Relevant bibliographies by topics / Displacement controlled

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Displacement controlled'

Author: Grafiati
Published: 11 December 2022
Last updated: 26 January 2023

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Journal articles on the topic "Displacement controlled"

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DENGLER, J., and M. SCHMIDT. "THE DYNAMIC PYRAMID—A MODEL FOR MOTION ANALYSIS WITH CONTROLLED CONTINUITY." International Journal of Pattern Recognition and Artificial Intelligence 02, no. 02 (June 1988): 275–86. http://dx.doi.org/10.1142/s0218001488000170.

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The Dynamic Pyramid is a model to solve the correspondence problem of image sequences. A robust estimation of local displacements is combined with controlled continuity constraints. At the heart of the model is the functional of an elastic membrane whose elastic constants are subject to variation. The continuity control function is derived from the tension in the displacement vector field at gray value edges. The displacement term of the functional is based on robust local binary correlations derived from the signs of the bandpass filtered images. The basic representation of the model is the pyramid: The original images are converted into Laplacian pyramids, the signs of which are the features to determine the local displacements as well as the continuity control function. The vector field is built up as a pyramid from coarse to fine, giving the final displacement vector field at the finest level.
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Yin, Jingjing, Huaijian Li, Lingdi Kong, Junwei Cheng, Tonghui Niu, Xiaonan Wang, and Peizhi Zhuang. "Analytical Solution for Elastic Analysis around an Ellipse with Displacement-Controlled Boundary." Mathematical Problems in Engineering 2022 (June 8, 2022): 1–11. http://dx.doi.org/10.1155/2022/2148947.

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This paper presents novel analytical solutions for the analysis of an elliptical cavity within an infinite plane under plane strain conditions, considering typical displacement-controlled boundaries at the inner cavity and biaxial stresses at infinity. The problem is investigated by the plane theory of elasticity using Muskhelishvili’s complex variable method. The complex displacement boundary conditions are represented using the conformal mapping technique and Fourier series, and stress functions are evaluated using Cauchy’s integral formula. The proposed solutions are validated at first by comparing them with other existing solutions and then used to show the influences of displacement vectors on the distributions of induced stresses and displacements. The new solutions may provide useful analytical tools for stress and displacement analysis of an elliptical hole/opening in linear elastic materials which are common in many engineering problems.
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Fan, Hai Bo, Jian Jin, and Ke Li Xing. "Research of Electro-Hydraulic Proportional Variable Displacement Piston Pump Using Fuzzy Logic Control." Advanced Materials Research 655-657 (January 2013): 1179–88. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1179.

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Electro-hydraulic proportional variable displacement piston pump is widely used in various fields because of energy-saving, low noise and advanced control technology. In this study, a fuzzy logic controller was used in a flow and pressure integrated controlled electro-hydraulic proportional variable displacement piston pump’s control system. The simulation model of variable displacement pump was built based on AMESim, and the model of control system with fuzzy logic controlled was built in Simulink. This study research the characteristics of electro-hydraulic proportional variable displacement piston pump’s control system through co-simulation.
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Chetwynd, D. G., X. Liu, and S. T. Smith. "A controlled-force stylus displacement probe." Precision Engineering 19, no. 2-3 (October 1996): 105–11. http://dx.doi.org/10.1016/s0141-6359(96)00008-6.

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Sakakibara, Keita, Leo A. Joyce, Taizo Mori, Takuya Fujisawa, Shagufta H. Shabbir, Jonathan P. Hill, Eric V. Anslyn, and Katsuhiko Ariga. "A Mechanically Controlled Indicator Displacement Assay." Angewandte Chemie 124, no. 38 (August 29, 2012): 9781–84. http://dx.doi.org/10.1002/ange.201203402.

