Neural Networks-Based PID Precision Motion Control of a Piezo-Actuated Microinjector
Piezoelectric actuators are widely employed in the field of micro-/nanomanipulation. However, hysteresis is the dominant issue in piezoelectric actuators, which leads to a great challenge to achieve high precision micromanipulation. Proportional-integral-derivative (PID) control is an efficient approach to reduce hysteresis effect in piezoelectric actuators. However, its parameter tuning is a time-consuming work for PID motion tracking control implementation. In this work, the neural networks (NN) is adopted to provide a functional model for PID with optimized parameters. It enables an intelligent and adaptive motion tracking process. The effectiveness of the presented NN-based PID control scheme is verified by performing simulation studies.
KeywordsPiezoelectric actuator Hysteresis PID control Neural networks Precision motion control
This work was supported in part by the National Natural Science Foundation of China under Grant 51575545, the Macao Science and Technology Development Fund under Grant 179/2017/A3, and Research Committee of the University of Macau under Grant MYRG2018-00034-FST.
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