Based on energy transfer theory, the power flow method is used to optimize the piezoelectric actuator to improve its output performance. First, the mode analysis of the piezoelectric actuator is performed, and the actuator is discretized according to the mode nodes of the operational mode. On the basis of the Norton's equivalent circuit, the equivalent mechanical network of the actuator is established, and the expression of power flow is imported to the mass block of driving foot. Second, on the basis of the actuator power flow expression, simulation analysis is conducted to obtain the influence of actuator parameters on the power flow amplitude for optimizing the driver parameters. Finally, a test platform is built to compare the improved piezoelectric actuator with the original one. Results show that the output force and power of the improved piezoelectric actuator have increased by 8.3% and 22%, respectively, to verify the effectiveness of the optimization method.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1063/1.5127165 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reprogrammable Flexible Piezoelectric Actuator Arrays with a High Degree of Freedom for Shape Morphing and Locomotion.
Soft Robot
January 2025
State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, China.
The high degree of freedom (DoF) shape morphing widely exists in biology for mimicry, camouflage, and locomotion. Currently, a lot of bionic soft/flexible actuators and robots with shape-morphing functions have been developed to realize conformity, grasp, and movement. Among these solutions, two-dimensional responsive materials and structures that can shape morph into different three-dimensional configurations are valuable for creating reversible high DoF shape morphing.
View Article and Find Full Text PDFActive alignment control system for thin disk regenerative amplifier.
Rev Sci Instrum
January 2025
HiLASE Centre, Institute of Physics of the Czech Academy of Sciences, Za Radnicí 828, 252 41 Dolní Břežany, Czechia.
We present an active alignment and stabilization control system for laser setups based on a thin-disk regenerative amplifier. This method eliminates power and pointing instability during the warm-up period and improves long-term stability throughout the entire operation. The alignment method is based on a four-mirror control system consisting of two motorized mirrors placed within the regenerative amplifier cavity, two additional motorized mirrors external to the amplifier cavity, and four camera detectors.
View Article and Find Full Text PDFLongitudinal strain enhancement and bending deformations in piezoceramics.
Nature
January 2025
Department of Materials Engineering, Indian Institute of Science, Bangalore, India.
Piezoelectric materials directly convert between electrical and mechanical energies. They are used as transducers in applications such as nano-positioning and ultrasound imaging. Improving the properties of these devices requires piezoelectric materials capable of delivering a large longitudinal strain on the application of an electric field.
View Article and Find Full Text PDFPET-PZT Dielectric Polarization: Electricity Harvested from Photon Energy.
Micromachines (Basel)
December 2024
Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA.
The effect of residual stress or heat on ferroelectrics used to convert photons into electricity was investigated. The data analysis reveals that when the PET-PZT piezoelectric transducer is UV-irradiated with a 405 nm wavelength, it becomes a photon-heat-stress electric energy converter and capacitator. Our objective was to evaluate the PET-PZT photon-heat-stress electric energy conversion performance and the role of the light's wavelength and intensity.
View Article and Find Full Text PDFRecent Advances in Piezoelectric Compliant Devices for Ultrahigh-Precision Engineering.
Micromachines (Basel)
November 2024
Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Avenida da Universidade, Taipa, Macau, China.
With advancements in small-scale research fields, precision manipulation has become crucial for interacting with small objects. As research progresses, the demand for higher precision in manipulation has led to the emergence of ultrahigh-precision engineering (UHPE), which exhibits significant potential for various applications. Traditional rigid-body manipulators suffer from issues like backlash and friction, limiting their effectiveness at smaller-scale applications.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!