Showing papers on "Active vibration control published in 2020"
TL;DR: The research carried out in the past five years, in the areas of modeling, and optimal positioning of piezoelectric actuators/sensors, for active vibration control, are covered.
Abstract: Considering the number of applications, and the quantity of research conducted over the past few decades, it wouldn't be an overstatement to label the piezoelectric materials as the cream of the crop of the smart materials. Among the various smart materials, the piezoelectric materials have emerged as the most researched material for practical applications. They owe it to a few key factors like low cost, large frequency bandwidth of operation, availability in many forms, and the simplicity offered in handling and implementation. For piezoelectric materials, from an application standpoint, the area of active control of vibration, noise, and flow, stands, alongside energy harvesting, as the most researched field. Over the past three decades, several authors have used piezoelectric materials as sensors and actuators, to (i) actively control structural vibrations, noise and aeroelastic flutter, (ii) actively reduce buffeting, and (iii) regulate the separation of flows. These studies are spread over several engineering disciplines-starting from large space structures, to civil structures, to helicopters and airplanes, to computer hard disk drives. This review is an attempt to concise the progress made in all these fields by exclusively highlighting the application of the piezoelectric material. The research carried out in the past five years, in the areas of modeling, and optimal positioning of piezoelectric actuators/sensors, for active vibration control, are covered. Along with this, investigations into different control algorithms, for the piezoelectric based active vibration control, are also reviewed. Studies reporting the use of piezoelectric modal filtering and self sensing actuators, for active vibration control, are also surveyed. Additionally, research on semi-active vibration control techniques like the synchronized switched damping (on elements like resistor, inductor, voltage source, negative capacitor) has also been covered
93 citations
TL;DR: In this paper, an active control of nonlinear free vibration of viscoelastic orthotropic piezoelectric doubly-curved smart nanoshells with surface effects is studied.
56 citations
TL;DR: In this paper, the active vibration control and vibration characteristics of a sandwich thin cylindrical shell whose intermediate layer is made of the graphene reinforced composite that is bonded with integrated piezoelectric actuator and sensor layers at its outer and inner surfaces are investigated.
53 citations
TL;DR: In this article, the nonlinear primary resonance in the vibration control of a cable-stayed beam with time delay feedback was investigated. And the effect of control gain and time delay on the amplitude and frequency response behavior were investigated.
43 citations
TL;DR: A comprehensive review of shape memory alloy (SMA) reinforced polymer composites can be found in this paper, where the SMA-reinforced hybrid composites are found to be able to adapt their shape, which may also improve the specific strength, vibration damping, and self-healing capability by utilizing shape memory effect and pseudo-elastic behavior of SMA.
Abstract: Imparting controllable flexural rigidity into a material system is one of the key motivations for the design of intelligent materials for structural applications. In this direction, shape memory alloy (SMA) reinforced polymer composites have enormous potentials for active shape and vibration control of systems related to aerospace, automobile, and energy harvesting applications. The primary motivation of reinforcing SMA wires into a composite is to actively change the composite stiffness or elasticity through thermo-mechanical as well as electrical/magnetic stimulation. The SMA-reinforced hybrid composites are found to be able to adapt their shape, which may also improve the specific strength, vibration damping, and self-healing capability by utilizing shape memory effect and pseudoelastic behavior of the SMA. In this paper, we intend to provide a comprehensive review of all SMA-reinforced composites available today in the open literature and a critical assessment of the technology. Currently, shape memory alloys in the form of long fibers (wires), ribbons, short fibers, and particles are used for hybridizing the reinforcements in composites. Continuous SMA fiber embedded composites are generally used for shape control of structures. However, it has difficulty in obtaining suitable interfacial characteristics required for actuation. The discontinuous SMA embedded composites have scope for modifying such active properties. The work presented here gives an overview of the concepts of design, development, and modeling of continuous and discontinuous shape memory alloy embedded composites for advanced smart composites.
37 citations
TL;DR: In this article, active optimal vibration control of a micro-beam integrated with piezoelectric actuator and sensor based on modified couple stress and surface stress elasticity theories is investigated.
Abstract: In this study, active optimal vibration control of a micro-beam integrated with piezoelectric actuator and sensor based on modified couple stress and surface stress elasticity theories are investigated. The modified couple stress and surface stress elasticity theories are taken into account to consider the small-scale effects due to the high surface-to-volume ratio. The effects of the independent material length scale on the resonant vibration characteristics of the structure are analyzed. Furthermore, the effect of the simulation model based on modified couple stress of a closed-loop velocity feedback optimal controller on dynamic response time and piezoelectric control voltage were compared with those of the classical model. The results indicate that the small material length scale considering in the modified couple stress theory plays a key role in the dynamic respond and vibration control of micro-beam integrated with piezoelectric layers. In addition, the results illustrate that time respond to model increases and vibration amplitude decreases faster by using the modified couple stress theory.
