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Journal articles on the topic 'Sensors and actuators'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Lee, C. K., and F. C. Moon. "Modal Sensors/Actuators." Journal of Applied Mechanics 57, no. 2 (1990): 434–41. http://dx.doi.org/10.1115/1.2892008.

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A piezoelectric laminate theory that uses the piezoelectric phenomenon to effect distributed control and sensing of structural vibration of a flexible plate has been used to develop a class of distributed sensor/actuators, that of modal sensors/actuators. The one-dimensional modal sensors/actuator equations are first derived theoretically and then examined experimentally. These modal equations indicate that distributed piezoelectric sensors/actuators can be adopted to measure/excite specific modes of one-dimensional plates and beams. If constructed correctly, actuator/observer spillover will n

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2

Norris, G. A., and R. E. Skelton. "Selection of Dynamic Sensors and Actuators in the Control of Linear Systems." Journal of Dynamic Systems, Measurement, and Control 111, no. 3 (1989): 389–97. http://dx.doi.org/10.1115/1.3153066.

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This paper selects sensors and actuators (location, type, and number) from an admissible set. We seek an approximate solution to this integer programming problem. Given the optimal use of the entire admissible set of sensors and actuators, it is possible to decompose the quadratic cost function into contributions from each stochastic input and each weighted output. In the past, these suboptimal cost decomposition methods of sensor and actuator selection have been used to locate perfect (infinite bandwidth) sensors and actuators on large scale systems. This paper extends these ideas to the more

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3

Mitterer, Tobias, Christian Lederer, and Hubert Zangl. "Enabling Modular Robotics with Secure Transducer Identification Based on Extended IEEE 21450 Transducer Electronic Datasheets." Sensors 23, no. 5 (2023): 2873. http://dx.doi.org/10.3390/s23052873.

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In robotics, there are many different sensors and actuators mounted onto a robot which may also, in the case of modular robotics, be interchanged during operation. During development of new sensors or actuators, prototypes may also be mounted onto a robot to test functionality, where the new prototypes often have to be integrated manually into the robot environment. Proper, fast and secure identification of new sensor or actuator modules for the robot thus becomes important. In this work, a workflow to add new sensors or actuators to an existing robot environment while establishing trust in an

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4

Wu, Jinxing, Tielin Li, Rong Yan, and Hong Li. "Calibration technique for airborne vibration sensors based on actuators." Journal of Physics: Conference Series 2741, no. 1 (2024): 012029. http://dx.doi.org/10.1088/1742-6596/2741/1/012029.

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Abstract Addressing the challenge of in-situ calibration for onboard vibration sensors in aircraft installations, we propose an online calibration method based on actuators. Leveraging the inverse piezoelectric effect, we employ piezoelectric actuators mounted on the vibration sensors to calibrate vibration signals. Experimental results demonstrate that the influence of the actuator on the energy transfer of the measured sensor’s vibration signal during the calibration process can be negligible, meeting the calibration accuracy requirements of onboard vibration sensors. Through validation expe

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5

Shu, Jing, Junming Wang, Kenneth Chik-Chi Cheng, Ling-Fung Yeung, Zheng Li, and Raymond Kai-yu Tong. "An End-to-End Dynamic Posture Perception Method for Soft Actuators Based on Distributed Thin Flexible Porous Piezoresistive Sensors." Sensors 23, no. 13 (2023): 6189. http://dx.doi.org/10.3390/s23136189.

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This paper proposes a method for accurate 3D posture sensing of the soft actuators, which could be applied to the closed-loop control of soft robots. To achieve this, the method employs an array of miniaturized sponge resistive materials along the soft actuator, which uses long short-term memory (LSTM) neural networks to solve the end-to-end 3D posture for the soft actuators. The method takes into account the hysteresis of the soft robot and non-linear sensing signals from the flexible bending sensors. The proposed approach uses a flexible bending sensor made from a thin layer of conductive sp

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6

Schneider, J., A. Klein, C. Mannweiler, and H. D. Schotten. "An efficient architecture for the integration of sensor and actuator networks into the future internet." Advances in Radio Science 9 (August 1, 2011): 231–35. http://dx.doi.org/10.5194/ars-9-231-2011.

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Abstract. In the future, sensors will enable a large variety of new services in different domains. Important application areas are service adaptations in fixed and mobile environments, ambient assisted living, home automation, traffic management, as well as management of smart grids. All these applications will share a common property, the usage of networked sensors and actuators. To ensure an efficient deployment of such sensor-actuator networks, concepts and frameworks for managing and distributing sensor data as well as for triggering actuators need to be developed. In this paper, we presen

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Kawano, Yuta, Koichi Kobayashi, and Yuh Yamashita. "Linear Matrix Inequality-Based Design of Structured Sparse Feedback Controllers for Sensor and Actuator Networks." Algorithms 17, no. 12 (2024): 590. https://doi.org/10.3390/a17120590.

