Unfortunately there is no option to automatically set the axes labels or name in figure generated by simulink X-Y graph.
However, after simulation, you can manually add axes names from figure GUI or from command window.
From Figure GUI
- Select the X-Y graph generated by simulink. Run below cammands in command window
set(0,'ShowHiddenHandles','on')
set(gcf,'menubar','figure')
- These commands will enable the toolbar in X-Y graph figure window. You can add axes names from Insert >> X Label and Insert >> Y Label.
From command window
After the simulation, select X-Y plot window and run these command in command window
xlabel('X_Axis_Name')
ylabel('Y_Axis_Name')
set(gcf,'name','Figure Name')