How count pulse when go up in simulink, to obtaint the speed of the motor throught a encoder that emits 50 pulses for revolution. This is in discrete time 0.001. I delay the pulse and compare the pulse with the delay, but neither not count good and reset the counter a zero. Besides i do this through embedded function that this, where u is the pulse, u_r is the pulse delay, t is a clock, an y_r is the feedback of y. I need help, please.
function [y] = fcn(u,u_r,t,y_r) %#eml
persistent count; persistent tiempo;
if isempty(count) count=0; end
if isempty(tiempo) tiempo=0; end
y=y_r; % Realimentacion de velocidad
if count==0 % Si contactor esta cero, ponemos en marcha el tiempo tiempo=t; end if u==1 && u_r==0 % Si detecta flanco positivo, aumenta el contador count=count+1; end if count==50; % suponemos da 50 pulsos por vuelta, % Si llega a 50 pulsos, calculamos tiempo en dar una vuelta y=t-tiempo; count=0; % reseteamos contador end
