Abstract
An unsymmetrical switch circuit is designed for semi-active control method based on synchronized switching damping principle of piezoelectric actuators. A bypass capacitor and an additional switch are used to realize unsymmetrical bipolar voltage. The control logic of the switches is introduced in detail and the switched voltages, which directly influence the control performance, are derived as functions of the vibration amplitude and the outputs of the voltage sources. Simulations were carried out to verify the design circuit and the theoretical results of the switched voltage. The voltage ratio increases with increasing bypass capacitance, but its increasing rate decreases. The results show that large bypass capacitor is needed to realize a voltage ratio of 3, which is common in some piezoelectric actuator such as MFC.
Original language | English |
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Title of host publication | Active and Passive Smart Structures and Integrated Systems 2014 |
Publisher | SPIE |
Volume | 9057 |
ISBN (Print) | 9780819499837 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | Active and Passive Smart Structures and Integrated Systems 2014 - San Diego, CA, United States Duration: 10 Mar 2014 → 13 Mar 2014 |
Conference
Conference | Active and Passive Smart Structures and Integrated Systems 2014 |
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Country/Territory | United States |
City | San Diego, CA |
Period | 10/03/14 → 13/03/14 |
Keywords
- Non-symmetrical circuit
- Piezoelectric elements
- Semi-active control
- Synchronized switch damping
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering