How can i detect the positive and negative peaks every rate of my input sinusoidal signal on simulink ?

Hello everyone, i have a problem with my project on simulink, i have a sinusoidal signal input, its amplitude changes with time, i need to detect the positive and negative value of the peaks every rate, how can i do that ?

[Birdman]

Share your model.

Answer 1

[El Mehdi FADEL]

this is my simple model

Answer 2

[El Mehdi FADEL]

Answer 3

[El Mehdi FADEL]

Answer 4

[El Mehdi FADEL]

i need to detect the positive and negative peak every periode