All of the following are example of feed forward control system except
BP regulation is example of negative feedback control.
Feedforward control :
In this, it anticipates the discharge and prevent the change in 'controlled variable' by generating a corrective command that anticipates the change in 'controlled variable'
Example :

Temperature regulation
Cephalic phase of gastric secretion
Increase in heart rate and respiratory rate even before exercise.
Cerebellar action in motor co-ordination.
Temperature regulation
BP regulation
Cephalic phase of gastric secretion
Increased heart rate before start of exercise