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Sakakibara, Keita, Leo A. Joyce, Taizo Mori, Takuya Fujisawa, Shagufta H. Shabbir, Jonathan P. Hill, Eric V. Anslyn, and Katsuhiko Ariga. "A Mechanically Controlled Indicator Displacement Assay." Angewandte Chemie International Edition 51, no. 38 (August 29, 2012): 9643–46. http://dx.doi.org/10.1002/anie.201203402.

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Suresh, Srinivasan A., Amar Hajj-Ahmad, Elliot W. Hawkes, and Mark R. Cutkosky. "Forcing the issue: testing gecko-inspired adhesives." Journal of The Royal Society Interface 18, no. 174 (January 2021): 20200730. http://dx.doi.org/10.1098/rsif.2020.0730.

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Materials are traditionally tested either by imposing controlled displacements and measuring the corresponding forces, or by imposing controlled forces. The first of these approaches is more common because it is straightforward to control the displacements of a stiff apparatus and, if the material suddenly fails, little energy is released. However, when testing gecko-inspired adhesives, an applied force paradigm is closer to how the adhesives are loaded in practice. Moreover, we demonstrate that the controlled displacement paradigm can lead to artefacts in the assumed behaviour unless the imposed loading trajectory precisely matches the deflections that would occur in applications. We present the design of a controlled-force system and protocol for testing directional gecko-inspired adhesives and show that results obtained with it are in some cases substantially different from those with controlled-displacement testing. An advantage of the controlled-force testing approach is that it allows accurate generation of adhesive limit curves without prior knowledge of the expected behaviour of the material or the loading details associated with practical applications.
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Gehrmann, Oliver, Nils Hendrik Kröger, and Alan Muhr. "Displacement-controlled fatigue testing of rubber is not strain-controlled." International Journal of Fatigue 145 (April 2021): 106083. http://dx.doi.org/10.1016/j.ijfatigue.2020.106083.

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Wu, Yun Feng, Zhu Ming, and Ke Chang Fu. "Feedforward and Feedback Control of an Inverted Pendulum." Advanced Materials Research 328-330 (September 2011): 2194–97. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.2194.

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A feedforward-feedback controller (FFC), which is constructed by a feedforward controller and conventional PID in the global control scheme, is presented to control Inverted Pendulum in this paper. The angle of the swing-bar is defined as controlled variable for the controlled system and the displacement of swing-bar is taken as the disturbance. The feedback controller is used to control the angle and the feedforward controller is used to compensate for the displacement. Experiment results show that the proposed controller is of better control performance than the PID control scheme with two loops and the neural network control (NNC) scheme designed by Googol Technology (HK) Ltd.
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Gluck, J., Y. Ribakov, and A. N. Dancygier. "Selective Control of Base-Isolated Structures with CS Dampers." Earthquake Spectra 16, no. 3 (August 2000): 593–606. http://dx.doi.org/10.1193/1.1586129.

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Addition of dampers to a base isolator reduces base displacements but may increase floor accelerations and interstory drifts. This paper presents a “selective control approach” for the design of base-isolated active controlled structures with Controlled Stiffness Dampers (CSD). According to this approach the dampers are activated only within a given range of the base displacement. The optimal damping forces are calculated according to structure's displacements and velocities. However, because of the CS dampers' structure the actual application of the forces is independent of the displacement and the velocity that are transferred to the device. These forces depend only on the geometry and on the mechanical properties of the devices' springs. The efficiency of the proposed method is demonstrated in a numerical example.
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Dissertations / Theses on the topic "Displacement controlled"

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Lux, Jan, and Hubertus Murrenhoff. "Experimental loss analysis of displacement controlled pumps." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199825.

