Reply To: Fractional PID Controller Design

[dhar]

Dear Aleksei,
Im trying to run the fpid_optim .fig file fpid_optim .m file, which is used to find out the fractional order PID parameters through FPID Optimum tool. but wen im trying to fix the gain parameters in the table it getting the errors listed below

Attempt to reference field of non-structure array.

Error in fpid_optim>menuFix_Callback (line 957)
set(handles.txtLam, ‘Enable’, expEnable);

Error in gui_mainfcn (line 96)
feval(varargin{:});

Error in fpid_optim (line 24)
gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)fpid_optim(‘menuFix_Callback’,hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback.

if there is any example program regarding this problem please send me….
thank you in advance………..