Problems with defining a Conditional Formula - Max Y-axis value

Hello,

I am looking for a way to solve a formula upto a certain y (P_Cathode) value, what would be the possible ways to go about this?

I was thinking doing using if, else statements but they do not seem to work. At this point I feel lost.

code:

t = [0:1:500]; 
if P_Cathode >= P_Max_Storage_Pa; 
    P_Cathode >= P_Max_Storage_Pa; %[Pa]
else
    P_Cathode = P_Start_Storage_Pa+((Molair_Mass_Flow_Hours*t)*R*T_Hydrogen_Cathode_K)/(V_storage_m3); %[Pa]
end

Here P_Max_Storage_Pa has a defined value.

Matlab states "Unrecognized function or variable 'P_Cathode'" and I don't know how to solve this, as this is a formula that is solved.

Answer 1

[Walter Roberson]

P_Cathode = min(P_Max_Storage_Pa, P_Start_Storage_Pa+((Molair_Mass_Flow_Hours*t)*R*T_Hydrogen_Cathode_K)/(V_storage_m3) )

[Mark Janssen]

Thanks a lot,

The correct values now appear in the command window, but the workspace still displays it wrongly, how would I get the correct values into the workspace, so I can plot them?

[Walter Roberson]

That code is an asignment. If the output displayed from it does not match the values stored in the variables, there are a few possibilities:

• you are using format short which is abbreviating the display in a way that is misleading you about what the values really are. Use format long g instead.
• your preferences for looking at the workspace are using a format that is misleading you as to what the values really are. The workspace browser has a drop-down that allows you to select a different format, or you can set something in Preferences to give you a better format
• or perhaps you are looking in the wrong workspace
• or perhaps you did not arrange to return the P_Cathode calculated here into the right workspace