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Thematische Bibliographien / Actice force measurement / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Actice force measurement“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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1

Owusu-Ansah, Prince, Yefa Hu, and Rhoda Afriyie Mensah. "Active Magnetic Bearing as a Force Measurement System." International Journal of Materials, Mechanics and Manufacturing 5, no. 3 (2017): 209–12. http://dx.doi.org/10.18178/ijmmm.2017.5.3.320.

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Marshall, J. T., M. E. F. Kasarda, and J. Imlach. "A Multipoint Measurement Technique for the Enhancement of Force Measurement With Active Magnetic Bearings." Journal of Engineering for Gas Turbines and Power 125, no. 1 (2002): 90–94. http://dx.doi.org/10.1115/1.1519268.

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Active magnetic bearings (AMBs) have the unique capability to act concurrently as support bearings and load cells for measuring shaft forces. Current state-of-the-art methods for force measurement rely on models with limited accuracy due to effects which are difficult to characterize such as fringing, leakage, and variations in material properties. In addition, these effects may be a function of actual air gaps which are difficult to determine in a dynamic operating environment. This paper discusses a new force measurement methodology that inherently accounts for these types of effects and oth

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Baun, D. O., and R. D. Flack. "A Plexiglas Research Pump With Calibrated Magnetic Bearings/Load Cells for Radial and Axial Hydraulic Force Measurement." Journal of Fluids Engineering 121, no. 1 (1999): 126–32. http://dx.doi.org/10.1115/1.2821992.

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A research pump intended for both flow visualization studies and direct measurement of hydrodynamic radial and axial forces has been developed. The impeller and the volute casing are constructed from Plexiglas which facilitates optical access for laser velocimetry measurements of the flow field both inside the impeller and in the volute casing. The pump housing is designed for flexibility allowing for each interchange of impellers and volute configurations. The pump rotor is supported by three radial magnetic bearings and one double acting magnetic thrust bearing. The magnetic bearings have be

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Di Terlizzi, I., M. Gironella, D. Herraez-Aguilar, et al. "Variance sum rule for entropy production." Science 383, no. 6686 (2024): 971–76. http://dx.doi.org/10.1126/science.adh1823.

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Entropy production is the hallmark of nonequilibrium physics, quantifying irreversibility, dissipation, and the efficiency of energy transduction processes. Despite many efforts, its measurement at the nanoscale remains challenging. We introduce a variance sum rule (VSR) for displacement and force variances that permits us to measure the entropy production rate σ in nonequilibrium steady states. We first illustrate it for directly measurable forces, such as an active Brownian particle in an optical trap. We then apply the VSR to flickering experiments in human red blood cells. We find that σ i

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Kurihara, Kazue. "Surface forces measurement for materials science." Pure and Applied Chemistry 91, no. 4 (2019): 707–16. http://dx.doi.org/10.1515/pac-2019-0101.

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Abstract This article reviews the surface forces measurement as a novel tool for materials science. The history of the measurement is briefly described in the Introduction. The general overview covers specific features of the surface forces measurement as a tool for studying the solid-liquid interface, confined liquids and soft matter. This measurement is a powerful way for understanding interaction forces, and for characterizing (sometime unknown) phenomena at solid-liquid interfaces and soft complex matters. The surface force apparatus (SFA) we developed for opaque samples can study not only

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De, Pra Yuri, Stefano Papetti, Federico Fontana, and Emidio Tiberi. "An Open-Source Robotic Tool for the Simulation of Quasi-Static Finger Pressing on Stationary and Vibrating Surfaces." IEEE Transactions on Haptics 14, no. 2 (2021): 273–78. https://doi.org/10.5281/zenodo.6606252.

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The Bogus Finger is a remote-controllable tool for simulating vertical pressing forces of various magnitude as exerted by a human finger. Its main application is the characterization of haptic devices under realistic active touch conditions. The device is released as an open-source hardware and software DIY project that can be easily built using off-the-shelf components. We report the characterization of the quasi-static properties of the device, and validate its dynamic response to pressing on a vibrating surface by comparison with human fingers. The present prototype configuration accurately

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Hoh, N. J., and R. N. Zia. "Hydrodynamic diffusion in active microrheology of non-colloidal suspensions: the role of interparticle forces." Journal of Fluid Mechanics 785 (November 16, 2015): 189–218. http://dx.doi.org/10.1017/jfm.2015.602.

