Progress 3

Oct 10th

Main progress for above control system:

PID controller automatically computes previous intensity light of LED to obtain the next value of intensity light. As light intensity of external light increases gradually, light of LED decreases gradually.

Main pseudo code for above control system:

target = 2
ini = 0
pre_input = 0
pwm = 0
while True:
  pre_input = input
  error = input – target
  diff = input – pre_input
  ini += error
  control = p * error + I * ini + D * diff
  pwm += control