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Feedback/feedforward control of hysteresis-compensated piezoelectric actuators for high-speed scanning applications
- Source :
- Smart Materials and Structures. 24:015012
- Publication Year :
- 2014
- Publisher :
- IOP Publishing, 2014.
-
Abstract
- This paper presents the control system design for a piezoelectric actuator (PEA) for a high-speed trajectory scanning application. First nonlinear hysteresis is compensated for by using the Maxwell resistive capacitor model. Then the linear dynamics of the hysteresis-compensated piezoelectric actuator are identified. A proportional plus integral (PI) controller is designed based on the linear system, enhanced by feedforward hysteresis compensation. It is found that the feedback controller does not always improve tracking accuracy. When the input frequency exceeds a certain value, feedforward control only may result in better control performance. Experiments are conducted, and the results demonstrate the effectiveness of the proposed control approach.
- Subjects :
- Engineering
Resistive touchscreen
business.industry
Linear system
Feed forward
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Compensation (engineering)
law.invention
Capacitor
Hysteresis
Mechanics of Materials
Control theory
law
Signal Processing
Electronic engineering
Trajectory
General Materials Science
Electrical and Electronic Engineering
business
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 1361665X and 09641726
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Smart Materials and Structures
- Accession number :
- edsair.doi...........da84807eb58baf14ca73b277bb32f28b