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Hydrodynamic diffusion in the absence of Brownian motion is studied via active microrheology in the ‘pure-hydrodynamic’ limit, with a view towards elucidating the transition from colloidal microrheology to the non-colloidal limit, falling-ball rheometry. The phenomenon of non-Brownian force-induced diffusion in falling-ball rheometry is strictly hydrodynamic in nature; in contrast, analogous force-induced diffusion in colloids is deeply connected to the presence of a diffusive boundary layer even when Brownian motion is very weak compared with the external force driving the ‘probe’ particle. T

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Nudehi, Shahin, Ranjan Mukherjee, and Steven W. Shaw. "Active Vibration Control of a Flexible Beam Using a Buckling-Type End Force." Journal of Dynamic Systems, Measurement, and Control 128, no. 2 (2005): 278–86. http://dx.doi.org/10.1115/1.2192836.

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In this paper, we explore the use of end forces for vibration control in structural elements. The process involves vibration measurement and observer-based estimation of modal amplitudes, which are used to determine when to apply an end load such that it will remove vibration energy from the structure. For this study, we consider transverse vibration of a cantilever beam with a buckling-type end load that can be switched between two values, both of which are below the buckling load. The stability of the control system is proven using Lyapunov stability theory and its effectiveness is demonstra

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Sharp, Andrew A., Blake W. Cain, Joanna Pakiraih, and James L. Williams. "A system for the determination of planar force vectors from spontaneously active chicken embryos." Journal of Neurophysiology 112, no. 9 (2014): 2349–56. http://dx.doi.org/10.1152/jn.00423.2014.

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Generally, a combination of kinematic, electromyographic (EMG), and force measurements are used to understand how an organism generates and controls movement. The chicken embryo has been a very useful model system for understanding the early stages of embryonic motility in vertebrates. Unfortunately, the size and delicate nature of embryos makes studies of motility during embryogenesis very challenging. Both kinematic and EMG recordings have been achieved in embryonic chickens, but two-dimensional force vector recordings have not. Here, we describe a dual-axis system for measuring force genera

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Bugenhagen, Bernhard Eberhard Christian, and Annika Baumann. "An Integrated New Method for the Characterisation of Thickness Changes in Battery Active Materials during Cyclisation Under Pressure." ECS Meeting Abstracts MA2024-01, no. 2 (2024): 243. http://dx.doi.org/10.1149/ma2024-012243mtgabs.

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Measuring thickness-changes in a battery stack (dilation) during cyclisation is paramount for the characterisation of chemo-mechanical properties of battery materials. A variety of approaches to achieve these measurements is available, either for measuring the whole stack or individual active materials. Another topic of great interest is the cyclisation of batteries under an applied pressure. These pressures range from a few kPa to hundreds of MPa. Especially the research of solid-state battery materials requires measurements of electrochemical properties under pressure. In light of this, char

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Yang, Yuan Yuan, Lei Wang, Jiu Bin Tan, et al. "Self-Sensing Giant Magnetostrictive Actuator for Active Vibration Isolation." Applied Mechanics and Materials 870 (September 2017): 67–72. http://dx.doi.org/10.4028/www.scientific.net/amm.870.67.

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Giant magnetostrictive actuator (GMA) are commonly used in active vibration isolation domain for hight frequency response and large output force. GMA has a nonlinear displacement output when disturbed by vibrations. In order to compensate for the nonlinearity and improve the precision of the system, the critical process is the measurement of external disturbances which can be realized with a bridge circuit based on a traditional equivalent circuit model. However, the sensitivity is restricted because of the integral relationship between the force and the open circuit voltage. In this paper, th

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Wada, Nobutaka, Akihiro Takahashi, Masami Saeki, and Masaharu Nishimura. "Vehicle Yaw Control Using an Active Front Steering System with Measurements of Lateral Tire Forces." Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2010.5 (2010): 319–24. http://dx.doi.org/10.1299/jsmeicam.2010.5.319.

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Jobse, Hans, Ruud Schuurhof, Ferenc Cserep, A. Wim Schreurs, and Jos J. de Koning. "Measurement of Push-Off Force and Ice Friction during Speed Skating." International Journal of Sport Biomechanics 6, no. 1 (1990): 92–100. http://dx.doi.org/10.1123/ijsb.6.1.92.

