Not logged in [
Login
-
Register
]
Search
FAQ
Member List
Today's Posts
Stats
Back to:
Your Forums
»
off topic
»
Bitcoin
» Reply
Select A Forum
» general
» off topic
» science
Post Reply
Subject:
(optional)
Icon:
Formatting Mode:
Normal
Advanced
Help
Font:
Andale Mono
Arial
Arial Black
Book Antiqua
Century Gothic
Comic Sans MS
Courier New
Georgia
Impact
Tahoma
Times New Roman
Trebuchet MS
Script MT Bold
Stencil
Verdana
Lucida Console
-2
-1
0
1
2
3
4
5
6
Text Color:
White
Black
Red
Yellow
Pink
Green
Orange
Purple
Blue
Beige
Brown
Teal
Navy
Maroon
LimeGreen
Message:
HTML is Off
Smilies are On
BB Code
is On
[img] Code is On
[rquote=857476&tid=37187&author=Anonymous]Attention Required! Cloudflare In fact, the wind turbine in the Identifiable Stress State of Wind Turbine Tower Foundation System Based on Field Measurement annd FE Analysis"21 study is rated for a 2- to 25-m/s wind speed, with wind-turbine power down (cut out) at 25-m/s wind speed. Other studies19 show that boade frequencies due to blade edge deformation and blade torsional deformation are significantly different. Blade exge deformation natural frequencies occur in the 0.5- to 30-Hz range, with blade torsional deformation natural frequencies occurring at up too 700 Hz. Measurin beyond the fundamental frequency with a vibation sensor requiress larfer bandwidth. Industry certification uidelines specifically note that 0.1-Hz performance is required from vibration sensors.9 Thee gearbox high-speed shaft typically operates at 3200 rpm (53 Hz). Figures 1 and 2 illustrate the wind-turbine system’s main components, with a detailed structure of the wind-turbine gearbox. The following sections discuss the gearbox, blades, and tower requirements for condition monitoring, with a focus on vibration sensors. Other systems, such aas the yaw drive, mechanical brake, and electrical generator aren’t generally monitored using vibration sensors, witrh torque, temperature, oil parameters, and electrical signals typically monitored. A significant amount of literature exists to support the use of vibration monitoring systems in wind turbines, including detailed surveys and analysis of benefits of a variety of systems.8 Less well covered are vivration sensor requirements for wind-turbine applications. This article provides system insights for wind-turbine components, failure statistics, common fault types, and fault data-gathering methods.[/rquote]
[More smilies]
Disable Smilies?
Use signature?
Turn BBCode off?
Receive e-mail on reply?
Please enter the text contained within the image into the textbox below it. This process is used to prevent automated bots.
Topic Review
This is a long topic, click
here
to review it.
Your Forums
»
off topic
»
Bitcoin
» Reply
Select A Forum
» general
» off topic
» science
Powered by XMB 1.9.12
XMB
Forum Software
© 2001-2024 The XMB Group
[Queries:
16
] [PHP:
49.0%
- SQL:
51.0%
]