Results 41 to 50 of about 85,414 (206)
Progress depends on unbalance and disorder [PDF]
1997 International Symposium on Technology and Society Technology and Society at a Time of Sweeping Change. Proceedings, 2002 Walking is a state of unbalanced body-not to fall down, it takes away. Technology is another state of progress depending on unbalanced structures of human functions and relations. In balanced societies and cultures which are considered as technologically primitive, what we see is a lack of technology, but also a state of balance and order.
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Functional assessment of patients with vertigo and dizziness in occupational medicine
Medycyna Pracy, 2018 Background Balance assessment relies on symptoms, clinical examination and functional assessment and their verification in objective tests. Our study was aimed at calculating the assessment compatibility between questionnaires, functional scales and ...
Ewa Zamysłowska-Szmytke +2 more
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P-class phasor measurement unit algorithms using adaptive filtering to enhance accuracy at off-nominal frequencies [PDF]
, 2011 While the present standard C.37.118-2005 for Phasor Measurement Units (PMUs) requires testing only at steady-state conditions, proposed new versions of the standard require much more stringent testing, involving frequency ramps and off-nominal frequency ...
Abdulhadi, I. F +2 more
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Piezoceramics-based Devices for Active Balancing of Flexible Shafts [PDF]
, 2006 This paper focuses on vibration control of flexible shafts by means of rotorfixed piezoelectric materials. The target is to realize compact solutions for the suppression of problematic resonant vibration at so-called flexural critical speeds.
Boer, A. de, Sloetjes, P.J.
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Identification of Rub and Unbalance in 320-MW Turbogenerators [PDF]
The International Journal of Rotating Machinery, 2003 This article presents two experiences of applying a model‐based fault‐identification method to real machines. The first case presented is an unbalance identification in a 320 MW turbogenerator unit operating in a fossil power plant. In the second case, concerning a machine of the same size but from a different manufacturer, the turbine has been ...
BACHSCHMID, NICOLO' +4 more
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Fault diagnosis method for rotor system of centrifugal compressor units
You-qi chuyun, 2023 The rotor system of the centrifugal compressor unit comprises the rotor and the support structure. The change in the rotor balance state and the abnormal stiffness of the composite spring are common faults of the rotor system.
LIU Baoxia, WANG Meng, MA Yulei
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Active Currents, Power Factor, and Apparent Power for Practical Power Delivery Systems
IEEE Access, 2020 Concepts of apparent power and power factor as measures of a system's power delivery capability are over a century old but have not been defined in one general, rigorous and acceptable way.
Michel Malengret, C. Trevor Gaunt
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Dual clearance squeeze film damper [PDF]
, 1985 A dual clearance hydrodynamic liquid squeeze film damper for a gas turbine engine is described. Under normal operating conditions, the device functions as a conventional squeeze film damper, using only one of its oil films.
Fleming, D. P.
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Influence of grid configuration on current conducting behaviour in PV installations [PDF]
, 2011 On the roof of an industrial site a 385 kWp PhotoVoltaic installation is operational. When production of this system reaches 60% of the installed power, the circuit breaker trips.
Debruyne, Colin +3 more
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Unbalance and Vibration of High-Speed Sewing Machine (Part I. Unbalance)
Journal of the Japan Society of Precision Engineering, 1959 Unbalance and vibration of a Japan-made sewing machine (DDW-Type) were studied. Both the needle and its holder of this machine move up and down in its running condition, and therefore they produce unbalane force in its vertical direction. This unbalance force may, however, be cancelled by attaching a certain balance weight to its mainshaft, but by this
Genrokuro NISHIMURA, Yasuo JIMBO
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