Results 91 to 100 of about 9,348 (176)

Особенности работы привода главного движения токарного станка в режиме постоянного варьирования скоростью вращения шпинделя [PDF]

, 2015
В статье приведены результаты экспериментального исследования работы привода главного движения токарного станка в условиях девиации частоты вращения шпинделя.
Внуков, Юрий Николаевич, Зубарев, А. Е., Кучугуров, М. В.   +2 more
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Research of the possibility of self-excited vibrations amplitude reducing when turning by the variation of the cutting speed [PDF]

, 2016
In this paper the results of research of the possibilities of self-excited vibrations suppression in turning by the cutting speed modulation are presented. The experimental approach to conduct the variative control of lathe main drive is described.
Chernovol, N. N., Kuchugurov, M. V., Zubarev, A. E.   +2 more
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Integration of Lattice Structures into the Boring Bars as a Passive Chatter Suppression Technique: Concepualization, Modelling and Simulation

Vibration
The present study concentrates on passive damping technology, in which the damping of vibrations is accomplished by the integration of lattice structures into the boring bar. To complete this process, several steps must be followed.
Ekrem Oezkaya, Kubilay Aslantas, Adem Çiçek, Hüseyin Alp Çetindağ   +3 more
doaj   +1 more source

Study on the sensorless control method of permanent magnet synchronous motor based on self-tuned boundary layer and RBF neural network

Results in Engineering
This study develops a proportional-integral-derivative (PID) control framework synthesizing self-tuning boundary layer sliding mode observers with radial basis function (RBF) neural networks. This approach enables adaptive adjustment of the velocity loop
Guozhong Yao, Junhong Zhou, Yuhan Xiao, Dewen Jia, Zhengjiang Wang   +4 more
doaj   +1 more source

Обработка деталей малых диаметров точением с высокой частотой вращения шпинделя. Проблемы и перспективы [PDF]

, 2014
В данной статье проанализированы возможности увеличения производительности токарной обработки для деталей малых диаметров за счет увеличения скорости резания современными режущими материалами.
Залога, Вильям Александрович, Зинченко, Р. Н., Шаповал, Ю. В.   +2 more
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Analysis of Adaptive Fractional-Order Sliding-Mode Control Method Based on Smith Predictor for Voice Coil Motor

Applied Sciences
To satisfy the stringent requirements of ultra-precision systems for high accuracy and rapid dynamic response, the chatter and system delay of voice coil motor (VCM) under operating conditions have become key bottlenecks restricting overall performance ...
Ziyi Shi, Xiaobao Yang
doaj   +1 more source

Is a deep one-cell meridional circulation essential for the flux transport Solar Dynamo?

, 2014
The solar activity cycle is successfully modeled by the flux transport dynamo, in which the meridional circulation of the Sun plays an important role.
Choudhuri, Arnab Rai, Hazra, Gopal, Karak, Bidya Binay   +2 more
core   +1 more source

Digitálisan szabályozott gépészeti rendszerek dinamikája = Dynamics of digitally controlled mechanical systems [PDF]

, 2013
A kutatási projektben digitálisan szabályozott mérnöki szerkezet stabilitásvizsgálatával foglalkoztunk figyelembe véve a szabályozás visszacsatolásának időkésését.
Dombóvári, Zoltán, Forberger, Árpád, Insperger, Tamás, Lukács, Attila, Szabó, Zsolt, Tóth, Viktor   +5 more
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Electromechanical Simulation of Actively Controlled Rotordynamic Systems with Piezoelectric Actuators [PDF]

, 1991
Theories and tests for incorporating piezoelectric pushers as actuator devices for active vibration control are discussed. It started from a simple model with the assumption of ideal pusher characteristics and progressed to electromechanical models with ...
Kascak, A. F., Lin, Reng Rong, Montague, G., Palazzolo, A. B.   +3 more
core   +1 more source

Apollo experience report: Command and service module sequential events control subsystem [PDF]

The Apollo command and service module sequential events control subsystem is described, with particular emphasis on the major systems and component problems and solutions.
Johnson, G. W.
core   +1 more source