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A sensor and actuator network (SAN) is a control system where many sensors and actuators are connected through a communication network. In a SAN with redundant sensors and actuators, it is important to consider choosing sensors and actuators used in control design. Depending on applications, it is also important to consider not only the choice of sensors/actuators but also that of communication channels in which some sensors/actuators are connected. In this paper, based on a linear matrix inequality (LMI) technique, we propose a design method for structured sparse feedback controllers. An LMI

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Mersch, Johannes, Najmeh Keshtkar, Henriette Grellmann, et al. "Integrated Temperature and Position Sensors in a Shape-Memory Driven Soft Actuator for Closed-Loop Control." Materials 15, no. 2 (2022): 520. http://dx.doi.org/10.3390/ma15020520.

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Soft actuators are a promising option for the advancing fields of human-machine interaction and dexterous robots in complex environments. Shape memory alloy wire actuators can be integrated into fiber rubber composites for highly deformable structures. For autonomous, closed-loop control of such systems, additional integrated sensors are necessary. In this work, a soft actuator is presented that incorporates fiber-based actuators and sensors to monitor both deformation and temperature. The soft actuator showed considerable deformation around two solid body joints, which was then compared to th

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9

Mohammad, Waseem. "DIAGNOSIS OF ACTIVE MAGNETIC BEARING SYSTEM FAULTS USING PRINCIPAL COMPONENT ANALYSIS." International Journal of Advances in Engineering & Scientific Research 2, no. 1 (2015): 36–42. https://doi.org/10.5281/zenodo.10725506.

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<strong>ABSTRACT</strong> <strong> </strong> <em>Active Magnetic Bearings (AMBs) endure rotating member without any frictional loss. Therefore compared to the journal and hydrodynamic bearings, AMBs have benefits of reduced frictional losses as a result they can support high speed rotor. Stable working operation of AMB is principally depends on the working condition of its position sensors, actuators and controller. Therefore sensors and actuators are the important working elements of AMB system. Fault or failure in any one the sensor or actuator of AMB system can results in undesired rot

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10

Li, Shiqing, Michael Frey, and Frank Gauterin. "Model-Based Condition Monitoring of the Sensors and Actuators of an Electric and Automated Vehicle." Sensors 23, no. 2 (2023): 887. http://dx.doi.org/10.3390/s23020887.

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Constant monitoring of driving conditions and observation of the surrounding area are essential for achieving reliable, high-quality autonomous driving. This requires more reliable sensors and actuators, as there is always the potential that sensors and actuators will fail under real-world conditions. The sensitive condition-monitoring methods of sensors and actuators should be used to improve the reliability of the sensors and actuators. They should be able to detect and isolate the abnormal situations of faulty sensors and actuators. In this paper, a developed model-based method for conditio

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Hadush Hailu, Dawit, Berihu G. Gebrehaweria, Gebrehiwet Gebrekrstos Lema, Samrawit H. Kebede, and Tole Sutikno. "Design of routing protocol for enhancing quality of service in wireless ad hoc and sensor netw ork: LEQA." Indonesian Journal of Electrical Engineering and Computer Science 32, no. 3 (2023): 1589. http://dx.doi.org/10.11591/ijeecs.v32.i3.pp1589-1597.

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<p>Wireless sensor networks (WSNs) are now adopting mobile sensors due to their increased popularity in research and industry. To enhance WSNs' performance, mobility can be utilized to gather data. But, if the collector's route is fixed and movement is not manageable, current quality of service (QoS) strategies and protocols are ineffective in achieving timely data delivery while maintaining energy efficiency. In the real world, WSN networks use both actuator - actuator and sensor - actuator coordination. To conserve energy in communicati on tasks with heavy traffic and high volume, sens

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12

Mao, Qi Bo. "Active Control of Sound Transmission Trough a Double Wall Structure." Applied Mechanics and Materials 138-139 (November 2011): 858–63. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.858.

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Based on coupling structural-acoustic modal model, using piezoelectric materials and loudspeaker/microphones as actuator/sensors, the analytical simulations are presented for the actively controlled the sound transmission through double plate structure. Firstly, the results show the potential for using PVDF sensors to improve sound transmission loss. Secondly, the effects of parameters of actuator/sensor and double plate structure on control performances are discussed. And some useful conclusions are obtained, for example, if volume velocity sensor is applied to radiating plate, transmission l

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MARTIN, JAN, SEBASTIAN BECK, ARNE LEHMANN, et al. "SENSORS, IDENTIFICATION, AND LOW LEVEL CONTROL OF A FLEXIBLE ANTHROPOMORPHIC ROBOT HAND." International Journal of Humanoid Robotics 01, no. 03 (2004): 517–32. http://dx.doi.org/10.1142/s0219843604000253.

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The successful control of a robot hand with multiple degrees of freedom not only requires sensors to determine the state of the hand but also a thorough understanding of the actuator system and its properties. This article presents a set of sensors and analyzes the actuator properties of an anthropomorphic robot hand driven by flexible fluidic actuators. These flexible and compact actuators are integrated directly into the finger joints, they can be driven either pneumatically or hydraulically. The sensors for the measurement of joint angles, contact forces, and fluid pressure are described; t

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14

Ma, Ke, Sihuan Wu, Yuquan Zheng, et al. "Development and Integration of Carbon–Polydimethylsiloxane Sensors for Motion Sensing in Soft Pneumatic Actuators." Actuators 13, no. 8 (2024): 285. http://dx.doi.org/10.3390/act13080285.

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Drawing inspiration from the intricate soft structures found in nature, soft actuators possess the ability to incrementally execute complex tasks and adapt to dynamic and interactive environments. In particular, the integration of sensor data feedback allows actuators to respond to environmental stimuli with heightened intelligence. However, conventional rigid sensors are constrained by their inherent lack of flexibility. The current manufacturing processes for flexible sensors are complex and fail to align with the inherent simplicity of soft actuators. In this study, to facilitate the straig

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15

Soman, Rohan, Jee Myung Kim, Alex Boyer, and Kara Peters. "Optimal Design of a Sensor Network for Guided Wave-Based Structural Health Monitoring Using Acoustically Coupled Optical Fibers." Sensors 24, no. 19 (2024): 6354. http://dx.doi.org/10.3390/s24196354.

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Guided waves (GW) allow fast inspection of a large area and hence have received great interest from the structural health monitoring (SHM) community. Fiber Bragg grating (FBG) sensors offer several advantages but their use has been limited for the GW sensing due to its limited sensitivity. FBG sensors in the edge-filtering configuration have overcome this issue with sensitivity and there is a renewed interest in their use. Unfortunately, the FBG sensors and the equipment needed for interrogation is quite expensive, and hence their number is restricted. In the previous work by the authors, the

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16

Konishi, Satoshi, Fuminari Mori, Ayano Shimizu, and Akiya Hirata. "Structural Reinforcement Effect of a Flexible Strain Sensor Integrated with Pneumatic Balloon Actuators for Soft Microrobot Fingers." Micromachines 12, no. 4 (2021): 395. http://dx.doi.org/10.3390/mi12040395.

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Motion capture of a robot and tactile sensing for a robot require sensors. Strain sensors are used to detect bending deformation of the robot finger and to sense the force from an object. It is important to introduce sensors in effective combination with actuators without affecting the original performance of the robot. We are interested in the improvement of flexible strain sensors integrated into soft microrobot fingers using a pneumatic balloon actuator (PBA). A strain sensor using a microchannel filled with liquid metal was developed for soft PBAs by considering the compatibility of sensor

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17

Park, Gyuhae, Charles R. Farrar, Amanda C. Rutherford, and Amy N. Robertson. "Piezoelectric Active Sensor Self-Diagnostics Using Electrical Admittance Measurements." Journal of Vibration and Acoustics 128, no. 4 (2006): 469–76. http://dx.doi.org/10.1115/1.2202157.

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This paper presents a piezoelectric sensor self-diagnostic procedure that performs in situ monitoring of the operational status of piezoelectric materials used for sensors and actuators in structural health monitoring (SHM) applications. The sensor/actuator self-diagnostic procedure, where the sensors/actuators are confirmed to be functioning properly during operation, is a critical component to successfully complete the SHM process with large numbers of active sensors typically installed in a structure. The premise of this procedure is to track the changes in the capacitive value of piezoelec

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18

Ruotsalainen, Pasi, Petter Kroneld, Kalervo Nevala, Timo Brander, Tomi Lindroos, and Merja Sippola. "Shape Control of a FRP Airfoil Structure Using SMA-Actuators and Optical Fiber Sensors." Solid State Phenomena 144 (September 2008): 196–201. http://dx.doi.org/10.4028/www.scientific.net/ssp.144.196.

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The aim of this work was to design a control system for the shape memory alloy (SMA) actuator operated airfoil (a cross section of wind turbine blade). Design of SMA control is focused on the reliable operation of the SMA actuators. The actuator should follow the targeted shape accurately and without too much delay. Another objective is to avoid overheating which is the most critical damage to the structure. SMA actuator shape control is in principle possible to do with any position control method, but the specific properties of the SMA actuators, like the hysteresis, the first cycle effect an

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19

Calderón, Jesus A., Eliseo B. Barriga, Roland Mas, et al. "Magnetic Bearing Proposal Design for a General Unbalanced Rotor System enhanced because of using sensors/actuators based in nanostructures." E3S Web of Conferences 95 (2019): 01002. http://dx.doi.org/10.1051/e3sconf/20199501002.

