Intelligent controller design for nonlinear piezoelectric. Dynamic characteristics of inertial actuator featuring. The used piezoceramic materials y show nonlinearity and hysteresis. All these effects can be controlled by proper electronics.
Publications intelligent structures and systems laboratory. Piezo ceramic fibers are available in diameters of 105m, 250m and 800m and different pzt materials. The forcedeflection behavior of functionally graded piezoceramic actuators paul w. Yoon, hwansik, hysteresisreduced dynamic displacement control of piezoceramic stack actuators using model predictive sliding mode control, smart materials and structures, vol. Institute of physics publishing smart materials and structures smart mater. In general, the smart structures featuring surfacebonded or embedded piezoelectric actuators andor sensors are primarily applied to vibration and position control of fl exible structural systems. Halloran university of michigan, ann arbor, michigan, 48109 functionally graded piezoceramics fgp overcome the current reliability limitations. This paper introduces a class of recently developed piezoceramic pma and its application to reduce. Miniature piezoceramic actuators with improved fatigue resistance.
Embedded piezoelectric sensors and actuators for control. Hackenberger3 1national institute of aerospace, 144 research drive, hampton, va 23666, usa 2nasa langley research center, hampton, va 23681, usa 3trs technologies, inc. Piezoelectric element, rotating inertial actuator, fxlms, active structural acoustic control summary. This paper introduces a class of recently developed piezoceramic pma and its application to reduce vibration and structure borne noise. Smart material is utilizing a textile spinning method to manufacture green pzt fibers. Design of a piezoelectric sensor and its analog interface for flaw detection hamza boukabache, 1, 2, christophe escriba, 2, 3 and jeanyves fourniols 2, 3 1 eca group, aerospace division, 5 rue paul mesple, toulouse 31100, france. Piezoceramic article about piezoceramic by the free dictionary. In this paper, two piezobased rotating inertial actuators pbrias are considered for the suppression of the structureborne noise radiated from gearbox systems. Piezoceramic displacement piezotechnics piezo stack actuators. These three structures provide some feasible designs for microseconds and actuators that eventually perform the desired task in most of smart structures.
Design and test of a piezoelectric inertial mass actuator for. Lamb waves in structures can be generated with more less efficiency using different techniques such as wedge coupled angle ultrasonic probes, comb ultrasonic transducers or interdigited electrode array transducers. They showed the feasibility of the application of the smart structures in the suppression of vibrations due to the gust loading on the. Sodano h a, lloyd j and inman d j 2006 an experimental comparison between several active composite actuators for power generation smart mater. In addition to the typical advantages of piezoelectric motors, they are especially suited for miniaturisation due to their simple structure and inherent finepositioning capability.
Piezoceramic article about piezoceramic by the free. Recent advances in smart materials have led to the development of advanced actuators using. Asm10 proceedings of the 4th international conference on applied mathematics, simulation, modelling pages 5760 corfu island, greece july 22 25, 2010. In the field of smart structures, piezoelectric sensors actuators and fibre optic sensors are widely know and their technology readiness allow to test their capabilities in many applications 1,3,4,9. The contribution of this paper lies in the generalization of various published including patented. Analysis of smart structures with different shapes of. Halloran university of michigan, ann arbor, michigan, 48109 functionally graded piezoceramics fgp overcome the current reliability limitations within laminated piezoceramic actuators by eliminating the bond lines and stress. Modelling and characterization of a piezoceramic inertial. A ceramic, such as lead zirconate titanate, that converts an electrical field to a mechanical strain or a mechanical strain to an electrical charge. Design and test of a piezoelectric inertial mass actuator. Abstract piezoelectric ceramics are desirable actuator materials for many biomedical applications due to their ability to generate precise, controlled motion with applied voltage. A very important component of any active vibration absorber is the actuator unit.
Inertial piezoceramic actuators for smart structures inertial piezoceramic actuators for smart structures asckler, craig. Physik instrument, represented by warsash scientific, has released the picastack series of piezoceramic linear actuators the actuators come in a variety of load ranges from 100n to 100,000n and can generate forces of up to 80,000 n. Thus, numerous studies have been performed on the experimental system identification of smart structures. Since those actuators integrate both stiffness and force generation into one element, this enables more compact and mechanically robust. Lloyd j and inman d j 2006 an experimental comparison between several active composite actuators for power generation smart mater. Introduction although the field of smart materials and smart systems is of increasing importance to many sectors of society, there is still no internationally acceptable definition of what is meant by the term smart when used in this context. Largesignal curves as a function of the electric field strength e a electromechanical behavior of the longitudinal strain s b dielectric behavior of the polarization p. The pa will contract back to the initial position in a very short time.
