Thematische Bibliographien / Cable parameters

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Auswahl der wissenschaftlichen Literatur zum Thema „Cable parameters“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 3. Februar 2022

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Zeitschriftenartikel zum Thema "Cable parameters"

Kaczorek-Chrobak und Fangrat. „Influence of Constructional-Material Parameters on the Fire Properties of Electric Cables“. Energies 12, Nr. 23 (29.11.2019): 4569. http://dx.doi.org/10.3390/en12234569.

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The significant number of cables of different materials and construction used extensively in building objects increases their fire load and, therefore, strongly influences safety in the case of fire. The purpose of the study was to identify relevant factors related to the construction of electrical cables, and perform a qualitative and quantitative assessment of their influence on specific fire properties, such as heat release and smoke production. Fifteen cables of different construction and materials were studied using the EN 50399 standard test. The analysis was focused on cable constructional-material parameters related to the chemical composition of non-metallic elements and the number and shape of conductors in the cable, as well as the concentric barrier as armor or the copper concentric conductor. The conclusions drawn from the experiments were: (1) Construction, the number of conductors, and the presence of armor or concentric metallic conductors improve the fire properties by forming a barrier against flame penetration through the cable; (2) the use of copper conductors resulted in a decrease of fire parameters compared to cables with aluminum conductors (peakHRRav parameter even four times lower for copper cable); (3) construction material based on non-plasticized poly(vinyl chloride) (PVC) significantly reduced the fire properties of cables more than halogen-free materials (LS0H) (peakHRRav parameter more than 17 times higher for the fully halogenated cable), which is due to the decomposition process of the material; and (4) no clear relationship between the fire parameters and the cable parameter, χ, was found.

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Dan, Danhui, Bin Xu, Ye Xia, Xingfei Yan und Pengfei Jia. „Intelligent parameter identification for bridge cables based on characteristic frequency equation of transverse dynamic stiffness“. Journal of Low Frequency Noise, Vibration and Active Control 39, Nr. 3 (18.12.2018): 678–89. http://dx.doi.org/10.1177/1461348418814617.

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Determining the cable force and other parameters of cables is important for condition assessment of cable-stayed structures. This study proposes a frequency characteristic equation of transverse dynamic stiffness for cables; this equation is suitable for measuring the vibrations to evaluate the primary factors that influence the accuracy of cable parameter identification. Further, a cable parameter identification method based on the particle swarm optimization algorithm is proposed. The method is suitable for a cable system of arbitrary length and with moderate sag especially when the measurement quality of the modal frequencies of cables is poor. Both numerical case studies and a cable vibration test proved that the proposed method can identify parameters with high accuracy for cables of any length and for cases requiring low-frequency measurement. Moreover, structural modal order information is not required. The extreme case is that only one order frequency can achieve highly accurate result in this way. The proposed method is suitable for parameter identification of short cables, hanger cables, and parallel strand cables, which are commonly applicable in engineering applications.

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Gao, Fabao, Ruifang Wang und S. K. Lai. „Bifurcation and Chaotic Analysis for Cable Vibration of a Cable-Stayed Bridge“. International Journal of Structural Stability and Dynamics 20, Nr. 02 (07.01.2020): 2071004. http://dx.doi.org/10.1142/s0219455420710042.

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Cable-stayed bridges are of the most unique and cost-effective designs in modern bridge engineering. A key feature of these structures is that the cables or stays run directly from the tower to the deck. The nonlinear dynamic behavior of these cables can significantly affect the resilience and safety of the bridge. In this context, a deeper understanding of the bifurcation and chaotic mechanisms of cable vibration is highly desirable. Accordingly, in this study the nonlinear dynamic equation of a planar cable is derived for quantitative and qualitative analysis. The nonlinear system is solved asymptotically, using the conventional perturbation and two-timing scale methods, to study the periodic motion of the cables. The obtained solutions are primarily affected by the control parameters and the initial conditions. The asymptotic solutions are also simulated numerically. It is found that the chaotic behavior of cables is greatly affected by the governing parameters, including the cable dimensions, vibration amplitude, damping effect, and excitation frequency. Finally, seven state variables of the nonlinear system are analyzed to investigate the occurrence of bifurcation.

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Ismailov, GM. „Flexible cable strength with regard to tribological interaction of its elements“. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, Nr. 4 (26.12.2018): 638–48. http://dx.doi.org/10.1177/1350650118821019.

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This paper considers certain issues of tribological interaction between flexible cable elements. It proposes a new approach for determining frictional forces of cable elements while taking into account cable parameters. This study is the first to derive formulas of mechanical stresses in the zone of contacting elements for assessing the cable strength. The paper demonstrates how the derived formulas for cables can be used in practice for design purposes. The influence of geometric parameters of cable design on its strength has been analyzed.

