Help! Transfer Function for Hydraulic Electro-hydraulic actuator
Help! Transfer Function for Hydraulic Electro-hydraulic actuator
(OP)
I am looking for help with a project that I am involved with for my post-graduate studies.
I will be performing the control design and some simulation for an electrohydraulic actuator for aircraft flight control surface actuation.
This is a hydraulically powered actuator that is controlled by a electrohydraulic servo valve, that uses current to two coils to control the position of the metering (flapper) valve. The feedback of the actuator position is by LVDT.
What I need is a rough model or transfer function to work with to start the simulation and control design.
Help! Any tips or information would be greatly appreciated.
Thanks,
Sean
M. Eng almost





RE: Help! Transfer Function for Hydraulic Electro-hydraulic actuator
----------------------------------
If we learn from our mistakes,
I'm getting a great education!
RE: Help! Transfer Function for Hydraulic Electro-hydraulic actuator
www.servovalve.com/technical/new_tb_103.pdf
RE: Help! Transfer Function for Hydraulic Electro-hydraulic actuator
Thanks for the tip - that definitely will set me in the corect direction. Given the amount of variables involved in such a device, I will likely have to use a simplified model, for the purposes of synthesis and control design. That Moog document will be a huge help. Any more thoughts are appreciated. I am very impressed with this site, and have sent the link to all my colleagues and engineering friends (I work in flight controls and hydraulics, currently in a customer support role).
Cheers,
Sean