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Current efficiency measurements of variable hydraulic axial piston pumps are performed with the displacement system locked at maximum volume, thus without the controller. Therefore, the controller’s effect on the efficiency is not quantified at state of the art measurements. Former research on control systems mainly focused on the dynamic behaviour. This paper aims to quantify the losses in the displacement and control system and to research the dependencies of those. Therefore, a test rig is built up at IFAS to measure the control power of displacement controlled pumps. Furthermore, a simulation tool is developed to increase the understanding of the loss mechanisms of the investigated control systems. In conclusion, the paper shows the potential of efficiency improvements for displacement controlled pumps.
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Elton, Mark David. "An efficient haptic interface for a variable displacement pump controlled excavator." Thesis, Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/34653.

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Human-machine interfaces influence both operator effectiveness and machine efficiency. Further immersion of the operator into the machine’s working environment gives the operator a better feel for the status of the machine and its working conditions. With this knowledge, operators can more efficiently control machines. The use of multi-modal HMIs involving haptics, sound, and visual feedback can immerse the operator into the machine’s environment and provide assistive clues about the state of the machine. This thesis develops a realistic excavator model that mimics a mini-excavator’s dynamics and soil interaction during digging tasks. A realistic graphical interface is written that exceeds the quality of current academic simulators. The graphical interface and new HMI are placed together with a model of the excavator’s mechanical and hydraulic dynamics into an operator workstation. Two coordinated control schemes are developed on an haptic display for a mini-excavator and preliminary tests are run to measure increases in operator effectiveness and machine efficiency.
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Cierocka, Joanna, and Jiayue Tang. "Vibrational tests of preloaded rubber vibration isolators : A cam controlled displacement excitation." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53703.

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Vibrations are very common phenomenon. It influences structures and generates acoustic noise which might be harmful to human beings. The vibration isolator was invented to reduce the effect from vibrations. However, the behavior of rubber material, which many vibration isolators are made of, is hard to predict. Consequently, vibration tests are needed to obtain the dynamic properties of rubber isolator.In this case, a six-year old LORD 2204-5 rubber isolator provided by Atlas Copco was tested. The aim of this paper is to obtain the FRF (Frequency Response Function) diagram which can describe the property of the rubber material. Moreover, the influence of aging of rubber material on the dynamic properties was studied.As the vibration test should simulate the working environment of the isolators that are both a static load from the structure and a dynamic force from the engine, a new excitation method was designed. The camshaft with the shape of an epitrochoid induced the sinusoidal signal of the isolator and the frame transferred the static load from the hydraulic machine. The artificial aging was performed in a hot air oven in 90°C for 42 hours, which according to Arrhenius equation should be equivalent to six years of natural aging. The vibration isolator was tested again after being aged.The obtained data showed that the aging process decreased the stiffness of the material. The results were corresponding with other studies regarding aging of rubber.
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Busquets, Enrique, and Monika Ivantysynova. "Toward Supervisory-Level Control for the Energy Consumption and Performance Optimization of Displacement-Controlled Hydraulic Hybrid Machines." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200450.

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Environmental awareness, production costs and operating expenses have provided a large incentive for the investigation of novel and more efficient fluid power technologies for decades. In the earth-moving sector, hydraulic hybrids have emerged as a highly efficient and affordable choice for the next generation hydraulic systems. Displacementcontrolled (DC) actuation has demonstrated that, when coupled with hydraulic hybrids, the engine power can be downsized by up to 50% leading to substantial savings. This concept has been realized by the authors‘ group on an excavator prototype where a secondary-controlled hydraulic hybrid drive was implemented on the swing. Actuatorlevel controls have been formulated by the authors‘ group but the challenge remains to effectively manage the system on the supervisory-level. In this paper, a power management controller is proposed to minimize fuel consumption while taking into account performance. The algorithm, a feedforward and cost-function combination considers operator commands, the DC actuators‘ power consumption and the power available from the engine and hydraulic hybrid as metrics. The developed strategy brings the technology closer to the predicted savings while achieving superior operability.
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Quick, Mark Eric. "A biomechanical analysis of growing rods used in the management of early onset scoliosis (EOS)." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/70333/1/Mark_Quick_Thesis.pdf.