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Portable equipment for active measurements of push-off force and ice friction was developed. The equipment consists of a pair of skates with three measuring elements between the shoe and the skate blade to register force in both fore/aft and normal direction. A portable computer samples the friction force and normal force signals during one or more strokes, calculates the mean coefficient of ice friction, and stores the sampled data in memory. The push-off force and ice friction force were measured. The peak push-off forces reach values of up to 140% of body weight. The magnitude of the coeffi

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Stojanović, Goran, Milan Radovanović, Dragana Vasiljević, et al. "Comparison of Performances of Flexible Tailor-Made Force Sensing Resistors Fabricated Using Inkjet and Xurographic Techniques." Journal of Sensors 2019 (July 7, 2019): 1–8. http://dx.doi.org/10.1155/2019/9181492.

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The force is one of the parameters very often measured in our life. Force sensing resistors (FSRs) can be successfully used for measuring force, especially that they can be applied in dentistry for measuring bite forces. However, it is very difficult to apply commercial FSRs for accurate measurement of bite forces and to ensure personalized approach to each patient. Because of that, design, fabrication, and characterization of tailor-made force sensing resistors intended for application in dental medicine are presented in this paper. We designed two FSRs, one with two active areas and one with

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Carabello, Alina, Rick Henkner, and Welf-Guntram Drossel. "Novel Procedure for Determining the Finger Force in Flexion Depending on the Finger Position." Current Directions in Biomedical Engineering 8, no. 2 (2022): 384–87. http://dx.doi.org/10.1515/cdbme-2022-1098.

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Abstract Introduction: The design and development of a novel dynamic hand orthosis that allows individual and progressive adaptation to the patient’s condition require knowledge about the maximum voluntary contraction forces of the fingers. The following work presents a test setup and procedure for determination of isometric finger contraction forces during flexion depending on various finger positions and finger tasks. Methods: The test setup places hand and fingers in certain positions (position 0: grasping of a plate; position 1-3: circular grasping of cylinders of three different diameters

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McIntyre, J., E. V. Gurfinkel, M. I. Lipshits, J. Droulez, and V. S. Gurfinkel. "Measurements of human force control during a constrained arm motion using a force-actuated joystick." Journal of Neurophysiology 73, no. 3 (1995): 1201–22. http://dx.doi.org/10.1152/jn.1995.73.3.1201.

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1. When interacting with the environment, human arm movements may be prevented in certain directions (i.e., when sliding the hand along a surface) resulting in what is called a "constrained motion." In the directions that the movement is restricted, the subject is instead free to control the forces against the constraint. 2. Control strategies for constrained motion may be characterized by two extreme models. Under the active compliance model, an essentially feedback-based approach, measurements of contact force may be used in real time to modify the motor command and precisely control the for

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Werner, Lennart, Michael Strohmeier, Julian Rothe, and Sergio Montenegro. "Thrust Vector Observation for Force Feedback-Controlled UAVs." Drones 6, no. 2 (2022): 49. http://dx.doi.org/10.3390/drones6020049.

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This paper presents a novel approach to Thrust Vector Control (TVC) for small Unmanned Aerial Vehicles (UAVs). The difficulties associated with conventional feed-forward TVC are outlined, and a practical solution to conquer these challenges is derived. The solution relies on observing boom deformations that are created by different thrust vector directions and high-velocity air inflow. The paper describes the required measurement electronics as well as the implementation of a dedicated testbed that allows the evaluation of mid-flight force measurements. Wind-tunnel tests show that the presente

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Koter, Katarzyna, Martyna Samowicz, Justyna Redlicka, and Igor Zubrycki. "Hand Measurement System Based on Haptic and Vision Devices towards Post-Stroke Patients." Sensors 22, no. 5 (2022): 2060. http://dx.doi.org/10.3390/s22052060.

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Diagnostics of a hand requires measurements of kinematics and joint limits. The standard tools for this purpose are manual devices such as goniometers which allow measuring only one joint simultaneously, making the diagnostics time-consuming. The paper presents a system for automatic measurement and computer presentation of essential parameters of a hand. Constructed software uses an integrated vision system, a haptic device for measurement, and has a web-based user interface. The system provides a simplified way to obtain hand parameters, such as hand size, wrist, and finger range of motions,

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Haeger, Ricarda, Felipe de Souza Leite, and Dilson E. Rassier. "Sarcomere length non-uniformities dictate force production along the descending limb of the force–length relation." Proceedings of the Royal Society B: Biological Sciences 287, no. 1937 (2020): 20202133. http://dx.doi.org/10.1098/rspb.2020.2133.

