Mathematical Modeling and Simulation of Hydraulic Gauge Control System

doi:10.16182/j.issn1004731x.joss.201810024

Abstract

Abstract: On the basis of hydraulic valve control cylinder model and combining with the structure and load characteristics of the hydraulic gauge control system (HGC), a “flow linearization” model for HGC was presented and the shortcomings of the model in analyzing the dynamic characteristics of HGC were pointed out. In view of the characteristics of the large load variation range of HGC and according to the principle of “load compensation”, the flow correction coefficient and the related transfer function were analyzed and deduced, and the mathematical model of HGC based on “load compensation” was established. Combined with a practical case of rolling mill in a hot rolling plant, the characteristic and difference of the two models were simulated and compared with the experimental results. The simulation results show that the “load compensation” model has higher control precision, which provides a reference for the characteristic analysis and design optimization of the hydraulic gap valve controlled cylinder system.

Key words: servo valve, valve controlled hydraulic cylinder, HGC, dynamic characteristics

CLC Number:

TP391.9

Li Weigang, Tao Guilin. Mathematical Modeling and Simulation of Hydraulic Gauge Control System[J]. Journal of System Simulation, 2018, 30(10): 3789-3795.

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