Dynamic Decoupling and Simulation Research on Control System of New Servo Cylinder of Rolling Cutter Servo Cylinder

doi:10.3901/JME.2019.06.203

Abstract

Abstract: The servo cylinder with full hydraulic roll cutting provides precise curve force for the knives. Due to the horizontal hinged installation of heavy duty cylinders, the self weight of the cylinder will cause the friction of the sealing part to be too large, resulting in the phenomenon of insufficient output and so on. In order to overcome the influence of self weight on the seal, a small cylinder is used to support the end of the servo cylinder at the full hydraulic rolling cutting shear, and a pressure position double closed loop PID control system is designed. The system can accurately control the pressure and displacement of the small cylinder to meet the required conditions. The coupling characteristics of the control system are analyzed, and the mathematical model of the independent closed loop control system for pressure and position is deduced, and the stability analysis is carried out. On the basis of theoretical analysis, the AMESim/Matlab joint simulation is used to further verify the rationality of the pressure position double closed loop independent PID control system. The results show that the control system can control the pressure and displacement of the small cylinder accurately, and the heavy load horizontal cylinder is not affected by the self weight factor in the output curve force, and the sealing device is almost free from friction. The feasibility and reliability of the control system are proved by engineering tests, which provides important basis for theoretical analysis and practical application.

Key words: anti-friction, control system, co-simulation, decoupling, horizontal cylinder

CLC Number:

TH137

MA Linan, ZHAO Xiaodong, MA Lifeng, MA Qiangjun, HAN Heyong. Dynamic Decoupling and Simulation Research on Control System of New Servo Cylinder of Rolling Cutter Servo Cylinder[J]. Journal of Mechanical Engineering, 2019, 55(6): 203-212.

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