MATLAB: Detect in simulink if the current and past 4 values are same or not

Question

Hi, I am interested in designing a simulink block which detects if the past 4 and the current input values are same or not. How to do it using the delay blocks and relational operators since the relational operators take only two inputs at a time?

Answer 1

You can use 4 delay blocks, and feed x_t and x_{t-1} into one relational block, x_{t-1} and x_{t-2} into the next relational block, and then use AND blocks to combine.

Titus