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The use of dual growing rods is a fusionless surgical approach to the treatment of early onset scoliosis (EOS) which aims to harness potential growth in order to correct spinal deformity. This study compared through in-vitro experiments the biomechanical response of two different rod designs under axial rotation loading. The study showed that a new design of telescoping growing rod preserved the rotational flexibility of the spine in comparison with rigid rods indicating them to be a more physiological way to improve the spinal deformity.
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Gojuri, Arun. "Stability of End Notched Flexure Specimen." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4487.

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This paper deals with two-dimensional Finite Element Analysis of the End Notched Flexure (ENF) specimen. The specimen is known to be unstable if the crack length is shorter than some critical crack length acr. A geometric linear two-dimensional Finite Element (FE) analysis of the ENF specimen is performed to evaluate acr for isotropic and orthotropic elastic materials, respectively. Moreover, the Mode II Energy Release Rate (ERR) JII and the compliance of the specimen are calculated. The influence of anisotropy is studied. Comparisons are made with the results from beam theory. This work is an extension of previous work.
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Tufarelli, T. "Qubit-controlled displacements in Markovian environments." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344094/.

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Dean, Patrick T. "Modern control design for a variable displacement hydraulic pump." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4647.

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Thesis (M.S.)--University of Missouri-Columbia, 2006.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 21, 2009) Includes bibliographical references.
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Schoemacker, Florian, Felix Fischer, and Katharina Schmitz. "Damping strategies for energy efficient pressure controllers of variable displacement pumps." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71108.

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In hydraulic-mechanically controlled variable displacement pumps, the actual pump controller produces additional power losses. Due to the low damping coefficients of all pump controller’s components, hydraulic-mechanically pressure controlled pumps use to oscillate while adjusting the pressure level in the hydraulic system. In several state-of-the-art variable pump controllers, a damping orifice connects the control actuator’s displacement chamber with the reservoir. This bypass dampens the movement of the control actuator but also leads to bypass losses during steady-state operation of the pump. A new concept for damping via feedback loops avoiding bypass losses is presented in t his paper.
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Alshammari, Awadh Tulaiahan. "An investigation into different types of controllers of variable displacement axial-piston pumps." Thesis, University of the West of England, Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415881.

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Books on the topic "Displacement controlled"

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David, Brewer, Ghosn Louis, and United States. National Aeronautics and Space Administration., eds. Fracture behavior of ceramics under displacement controlled loading. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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David, Brewer, Ghosn Louis J, and United States. National Aeronautics and Space Administration., eds. Fracture behavior of ceramics under displacement controlled loading. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Book chapters on the topic "Displacement controlled"

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Brokmann, Christopher. "Displacement-Controlled Windscreen Tests." In A Model for the Stochastic Fracture Behavior of Glass and Its Application to the Head Impact on Automotive Windscreens, 87–102. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-36788-6_6.

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Georges-François, P., R. Grasso, A. Berthoz, and I. Israël. "Self-Controlled Reproduction of Passive Linear Displacement." In Multisensory Control of Posture, 199–206. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1931-7_24.

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Garg, Piyush, Ali Ozdagli, and Fernando Moreu. "Optimal Bridge Displacement Controlled by Train Speed on Real-Time." In Conference Proceedings of the Society for Experimental Mechanics Series, 291–99. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54777-0_36.

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Allen, Mary E., and Robert C. Burns. "Outdoor recreation experiences at Diamond Lake, Oregon (USA), before, during and after a biological disruption." In Managing visitor experiences in nature-based tourism, 131–47. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789245714.0011.