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The force–length relation is one of the most defining features of muscle contraction, and yet a topic of debate in the literature. The sliding filament theory predicts that the force produced by muscle fibres is proportional to the degree of overlap between myosin and actin filaments, producing a linear descending limb of the active force–length relation. However, several studies have shown forces that are larger than predicted, especially at long sarcomere lengths (SLs). Studies have been conducted with muscle fibres, preparations containing thousands of sarcomeres that make measurements of i

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Yao, Lei, Qingguang Gao, Dailin Zhang, Wanpeng Zhang, and Youping Chen. "An Integrated Compensation Method for the Force Disturbance of a Six-Axis Force Sensor in Complex Manufacturing Scenarios." Sensors 21, no. 14 (2021): 4706. http://dx.doi.org/10.3390/s21144706.

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As one of the key components for active compliance control and human–robot collaboration, a six-axis force sensor is often used for a robot to obtain contact forces. However, a significant problem is the distortion between the contact forces and the data conveyed by the six-axis force sensor because of its zero drift, system error, and gravity of robot end-effector. To eliminate the above disturbances, an integrated compensation method is proposed, which uses a deep learning network and the least squares method to realize the zero-point prediction and tool load identification, respectively. Af

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Naghshineh, K., and G. H. Koopmann. "An Active Control Strategy for Achieving Weak Radiator Structures." Journal of Vibration and Acoustics 116, no. 1 (1994): 31–37. http://dx.doi.org/10.1115/1.2930393.

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A general control strategy is presented for active suppression of total radiated sound power from harmonically excited structures based on the measurement of their response. Using the measured response of the structure together with knowledge of its structural mobility, an equivalent primary excitation force is found at discrete points along the structure. Using this equivalent primary force and performing a quadratic optimization of the power radiated from the structure, a set of control forces is found at selected points on the structure that results in minimum radiated sound power. A numeri

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Aguilera-Castells, Joan, Bernat Buscà Safont-Tria, Javier Peña López, Azahara Fort-Vanmeerhaeghe, Mònica Solana-Tramunt, and Jose Morales Aznar. "Suspended lunge exercise: assessment of forces in different positions and paces." Aloma: Revista de Psicologia, Ciències de l'Educació i de l'Esport 37, no. 1 (2019): 57–64. http://dx.doi.org/10.51698/aloma.2019.37.1.57-64.

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The forces exerted on the suspension device have been examined in upper body exercises, like push-ups or inverted raw. For this reason, this aim of this study was to determine the effect of body position, contraction patterns and pace on force production by the lower limb during the execution of suspended lunge exercises. Ten physically active male university students (n = 10, age = 23.70±2.83 years old) performed sixteen suspended lunges in four different positions and three different paces (60, 70, and 80 beats per minute). A load cell was used to assess the forces exert on the suspension de

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Lorenz, M., B. Heimann, and V. Härtel. "A Novel Engine Mount with Semi-Active Dry Friction Damping." Shock and Vibration 13, no. 4-5 (2006): 559–71. http://dx.doi.org/10.1155/2006/263251.

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In this paper the authors present a semi-active engine mount with a controllable friction damper. The normal force of the friction contact is applied by an electromagnetic actuator and can be varied dynamically. The nonlinear current-force-relation of the actuator is linearized. To account for wear and assembly tolerances, an initialization method is developed, that is based on indirect measurement of the actuators inductance. The friction contact is made up of industrial friction pads and a friction rod of steel. The friction model used is suitable especially for small oscillations of the fri

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Remme, Espen W., Anders Opdahl, and Otto A. Smiseth. "Mechanics of left ventricular relaxation, early diastolic lengthening, and suction investigated in a mathematical model." American Journal of Physiology-Heart and Circulatory Physiology 300, no. 5 (2011): H1678—H1687. http://dx.doi.org/10.1152/ajpheart.00165.2010.