34 citations
TL;DR: Results of experimental investigation indicate that the neural network based hysteresis compensation of PSA for active control of helicopter vibration can effectively reduce vibration of the scaled frame structure and can reduce more vibration than without compensation.
Abstract: Piezoelectric Stack Actuators (PSAs) have become promising actuators for active control of helicopter fuselage vibration owing to their large output force, rapid response speed, wide working frequency and light weight. However, the hysteresis nonlinearity of PSA has negative influence on the performance of PSA-driven active vibration control. In this paper, to improve the performance of PSA-driven active control of helicopter vibration, the hysteresis nonlinear neural network and hysteresis compensation neural network of PSA have been established based on the Nonlinear Auto Regression eXogenous (NARX) model. The PSA's voltage-displacement relations under two-harmonic actuations were used for training the neural networks of hysteresis nonlinearity and hysteresis compensation. Then the compensation neural network for PSA's hysteresis was integrated into an active control system for helicopter vibration. The results of experimental investigation performed on a scale model of a representative helicopter fuselage floor structure indicate that the neural network based hysteresis compensation of PSA for active control of helicopter vibration can effectively reduce vibration of the scaled frame structure and can reduce more vibration than without compensation.
33 citations
TL;DR: Numerical simulations reveal that the novel control law proposed in (ii) is the most efficient in terms of vibration response and control cost, and two novel control laws inspired by the mechanical models of a viscoelastic semi-solid are proposed.
27 citations
TL;DR: In this article, a two-noded laminated piezoelectric beam element is presented for the dynamic analysis and active vibration control of laminated composite beams with piezolaminated layers.
24 citations
TL;DR: This paper presents the development of an intelligent controller for vibration suppression of a horizontal flexible plate structure using hybrid Fuzzy–proportional–integral–derivative–artificial bee colony controller tuned by Ziegler–Nichols tuning rules and intelligent proportional–Integral–Derivative controllers tuned by artificial bee colony algorithm.
Abstract: © The Author(s) 2019. This paper presents the development of an intelligent controller for vibration suppression of a horizontal flexible plate structure using hybrid Fuzzy–proportional–integral–derivative controller tuned by Ziegler–Nichols tuning rules and intelligent proportional–integral–derivative controller tuned by artificial bee colony algorithm. Active vibration control technique was implemented during the development of the controllers. The vibration data obtained through experimental rig was used to model the system using system identification technique based on auto-regressive with exogenous input model. Next, the developed model was used in the development of an active vibration control for vibration suppression of the horizontal flexible plate system using proportional–integral–derivative controller. Two types of controllers were proposed in this paper which are the hybrid Fuzzy–proportional–integral–derivative controller and intelligent proportional–integral–derivative controller tuned by artificial bee colony algorithm. The performances of the developed controllers were assessed and validated. Proportional–integral–derivative–artificial bee colony controller achieved the highest attenuation for first mode of vibration with 47.54 dB attenuation as compared to Fuzzy–proportional–integral–derivative controller with 32.04 dB attenuation. The experimental work was then conducted for the best controller to confirm the result achieved in the simulation work.
20 citations
TL;DR: A scheme for distributed piezoelectric actuator layout-design to improve active vibration control performance of thin-walled smart structures and can achieve excellent performance in a wide range of load cases is proposed.
Abstract: This paper proposes a scheme for distributed piezoelectric actuator layout-design to improve active vibration control performance of thin-walled smart structures. The aim of the design is to maximize the energy transformation from actuator to structure so that better control performance will be achieved under a control strategy. The system performance index (SPI) is used to measure energy transformation. The layout-design problem is formulated by combining the topology optimization technique and the SPI. The pseudo-densities of piezoelectric materials are used as design variables and a penalty function is applied on piezoelectric materials so that a clear result can be obtained. Based on the chain rule and the adjoint method, and with the help of solving Lyapunov function, the sensitivity analysis is conducted. The optimization model is solved by nonlinear programming method. Once the optimized layout is obtained, the linear quadratic regulator (LQR) control strategy is applied and vibration suppression can be achieved. The method is load-independent. External loads and control strategy are not considered in layout-design so that a single layout can be obtained. Yet for all that, the optimized layout can achieve excellent performance in a wide range of load cases. Two numerical examples and two engineering applications demonstrate the validity of the proposed method.
TL;DR: In this paper, a flywheel inertial actuator is used to reduce flexural vibration of distributed structures, which can be used to implement feedback control units, which are robust to shocks, have enhanced stability properties and, thus, improved vibration control effects.
