Results 231 to 240 of about 557,220 (279)

“Negative” Hysteresis in Magnetoelastic Torque Transducers

IEEE Transactions on Magnetics, 2009
Unusual manifestations of magnetomechanical hysteresis often observed in magnetoelastic torque transducers are described. Characterized by a remanent field at zero torque having a polarity opposite to that at the torque peak, this "negative" hysteretic effect is shown to be of magnetic origin and hypothesized to reflect axial magnetization of ...
I.J. Garshelis, J.M. Cuseo
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A transducer for measurement of finger joint torques

Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2002
A device for measuring torques generated about the joints of the fingers has been developed. The design utilizes a parallelogram construction that allows the device to fit different sizes of hands. The device has the capability to measure isometric moments generated about the MP, PIP and DIP joints of a single digit.
K.L. Kilgore, R.T. Lauer, P.H. Peckham
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Characteristics and stability mechanism of non-contact ultrasonic motor with a longitudinal transducer.

Ultrasonics
Ultrasonic motors (USMs) as a kind of smart drive actuator have potential in space explorations, optical system, precise instrument, biomedicine, etc. However, a series of challenges, such as complex phase control system, severe friction and wear between
Minghui Shi, Ming Gao, Shujie Chen, Shaolin Zhang   +3 more
semanticscholar   +1 more source

New Optical Torque Transducer and Dynamometer

IEEE Transactions on Industrial Electronics and Control Instrumentation, 1970
Most torque measuring transducers develop an electrical output signal proportional to the twisting of an accurately machined and calibrated seciton of shaft known as a torque bar, Fig. 1.
C.E. Johnson, R.D. Foskett
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A dual-mode transducer in the traveling wave rotary ultrasonic motor to extend the high-efficiency speed range.

Ultrasonics
This study proposes a dual-mode transducer design for the traveling wave rotary ultrasonic motor (TRUM) to address the inherent limitation of narrow high-efficiency speed ranges in conventional single-mode counterparts, which critically hinder their ...
Rui Xu, Ying Yang, Jiamei Jin, Liang Wang   +3 more
semanticscholar   +1 more source

Optical transducer in torque measurement

In industry, when a robot is used in assembling two parts connected by a threaded fastener, measuring and controlling the torque applied to the fastener become very important. Torque sensors are used to commonly perform this task. Torque sensors can be divided into two types: contact torque sensors and non-contact torque sensors.
openaire   +2 more sources

A Quantitative Theory of Magnetic Anisotropy Torque Transducers

IEEE Transactions on Instrumentation and Measurement, 1965
A companion paper [1] has given a historical review of torque transducers using the phenomena of magnetic-stress anisotropy and has described the design and operating principles which will yield devices of high precision. The present paper describes a physical theory of operation which yields quantitative results in reasonable accord with the measured ...
T. H. Barton, R. J. Ionides
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The influence of temperature and humidity on the sensitivity of torque transducers

Measurement, 2016
Abstract This paper presents a study of the effect of temperature and relative humidity on the sensitivity and the characteristics of torque transducers such as residual zero torque, reversibility and creep. Temperature and humidity coefficients of the sensitivity take positive as well as negative values.
K.M. Khaled, D. Röske, A.E. Abuelezz, M.G. El-Sherbiny   +3 more
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Magnetostrictive Torque Sensors — Derivation of Transducer Model

SAE Technical Paper Series, 1989
<div class="htmlview paragraph">Current worldwide development activity and potential markets for magnetostrictive, noncontact, torque sensors are reviewed first. Then, a general model for the sensor is derived, and equivalent electrical and magnetic circuits for the sensor are developed.
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Development of Wireless Clamp-on Torque Transducer for Rotating Shaft

, 2017
A. Mustafa, Xiongzhu Bu, Wei Han
semanticscholar   +1 more source