Opening, Feedforward, Business, Feedback and closing

· Feedback control

· Concurrent control

· Feedforward control

Feedforward is a preparatory control.

EX. Smelling food leads to salivation and production of stomach acid in preparation of food. OR Starting to exercise increases heart rate and breathing rate in preparation of running low on oxygen for muscles.

Feedback is a control mechanism where the product of the end mechanism either enhances or inhibits the start of the mechanism

Positive feedback enhances

Negative feedback inhibits

One major advantage of feedforward controls is that it prevents large disturbances in your output