TL;DR: A new fractional-order robust model reference adaptive controller for the piezo-actuated active vibration isolation systems with a relative-degree-one model that speeds up the convergence of the closed-loop system, and simultaneously reduces the control effort compared with the traditional MRAC methods.
Abstract: Improving the control performance of active vibration isolation systems is crucial to provide an ultra-quiet environment for precision instruments. This paper presents a new fractional-order robust...
TL;DR: In this paper, the active vibration control of an FGM truncated conical shell, subjected to the harmonic excitation, is investigated via a semi-analytical method using piezoelectric smart materials, and frequency-amplitude functions are analyzed for the superharmonic and subharmonic resonances.
Abstract: In this study, active vibration control of an FGM truncated conical shell, subjected to the harmonic excitation, is investigated via a semi-analytical method. The governing equations of truncated conical shells in conjunction with piezoelectric layers are derived using Donnell shell theory and von Karman's non-linearity. Then, the dynamic equation of the system is discretized using Galerkin method to obtain the ordinary differential equation of system. Using the semi-analytical method by means of perturbation theory, the frequency response of superharmonic and sub-harmonic analysis of the system is performed. Then, using the piezoelectric smart materials, the active vibration control for the truncated conical shell is investigated and frequency-amplitude functions are analyzed for the superharmonic and subharmonic resonances. The results presents the influence of excitation amplitude and cone vertex angle on the frequency-amplitude response and in specific the effect of different control gain coefficients on the system's vibration behavior. Finally, the performance of active control strategy is investigated by means of the time response of system equipped with piezoelectric layers for different types of the FG distribution in thickness direction.
TL;DR: In this article, a polyvinylidene fluoride (PVDF) actuator was used to develop the active vibration control of a pre-tensioned Kapton membrane.
Abstract: In recent years, with the increasing use of membrane structures in space applications, the problems of large-amplitude (compared to the thickness) vibrations arise; leading to the degradation of their working performance. It is challenging to control the large-amplitude vibrations of membranes due to the high flexibility, low damping, and strong geometrical nonlinearity. In this study, polyvinylidene fluoride (PVDF) actuators are considered to develop the active vibration control of a pre-tensioned Kapton membrane. The governing equations are established based on the geometrically nonlinear theory of plates, taking into account the modal control force induced by the actuators. To analyze the nonlinear dynamic characteristics of the membrane, the theoretical and approximate solutions of nonlinear frequencies of the membrane are obtained, and the discrepancies between the two solutions under different vibration amplitudes are discussed. Control performance for both free vibration and harmonic forced vibration of the membrane is numerically studied. A comprehensive parametric study is carried out to investigate the influences of different system parameters, including the pretension and the size of the membrane, and the position and number of the actuators, on the control performance. Analytical results indicate that the vibration of the membrane can be effectively suppressed with the appropriately laminated PVDF actuators. The results of this research can be extended to the active control of different gossamer space structures.
TL;DR: The proposed method introduces less off-line computation burden, and provides a convenient method in regulating the actuator saturations and specifying the sensor locations, and by the proposed method, the bounded stability of the overall buildings can be achieved.
TL;DR: In this article, the damping behavior of thin constrained composite plates with double piezoelectric layers is analyzed by using Fourier transformation and classical laminated plate theory, showing that active control has the best suppression performance of vibrations.
TL;DR: In this paper, the authors apply active vibration control to reduce the vibration of a rotor bearing system using flexible piezoelecope and apply it to a rotational machine.
Abstract: Rotor vibration control is crucial for the reliability of rotating machines. This article applies active vibration control to reduce the vibration of a rotor bearing system using flexible piezoelec...
TL;DR: A mixed H 2 / H ∞ controller is designed considering both control performance and robust stability and the effectiveness of the proposed method is validated experimentally and the robustness of the controller is demonstrated by applying the same controller to various structures.
Abstract: The purpose of this study is to develop a simple and practical controller design method without modeling controlled objects. In this technique, modeling of the controlled object is not necessary an...
TL;DR: This study attempts to alleviate numerically both the rotor and airframe vibrations of a lift-offset compound helicopter using two different active vibration control techniques.
TL;DR: Simulation results show that in steady-state conditions, by applying the active damping algorithm, over 60% of the fluctuation torque in driveline shafts is reduced at different velocities and driving modes, demonstrating that the proposed strategy is effective.
TL;DR: In this article, active vibration control of a piezo laminated smart structure using poling tuned piezoelectric material is presented, which improves the performance of existing materials and utilize t...
Abstract: In this article, active vibration control of a piezo laminated smart structure is presented using poling tuned piezoelectric material. To improve the performance of existing materials and utilize t...