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Abstract This chapter examines recreational displacement in response to a unique management and biological event: the introduction of the non-native cyprinid tui chub (Gila bicolor pectinifer) into Diamond Lake. The study demonstrates the behavioural reactions of visitors in response to a management action or a 'controlled' decision to intervene in the impacts of the invasive tui chub. About half of the Diamond Lake visitors who still visit the lake exhibited some temporal and/or spatial displacement behaviours. Visitors at Diamond Lake dealt with the lake's closure by remaining at the lake but participating in another activity (activity substitution) or by moving to an alternative location to continue their primary activity (spatial displacement/resource substitution). More than one-third of all Diamond Lake visitors chose not to recreate during that period (temporal displacement) and 17% changed both their activity and location (absolute displacement).
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Allen, Mary E., and Robert C. Burns. "Outdoor recreation experiences at Diamond Lake, Oregon (USA), before, during and after a biological disruption." In Managing visitor experiences in nature-based tourism, 131–47. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789245714.0131.

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Abstract This chapter examines recreational displacement in response to a unique management and biological event: the introduction of the non-native cyprinid tui chub (Gila bicolor pectinifer) into Diamond Lake. The study demonstrates the behavioural reactions of visitors in response to a management action or a 'controlled' decision to intervene in the impacts of the invasive tui chub. About half of the Diamond Lake visitors who still visit the lake exhibited some temporal and/or spatial displacement behaviours. Visitors at Diamond Lake dealt with the lake's closure by remaining at the lake but participating in another activity (activity substitution) or by moving to an alternative location to continue their primary activity (spatial displacement/resource substitution). More than one-third of all Diamond Lake visitors chose not to recreate during that period (temporal displacement) and 17% changed both their activity and location (absolute displacement).
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Zgurovsky, Mikhail Z., Pavlo O. Kasyanov, Liliia S. Paliichuk, and Alla M. Tkachuk. "Dynamics of Solutions for Controlled Piezoelectric Fields with Multivalued “Reaction-Displacement” Law." In Studies in Systems, Decision and Control, 267–76. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19075-4_16.

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Martiradonna, Luigi, S. Shiv Shankar, and Pier Paolo Pompa. "E-Beam Lithography and Spontaneous Galvanic Displacement Reactions for Spatially Controlled MEF Applications." In Metal-Enhanced Fluorescence, 419–37. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470642795.ch14.

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Dormagen, D., A. Halim, H. Ehrhardt, and W. Dahl. "On the Toughness Evaluation of Sulphide-Controlled Fe 510 Steel by Charpy-V-Impact, Fracture Mechanics, and Wide Plate Tests." In The Crack Tip Opening Displacement in Elastic-Plastic Fracture Mechanics, 267–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82818-8_14.

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Bhandary, Netra Prakash. "Experimental Simulation of Landslide Creep in Ring Shear Machine." In Progress in Landslide Research and Technology, Volume 1 Issue 2, 2022, 75–85. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18471-0_6.

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AbstractSoil material undergoes a volumetric change when deformed, and the change continues until the material reaches its critical state. In granular soils, the critical state is one that exhibits the least frictional resistance, but in clayey materials, the frictional resistance decreases further upon shearing due to particle reorientation in the plane of failure, and the material volume attains a stable or steady state only after a large amount of shear deformation, which depending on the material type varies from a few to tens of centimeters. This state of shear deformation is generally known as the residual state. This article focuses on residual-state creep shear tests on common clayey materials for the purpose of experimentally simulating the landslide creep and understanding the displacement behavior of large-scale creeping landslides. As a general understanding, the deep-seated creeping landslides displace as a result of residual-state shearing of clayey material in the slip surface. So, a modified bishop-type torsional ring shear machine was developed for studying the residual-state shear creep behavior of clayey soils. In the ring shear tests, the material is first sheared under a strain-controlled pattern, and after the sample reaches its residual state of shear, different sets of constant shear loads are applied until the sample fails again and again. The test results reveal that at the residual state of shear, the creep behavior is exhibited only after a load equivalent to the residual frictional resistance of the material is applied. Moreover, it was understood that the displacement required for the beginning of the tertiary stage of creep of particular soil material, i.e., the early stage of creep failure is the same for all sets of creep loads.
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Infante, Gennaro, and Paolamaria Pietramala. "The Displacement of a Sliding Bar Subject to Nonlinear Controllers." In Differential and Difference Equations with Applications, 429–37. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7333-6_37.

