Results 31 to 40 of about 35,312 (308)

Diagnosis of the Misaligned Faults of the Vertical Test Instrument of High-Precision Industrial Robot Reducer

open access: yesShock and Vibration, 2021
High-precision reducer is the core component of industrial robots. In order to achieve the comprehensive performance testing of precision reducers, an instrument with a vertical layout and a cylindrical structure is designed.
Zhen Yu, Yuan Zhang
doaj   +1 more source

Nonlinear characterization of half and full wavelength power ultrasonic devices [PDF]

open access: yes, 2016
It is well known that power ultrasonic devices whilst driven under elevated excitation levels exhibit nonlinear behaviors. If no attempt is made to understand and subsequently control these behaviors, these devices can exhibit poor performance or even ...
Cardoni, Andrea   +2 more
core   +1 more source

Physical and Chemical Roles of Metalworking Fluids in a Vibration-Assisted Tapping System

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
A vibration-assisted tapping system has been developed in which a piezoelectric-zirconate-titanate (PZT) oscillator applies small-amplitude vibrations to a workpiece and a torque transducer measures the time-evolving torque during the tapping process. To
Takeshi NOGAMI, Ken NAKANO
doaj   +1 more source

Observer based tuning techniques and integrated SAW torque transducers for two-inertia servo-drive systems [PDF]

open access: yes, 2005
A controller design and tuning methodology is proposed that facilitates the rejection of periodic load-side disturbances applied to a torsional mechanical system, whilst simultaneously compensating for the disturbance observer's inherent phase delay ...
Bingham, Chris   +2 more
core   +1 more source

SAW torque transducers for disturbance rejection and tracking control of multi-inertia servo-drive systems [PDF]

open access: yes, 2004
The paper proposes a resonance ratio control (RRC) technique for the coordinated motion control of multi-inertia mechanical systems, based on the measurement of shaft torque via a SAW-based torque sensor. Furthermore, a new controller structure, RRC plus
Bingham, C M   +2 more
core   +1 more source

A combined loading transducer for calculating the bending moment and torque in a slender circular beam using the minimum numbers of strain gauges, strain grids, and measurement channels

open access: yesInternational Journal of Distributed Sensor Networks, 2020
The purpose of this work is to develop a new methodology that uses the minimum numbers of strain gauges, strain grids, and measurement channels to calculate the bending moment and torque in a slender circular beam under combined loading from measured ...
Bernard J Socha   +2 more
doaj   +1 more source

Design of Unimorph Type 3DOF Ultrasonic Motor

open access: yesApplied Sciences, 2020
A new design of 3 degrees of freedom (DOF) piezoelectric ultrasonic motor (USM) is introduced in this paper. The concept of this design is to incorporate a spherical rotor between two piezoelectric transducers.
Vytautas Jūrėnas   +2 more
doaj   +1 more source

An in vitro study evaluating the efficacy of a novel mount with torque control designed to tighten Osstell® transducers

open access: yesClinical and Experimental Dental Research, 2023
Objectives To evaluate the efficacy of a novel mount with torque control for tightening of Osstell® transducers and to determine the reliability of recorded ISQ measurements from implants placed in various bone densities.
David Naughton   +2 more
doaj   +1 more source

Evaluation of Axial Preload in Different-Frequency Smart Bolts by Laser Ultrasound

open access: yesSensors, 2022
We report here on a laser ultrasonic system to indirectly evaluate the preload force of different-frequency piezoelectric bolts. This newly developed system enables us to achieve the goal of non-contact excitation and synchronously collects the laser ...
Guanpin Ren   +5 more
doaj   +1 more source

Transducer measures force in vacuum environment [PDF]

open access: yes, 1966
Transducer assembly measures force in a vacuum environment. The assembly consist of a standard capacitance probe and a torque beam. This transducer can be used in high-pressure as well as in low-pressure environments for static and dynamic force ...
Glenn, D. C.
core   +1 more source

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