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We investigated the determinants of ventricular early diastolic lengthening and mechanics of suction using a mathematical model of the left ventricle (LV). The model was based on a force balance between the force represented by LV pressure (LVP) and active and passive myocardial forces. The predicted lengthening velocity ( e′) from the model agreed well with measurements from 10 dogs during 5 different interventions ( R = 0.69, P < 0.001). The model showed that e′ was increased when relaxation rate and systolic shortening increased, when passive stiffness was decreased, and when the rate of

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Alguacil-Diego, Isabel M., Alicia Cuesta-Gómez, David Pont, et al. "A Novel Active Device for Shoulder Rotation Based on Force Control." Sensors 23, no. 13 (2023): 6158. http://dx.doi.org/10.3390/s23136158.

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This article describes a one-degree-of-freedom haptic device that can be applied to perform three different exercises for shoulder rehabilitation. The device is based on a force control architecture and an adaptive speed PI controller. It is a portable equipment that is easy to use for any patient, and was optimized for rehabilitating external rotation movements of the shoulder in patients in whom this was limited by muscle–skeletal injuries. The sample consisted of 12 shoulder rehabilitation sessions with different shoulder pathologies that limited their range of shoulder mobility. The mean a

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Olgac, N., and M. Hosek. "Active Vibration Absorption Using Delayed Resonator With Relative Position Measurement." Journal of Vibration and Acoustics 119, no. 1 (1997): 131–36. http://dx.doi.org/10.1115/1.2889680.

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A novel active vibration absorption technique, the Delayed Resonator, has been introduced recently as a unique way of suppressing undesired oscillations. It suggests a control force on a mass-spring-damper absorber in the form of a proportional position feedback with a time delay. Its strengths consist of extremely simple implementation of the control algorithm, total vibration suppression of the primary structure against a harmonic force excitation and full effectiveness of the absorber in a semi-infinite range of disturbance frequency, achieved by real-time tuning. All this development work

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Rao, M. M., and T. K. Datta. "Predictive Active Control of Building Frames with a Solo Neurocontroller." Journal of Vibration and Control 11, no. 5 (2005): 627–41. http://dx.doi.org/10.1177/1077546305052316.

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We present an efficient generalized control scheme using a solo neural network controller (neuro-controller) for the predictive single mode response control of building frames subjected to earthquake excitation. The control scheme is developed by considering the time delay that exists between the measurement of response and the actual application of the control force. Response measurements are taken from only one point of the structure. The neurocontroller is directly trained to provide the control force signal for a predetermined response reduction, called the target reduction. The neurocontr

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Stone, R. S. W., and P. N. Brett. "A Sensing Technique for the Measurement of Tactile Forces in the Gripping of Dough-Like Materials." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 210, no. 3 (1996): 261–69. http://dx.doi.org/10.1243/pime_proc_1996_210_115_02.

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This paper describes a tactile sensing technique that is devised for applications concerned with the control of the active gripping of deformable compact shaped non-rigid materials. The sensor uses measurements of thin aluminium plate deformation to determine a close representation of the force distribution applied to the surface of the workpiece and can be used to indicate deformation and slip of soft materials under the action of gripping forces. Two methods of operation are described along with the results of each of these implementations. The first method utilizes a model of the sensor mec

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Fuentes Holden, J. P., L. Gan, D. Sims-Williams, J. Gilbert, P. Osborne, and M. Bastankhah. "Characterisation and Integration of Piezoelectric Trimorph Actuators for Blade Active Surface Control on a Scaled Wind Turbine." Journal of Physics: Conference Series 2767, no. 9 (2024): 092094. http://dx.doi.org/10.1088/1742-6596/2767/9/092094.

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Abstract The paper investigates the integration of piezoelectric bending actuators on trailing edge flaps (TEF). The characterisation of piezoelectric actuators is of great importance due to differences in performance resulting from sample variability, actuator construction, circuit type and equipment. For the application of trailing edge flaps in scaled turbines, the total deflection these actuators can produce determines the possible flap angles and, consequently, the potential effects on wake evolution downwind of the wind turbine. In this paper, we fully characterise the performance of the

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Yun, Gyu-young, Heung Soo Kim, and Jaehwan Kim. "Blocked force measurement of an electro-active paper actuator using a cantilevered force transducer." Smart Materials and Structures 17, no. 2 (2008): 025021. http://dx.doi.org/10.1088/0964-1726/17/2/025021.

