Results 21 to 30 of about 16,970 (268)
Characterisation of contact pressure distribution in bolted joints [PDF]
, 2006 The quantification of contact area and pressure distribution in a bolted joint is essential information, as it determines the integrity of the coupling. Current bolted joint design standards are based on analytical solutions of the pressure distribution,
Arakawa +11 more
core +1 more source
RETRACTED: Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor
Micromachines, 2022 To overcome the problem of frequency consistency and simplify the design process of linear ultrasonic motor, a novel traveling wave linear ultrasonic motor with a ring-type stator is proposed in this paper.
Lin Yang +6 more
doaj +1 more source
Performance and Applications of L1B2 Ultrasonic Motors
Actuators, 2016 Piezoelectric ultrasonic motors offer important advantages for motion applications where high speed is coupled with high precision. The advances made in the recent decades in the field of ultrasonic motor based motion solutions allow the construction of ...
Gal Peled, Roman Yasinov, Nir Karasikov
doaj +1 more source
IEEE Access, 2020 In this study, we design and fabricate a tank-track-shaped stator working in two torsional modes to form a traveling-wave (TW) linear ultrasonic motor (USM). The stator comprises two torsional transducers and two kidney-shaped vibrating bodies.
Jianye Niu +3 more
doaj +1 more source
Empowering and assisting natural human mobility: The simbiosis walker [PDF]
, 2011 This paper presents the complete development of the Simbiosis Smart Walker. The device is equipped with a set of sensor subsystems to acquire user-machine interaction forces and the temporal evolution of user's feet during gait.
Frizera A. +8 more
core +4 more sources
An analytical model of a longitudinal-torsional ultrasonic transducer [PDF]
, 2012 The combination of longitudinal and torsional (LT) vibrations at high frequencies finds many applications such as ultrasonic drilling, ultrasonic welding, and ultrasonic motors.
Al-Budairi, H., Lucas, M.
core +1 more source
A novel linear ultrasonic motor with dual sliders [PDF]
AIP Advances, 2021 A novel linear ultrasonic motor with dual sliders using the first bending vibration mode of the stator as the working mode has been studied in this paper. The dual sliders are composed of an upper slider and a lower slider to provide dual outputs synchronously. When the two sliders are connected together, a combined slider of dual sliders can be formed
Danhong Lu +5 more
openaire +2 more sources
Vector control method applied to a traveling wave in a finite beam [PDF]
, 2014 This paper presents the closed-loop control of exciters to produce a traveling wave in a finite beam. This control is based on a dynamical modeling of the system established in a rotating reference frame.
AMBERG, Michel +3 more
core +6 more sources
Acoustic noise radiated by PWM-controlled induction machine drives [PDF]
, 2000 This paper investigates the acoustic noise radiated from two nominally identical induction motors when fed from sinusoidal, and asymmetric regular sampling subharmonic and space-vector pulsewidth modulation (PWM) converters.
Chan, C.C. +5 more
core +3 more sources
Design of a Linear Ultrasonic Piezoelectric Motor
Journal of Intelligent Material Systems and Structures, 2010 A new geometrically unique ultrasonic motor (USM) was designed, prototyped, and tested. USMs operate by vibrating a drive tip in an elliptical motion while in periodic contact with a driven surface. Piezoelectric elements are used to create the elliptical motions and are driven at near resonance frequencies to create the needed displacements for the ...
Scott L. Sharp +2 more
openaire +2 more sources