precision motion control. The traditional methods apply model-based nonlinear feedforward to compensate the friction, thus requiring closed-loop stability and safety constraint considerations.
Minh H.-T. Nguyen +3 more
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A Linear Ultrasonic Motor Based on Coupling Vibration Mode
Micromachines, 2022 A coupled linear ultrasonic motor (LUSM) based on an eccentric constraint was proposed. Two pieces of oblique piezoelectric ceramics were arranged at each end of the elastomer, and the polarization direction of the ceramics was vertically upward. Using the tilting characteristics of the piezoelectric ceramics, the two ends of the fixed piezoelectric ...
Danhong Lu +4 more
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Piezoelectric Motors, an Overview
Actuators, 2016 Piezoelectric motors are used in many industrial and commercial applications. Various piezoelectric motors are available in the market. All of the piezoelectric motors use the inverse piezoelectric effect, where microscopically small oscillatory motions ...
Karl Spanner, Burhanettin Koc
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Improvement of Low-Speed Precision Control of a Butterfly-Shaped Linear Ultrasonic Motor
IEEE Access, 2020 The control performance of a butterfly-shaped linear ultrasonic motor is not good when the target speed is less than 1 mm/s by traditional methods.
Yunlai Shi +3 more
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IEEE Access, 2022 Speed control of ultrasonic motors (USM) needs to be precise, fast, and robust; however, this becomes a challenging task due to the nonlinear behavior of these motors including nonlinear response, pull-out phenomenon, and speed hysteresis.
Abdullah Mustafa +2 more
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