Accumulate variable in simulink

Hi all,

Actually I'm trying to apply a temperature control. Initially these temperatures have a difference about 30 units. Then, the control has to apply more power or less to move closer both temperatures.

I've done this using PI control and everything works perfect. Now I'm using fuzzy control. Fuzzy matrix is configured when temperatures difference is positive this control returns +1 and when it's negative it returns -1. I want this number to accumulate in time over a variable (which sets the power to the transfer function). On matlab this is:

variable=variable+fuzzy_result.

So what I want is to initiate the simulation with variable=0. As time goes by this variable accumulates the result from fuzzy block continuously. How can I achieve this in Simulink?

Thanks in advance, David.

[David]

Sorry for this simple question. I finally resolved it using an integrator block.

Regards, David.

[Ocean Blue]

Hello,

What type of block did you use here as I am facing the same problem.

Many Thanks.