Transfer Function of actuator
Transfer Function of actuator
(OP)
Hi!!
I am trying to design a position control system based on an electromagnetic actuator. a PID controller seems like a reasonable choice for me to use but I am having problems trying to derive a transfer function for the actuator before I begin designing the controller
any help would be appreciated
thanks!





RE: Transfer Function of actuator
RE: Transfer Function of actuator
Its a SMAC LAL 30-015 moving coil actuator and it is driven by a current loop amplifier.
I am currently trying to measure its performance in terms of robustness. So I am running a MATLAB simulation first of the system and then comparing the results to the actual working model
The amp is a 24v , 5A dc supply
The actuator has a 15mm stroke and peak force of 14.5N
RE: Transfer Function of actuator
K*omega^2/(s*(s^2+2*zeta*omega*s+omega^2)
The second order part would represents the mass in the coil and omega should has a very high frequency. If there isn't much friction then the damping factor, zeta, will be quite low, perhaps 0.1 or smaller. Let use know what you think.
RE: Transfer Function of actuator
Mechanically, the actuator follows Newton's First Law of Motion, F = M x a
If you want a "Killer" amplifier to drive the actuator, look at a LA-400 amplifier from Varedan Technologies
www.varedan.com