Journal ArticleDOI
Dynamic modeling and analysis of a bimodal ultrasonic motor
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TLDR
A dynamic model that includes four subsystems is developed to analyze the fundamental characteristics of a bimodal ultrasonic motor and the existing of a nonlinear deadzone is predicted analytically, and the causes of this nonlinearity are clarified.Abstract:
A dynamic model that includes four subsystems is developed to analyze the fundamental characteristics of a bimodal ultrasonic motor. The first subsystem is the driving circuit designed for the motor to achieve bidirectional motion. The stator is modeled as a Timoshenko beam, and the assumed mode energy method is used to obtain the dynamic equations. The normal interface force is represented by an elastic spring existing in between the tip of the stator and the moving platform. The interface forces are coupled into the dynamic formulations of the stator and the moving platform. The behavior of the force transmission between the stator and the moving platform are analyzed using the developed model. Transient and steady-state responses of the system are obtained by numerical simulation, and the results are validated by experiments. Furthermore, the existing of a nonlinear deadzone is predicted analytically, and the causes of this nonlinearity are clarified.read more
Citations
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Journal ArticleDOI
Study of a new type linear ultrasonic motor with double-driving feet
TL;DR: A new type linear USM with double-driving feet has been developed that consists of eight piezoelectric ceramic plates and one brass plate and the characteristics of the prototype motor were measured experimentally.
Journal ArticleDOI
Modeling and analysis of stick-slip motion in a linear piezoelectric ultrasonic motor considering ultrasonic oscillation effect
Xiang Li,Zhiyuan Yao,Ranchao Wu +2 more
TL;DR: In this paper, a novel friction model is developed to study the stick-slip motion in a linear piezoelectric ultrasonic motor using longitudinal and bending modes, which is driven by the interface friction between the stator and the rotor/slider.
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Design of Total Sliding-Mode-Based Genetic Algorithm Control for Hybrid Resonant-Driven Linear Piezoelectric Ceramic Motor
Rong-Jong Wai,Ching-Hsiang Tu +1 more
TL;DR: In this paper, a total sliding-mode-based genetic algorithm control (TSGAC) system for a linear piezoelectric ceramic motor (LPCM) driven by a newly designed hybrid resonant inverter is presented.
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Design and evaluation of linear ultrasonic motors for a cardiac compression assist device
TL;DR: In this article, a self-moving linear ultrasonic motor with large displacement within a limited housing space is proposed and investigated as a primary attempt to develop a new actuator suitable for a cardiac compression assist device.
Journal ArticleDOI
Experimental Verification of Elliptical Motion Model in Traveling Wave Ultrasonic Motors
TL;DR: In this paper, the authors proposed a model of a traveling wave ultrasonic motor that includes the elliptical motion amplitudes of the stator and verify this model experimentally using a high speed camera with a high power lens (i.e., a high-speed microscope).
References
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Journal ArticleDOI
Modeling of a piezoelectric rotary ultrasonic motor
TL;DR: In this article, the Rayleigh-Ritz assumed mode energy method is used to model the distributed piezoceramics and the traveling wave dynamics of the stator.
Journal ArticleDOI
Travelling wave ultrasonic motors, part i: working principle .and mathematical modelling of the stator
Peter Hagedorn,Jörg Wallaschek +1 more
TL;DR: In this article, the working principle of traveling wave ultrasonic motors is reviewed and the main phenomena are mathematically modelled, and a detailed mathematical description of the stator vibration and a first model of the contact problem is given.
Journal ArticleDOI
A Piezoelectric Ultrasonic Motor
TL;DR: In this article, a piezoelectric ultrasonic motor is constructed by tightly contacting a rotor to an ultrasonic resonator with eliptical vibrstion (PUREV).
Journal ArticleDOI
An ultrasonic motor using bending vibrations of a short cylinder
TL;DR: An ultrasonic motor using bending vibrations of a short cylinder with free-free ends is proposed, and its performance and efficiency are discussed.
Journal ArticleDOI
Piezoelectric ultrasonic motors
TL;DR: Several types of piezoelectric ultrasonic motors have been developed for industrial applications such as cameralens drive or as actuator in the head restraint of automobile seats as discussed by the authors, which are characterized by high torque at low rotational speed, simple mechanical design and good controllability.