Hello, I'm new to Scilab and Xcos so may be making a simple mistake, but I have the following problem. I created an Xcos model of a simple mass-spring-damper with PID control using the data from the Matlab example shown here <http://ctms.engin.umich.edu/CTMS/index.php?example=Introduction§ion=ControlPID> .
The Xcos results are the same as the Matlab example except for the case when all three gains are used as follows Kp=350, Ki=300 and Kd=50 . My result looks like this (red line) and is clearly giving a different response to the Matlab example for the same gain values. <http://mailinglists.scilab.org/file/n4028669/PID.png> I have tried different solvers and time steps, but this doesn't seem to be the problem. I have also modelled the problem in Mathcad 7, Mathcad Prime 3 and using csim in Scilab and all those results agree broadly with the Matlab example. Any advice would be greatly appreciated and I have attached the Xcos file for information. spring-damper-PID.zcos <http://mailinglists.scilab.org/file/n4028669/spring-damper-PID.zcos> -- View this message in context: http://mailinglists.scilab.org/Xcos-PID-controller-problem-tp4028669.html Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com. _______________________________________________ users mailing list [email protected] http://lists.scilab.org/mailman/listinfo/users
