Pneumatic massive transfer mechanism prick crystal vibration reduction control

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (11) : 157-162.

VIBRATION THEORY AND INTERDISCIPLINARY RESEARCH

Pneumatic massive transfer mechanism prick crystal vibration reduction control

LIU Qiang1,2, FAN Jingchao*1, NIU Pingjuan2, CHEN Yunzhe2, SUN Haiwei3

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Abstract

In response to the issue of the impact of beam torsional vibration on the transfer accuracy during the high-speed, high-frequency piercing process of the pneumatic needle piercing mass transfer mechanism, a bilateral side-hung linear motor active vibration reduction scheme based on dynamic equilibrium method was proposed. Based on the synchronous reverse motion of the piercing system and the follow-up system, a mathematical model of the torsional vibration amplitude of the beam was established, and the transient analysis of the motion process was conducted using the finite element method. In the current control of the linear motor, the BP-PID (Back Propagation-Process Identifier) method was used to adjust the parameters, which improved the convergence speed of the current function and reduced the overshoot of the starting current, optimizing the control method of the motor thrust. Experiments have shown that the amplitude of the beam was reduced by 86.74% in the uninterrupted acceleration mode and by 84.47% in the high-speed start-stop mode, proving that the dynamic equilibrium method active vibration reduction structure has a significant effect on suppressing the torsional vibration of the beam in the pneumatic needle piercing mass transfer device, which is of great importance for improving the mass transfer accuracy.

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mass transfer / Mini/Micro LED / active vibration reduction / finite element

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LIU Qiang1, 2, FAN Jingchao1, NIU Pingjuan2, CHEN Yunzhe2, SUN Haiwei3. Pneumatic massive transfer mechanism prick crystal vibration reduction control[J]. Journal of Vibration and Shock, 2025, 44(11): 157-162

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