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Prins, Robert J., Mary E. F. Kasarda, and Samantha C. Bates Prins. "A System Identification Technique Using Bias Current Perturbation for Determining the Effective Rotor Origin of Active Magnetic Bearings." Journal of Vibration and Acoustics 129, no. 3 (2006): 317–22. http://dx.doi.org/10.1115/1.2424976.

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Locating the effective rotor origin of an active magnetic bearing (AMB) is an important step toward accurate characterization of the bearing air gaps for field tuning, performance analyses, and some shaft force measurement techniques. Specifically, application of current-based force measurement techniques to AMBs requires accurate modeling of air gaps in order to predict dynamic forces with accuracy. This paper discusses the application of a system identification technique that employs perturbation of the bias current and allows the user to establish the location of the effective rotor origin,

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Gao, Shuxiang, and Ying Ye. "Acute Vascular Response of Hand to Force and Vibration." Vibration 5, no. 1 (2022): 153–64. http://dx.doi.org/10.3390/vibration5010010.

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This study aimed to investigate the acute effect of grip and feed exertions on the vascular system at the fingers during exposure to hand-arm vibration (HAV), and to identify which active hand force situation would have the most effect on finger vascular function. A total of 12 individuals attended the test, and each of them were subjected to eight sets of force-and-vibration situations: four with combinations of forces and vibration, and four control ones with only hand forces applied. The vibration stimulus was applied on the right hand at 2.75 m/s2 with a frequency of 125 Hz for three minut

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Dąbrowa, Tomasz, Dominik Badura, Bartosz Pruchnik, et al. "Correlation between Friction and Wear in Cylindrical Anchorages Simulated with Wear Machine and Analyzed with Scanning Probe and Electron Microscope." Materials 16, no. 5 (2023): 1991. http://dx.doi.org/10.3390/ma16051991.

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This paper presents the possibilities of applying atomic force microscopy (AFM) techniques to the study of the wear of prosthetic biomaterials. In the conducted research, a zirconium oxide sphere was used as a test piece for mashing, which was moved over the surface of selected biomaterials: polyether ether ketone (PEEK) and dental gold alloy (Degulor M). The process was carried out with constant load force in an artificial saliva environment (Mucinox). An atomic force microscope with an active piezoresistive lever was used to measure wear at the nanoscale. The advantage of the proposed techno

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Kildal, Oddbjørn, Øyvind W. Petersen, and Ole Øiseth. "On the identification of aerodynamic derivatives using forced vibration in active grid generated turbulent flow." Journal of Physics: Conference Series 2647, no. 24 (2024): 242001. http://dx.doi.org/10.1088/1742-6596/2647/24/242001.

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Abstract Aerodynamic derivatives are widely used to model the self-excited forces on bridges and for estimating the corresponding flutter stability limit. It is currently unclear to which degree the aerodynamic derivatives of a cross-section depend on the presence of turbulence in the incoming flow. However, it is believed to depend on the cross-section. In this study, wind tunnel experiments were conducted with forced vibration testing to investigate whether aerodynamic derivatives for a twin deck cross-section changed with increasing turbulence and whether longer measurement periods would yi

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Keller, Monique M., Roline Y. Barnes, and Corlia Brandt. "Activities of daily living with grasp types and force measurements during object manipulation." South African Journal of Occupational Therapy 54, no. 1 (2024): 15–21. http://dx.doi.org/10.17159/2310-3833/2024/vol54no1a3.

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Background: Limited scientific evidence guides hand rehabilitation towards improved hand function, and safe early return to work. Grasp types, the subunits of object manipulation and the forces which may improve functional outcomes, have been identified as missing links that may inform rehabilitation after second to fifth metacarpal fractures, through progression of basic and instrumental activities of daily living (ADL). The aim of the study was to collect ADL forces through grasp types to inform hand rehabilitation for second to fifth metacarpal fractures. Methods: This cross-sectional, quan

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Tsveov, Mihail, Pavel Venev, Dimitar Chakarov, and Ivanka Veneva. "Simulations and experimental evaluation of an active orthosis for interaction in virtual environments." MATEC Web of Conferences 145 (2018): 01006. http://dx.doi.org/10.1051/matecconf/201814501006.

