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Structural Scheme of an Engine for Nanomedicine and Nanotechnology
Abstract
The structural model of an engine is determined for nanomedicine and nanotechnology. The structural scheme of an engine for nanodisplacement is obtained. The matrix equation is constructed for an engine for nanomedicine and nanotechnology
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The manipulator is the key component of the micromanipulator. Using the axial expansion and contraction properties, the piezoelectric tube can drive the manipulator to achieve micro-motion positioning. It is widely used in scanning probe microscopy, fiber stretching and beam scanning. The piezoceramic tube actuator used to have continuous electrodes inside and outside. It is polarized along the radial direction. There are relatively high polarization voltages, but poor axial mechanical properties. A new tubular actuator is presented in this paper by combining interdigitated electrodes and piezoceramic tubes. The preparation, polarization and mesoscopic mechanical properties were investigated. Using Lead Zirconate Titanate (PZT-52) as a substrate, the preparation process of interdigitated electrodes by screen printing was studied. For initial polarization voltage determination, the local characteristic model of the actuator was extracted and the electric field was analyzed by a finite element method. By measuring the actuator’s axial displacement, we measured the actuator’s polarization effect. Various voltages, times and temperatures were evaluated to determine how polarization affects the actuator’s displacement. Optimal polarization conditions are 800 V, 60 min and 150 °C, with a maximum displacement of 0.88 μm generated by a PZT-52 tube actuator with interdigitated electrodes. PZT-52 tube actuators with a continuous electrode cannot be polarized under these conditions. The maximum displacement is 0.47 μm after polarization at 4 kV. Based on the results, the new actuator has a more convenient polarization process and a greater axial displacement from an application standpoint. It provides technical guidance for the preparation and polarization of the piezoceramic tube actuator. There is potential for piezoelectric tubular actuators to be used in a broader range of applications.
A new piezoelectric actuator combining interdigitated ring electrodes and a PZT-52(Lead Zirconate Titanate) disk was investigated for the large displacement requirements of piezoelectric actuators. Finite element models were established according to the structural characteristics of the actuator and static analysis was carried out based on ANSYS software. Then Ø25 mm × 2 mm samples were prepared. The displacement detection system was established, and the influence of electrode structure on radial displacement was studied experimentally. A comparison between the experimental results and the finite element analysis confirmed that the finite element model was correct. The results showed that the effect of electrode width on displacement was small. With decrease in electrode center distance and increase in the number of electrodes pairs, the radial displacement increased correspondingly. The peak of radial displacement was 1.63 μm under a 200 V voltage excitation voltage of 0.2 Hz. This was 2.5 times that for a conventional electrode piezo disk with the same structure. The actuator demonstrated better displacement properties. The piezoelectric disk could be valuable in applications involving micro-nano devices.
The transfer function and the transfer coefficient of a precision electromagnetoelastic engine for nanobiomedical research are obtained. The structural diagram of an electromagnetoelastic engine has a difference in the visibility of energy conversion from Cady and Mason electrical equivalent circuits of a piezo vibrator. The structural diagram of an electromagnetoelastic engine is founded. The structural diagram of the piezo engine for nanobiomedical research is written. The transfer functions of the piezo engine or are obtained.
In this work, the parametric structural schematic diagrams of a multilayer electromagnetoelastic actuator and a multilayer piezoactuator for nanomechanics were determined in contrast to the electrical equivalent circuits of a piezotransmitter and piezoreceiver, the vibration piezomotor. The decision matrix equation of the equivalent quadripole of the multilayer electromagnetoelastic actuator was used. The structural-parametric model, the parametric structural schematic diagram, and the matrix transfer function of the multilayer electromagnetoelastic actuator for nanomechanics were obtained.
The generalized parametric structural schematic diagram, the generalized structural-parametric model, and the generalized matrix transfer function of an electromagnetoelastic actuator with output parameters displacements are determined by solving the wave equation with the Laplace transform, using the equation of the electromagnetolasticity in the general form, the boundary conditions on the loaded working surfaces of the actuator, and the strains along the coordinate axes. The parametric structural schematic diagram and the transfer functions of the electromagnetoelastic actuator are obtained for the calculation of the control systems for the nanomechanics. The structural-parametric model of the piezoactuator for the transverse, longitudinal, and shift piezoelectric effects are constructed. The dynamic and static characteristics of the piezoactuator with output parameter displacement are obtained.
The field of mechatronics using piezoelectric and electrostrictive materials is growing rapidly with applications in many areas, including MEMS, adaptive optics, and adaptive structures. Piezoelectric Actuators and Ultrasonic Motors provides in-depth coverage of the theoretical background of piezoelectric and electrostrictive actuators, practical materials, device designs, drive/control techniques, typical applications, and future trends in the field. Industry engineers and academic researchers in this field will find Piezoelectric Actuators and Ultrasonic Motors an invaluable source of pertinent scientific information, practical details, and references. In the classroom, this book may be used for graduate level courses on ceramic actuators.
Decision wave equation, structural - parametric model and block diagram of electro magneto elastic actuators are obtained, its transfer functions are bult. Effects of geometric and physical parameters of electro magneto elastic actuators and external load on its dynamic characteristics are determined. For calculation of communications systems with piezoactuators the block diagram and the transfer functions of piezoactuators are obtained.
The electroelastic actuator on the piezoelectric or electrostriction effects is applied in nanomechatronics, nanotechnology, nanoresearch, nanobiology and adaptive optics. In this work the Yakubovich criterion absolute stability of the nanomechatronics system with the condition on the derivative for the hysteresis nonlinearity of the electroelastic actuator is used. This criterion with the condition on the derivative is development of the Popov absolute stability criterion. The stationary set of the nanomechatronics system with the electroelastic actuator for the hysteresis deformation is the segment of the straight line. This segment has the points of the intersection of the hysteresis partial loops and the straight line. An absolute stability conditions on the derivative for the nanomechatronics systems with the piezo actuator at the longitudinal, transverse and shift piezoeffect are determined. The condition of an absolute stability on the derivative for the nanomechatronics system with the electroelastic actuator under random influences is obtained. For the Lyapunov stable csystem the Yakubovich absolute stability criterion has the simplest representation of the result of the investigation an absolute stability of nanomechatronics system.
This book presents new approaches to R&D of piezoelectric actuators and generators of different types based on established, original constructions and contemporary research into framework of theoretical, experimental, and numerical methods of physics, mechanics, and materials science. Improved technical solutions incorporated into the devices demonstrate high output values of voltage and power, allowing application of the goods in various areas of energy harvesting. The book is divided into seven chapters, each presenting main results of the chapter, along with a brief exposition of novel findings from around the world proving context for the author’s results. It presents particular results of the Soviet and Russian schools of Mechanics and Material Sciences not previously available outside of Russia.
We developed a structural-parametric models, obtained solution for the wave equation of electroelastic actuators and constructed their transfer functions. Effects of geometric and physical parameters of electroelastic actuators and external loading on their dynamic characteristics determined. For calculation of automatic control systems for nanometric movements with electroelastic actuators, we obtained the parametric structural schematic diagrams and the transfer functions of piezoactuators. Static and dynamic characteristics of piezoactuators determined.
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Multilayer engine for microsurgery and nano biomedicine
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