Modeling of Piezoceramic Actuators for Control, 6. Books > The motion cycle of the rotary actuator involves the following steps where the common symmetric signal-square wave is selected to simplify analysis. Coupling tests of the two motion axes were performed by using sinusoidal signals with frequency of 200Hz and amplitude of 120V. The results are shown in Figure 7(e) that the coupling ratios between two motion axes are within 5%. 88, Taylor & Francis, Abingdon, UK, 2015. WebAmong them, the stick-slip piezoelectric actuators are favored by researchers due to their simple structure [19,20], low manufacturing and assembly requirements [21,22], easy control [23,24], and high positioning resolution [25,26]. There are no steady errors. The motion cycle of the rotary actuator involves the following steps where the common symmetric signal-square wave is selected to simplify analysis. (c) Motion stroke. Applying a high voltage current into this system causes the (d) Motion tracking for Z-axis and parasitic motion for Y-axis. A signal-control actuator uses an excitation signal having an asymmetric waveform to generate unequal speed in two directions. Figure 6(b) shows evident stick-slip motion. 25, no. Enter words / phrases / DOI / ISBN / authors / keywords / etc. WebA piezoelectric actuator produces displacement and force by the inverse piezoelectric effect. 9, no. Abdel Ghani Aissaoui, Authored by For non-resonant type EVC vibrator, usually consists of piezoelectric actuators and a compliant mechanism with deliberate design. J. Y. Peng and X. According the motion principles, piezoelectric actuators could be separated into direct-push type, ultrasonic type, inchworm type and stick-slip type [14, 15]. Therefore, this chapter mainly focuses on the non-resonant type EVC vibrator, aiming to review the working principle of piezoelectric tool actuator, compliant mechanism design, static modeling, kinematic and dynamic modeling, structure optimization and offline testing. The natural frequency for each direction is around 3.7kHz due to the identical chain. Energy Harvesting Prediction from Piezoelectric Materials with a Dynamic System Model, 7. 40, pp. Impacts on multi-layer piezoelectric actuator when coupled with mechanical elements, M. Salim, D. Salim, D. Chandran, H. S. Aljibori, and A. Sh Kherbeet, , Review of nano piezoelectric devices in biomedicine applications, Vibration suppression of boring bar by piezoelectric actuators and LR circuit, Full color natural light holographic camera, An adaptive resonance regulator design for motion control of intake valves in camless engine systems, B. Sauvet, T. Lalibert, and C. Gosselin, , Design, analysis and experimental validation of an ungrounded haptic interface using a piezoelectric actuator, Stickslip and slipslip operation of piezoelectric inertia drives. To this end, two mounting slots with high flexibility are specially designed for improving output displacement. The rhombic mechanism contains a friction block that is in contact with the bearings outer ring and a fixing hole that is used to fix the mechanism on the surface of the base. And this chapter reviews some typical examples according to the different types of EVC, including the mechanical structure, working principle of piezoelectric actuator, the static modeling, kinematic and dynamic modeling, structure optimization and testing. The amplitude-frequency responses are shown in Figure 3(c). The duty cycle of the sawtooth wave is much lower than 90%, in contrast with the value of 100% symmetry under ideal conditions, resulting in a smaller displacement of slip motion. Illustration of 3D model, experimental setup and testing results. J. Li, H. Zhao, H. Qu et al., A piezoelectric-driven rotary actuator by means of inchworm motion, Sensors and Actuators A: Physical, vol. 61796188, 2019. WebInside the actuator system, a piezoelectric material sits between a metal plate and an actuator device. This kind of actuators is generally consisted of two sections, the stator and the Each limb has two bi-axial right circular flexure hinges. It consists of one fixture base, one compliant mechanism, four piezoelectric actuators and capacity sensors. This is because a higher applied voltage results in larger displacement in the stick stage and thus higher angular velocity. To improve the manufacturing quality, tool life and machining efficiency, let the machining cost down, elliptical vibration-assisted machining (EVAM) was proposed. (d) Frequency response. In this system, a metal plate and an actuator device (b) Amplitude-frequency responses. 61, no. A novel three-degree-of-freedom piezoelectric actuator, which is driven by two pairs of piezo-stack actuator with spatial compliant mechanisms designed to guide the motion and preload the piezo-stack actuators, is herein proposed. The maximum parasitic motion (about 3.8%) was generated along z axial direction when driving the piezoelectric actuator along x axial direction. The micro-nano motion resulting from elastic deformation of flexure hinge can guarantee the modulation ability and accuracy, which makes it more suitable for the manufacturing of micro-nano structured surfaces. Therefore, this chapter mainly reviews the recent developments and achievements on flexure-based EVC vibrators actuated by piezoelectric actuators. For further information on how we protect and (e) Experimental results of kinematic performance. The EVC method is first proposed based on a 2D type EVC vibrator. FEA simulation was also used to study the static and dynamic characteristics. High keeping suspension. Comparisons results of analytical modeling and FEA method. WebThe working principle of the proposed actuator is similar to the opening and closing actions of the three-petal mouth of a rabbit, which is analyzed by the finite element An, J. W. Li, and W. J. Zhang, Piezoelectric friction-inertia actuator-a critical review and future perspective, The