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Conference papers on the topic "Displacement controlled"

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Chen, Wei, Cheng-Ta Hsieh, and Massoud Pedram. "Gate sizing with controlled displacement." In the 1999 international symposium. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/299996.300038.

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Holland, Michael A., Keith Harmeyer, and John H. Lumkes. "Electrically Controlled Fixed-Displacement Pump, Variable-Displacement Motor Hydrostatic Transmission." In SAE 2006 Commercial Vehicle Engineering Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-3469.

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Busquets, Enrique, and Monika Ivantysynova. "Priority-Based Supervisory Controller for a Displacement-Controlled Excavator With Pump Switching." In ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9521.

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Environmental and economic factors have driven the advancements in fluid power technologies over the last two decades. Gradual development has been made over time on the state-of-the-art fluid power technology; however, there has been no major advancement leading to radical improvement on systems’ efficiencies. Displacement-controlled (DC) actuation has been under investigation by the authors’ group since its conception in 1998 as a highly efficient alternative to its valve controlled counterpart, demonstrating fuel economy improvements of up to 40% and the possibility for engine downsizing of up to 50% for an excavator truck-loading cycle. Through the installation of a variable displacement hydraulic pump/motor per actuator, DC actuation entirely eliminates the losses due to resistive control and allows for the recuperation of energy from overriding loads. The one-pump-per-actuator requirement however represents the technology’s largest obstacle due to the increased machine production costs. For this reason the authors’ group proposed the idea of pump switching wherein a reduced number of hydraulic units is connected to the actuators in a multi-actuator machine through a distributing manifold. The idea relies on proper design of the distributing manifold and enabling controls to realize machine operability. Work by the authors’ group has demonstrated that the pump-switching idea is feasible on the actuator level, achieving seaming-less switching transitions while retaining the basic fuel savings demonstrated for DC actuation. This paper presents the first formal attempt to create a supervisory controller for a DC multi-actuator machine with pump switching. The controller is based on priority levels geared towards the maximization of the number of available actuator combinations. Implementation on a DC hydraulic hybrid excavator prototype show the feasibility of the control approach as well as the limitations and further improvements.
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Collberg, Leif, Kristoffer Aronsen, Andrew Palmer, and Guillermo Hahn. "Benefit of Partly Displacement Controlled Condition in Sagbend." In ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2003. http://dx.doi.org/10.1115/omae2003-37376.

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Some codes like BS8010 and DNV-OS-F101 distinguish between load controlled condition or displacement controlled (or strain based) condition. Even though the principles are clear, it is often hard to determine the difference in practice. A displacement controlled condition allows a higher utilization and is therefore beneficial, and can be applied provided that the condition can be classified as a displacement controlled condition. Many projects have had intense discussions on this matter during the last 15 years, however, without much progress. The objective of this paper is two-fold. First it will show that a discussion on load controlled versus displacement controlled is of limited value. The discussion should rather be on how to take benefit of a partially displacement controlled condition. Second, the paper gives a suggestion on how to allow for a partially displacement controlled condition, also determining the degree of displacement control. The suggestion is supported by specific FE-calculations.
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Busquets, Enrique, and Monika Ivantysynova. "An Adaptive Robust Control for Displacement-Controlled End-Effectors." In 8th FPNI Ph.D Symposium on Fluid Power. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpni2014-7808.

