Re: Help with actuator model

		Hello All, 
		I am working in a project of UAV  
		In this project we have a piloted step before the flight was
automatic and we are using FlightGear as a training tool for the pilot. We
would like to add to our aircraft model (Jsbsim model) the behaviour of the
actuators and I have read in
http://jsbsim.wiki.sourceforge.net/JSBSim+Users+Manual the following
information:  
		  
		'' Actuator Component''  
		Encapsulates an Actuator component for the flight control
system. The actuator can be modeled as a "perfect actuator", with the Output
being set directly to the input. The actuator can be made more "real" by
specifying any/all of the following additional effects that can be applied
to the actuator. In order of application to the input signal, these are:   
		  
		However When i have tried it the actuator component is not
recognized as a real component.  
		How can i implement in my aircraft model a model for the
behaviour of the actuators?  
		I would much appreciate any help because it is very
important to me checking if my aircraft is going to be controlable at high
speed.  
		Thank you in advance,  
		juanma 
		 

		Juan Manuel de las Heras

Hello, Juan:

I apologize for not answering sooner. I have seen your question at the
JSBSim forum, but I have not had time until this morning. Can you tell me
the exact error you are seeing? Here is one example from the c172x.xml file
that comes from JSBSim CVS:

<aerosurface_scale name="fcs/elevator-control">
    <input>fcs/pitch-trim-sum</input>
    <range>
        <min>-28</min>
        <max> 23</max>
    </range>
    <gain>0.01745</gain>
</aerosurface_scale>

<actuator name="fcs/elevator-actuator">
  <input> fcs/elevator-control </input>
  <lag> 60 </lag>
  <bias> 0.002 </bias>
  <hysteresis_width> 0.05 </hysteresis_width>
  <clipto>
    <!-- +/- 20 degrees (in radians)-->
    <min> -0.34 </min>
    <max>  0.34 </max>
  </clipto>
  <output>fcs/elevator-pos-rad</output>
</actuator>

In the above example, you can see that the actuator component input comes
from the previous component (aerosurface_scale). Can you show us the
<actuator> code you are using?

Jon

-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/

_______________________________________________
Flightgear-flightmodel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/flightgear-flightmodel