Modern inertial sensors and systems paperback october 30, 2008 by puri bose author see all formats and editions hide other formats and editions. Design of passive piezoelectric damping for space structures. Owing to the fielddependent dynamic flexural rigidity of mrebased structures, power actuators utilizing such structures exhibit the capability of compensating the change of the loads and keeping the resonant frequency at a fixed value. Koko 2004 and used finite element model analysis for control. In this paper, the intelligent fuzzy pid controller is designed in the matlabsimulink environment. They have also been used as actuation components in wave control experiments by pines and yon flotow 17. Smart material gmbh was founded shortly after in july 2002 in dresden, germany. Actuators free fulltext piezoelectric inertia motors. Our team serves a wide range of market segments in the industrial, defense, and aerospace sectors.
Piezoelectric inertia motorsalso known as stickslip motors or smooth impact drivesuse the inertia of a body to drive it in small steps by means of an uninterrupted friction contact. Detecting mechanical impedance of structures using the sensing capability of a piezoceramic inertial actuator. Active structural acoustic control of gearbox systems using. A smart civil structure integrates smart materials, sensors, actuators, signal processors, communication networks, power sources, diagonal strategies, control strategies, repair strategies, and lifecycle management strategies. Smart materials, precision sensorsactuators, smart. Active structural acoustic control of gearbox systems. This smart beam setup is comprised of actuators and sensors placed at the root of a cantilever beam. Inertial piezoceramic actuators for smart structures. Recent progress in piezoelectric materials for distributed actuators and sensors has triggered a considerable interest in smart structures. Actuators and sensors are widely used in various applications and are generally integrated with main structures via surface bonding or embedding.
In smart structures, piezoceramics are used as sensors, actuators, or both, for vibration suppression. Among these, the piezoelectric material is the most promising candidate since it features fast response time and easy controllability. Thus, those actuators can also be used for retrofitting of existing structures or for prototyping purposes. An inertial actuator, also known as a proof mass actuator pma, applies structural forces by reacting against an inertial mass. Interfacial normal and shear stresses for both plane stress and plane strain deformations were calculated to evaluate the actuation effects. Typical applications include optics, smart structures, precision machining, valve control, nanopositioning and nanotechnology. The element is based on eulerbernoulli theory and it assumes bilinear distribution of. S0964172699026397 shape control of a beam using piezoelectric actuators brij n agrawal and kirk e treanor naval postgraduate school, spacecraft research and design center, monterey, ca 93943, usa received 22 may 1998, in.
Since the piezoceramic inertial actuator is a linear power transducer without internal energy generation, the relationship between the electrical voltage and current at its input port and the mechanical force and velocity at its output port can be described by a 2. Pzt, a piezoceramic, is commonly used for actuation because it has a maximum actuation strain is microstrain. Actuators free fulltext piezoelectric inertia motorsa. In the field of smart structures, piezoelectric sensorsactuators and fibre optic sensors are widely know and their technology readiness allow to test their capabilities in many applications 1,3,4,9. Piezoceramic components pi ceramic manufactures a wide range of piezoceramic components in various shapes and sizes according to your needs also with contacting or in miniature format. Proceedings of the smart structures and materials 1995 industrial and commercial applications of smart structures technologies conference, spie, vol. Smart structures consist of highly distributed active devices and processor networks.
The element is based on eulerbernoulli theory and it assumes bilinear distribution of electric. This includes piezoceramic components and elements as well as piezoelectric actuators. One dimensional beam element suitable for the analysis of structures with applied piezoelectric sensors and actuators, i. Miniature piezoceramic actuators with improved fatigue. Modal analysis of beam with piezoelectric sensors a actuators. Displacement of ferroelectric piezo ceramics with different control amplitudes parallel to the direction of polarization. Optimal vibration control of beam using piezoceramic. A piezoelectric actuator using a lever mechanism is designed, fabricated, and tested with the aim of accomplishing longtravel precision linear driving based on the stickslip principle. The proposed control scheme was implemented in matlab. Vibration control of cantilever smart beam by using. When building the beam, it is taken into consideration that.
