PLC distributed synchronous hydraulic system based on PROFIBUS

LIU Xuewei , YAN Sijie , ZHU Hengjia

(School of Mechanical Science & Engineering ,Huazhong University of Science & Technology , Wuhan 430074, China)

Abstract: In order to solve the problems of the need of multipoint for synchronous lift in large structure objects engineering, the state instability in communication system, and the complexity in control system,a PLC distributed synchronous hydraulic system based on PROFIBUSDP  was designed The communication mode of PROFIBUSDP was adapted, and a distributed system in reliable communication was established. Meanwhile,  combined fuzzy P selfadaptive closedloop control and feedforward openloop control methods, the displacement synchronization in “equal basis way”was realized The experimental results show that the whole of control system designed has good features in good extensibility, stable communication that can be diagnosed, and synchronous precision within positive and negative 03 mm, which satisfies voice of engineer

Key words: PROFIBUSDP；PLC distributed control；synchronous hydraulic；fuzzy selfadaptive；KingView