×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

hydraulic actuator-mechanical synchronization
2

hydraulic actuator-mechanical synchronization

hydraulic actuator-mechanical synchronization

(OP)
I am currently doing one project on hydraulic actuator synchronization using mechanical coupling( rigid coupling) as part of my internship. it is cost effective, don't have any complicated controls. just pump the fluid. since it is rigid and the mass is centralized the volume and pressure should be equal to both actuators.

This is the basic structure -->
when I was doing my research, I came across so many models which using other techniques like servo valves, but I hardly saw anything about the mechanical coupling., What are the disadvantages of this system?

PS- the connection is rigid, the weight is centralized, might have slight leakage (assuming, since it is for practical use).

RE: hydraulic actuator-mechanical synchronization

2 or more cylinders or motors that have a mechanically rigid connection will not need a flow divider or flow sharing capability. With a common flow supply, the principle of fluid dynamics dictates that the cylinders / motor will move at the same speed as the load is evenly distributed.

Where the cylinders / motors move independent loads - or see different pressures, then a method of synchronizing is required.

Depending on the level of synchronicity required, this can be achieved by a flow divider or closed loop control. If the level of speed and position control needs to be highly accurate and highly dynamic, then servo valves are employed with a very high level of PID control.

RE: hydraulic actuator-mechanical synchronization

The reason it doesn't happen often is that making the structure sufficiently rigid is usually more difficult than adding synchronizers.

The time I recall seeing it done, the cylinders were very close together to minimize load differences and were only paired due to space limitations that precluded a larger diameter single cylinder, which would have been the primary choice - capacity goes up as the square of the diameter, so a 40% larger size = 2 cylinders, with less plumbing, less chance for leaks, et al.

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!


Resources


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