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Rotor systems need bearings in order to keep uniformity of rotational movement transmission. However, bearingsgenerate friction and energy losses due to heating transmisssion through the friction; for this reason, mechanicak bearings are replaced by magnetic bearings owing to avoid energy losing because of friction. We designed Active Magnetic Bearings (AMB) to transmit rotational movement from source of movement (motor) through the rotor to the movement receptor (such as a conveyor belt). Magnetic Bearings need accuracy during System Identification process and a sophisticated control algorith

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20

Fredrick Gnanaraj, F., and K. R. Vijaya Kumar. "Design and Experimental Analysis of Composite Material with Piezoelectric Layer." Journal of Computational and Theoretical Nanoscience 17, no. 4 (2020): 1812–17. http://dx.doi.org/10.1166/jctn.2020.8445.

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The main objective of this work is to analyze the active vibration control using smart sensors and actuators in a laminated E-Glass/epoxy cyanate composite beam. The cantilevered composite beam has piezoelectric ceramic patches as smart sensors and actuators. Hand layup technique for vibration suppression is done on the fabricated E-Glass/Epoxy-cyanate composite laminated beam. Experimental modal testing is performed to achieve vibration suppression on the flexible composite beam bonded with seven circular type piezoelectric actuator elements and seven circular type sensor elements. The comple

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21

Alsuwian, Turki, Arslan Ahmed Amin, Muhammad Taimoor Maqsood, Muhammad Bilal Qadir, Saleh Almasabi, and Mohammed Jalalah. "Advanced Fault-Tolerant Anti-Surge Control System of Centrifugal Compressors for Sensor and Actuator Faults." Sensors 22, no. 10 (2022): 3864. http://dx.doi.org/10.3390/s22103864.

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Faults frequently occur in the sensors and actuators of process machines to cause shutdown and process interruption, thereby creating costly production loss. centrifugal compressors (CCs) are the most used equipment in process industries such as oil and gas, petrochemicals, and fertilizers. A compressor control system called an anti-surge control (ASC) system based on many critical sensors and actuators is used for the safe operation of CCs. In this paper, an advanced active fault-tolerant control system (AFTCS) has been proposed for sensor and actuator faults of the anti-surge control system

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22

Sung, C. K., T. F. Chen, and S. G. Chen. "Piezoelectric Modal Sensor/Actuator Design for Monitoring/Generating Flexural and Torsional Vibrations of Cylindrical Shells." Journal of Vibration and Acoustics 118, no. 1 (1996): 48–55. http://dx.doi.org/10.1115/1.2889634.

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This paper presents a methodology for designing piezoelectric sensors/actuators in an application to monitor/generate flexural and torsional vibrations of cylindrical shells. Based upon the classical laminate theory the equations of the electro-mechanical interactions, the constitutive, and the strain-displacement relations of piezoelectric composite cylindrical shells are derived. With these relations the piezoelectric sensor and actuator equations of the cylindrical shell are then developed. The modal sensors/actuators fabricated with PVDF embedded in the composite cylindrical shell capable

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Šolek, Peter, and Marek Maták. "An Active Control of the Thin-Walled Mechanical Systems." Applied Mechanics and Materials 611 (August 2014): 22–31. http://dx.doi.org/10.4028/www.scientific.net/amm.611.22.

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This article deals with the influence of optimal actuator and sensor placement on the active control of thin-walled mechanical systems. The approach used for optimal actuator and sensor placement is based on the evaluation norms and. The optimal actuator and sensor placement satisfied the requirements on the controllability, observability and spillover prevention. The investigation of the optimal placement of actuators and sensors is demonstrated on the active vibration of the thin-walled two dimensional mechanical systems.

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CHEN, KEVIN K., and CLARENCE W. ROWLEY. "H2 optimal actuator and sensor placement in the linearised complex Ginzburg–Landau system." Journal of Fluid Mechanics 681 (June 20, 2011): 241–60. http://dx.doi.org/10.1017/jfm.2011.195.

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The linearised complex Ginzburg–Landau equation is a model for the evolution of small fluid perturbations, such as in a bluff body wake. By implementing actuators and sensors and designing an H2 optimal controller, we control a supercritical, infinite-domain formulation of this system. We seek the optimal actuator and sensor placement that minimises the H2 norm of the controlled system, from flow disturbances and sensor noise to a cost on the perturbation and input magnitudes. We formulate the gradient of the H2 squared norm with respect to the actuator and sensor placements and iterate toward

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Bonaldi, Francesco, Giuseppe Geymonat, Françoise Krasucki, and Michele Serpilli. "An asymptotic plate model for magneto-electro-thermo-elastic sensors and actuators." Mathematics and Mechanics of Solids 22, no. 4 (2015): 798–822. http://dx.doi.org/10.1177/1081286515612885.