TL;DR: The paper will review the basic algorithms and various extensions trying to emphasise the advantages of using Youla–Kucera parametrisation in adaptive active vibration control and adaptive active noise control.
Abstract: Youla–Kucera parametrisation plays a very important role in adaptive active vibration control and adaptive active noise control. This concerns both vibration and noise attenuation by feedba...
TL;DR: In this article, a Linear Quadratic Regulator (LQR) controller for the active vibration control of a smart flexible cantilever beam was designed on the basis of the Euler-Bernoulli beam theory and the piezoelectric theory.
Abstract: The aim of this study is to design a Linear Quadratic Regulator (LQR) controller for the active vibration control of a smart flexible cantilever beam. The mathematical model of the smart beam was created on the basis of the Euler-Bernoulli beam theory and the piezoelectric theory. State-space and finite element models used in the LQR controller design were developed. In the finite element model of the smart beam containing piezoelectric sensors and actuators, the beam was divided into ten finite elements. Each element had two nodes and two degrees of freedom were defined for each node, transverse displacement, and rotation. Two Piezoelectric ceramic lead Zirconate Titanate (PZT) patches were affixed to the upper and lower surfaces of the beam element as pairs of sensors and actuators. The location of the piezoelectric sensor and actuator pair changed and they were consecutively placed on the fixed part, the middle part, and the free end of the beam. In each case, the design of the LQR controller was made considering the first three dominant vibratory modes of the beam. The effect of the position of the sensor-actuator pair on the beam on the vibration damping capability of the controller was investigated. The best damping performance was found when the sensor-actuator pair was placed at the fixed end.
01 Jan 2020
TL;DR: In this paper, a hybrid proportional electromagnetic dynamic vibration absorber consisting of an electromagnetic actuator and an elastic element was proposed for control of engine vibration during idling, which was tested on a single engine.
Abstract: A hybrid proportional electromagnetic dynamic vibration absorber consisting of an electromagnetic actuator and an elastic element is proposed for control of engine vibration during idling. The desi...
TL;DR: This paper focuses on the biodynamic model of the driver and seat for the first step needed in the design of the seating suspension system, and illustrates the different types of the system vibration controls and their performance evaluation methods.
Abstract: Drivers of heavy trucks are exposed to large amounts of vibration which can lead to serious health risks. Many suspension systems/methods can be used to isolate these transmitted vibrations, such as vehicle suspension systems, cabin suspension systems and seating suspension systems. The central idea of the work is to identify the research gaps and raise our future research questions in this specific area. The novelty of this paper is proposing a model predictive controller for active vibration control of seating suspension systems. A systematic literature review of the existing work of the vibration control of seating suspension systems has been conducted. Various control techniques that are used in the seating suspension systems have been summarized and evaluated. This paper focusses on the biodynamic model of the driver and seat for the first step needed in the design of the seating suspension system. Then, it illustrates the different types of the system vibration controls and their performance evaluation methods. At the end, the paper details several active seating suspension systems including their actuation system structures and control algorithms which are used in the heavy vehicle trucks.
TL;DR: In this paper, multilayered sandwich structures have been extensively studied in the engineering field, especially on their dynamic analysis or dynamic analysis of their dynamic properties, and the dynamic analysis has rarely been concerned.
Abstract: Although single-layer sandwich materials have been extensively studied in the engineering field, multilayered sandwich structures have rarely been concerned, especially on their dynamic analysis or...
TL;DR: This paper presents a technique to design the positive position feedback controller with the optimal damping, and the technique is demonstrated on a single degree-of-freedom system.
Abstract: Positive position feedback is an attractive control law for the control of plants having no high frequency roll-off. The tuning of the parameters of the positive position feedback to obtain the des...
TL;DR: An active vibration control approach to solve the vibration suppression problem of flexible space structures in the presence of external disturbances and parameter uncertainties is proposed through a neural network based state observer designed for the estimation of the modal velocity.
Abstract: This paper proposes an active vibration control approach to solve the vibration suppression problem of flexible space structures in the presence of external disturbances and parameter uncertainties. Based on the independent modal space control method, each mode can be decoupled and controlled separately. To meet the case that the velocity sensors are not available on the flexible structures, a neural network based state observer is designed for the estimation of the modal velocity. The neural network approximation is introduced into the observer design which can effectively deal with the disturbances and uncertainties in order to obtain more accurate observation results. Further, the controller and the adaptive law are derived by using the backstepping technique and prescribed performance control method with the stability of the whole closed-loop system analyzed via Lyapunov theory. Simulation results illustrate the effectiveness and vibration control performance of the proposed method.