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In this work, the development of a human arm active orthosis is presented. The orthosis is designed primarily for training and rehabilitation in virtual environments.The orthosis system is intended for embodiment in virtual reality where it is allowing human to perceive forces at different body parts or the weight of lifted objects. In the paper the choice of a mechanical structure is shown equivalent to the structure of the human arm. A mechanical model of the orthosis arm as haptic device is built, where kinematic and dynamic parameters are evaluated. Impedance control scheme is selected as

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Weinhandl, Joshua T., Bobbie S. Irmischer, and Zachary A. Sievert. "Effects of Gait Speed of Femoroacetabular Joint Forces." Applied Bionics and Biomechanics 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/6432969.

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Alterations in hip joint loading have been associated with diseases such as arthritis and osteoporosis. Understanding the relationship between gait speed and hip joint loading in healthy hips may illuminate changes in gait mechanics as walking speed deviates from preferred. The purpose of this study was to quantify hip joint loading during the gait cycle and identify differences with varying speed using musculoskeletal modeling. Ten, healthy, physically active individuals performed walking trials at their preferred speed, 10% faster, and 10% slower. Kinematic, kinetic, and electromyographic da

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Shu, Jicheng, Jianping Sun, Dingwen Zhang, and Huanwei Wei. "Sequential Measurement and Analysis of Large Underground Retaining Structures by Diaphragm Wall Anchor for the Spring Area." Advances in Civil Engineering 2019 (November 11, 2019): 1–21. http://dx.doi.org/10.1155/2019/5291420.

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The performance of a diaphragm wall-anchor structure in spring area in Jinan city, China, is studied. Based on field measured data, lateral wall deflections, lateral soil movements, horizontal displacement of the capping beam, the maximum lateral wall deflection, ground surface settlement, lateral earth pressures on diaphragm wall, internal force of diaphragm wall, axial anchoring forces, settlements of adjacent building, and pore-water pressure are investigated. The results indicate that the maximum deflections of the lateral wall are 0.07%∼0.18% of the excavation depth (He). The ground surfa

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Koo, Bonjin, and Placid M. Ferreira. "An active MEMS probe for fine position and force measurements." Precision Engineering 38, no. 4 (2014): 738–48. http://dx.doi.org/10.1016/j.precisioneng.2014.03.010.

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Takeuchi, Akitoshi. "OS6-17 An Attempt to Measure the Force and Moment Acting on Hub-bearing with Ultrasonic Technique(Measurement Techniques using Ultrasonics (1),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 88. http://dx.doi.org/10.1299/jsmeatem.2015.14.88.

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Kim, Jaehwan, Yukeun Kang, and Sungryul Yun. "Blocked force measurement of electro-active paper actuator by micro-balance." Sensors and Actuators A: Physical 133, no. 2 (2007): 401–6. http://dx.doi.org/10.1016/j.sna.2006.04.019.

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Kasarda, M. E., J. Marshall, and R. Prins. "Active magnetic bearing based force measurement using the multi-point technique." Mechanics Research Communications 34, no. 1 (2007): 44–53. http://dx.doi.org/10.1016/j.mechrescom.2006.06.003.

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CHEN, CHAO-JUNG, YEN-LIANG CHEN, and LIANG-CHIH CHANG. "PITCH MEASUREMENT BY TRACEABLE ATOMIC FORCE MICROSCOPE." International Journal of Nanoscience 02, no. 04n05 (2003): 335–41. http://dx.doi.org/10.1142/s0219581x0300136x.

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A Traceable Atomic Force Microscope (TAFM) to calibrate the pitch standards is presented. The TAFM consists of an atomic force microscope, a three-axis active compensation flexure stage, two laser interferometers, an L-shape mirror, a vibration isolator, and a super-Invar metrology frame. A test specimen is laid on the same plane of laser interferometers to eliminate the Abbe-offset. The displacements of X and Y axes are taken by the laser interferometers, the Z movement is controlled by AFM cantilever and the displacement is taken by a capacitance sensor while the flexure stage moves the spec

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Wright, S., and P. G. Weyand. "The application of ground force explains the energetic cost of running backward and forward." Journal of Experimental Biology 204, no. 10 (2001): 1805–15. http://dx.doi.org/10.1242/jeb.204.10.1805.