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We present an asymptotic two-dimensional plate model for linear magneto-electro-thermo-elastic sensors and actuators, under the hypotheses of anisotropy and homogeneity. Four different boundary conditions pertaining to electromagnetic quantities are considered, leading to four different models: the sensor–actuator model, the actuator–sensor model, the actuator model and the sensor model. We validate the obtained two-dimensional models by proving weak convergence results. Each of the four plate problems turns out to be decoupled into a flexural problem, involving the transversal displacement of

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Sunith., S., and Lethakumari R. "Modelling a Smart Structure with Sliding Mode Controller for Vibration Suppression." Modelling a Smart Structure with Sliding Mode Controller for Vibration Suppression 8, no. 11 (2023): 6. https://doi.org/10.5281/zenodo.10251138.

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Modern satellites need sophisticated instruments for remote sensing with microlevel accuracy. This paper features the modelling and design of a cantilever beam made of aluminium with piezoelectric sensor and actuator at its free end and a comparative study of the sensor output voltage with a PID controller as well as Sliding Mode Controller is being done. In earlier methods self-tuning sensors and actuators were used. But it requires coating of the entire beam with piezo film which is much complex. Also, the output of the sensor will not be satisfactory. Since the accuracy is much important in

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Lu, En, Wei Li, Xuefeng Yang, Yuqiao Wang, and Yufei Liu. "Dynamic Modeling and Analysis of a Rotating Piezoelectric Smart Beam." International Journal of Structural Stability and Dynamics 18, no. 01 (2018): 1850003. http://dx.doi.org/10.1142/s0219455418500037.

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In active vibration control study, piezoelectric actuators and sensors are bonded on the surface of a beam. They can change the frequency and modal characteristics of the system. This paper presents an analysis of the frequency response to a rotating piezoelectric smart beam. Hamilton’s principle along with the assumed mode method are employed to derive the governing equations of the first-order approximate coupling model for the piezoelectric smart beam. The coupling is taken into account as the second-order coupling effect of the axial elongation caused by the transverse displacement of the

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Paulitsch, Christoph, Paolo Gardonio, and Stephen J. Elliott. "Active Vibration Damping Using an Inertial, Electrodynamic Actuator (DETC2005-84632)." Journal of Vibration and Acoustics 129, no. 1 (2006): 39–47. http://dx.doi.org/10.1115/1.2349537.

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Active vibration damping using a shunted inertial actuator is advantageous if external sensors cannot be collocated with the actuators, or these sensors would add too much weight or cost. When electrodynamic actuators are used, damping can be directly added to the structure where they are attached without the need of electronic integrators or differentiators. Inertial actuators have also the advantage that they do not need to react relative to a fixed base. In this paper, control with a shunted resistor, current feedback, and induced voltage feedback, with and without inductance compensation,

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Johnson, Marty E., Luiz P. Nascimento, Mary Kasarda, and Chris R. Fuller. "The Effect of Actuator and Sensor Placement on the Active Control of Rotor Unbalance." Journal of Vibration and Acoustics 125, no. 3 (2003): 365–73. http://dx.doi.org/10.1115/1.1569946.

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This paper investigates both theoretically and experimentally the effect of the location and number of sensors and magnetic bearing actuators on both global and local vibration reduction along a rotor using a feedforward control scheme. Theoretical approaches developed for the active control of beams have been shown to be useful as simplified models for the rotor scenario. This paper also introduces the time-domain LMS feedforward control strategy, used widely in the active control of sound and vibration, as an alternative control methodology to the frequency-domain feedforward approaches comm

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Shu, Jing, Junming Wang, Sanders Cheuk Yin Lau, et al. "Soft Robots’ Dynamic Posture Perception Using Kirigami-Inspired Flexible Sensors with Porous Structures and Long Short-Term Memory (LSTM) Neural Networks." Sensors 22, no. 20 (2022): 7705. http://dx.doi.org/10.3390/s22207705.

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Soft robots can create complicated structures and functions for rehabilitation. The posture perception of soft actuators is critical for performing closed-loop control for a precise location. It is essential to have a sensor with both soft and flexible characteristics that does not affect the movement of a soft actuator. This paper presents a novel end-to-end posture perception method that employs flexible sensors with kirigami-inspired structures and long short-term memory (LSTM) neural networks. The sensors were developed with conductive sponge materials. With one-step calibration from the s

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Amin, Arslan Ahmed, and Khalid Mahmood-ul-Hasan. "Hybrid fault tolerant control for air–fuel ratio control of internal combustion gasoline engine using Kalman filters with advanced redundancy." Measurement and Control 52, no. 5-6 (2019): 473–92. http://dx.doi.org/10.1177/0020294019842593.

