Results 261 to 270 of about 171,960 (303)

Kinematic Fundamentals of Planar Harmonic Drives

Journal of Mechanical Design, 2011
This paper presents the kinematic model and offers a rigorous analysis and description of the kinematics of planar harmonic drives. In order to reflect the fundamental kinematic principle of harmonic drives, the flexspline of a harmonic drive is assumed to be a ring without a cup.
Huimin Dong, Kwun-Lon Ting, Delun Wang
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Dynamics and Control of Instrumented Harmonic Drives

Journal of Dynamic Systems, Measurement, and Control, 1995
Since torque in harmonic drives is transmitted by a pure couple, harmonic drives do not generate radial forces and therefore can be instrumented with torque sensors without interference from radial forces. The installation of torque sensors on the stationary component of harmonic drives (the Flexipline cup in this research work) produce backdrivability
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Modeling a harmonic drive gear transmission

[1993] Proceedings IEEE International Conference on Robotics and Automation, 2002
In order to capture the dynamic behavior of harmonic drives, dynamic models must include accurate representations of transmission friction, compliance, and kinematic error. Experimental observations are used to guide the development of a model to describe harmonic-drive operation.
T.D. Tuttle, W. Seering
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A High-Fidelity Harmonic Drive Model

Journal of Dynamic Systems, Measurement, and Control, 2011
In this paper, a new model of the harmonic drive transmission is presented. The purpose of this work is to better understand the transmission hysteresis behavior while constructing a new type of comprehensive harmonic drive model. The four dominant aspects of harmonic drive behavior—nonlinear viscous friction, nonlinear stiffness, hysteresis, and ...
Curt Preissner, Thomas J. Royston, Deming Shu   +2 more
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Modeling of precision harmonic drive system

Optics and Precision Engineering, 2014
In consideration of the control method and performance prediction of harmonic drive systems,a modeling method of precision harmonic drive system was proposed according to the main factors effecting the performance of harmonic drive system.A dynamics model and a Simlink simulation model of harmonic drive system were established,and an method to obtain ...
黑沫 HEI Mo, 范世珣 FAN Shi-xun, 廖洪波 LIAO Hong-bo, 周擎坤 ZHOU Qing-kun, 范大鹏 FAN Da-peng   +4 more
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Harmonic control using an active drive

IEE Proceedings - Electric Power Applications, 2003
A method is presented by which the harmonic current in a two-level, network-connected inverter can be controlled for use as an active filter in addition to supplying real power, via the intermediate DC link to a motor inverter. With the use of variable speed drives incorporating sinusoidal rectifiers there exists the possibility that the PWM-modulated ...
P. Brogan, R. Yacamini
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Explicit Dynamics Analysis for Harmonic Drives

Volume 1A: 34th Computers and Information in Engineering Conference, 2014
Harmonic drive can have a high nonlinear dynamic behavior. In order to find a way to simulate its operating process and evaluate its performance, this paper gave an introduction of different methods of tooth contact analysis (TCA) and found out that explicit dynamics as a newly used tool for TCA is the most suitable one.
Zhiyuan Yu, Kwun-Lon Ting
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Harmonic analysis of PMBLDC motor drive

2017 Second International Conference on Electrical, Computer and Communication Technologies (ICECCT), 2017
PMBLDC motors are nowadays use widely for many applications such as industrial application, aerospace, electric vehicles, medical etc. The reason for it is their high torque/speed ratio. But even though with these advantage it face problem of harmonic distortion.
Sacchidanand S. Gotkhinde, Pradnya R. Jadhav   +1 more
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Easy drive installations withnew harmonics standard

World Pumps, 2008
Harmonics can be a nightmare for building managers, causing disruption and damage. One of the sources of harmonics is variable speed drives. But what is a harmonic, how does it affect you and what can you do to avoid them? Mikko Lonnberg, HVAC market manager of ABB, outlines the options for the building manager.
Mikko Lönnberg, Pete Winterbottom
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Harmonics and 3-phase thyristor drives

Electronics and Power, 1974
As industry employs more a.c./d.c. thyristor drives, the effect and magnitude of harmonic currents injected into the supply become more significant. However, many people not conversant with convertor system design do not understand how the equipment they are using generates ...
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