Benjanarasuth, Taworn

Preferred name

Benjanarasuth, Taworn

Alternative Name

Benjanarasuth, T.

Main Affiliation

School of Engineering

Email

taworn.be@kmitl.ac.th

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PLL in cooperated with PI controller for flow control system
(1999-12-01)
Wanchana, S.
;
Benjanarasuth, T.
;
Komine, N.
;
Ngamwiwit, J.
This paper presents the flow control system using the phase-locked loop technique in cooperated with PI controller. The PI controller is utilized to pull the flow rate of the system into the phase-locked loop locking range and the steady state flow rate will be controlled later by the phase-locked loop. An experimental system is implemented to evaluate the performance of the flow control system using the proposed control method. The experimental results in controlling the system in the laboratory show that the overshoot is approximately 10% for the 50% step input of the maximum flow rate and the steady-state error is smaller than ±2%. The experimental results also indicate that the effect of load disturbance is rapidly rejected.