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In this paper, a hybrid fault tolerant control system is proposed for air–fuel ratio control of internal combustion gasoline engines based on Kalman filters and triple modular redundancy. Hybrid fault tolerant control system possesses properties of both active fault tolerant control system and passive fault tolerant control system. As part of active fault tolerant control system, fault detection and isolation unit is designed using Kalman filters to provide estimated values of the sensors to the engine controller in case of faults in the sensors. As part of passive fault tolerant control syste

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Kabutz, Heiko, and Kaushik Jayaram. "Integrated proprioceptive piezoelectric actuators for miniature robots and devices." Smart Materials and Structures 34, no. 3 (2025): 035004. https://doi.org/10.1088/1361-665x/adac1b.

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Abstract Piezoelectric motors have become a promising technology for the actuation of miniature robots. In this paper, we propose a novel integrated approach to measuring the deflection of piezoelectric actuators, by adding a thin film polyvinylidene fluoride (PVDF) as a dedicated sensor layer in a ceramic actuator laminate (PZT-5 H) to enable proprioception. We leverage our unique femtosecond laser micromachining process to pattern PVDF without altering its dielectric characteristics and validate this experimentally, including quantifying the changes with temperature and laser processing para

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Chieh-Chuan, Feng. "Control Systems in the Presence of Actuators or Sensors Degradation." International Journal of Trend in Scientific Research and Development 1, no. 5 (2017): 97–104. https://doi.org/10.31142/ijtsrd2250.

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In this paper, we design controller that combines an observer and a control to handle systems subject to actuator or sensor degradation including complete failure . The observer contains a pre filter, an adaptive law, and a modified Luenberger observer that achieves estimation of system state and estimation of conditions of actuator or sensor. We have shown that if a set of differential Riccati inequatities DRI is satisfied then the system can be stabilized under actuator degrad ation. While in sensor degradation case if an Algebraci Riccati inequality ARI and a DRI are satisfied then the syst

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Liu, Xiaofeng, Chenshuang Luo, and Liuqi Xiong. "Design of an Improved Hybrid FTC for Faults in Aero-Engine Closed-Loop Control System." International Journal of Aerospace Engineering 2021 (September 16, 2021): 1–19. http://dx.doi.org/10.1155/2021/3553461.

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Due to the aero-engines in a high temperature, pressure, and spool speed environment, the concurrent faults in actuator/sensor combined with degradation of the aero-engine could arise the problem of closed-loop instability during the flight. For this purpose, an improved hybrid fault-tolerant control (FTC) technique has been studied in this paper to deal with simultaneous failure of actuators and sensors associated with health parameters of the typical components’ degradation in aero-engines. The improved hybrid FTC structure combined with the nonlinear thermodynamic component-level (NCL) mode

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Liu, Xu, Li, Wang, and Zhang. "Effect of Adhesive Debonding on the Performance of Piezoelectric Sensors in Structural Health Monitoring Systems." Sensors 19, no. 23 (2019): 5070. http://dx.doi.org/10.3390/s19235070.

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Piezoelectric (PZT) ceramic elements are often subjected to complex loads during in- service lifetime in structural health monitoring (SHM) systems, and debonding of both excitation actuators and receiving sensors have a negative effect on the monitoring signals. A first systematic investigation of debonding behaviors by considering actuators and sensors simultaneously was performed in this paper. The debonding areas of actuators were set in different percentage range from 0% to 70%, and sensors in 0%, 20%, 40% and 60%. The signal-based monitoring method was used to extract the characteristic

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Soman, Rohan, Kaleeswaran Balasubramaniam, Ali Golestani, Michał Karpiński, Pawel Malinowski, and Wieslaw Ostachowicz. "Actuator placement optimization for guided waves based structural health monitoring using fibre Bragg grating sensors." Smart Materials and Structures 30, no. 12 (2021): 125011. http://dx.doi.org/10.1088/1361-665x/ac31c4.

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Abstract Structural health monitoring (SHM) systems have a potential to reduce lifecycle costs of structures. They may be used for maintenance planning which reduces the maintenance cost as well as for lifetime extension. As a result, there is a lot of active research in the area for SHM of civil and mechanical structures. The SHM system should be low cost, suitable for continuous monitoring, able to detect small levels of damage. Guided waves (GW) based SHM techniques allow monitoring of large plate-like structures with few sensors and have been identified as the most promising of techniques

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Bi, Shuhui, Lei Wang, Shengjun Wen, and Liyao Ma. "Operator-Based Control System Analysis and Design for Nonlinear System with Input and Output Constraints." Journal of Robotics and Mechatronics 30, no. 6 (2018): 950–57. http://dx.doi.org/10.20965/jrm.2018.p0950.

