A parameterized model for the impact dynamics of a piezoelectric microactuator is proposed, and a system identification procedure for quantifying model parameters presented. The proposed model incorporates squeeze-film damping, adhesion, and coefficient-of-restitution effects. Following parameter quantification from sample data of bouncing impacts and progressive ramped-square-wave inputs, the model is found to be effective at predicting the time response of the actuator to a range of square wave and sinusoidal input. Presence, absence, and quantity of bounces upon impact is successfully predicted, while error in oscillation amplitudes and contact durations range from 1–25% over many test cases of periodic inputs between 5 and 100 Hz.
- Dynamic Systems and Control Division
System Identification of Contact Dynamics for a Piezoelectric Microactuator
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Ryou, JH, & Oldham, KR. "System Identification of Contact Dynamics for a Piezoelectric Microactuator." Proceedings of the ASME 2012 5th Annual Dynamic Systems and Control Conference joint with the JSME 2012 11th Motion and Vibration Conference. Volume 2: Legged Locomotion; Mechatronic Systems; Mechatronics; Mechatronics for Aquatic Environments; MEMS Control; Model Predictive Control; Modeling and Model-Based Control of Advanced IC Engines; Modeling and Simulation; Multi-Agent and Cooperative Systems; Musculoskeletal Dynamic Systems; Nano Systems; Nonlinear Systems; Nonlinear Systems and Control; Optimal Control; Pattern Recognition and Intelligent Systems; Power and Renewable Energy Systems; Powertrain Systems. Fort Lauderdale, Florida, USA. October 17–19, 2012. pp. 227-234. ASME. https://doi.org/10.1115/DSCC2012-MOVIC2012-8698
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