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We compared backward with forward running to test the idea that the application of ground force to support the weight of the body determines the energetic cost of running. We hypothesized that higher metabolic rates during backward versus forward running would be directly related to greater rates of ground force application and the volume of muscle activated to apply support forces to the ground. Four trained males ran backward and forward under steady-state conditions at eight treadmill speeds from 1.75 to 3.50 m s(−)(1). Rates of oxygen uptake were measured to determine metabolic rates, and

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Bagchi, Amritashish, Shiny Raizada, Rohit K. Thapa, Valentina Stefanica, and Halil İbrahim Ceylan. "Reliability and Accuracy of Portable Devices for Measuring Countermovement Jump Height in Physically Active Adults: A Comparison of Force Platforms, Contact Mats, and Video-Based Software." Life 14, no. 11 (2024): 1394. http://dx.doi.org/10.3390/life14111394.

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Measuring countermovement jump (CMJ) height accurately is essential for evaluating lower-body explosive power in athletes and other active populations. With technological advancements, various portable tools have been developed for this purpose, including force platforms, contact mats, and video-based software. This study aimed to (a) investigate the test–retest reliability of the KINVENT K-Deltas force platform for CMJ height measurement and (b) compare its accuracy with a contact mat (Chronojump, Spain) and a video-based software (My Jump app, version 3). Twenty-two physically active collegi

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Kohl, D., C. Kerschner, and G. Schitter. "Active damping by Q-control for fast force-distance curve measurements in atomic force microscopy." Review of Scientific Instruments 88, no. 12 (2017): 123711. http://dx.doi.org/10.1063/1.4991604.

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Leite, Felipe S., Fábio C. Minozzo, Albert Kalganov, et al. "Reduced passive force in skeletal muscles lacking protein arginylation." American Journal of Physiology-Cell Physiology 310, no. 2 (2016): C127—C135. http://dx.doi.org/10.1152/ajpcell.00269.2015.

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Arginylation is a posttranslational modification that plays a global role in mammals. Mice lacking the enzyme arginyltransferase in skeletal muscles exhibit reduced contractile forces that have been linked to a reduction in myosin cross-bridge formation. The role of arginylation in passive skeletal myofibril forces has never been investigated. In this study, we used single sarcomere and myofibril measurements and observed that lack of arginylation leads to a pronounced reduction in passive forces in skeletal muscles. Mass spectrometry indicated that skeletal muscle titin, the protein primarily

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Achkire, Y., and A. Preumont. "Optical Measurement of Cable and String Vibration." Shock and Vibration 5, no. 3 (1998): 171–79. http://dx.doi.org/10.1155/1998/387973.

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This paper describes a non contacting measurement technique for the transverse vibration of small cables and strings using an analog position sensing detector. On the one hand, the sensor is used to monitor the cable vibrations of a small scale mock-up of a cable structure in order to validate the nonlinear cable dynamics model. On the other hand, the optical sensor is used to evaluate the performance of an active tendon control algorithm with guaranteed stability properties. It is demonstrated experimentally, that a force feedback control law based on a collocated force sensor measuring the t

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Beltran-Carbajal, Francisco, Antonio Valderrabano-Gonzalez, Antonio Favela-Contreras, Jose Luis Hernandez-Avila, Irvin Lopez-Garcia, and Ruben Tapia-Olvera. "An Active Vehicle Suspension Control Approach with Electromagnetic and Hydraulic Actuators." Actuators 8, no. 2 (2019): 35. http://dx.doi.org/10.3390/act8020035.

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An active vibration control approach from an online estimation perspective of unavailable feedback signals for a quarter-vehicle suspension system is introduced. The application of a new signal differentiation technique for the online estimation of disturbance trajectories due to irregular road surfaces and velocity state variables is described. It is assumed that position measurements are only available for active disturbance suppression control implementation. Real-time signal differentiation is independent of detailed mathematical models of specific dynamic systems and control force generat

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Collins, Liam, Stephen Jesse, Jason I. Kilpatrick, et al. "Kelvin probe force microscopy in liquid using electrochemical force microscopy." Beilstein Journal of Nanotechnology 6 (January 19, 2015): 201–14. http://dx.doi.org/10.3762/bjnano.6.19.

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Conventional closed loop-Kelvin probe force microscopy (KPFM) has emerged as a powerful technique for probing electric and transport phenomena at the solid–gas interface. The extension of KPFM capabilities to probe electrostatic and electrochemical phenomena at the solid–liquid interface is of interest for a broad range of applications from energy storage to biological systems. However, the operation of KPFM implicitly relies on the presence of a linear lossless dielectric in the probe–sample gap, a condition which is violated for ionically-active liquids (e.g., when diffuse charge dynamics ar

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