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Smart material-based actuators and sensors have been widely used in practice owing to their various advantages. However, in the working process of these actuators and sensors, their output responses always deduce non-smooth nonlinear constraints. The constraint resulting from the actuator is called the input constraint and the constraint caused by the sensor is called the output constraint. These input and output constraints may induce inaccuracies and oscillations, severely degrading system performance. Therefore, the input and output constraints brought about by actuators and sensors should

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He, Yanlin, Lianqing Zhu, Guangkai Sun, Mingxin Yu, and Mingli Dong. "Design, Measurement and Shape Reconstruction of Soft Surgical Actuator Based on Fiber Bragg Gratings." Applied Sciences 8, no. 10 (2018): 1773. http://dx.doi.org/10.3390/app8101773.

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Soft actuators are the components responsible for organs and tissues adsorptive fixation in some surgical operations, but the lack of shape sensing and monitoring of a soft actuator greatly limits their application potential. Consequently, this paper proposes a real-time 3D shape reconstruction method of soft surgical actuator which has an embedded optical fiber with two Fiber Bragg Grating (FBG) sensors. First, the design principle and the sensing of the soft actuator based on FBG sensors are analyzed, and the fabrication process of soft actuator which has an embedded optical fiber with two F

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Tzou, H. S., and C. I. Tseng. "Distributed Modal Identification and Vibration Control of Continua: Piezoelectric Finite Element Formulation and Analysis." Journal of Dynamic Systems, Measurement, and Control 113, no. 3 (1991): 500–505. http://dx.doi.org/10.1115/1.2896438.

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“Smart” continua with integrated sensor/actuator for structural identification and control have drawn much attention in recent years due to the rapid development of high-performance “smart” structures. The continua are distributed and flexible in nature. Thus, distributed dynamic measurement and active vibration control are of importance to their high-demanding performance. In this paper, continua (shells or plates) integrated with distributed piezoelectric sensors and actuators are studied using a finite element technique. A new piezoelectric finite element with internal degrees of freedom is

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Rosen, C., L. Rieger, U. Jeppsson, and P. A. Vanrolleghem. "Adding realism to simulated sensors and actuators." Water Science and Technology 57, no. 3 (2008): 337–44. http://dx.doi.org/10.2166/wst.2008.130.

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In this paper, we propose a statistical theoretical framework for incorporation of sensor and actuator faults in dynamic simulations of wastewater treatment operation. Sensor and actuator faults and failures are often neglected in simulations for control strategy development and testing, although it is well known that they represent a significant obstacle for realising control at full-scale facilities. The framework for incorporating faults and failures is based on Markov chains and displays the appealing property of easy transition of sensor and actuator history into a model for fault generat

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Sharif-Khodaei, Z., Omar Bacarreza, and M. H. Aliabadi. "Lamb-Wave Based Technique for Multi-Site Damage Detection." Key Engineering Materials 577-578 (September 2013): 133–36. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.133.

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The propagation characteristic of Lamb waves activated by Piezoelectric actuators and collected by sensors in a stiffened panel has been investigated. A network of actuators is used to scan the structure before and after the presence of damage. A diagnostic imaging algorithm has been developed based on the probability of damage at each point of the structure measured by the signal reading of sensors in the baseline and damaged structure. A damage localization image is then reconstructed by superimposing the image obtained from each sensor-actuator path. Three-dimensional finite element model w

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Darwish, Mahmoud, Yana Zhabura, and László Pohl. "Recent Advances of VO2 in Sensors and Actuators." Nanomaterials 14, no. 7 (2024): 582. http://dx.doi.org/10.3390/nano14070582.

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Vanadium dioxide (VO2) stands out for its versatility in numerous applications, thanks to its unique reversible insulator-to-metal phase transition. This transition can be initiated by various stimuli, leading to significant alterations in the material’s characteristics, including its resistivity and optical properties. As the interest in the material is growing year by year, the purpose of this review is to explore the trends and current state of progress on some of the applications proposed for VO2 in the field of sensors and actuators using literature review methods. Some key applications i

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Preechayasomboon, Pornthep, and Eric Rombokas. "Sensuator: A Hybrid Sensor–Actuator Approach to Soft Robotic Proprioception Using Recurrent Neural Networks." Actuators 10, no. 2 (2021): 30. http://dx.doi.org/10.3390/act10020030.

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Soft robotic actuators are now being used in practical applications; however, they are often limited to open-loop control that relies on the inherent compliance of the actuator. Achieving human-like manipulation and grasping with soft robotic actuators requires at least some form of sensing, which often comes at the cost of complex fabrication and purposefully built sensor structures. In this paper, we utilize the actuating fluid itself as a sensing medium to achieve high-fidelity proprioception in a soft actuator. As our sensors are somewhat unstructured, their readings are difficult to inter

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Redjimi, Kenza, and Mohammed Redjimi. "WSAN in Smart Agriculture." South Florida Journal of Development 5, no. 12 (2024): e4875. https://doi.org/10.46932/sfjdv5n12-076.