The stator design, comprising a piezoelectric stack and a lever mechanism with a. Smart material corporation, with its affiliated company smart material gmbh, is a developer and manufacturer of advanced piezo composite materials and systems based on these materials piezo composite materials belong to the group of new materials or smart materials. Jul 26, 2002 this paper provides a theoretical analysis of the elastic wave propagation in an elastic medium induced by embedded piezoceramic actuators under dynamic electric loads. Davis, inertial piezoceramic actuators for smart structures, proceedings of the 1995 north american conference on smart structures and materials spie proceedings 2447 san diego, ca, 26 february3 march 1995. Embedded piezoelectric sensors and actuators for control of. Smart structures based on thin piezoceramic plates. Crompton t r 1995 battery reference book vol abn0259 2nd edn. In this paper, a design for an inertial mass actuator utilizing piezoceramic actuators is studied. In smart structures, piezoceramics are used as sensors, actuators, or both, for vibration suppression applications. Also, time and temperature dependent effects are present. Although preferred for their high precision, these techniques are however very local and quite difficult to scale. Smart structure incorporating integrated piezoelectric. Therefore, the end effector sticks on the stage and moves forward, together with the stage, the distance s. Smart material is manufacturing piezo ceramic fibers for customers who are interested in building their own actuators and sensors.
In this paper, a design for an inertial mass actuator utilizing piezoceramic actuators. In fact, the area of smart structures and structronics started with the distributed piezoelectric sensing and control research in the early 1980s. The forcedeflection behavior of functionally graded. Modelling and characterization of a piezoceramic inertial actuator article in journal of sound and vibration 2611. Inertial mass ma structure ka ut ca figure 1 pcb series 712 pzt inertial actuator left, schematic of operation middle, and a simple sdof mathematical model right. It informs readers of the technical challenges to the commercialisation of products incorporating these material technologies. The proposed actuator mainly consists of a stator, an adjustment mechanism, a preload mechanism, a base, and a linear guide.
Summary in this paper thin monolithic piezoceramic wafers are used as structural actuators and sensors. Smart material corporation was founded in sarasota, florida in 2000. Using the finite element code a design method was developed for smart structures by s. Smart structure incorporating integrated piezoelectric sensors and actuators have a wide application in the fields of active vibration control, shape control and noise reduction, etc. Smart materials and structures an active structure consists of a structure provided with a set of actuators and sensors coupled by a controller. Shape control of a beam using piezoelectric actuators. Smart material is selling its products and services worldwide. Nonlinear characteristic hinder the effective use of piezoelectric smart materials in sensors and actuators. This paper provides a theoretical analysis of the elastic wave propagation in an elastic medium induced by embedded piezoceramic actuators under dynamic electric loads. The stator design, comprising a piezoelectric stack and a lever. Wave propagation induced by multiple piezoelectric actuators. Recently, smart material actuators such as piezoelectric material, shape memory alloy and electrorheological fluid are widely used for effective vibration control of flexible structures. A new actuator model involving the deformation in both the transverse and longitudinal directions of the actuators is used to study the wave propagation induced by multiple. R eal piezoelectric actuators exhibit divergent behaviour from pure linear constitutive equations.
Piezo composite materials manufactured by smart material corp. Therefore, a smart structure has four major components. The load capability of piezoelectric single crystal actuators tianbing xu1, ji su2, xiaoning jiang3, paul w. Significant differences between mechanical and thermal properties of the ceramic plates as we. Functional principle of inertial actuators with moving magnet for active vibration damping the actuators with inertial mass are based on the principle that the acceleration of the suspended mass lead to a reaction force on the supporting structure. For a given application, it may be necessary to have integrated mems employing one or more of the basic structure. This paper presents the analytical and experimental results on optimal placement of piezoceramic actuators for shape control of beam structures. It should function optimally and safely in its environment and maintain structural integrity during strong winds, severe earthquakes, and other extreme. The high strengthtoweight ratio makes fiber reinforced laminated composite materials attractive for many structure applications. S09641726047735 vibratio ncontrol in a composite box beam with piezoelectric actuators mira mitra, s gopalakrishnan1 and m seetharama bhat department of aerospace engineering,indian institute of science, bangalore 560012, india. Experimental and theoretical system identification of. Aug 15, 2014 thus, those actuators can also be used for retrofitting of existing structures or for prototyping purposes.
Energy transducers with piezoelectric pzt ceramics pzt. Detecting mechanical impedance of structures using the. The contribution of this paper lies in the generalization of various published including patented fias into a. Washington g and danak a 2005 modeling, optimization, and design of efficient initially curved piezoceramic unimorphs for energy. Wave propagation induced by multiple piezoelectric. The load capability of piezoelectric single crystal actuators.
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