Time Delay Filter-Based Deadbeat Control of Process with Dead Time

This paper presents the time delay filter (TDF) in which time delay is intentionally adopted in a filter and then time delay filter-based deadbeat control of a process with first-order plus dead time is implemented. The system stability is guaranteed with the Nyquist criteria and the PI controller is tuned by the frequency specifications. The time delay filter is designed to cancel the poles of the closed-loop PI control system. Examples show that the proposed method is very effective and is robust to modeling errors.