Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

random vibration signal (generation)

random vibration signal (generation)

random vibration signal (generation)

we got a voice coil type vibration shaker. we use a signal generator and a power amplifier to drive the shaker. we can do some primitive sinusoidal vibration test (with an accelerometer, a oscilloscope). any stone age device we can use to conduct some random vibration, even just with a flat line on PSD ? thanks.
PS. most vib requirement, 5 to 2,000 Hz. RTCA/DO160, MIL-STD-810....

RE: random vibration signal (generation)

a random vibration signal generator.

RE: random vibration signal (generation)

If you want cheap, you could possibly use a computer sound card output and run that into your amplifier, or any sort of arbitrary waveform generator like: http://www.ebay.com/itm/5MHz-Arbitrary-Waveform-Du... But the latter is just a higher frequency version of a sound card; it's just the latter will probably look less hobby-shop to a customer.

FAQ731-376: Eng-Tips.com Forum Policies

Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx

RE: random vibration signal (generation)

someone can write me couple lines in VB to have such random signal (5 to 2,000 Hz) to sound card ?
most cheap waveform generators do not limit to 2,000 Hz, i do not know how to insert a low pass filter.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close