Dynamic Compensation Suppression and Fluctuation Modeling of Counterweight Disturbance for Linear Motor with Vertical Layout

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (9) : 202-209.

CHEN Jian1，2， WANG Jin 1， SHANG Yong-zhang1，LU Guo-dong1

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Abstract

Considering the characteristics of vertical layout linear motor shock caused by the counterweight disturbance, two key fluctuation factors are extracted and summed up, which are balance force and friction force. Based on one-dimensional flow theory with isentropic adiabatic feature, balance-force fluctuation model is put forward. According to principle of Stribeck, the improved friction-force fluctuation model is also given. Considering the PMSLM＇s flux equation, the dynamic compensator method is developed to suppress the counterweight disturbance. Combining with the double PID uncoupling and fuzzy PID self-adaptive parameter adjustment, the spindle control system with vertical layout linear motor is set up. Simulation and experiment results show that the vibration and velocity fluctuation are significant suppressed, precision of position and molding is superior to the conventional control strategy.

Key words

linear motor with vertical layout / counterweight fluctuation / balance-force fluctuation model / friction-force fluctuation model / dynamic compensation

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CHEN Jian1，2， WANG Jin 1， SHANG Yong-zhang1，LU Guo-dong1. Dynamic Compensation Suppression and Fluctuation Modeling of Counterweight Disturbance for Linear Motor with Vertical Layout[J]. Journal of Vibration and Shock, 2015, 34(9): 202-209

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