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Cascade linear control strategies with output feedback have been studied at the Maha Fluid Power Research Center to demonstrate robust control for displacement-controlled rotary actuation. These strategies have been mainly investigated for closed-loop actuator control where the operator specifies the actuator position to close the loop. This paper presents an extension of the work developed for this kind of actuation by introducing a non-linear control strategy for open-loop applications (i.e. the operator closes the loop via a joystick). The test bench, a 1.5 ton hydraulically-operated end-effector with a range of motion of 270° is utilized to validate the obtained control law. The proposed control scheme, an adaptive robust control (ARC) law, ensures system stability and robustness for a wide range of motion while eliminating the linear controller approach limitations. Furthermore, changes in the plant behavior are taken into account through online parameter adaptation. To emphasize on the advantages of ARC, a deterministic robust control (DRC) law has been derived from the ARC. Results show that the advantages of online parameter adaptation lead to a dramatic increase on the actuator position accuracy. In addition, the ARC results are compared to the cascade controller developed by Grabbel in 2004.
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Tamura, Ichiro, Shinichi Matsuura, Ryuya Shimazu, and Koji Kimura. "Categorization of Dynamic Loading Into Force-Controlled Loading and Displacement-Controlled Loading." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-85098.

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To investigate the behavior of inelastic single-degree-of-freedom systems, the maximum restoring forces and maximum deformations of the systems due to a harmonic excitation are calculated and drawn as a diagram. These systems have restoring forces characterized by bilinear skeleton curve of the kinematic hardening type. The diagram shows two types of characteristics, and the dynamic loadings can be categorized into force-controlled loading and displacement-controlled loading.
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Garcia-Torales, Guillermo, Marija Strojnik, and Gonzalo Paez. "Controlled wavefront displacement using a thin prism system." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Marija Strojnik and Bjorn F. Andresen. SPIE, 1998. http://dx.doi.org/10.1117/12.331323.

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Radermacher, Tobias, Jürgen Weber, and Dominik Dorner. "Dynamic Force Control of Displacement Controlled Drives by Means of an Iterative Learning Algorithm." In ASME/BATH 2013 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fpmc2013-4500.

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Displacement controlled drive trains are applied more and more in industry because they are an energy efficient alternative to valve control. One major burden, for the use in a wide range of application, is the lower dynamic performance, which is caused by the large inertial forces of either swash plate pumps or speed controlled constant pumps. Additional challenges are the lack of control strategies, which determine the overall system dynamic performance. Starting with a comparison of four different linear drive trains (valve control, electro-mechanic, pump control, speed control) it is shown that the potential of a speed controlled drive train can be obtained by the use of an iterative learning controller. Once the controller is parameterized it is able to improve the tracking behavior significantly without having any effect on the plants stability.
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Heikkila, Mikko, and Matti Linjama. "Hydraulic Energy Recovery in Displacement Controlled Digital Hydraulic System." In 13th Scandinavian International Conference on Fluid Power, June 3-5, 2013, Linköping, Sweden. Linköping University Electronic Press, 2013. http://dx.doi.org/10.3384/ecp1392a51.

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Kishibuchi, Akira, Michiyasu Nosaka, and Tetsuhiko Fukanuma. "Development of Continuous Running, Externally Controlled Variable Displacement Compressor." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-0876.

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Reports on the topic "Displacement controlled"

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Nanba, Yoshihide, Yoshihiro Takada, and Tomoo Shiozaki. Research of an Electronic Controlled Fuel Supply System for a Diesel Engine for Small Displacement Two-wheeled Vehicles. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0040.

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Scott, P., R. Olson, O. G. Wilkowski, C. Marschall, and R. Schmidt. Crack stability in a representative piping system under combined inertial and seismic/dynamic displacement-controlled stresses. Subtask 1.3 final report. Office of Scientific and Technical Information (OSTI), June 1997. http://dx.doi.org/10.2172/493375.

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Wang, Wei, Michael Brown, Matteo Ciantia, and Yaseen Sharif. DEM simulation of cyclic tests on an offshore screw pile for floating wind. University of Dundee, December 2021. http://dx.doi.org/10.20933/100001231.

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Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.
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