International Journal of Advanced Manufacturing Technology, vol. 285293, 2016. The prototype of the proposed actuator worked well when only one piezoelectric stack was installed. Liu, A low-frequency structure-control-type inertial actuator using miniaturized bimorph piezoelectric vibrators, IEEE Transactions on Industrial Electronics, vol. K. Uchino, Phase Transitions, vol. Therefore, the research on 2D type EVC vibrator is relatively early and extensive. Basic knowlede of Piezoelectric Actuators. The measured tool locus are in accordance with the simulated locus shown in Figure 12(d). The Asymmetric Flexure Hinge Structures and the Hybrid Excitation Methods for Piezoelectric Stick-Slip Actuators, 5. For one compliant chain, the double parallelogram mechanism with eight right circular flexure hinges and a spatial transition mechanism with four sets of parallelogram limbs were adopted. It can be found from Figure 6(c) that the resolution in Z direction and Y direction are all within 8nm. The piezo actuator can be built as a stack of piezo elements but is more commonly constructed as a cantilevered bender, which offers more displacement but less force (Figure 4). This means that in the quick contraction stage, when the applied voltage decreases rapidly, the friction block slips on the bearings outer ring, which remains still. 1, p. 7, 2017. Programmable Piezo Shims . Offline testing results. Finally, a summary is concluded and the future development perspectives of these non-resonant type piezoelectric actuators are discussed. The designed mechanism is actually arc-shaped mechanism. UNITED KINGDOM, Introduction to the different types of EVC, Development of the non-resonant type EVC vibrator. 78, no. A piezoelectric transducer is based on the principle of the piezoelectric effect. Licensee IntechOpen. To evaluate the stroke and parasitic motions, a maximum sinusoid driving voltage (u=[50+50sin(2t)] V) was separately applied to each piezoelectric actuator. This article proposes an inertial piezoelectric actuator with hybrid design of asymmetrically clamping structures and a bias unit for the achievement of large angular velocity and Design and testing of a novel piezoelectric micro-motor actuated by asymmetrical inertial impact driving principle. (c) 3D model of the EVC vibrator. Gu, L.-M. Zhu, and C.-Y. As the applied voltage increases, the angular velocity increases regardless of the frequency of the applied voltage. With the rapid growth of science and technology, precision components are increasingly in demand in various fields such as aerospace, biomedical engineering, optics, surface engineering and energy. The amplitude-frequency responses and phase-frequency responses are shown in Figure 7(d). It can be seen that the practical stroke can reach 11.067m, 10.100m, and 12.254m along the x, y, and z axes directions, respectively. Piezoelectric Actuators, Submitted: February 4th, 2022 Reviewed: February 21st, 2022 Published: March 21st, 2022, Total Chapter Downloads on intechopen.com. (c) Results of motion stroke. (1)Initial state: when time , no voltage is applied, the piezoelectric stack is not deformed, and there is no movement between the friction block and bearing. Its based on principles of collaboration, unobstructed discovery, and, most importantly, scientific progression. A piezoelectric actuator is an electrically controlled positioning element that functions based on the piezoelectric effect. Figure 12 presents displacement data obtained directly from the laser sensor when the actuator installed with only one piezoelectric stack was driven by a sawtooth wave signal having a voltage of 93V and symmetry of 100% and different frequencies. Working Principle The basic idea is to squeeze a rod of Terfenol-D into a metal tube whose bore size is just slightly smaller than the rod's diameter, wrap a series of electromagnetic induction coils around the tube (or stator), and use the coils to generate a moving magnetic field that courses wavelike down the successive windings along the It should be noted that the noise during cutting is slightly larger than that in offline testing. Then a prototype was manufactured and the performance tests were conducted through the experimental setup which is shown in Figure 10(b). 194, pp. The actuator rotates step by step to realize an unlimited stroke through stick-slip motion. When actuated the piezoelectric actuators along with y and z axial directions, the parasitic motion along the other two directions are almost the same, which are about 1.37% and 2.51% of the corresponding actuation motions. Huang H and Morita T 2019 Review-Stepping piezoelectric actuators with The actuator rotates clockwise if we change the applied voltage such that it first increases rapidly and then decreases slowly. patch and sandwich. (a) 3D model of the developed EVC vibrator. 6066, 2018. Here are some typical examples following below. Advances in Micro/Nano Electromechanical Systems and Fabrication Advances in Micro/Nano Electromechanical Systems and Fabrication Technologies, Applications, Control and Fault Diagnostics, Modelling and Control of Switched Reluctance Machines, Optimization and Control of Electrical Machines, Materials Science, Engineering and Technology, Frontiers in Guided Wave Optics and Optoelectronics, 1. The structure and working principle of the proposed actuator are illustrated and its View on PubMed (b) Influence of decoupling angle on the elliptical parameters and relative ratio. By continuing you agree to the use of cookies. Axes were performed by using sinusoidal signals with frequency of 200Hz and amplitude of 120V information! You agree to the different types of EVC, development of the motion... 6 ( c ) 3D model of the applied voltage direction is around 3.7kHz due the... To simplify analysis the applied voltage results in larger displacement in the stick and... 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