Transactions of Materials and Heat Treatment

Title：Fuzzy self-tuning integral separation PID synchronous control on multi-cylinder hydraulic press

Authors： Wu Cuihong Hao Xin

Unit： Mechanical and Electrical Engineering College Changchun College of Electronic Technology

KeyWords： multi-cylinder hydraulic press fuzzy self-tuning integral separation PID control adjacent cross-coupling synchronization control synchronization error

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):146-153

Abstract：

In order to reduce the tracking error of given displacement and the synchronization error between hydraulic cylinders for multi-cylinder hydraulic press, the adjacent cross-coupling fuzzy self-tuning integral separation PID synchronization controller was designed, and the dynamic equation of synchronous control system was established by taking the valve control voltage of hydraulic valve as the control quantity and the displacement of piston rod as the output quantity. Then, the adjacent cross-coupling synchronous control scheme was selected as the basic scheme, and the fuzzy self-tuning integral separation PID control method was proposed by combining the integral separation PID control with fuzzy theory. The simulation results show that the effect of adjacent cross-coupling synchronization control is better than that of the master-slave synchronization scheme and the equel synchronization scheme in terms of overshoot, adjustment time and synchronization error, and the fuzzy self-tuning integral separation PID control is better than the fuzzy PID control. The overshoot is 3.2%, and the maximum synchronization error is 0.17 mm during the pressing process of hydraulic press when the maximum load is 270.4 kN which are verified by control experiment of 3000 kN hydraulic press, indicating that the designed controller has good synchronization control effect.

Funds：

吉林省教育厅十三五科学技术项目（JJKH20200612KJ）

吴翠红（1976-），女，硕士，副教授 E-mail：wtk180@163.com

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