Hàm truyền của bộ điều khiển bù pha rời rạc có dạng:

\({G}_{c}\left. z \right.=K\frac{\left. aT+2 \right.z+(aT-2)}{\left. bT+2 \right.z+(bT-2)}\)

\({G}_{c}\left. z \right.=K\frac{\left. aT+2 \right.z-(aT-2)}{\left. bT+2 \right.z+(bT-2)}\)

\({G}_{c}\left. z \right.=K\frac{\left. aT+2 \right.z-(aT-2)}{\left. bT+2 \right.z-(bT-2)}\)

\({G}_{c}\left. z \right.=-K\frac{\left. aT+2 \right.z+(aT-2)}{\left. bT+2 \right.z+(bT-2)}\)