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New information and communication technologies have enabled the emergence of new applications in all areas of professional and social life. The new machines are capable of optimizing and securing production in quantity and quality in a faster, more precise and more personalized way. Modern agriculture, like other sectors, benefits from these technological advances and it is also experiencing profound changes and its automation improves production quantitatively and qualitatively. This work presents some elements of management of a large farm entirely controlled by a set of wireless sensors/act

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Kosaki, Takahiro, and Manabu Sano. "Design of a Pressure Observer and its Application to a Low-Cost Pneumatic Control System." International Journal of Automation Technology 5, no. 4 (2011): 493–501. http://dx.doi.org/10.20965/ijat.2011.p0493.

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The nonlinear pressure observer this paper presents for pneumatic systems and observer-based approaches for controlling position and stiffness eliminate the need for pressure and force sensors. The observer estimates pressure in the pneumatic actuator chamber, acting instead of a sensor in a pressure-feedbackbased system. Conventional single-loop controllers are inadequate for pneumatic actuators because such actuators have high nonlinearities such as air compressibility and friction. Most advanced controllers providing better performance require full-state feedback, and using sensors to acqui

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Seyed Sakha, Masoud, and Hamid Reza Shaker. "Optimal sensors and actuators placement for large-scale unstable systems via restricted genetic algorithm." Engineering Computations 34, no. 8 (2017): 2582–97. http://dx.doi.org/10.1108/ec-04-2016-0138.

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Purpose One of the fundamental problems in control systems engineering is the problem of sensors and actuators placement. Decisions in this context play a key role in the success of control process. The methods developed for optimal placement of the sensors and actuators are known to be computationally expensive. The computational burden is significant, in particular, for large-scale systems. The purpose of this paper is to improve and extend the state-of-the-art methods within this field. Design/methodology/approach In this paper, a new technique is developed for placing sensor and actuator i

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Yilmaz, Ayse Feyza, Fidan Khalilbayli, Kadir Ozlem, et al. "Effect of Segment Types on Characterization of Soft Sensing Textile Actuators for Soft Wearable Robots." Biomimetics 7, no. 4 (2022): 249. http://dx.doi.org/10.3390/biomimetics7040249.

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The use of textiles in soft robotics is gaining popularity because of the advantages textiles offer over other materials in terms of weight, conformability, and ease of manufacture. The purpose of this research is to examine the stitching process used to construct fabric-based pneumatic bending actuators as well as the effect of segment types on the actuators’ properties when used in soft robotic glove applications. To impart bending motion to actuators, two techniques have been used: asymmetry between weave and weft knit fabric layers and mechanical anisotropy between these two textiles. The

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Steffen, Simon, Markus Nitzlader, Timon Burghardt, Hansgeorg Binz, Lucio Blandini, and Werner Sobek. "An Actuator Concept for Adaptive Concrete Columns." Actuators 10, no. 10 (2021): 273. http://dx.doi.org/10.3390/act10100273.

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The building industry accounts for half of the global resource consumption and roughly one third of global CO2 emissions. Global population growth and increasing resource scarcities require engineers and architects to build for more people with less material and emissions. One promising solution are adaptive load-bearing structures. Here, the load-bearing structure is equipped with actuators, sensors, and a control unit which allows the structure to adapt to different load cases, resulting in substantial material savings. While the first prototypes use industry standard actuators to manipulate

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Karthikeyan, A.S, and H.G Hanumantharaju. "Analysis of PZT/PVDF Actuated Cantilever Beams." Journals of Advancement in Machines 4, no. 2 (2019): 37–46. https://doi.org/10.5281/zenodo.3364189.

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Recent advancement in the field of distributed sensor/actuators has led to the development of new structures called “smart structure”. A smart/intelligent structure is able to sense, respond and control its own characteristics and states, so as to significantly improve its operational performance. A structure becomes smart when the load bearing part also called the substrate is composed of conventional structural material and is integrated with the distributed actuation/sensor maybe piezoelectric, shape memory alloys, electrostrictive materials, magnetostrictive materials etc. In t

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Lu, Yifan, Marco Amabili, Jian Wang, et al. "Active vibration control of a polyvinylidene fluoride laminated membrane plate mirror." Journal of Vibration and Control 25, no. 19-20 (2019): 2611–26. http://dx.doi.org/10.1177/1077546319862445.

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Lightweight optical mirrors usually play key roles in aerospace and optical structural systems applied to space telescopes, radars, solar collectors, communication antennas, etc. Due to their high flexibility and low damping properties, external excitations such as orbital maneuver may induce unexpected oscillations and thus reduce their working performance. Active vibration control is therefore essential for the lightweight optical mirror systems. In this spirit, a lightweight mirror structronic system with a linear quadratic optimal controller is presented. The mirror is modeled as a membran

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