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Lou, Ya’nan, Haoyu Lin, Pengkun Quan, Dongbo Wei und Shichun Di. „Self-Calibration for the General Cable-Driven Serial Manipulator with Multi-Segment Cables“. Electronics 10, Nr. 4 (11.02.2021): 444. http://dx.doi.org/10.3390/electronics10040444.

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This paper focuses on the kinematic calibration problem for the general cable-driven serial manipulator (CDSM) with multi-segment cables to improve its motion control accuracy. Firstly, to fully describe the calibration parameters of cables, links, joint positions, and the transmission system, this paper proposes a new cable routing description method named cable-routing configuration struct (CRCS), which provides a complete set of parameters to be calibrated for the proposed self-calibration algorithm. Then, a self-calibration algorithm for CDSM with motor incremental encoders is proposed, which can calibrate the robot at one time only using sufficient measured motor and joint positions. Its premise, the initial cable length, needs to be calibrated. Finally, the parameters of a three-DOF (degree of freedom) six-cable CDSM were described using the CRCS description method, and a comparative experiment was carried out on the same motion controller using the parameters before and after calibration. The experiment results of trajectory tracking error showed that the calibration parameters obtained by the proposed calibration algorithm can significantly improve the motion control accuracy of the three-DOF six-cable CDSM. This verified the correctness and effectiveness of the proposed calibration algorithm.

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Fu, Chen-Zhao, Wen-Rong Si, Lei Quan und Jian Yang. „Numerical Study of Heat Transfer in Trefoil Buried Cable with Fluidized Thermal Backfill and Laying Parameter Optimization“. Mathematical Problems in Engineering 2019 (25.02.2019): 1–13. http://dx.doi.org/10.1155/2019/4741871.

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Trefoil buried cable is one of the important cable arrangements for the underground transmission line, and its heat transfer performance is relatively poor. By filling with fluidized thermal backfill material (FTB) around trefoil buried cables, the heat transfer would be efficiently enhanced, while the filling cost should also be considered. In the present study, the heat transfer process in the FTB trefoil buried cables is numerically studied, where the cable core loss and eddy current loss in the cable were coupled for the simulation. The heat transfer performances and ampacities for trefoil buried cables with different back fill materials were analysed and compared with each other. Then, the laying parameters for the parabolic-type FTB trefoil buried cables were optimized with the radial basis function neural network (RBNN) and genetic algorithm (GA). Firstly, it is found that, with FTB material, the maximum temperature in the cable core is obviously reduced, and the cable ampacity is greatly improved as compared with the cables buried around natural soil (NS). Secondly, when compared with flat-type FTB model, the heat transfer rate in the cable with parabolic-type FTB laying method would be slightly reduced, while the FTB amount used for the buried cables is greatly reduced. Finally, as for parabolic-type FTB trefoil buried cables, with proper design of geometric parameters (s1 = 0.290 m, s2 = 0.302 m, and l = 0.3 m with I = 1300 A) for the FTB laying cross section, the overall performance for the cable was optimized.

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Semenov, А. B., und T. S. Abbasova. „Synthesis of symmetrical cables for infocommunication systems with improved noise immunity characteristics“. Informacionno-technologicheskij vestnik, Nr. 4 (30.12.2018): 99–108. http://dx.doi.org/10.21499/2409-1650-2018-4-99-108.

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A synthesis of construction of cables of category 6a for infocommunication systems with improved characteristics of noise immunity is carried out. The parameters of transient pickups and total transient pickups for the proposed cable design are calculated, and the cable diameter of the initial and proposed designs is estimated. The estimation of improvement of mass-dimension parameters of a cable of a proposed design is carried out. It is shown that due to chamber (group) unearthed screening, it is possible to significantly reduce the influence characteristics and the mass-dimensional parameters of the cable.

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Chen, Gang, Qing Hao Wang, Guo Bin Liu, Tian Shu Hai, Bo Liu, Yi Ran Li, Bo Li, Lei Wang, Dong Wei Huang und Chuan Zong Zhao. „The Field Test of High Voltage Cable Impedance Parameters“. Advanced Materials Research 986-987 (Juli 2014): 1682–84. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1682.

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The cables in 66 kV and 220 kV systems are used in single-phase style, and it must be grounded between the cables. The connection ways between different lengths of cables are in different ways, thus, it may occur influence to circuit parameters, especially to zero sequence impedance. In order to clarify the situation from theory analysis to calculate impedance under all kinds of connection modes, the paper gives an actual cable measured value, and introduces the correct measuring method, together, points out the matters needing attention in the measurement.

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Liu, Zhansheng, Guoliang Shi, Antong Jiang und Wenjie Li. „Intelligent Discrimination Method Based on Digital Twins for Analyzing Sensitivity of Mechanical Parameters of Prestressed Cables“. Applied Sciences 11, Nr. 4 (06.02.2021): 1485. http://dx.doi.org/10.3390/app11041485.

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The information collected on large-span prestressed cables by field sensors is susceptible to interference, which leads to inaccurate collection of structural and mechanical parameters of large-span prestressed cables, resulting in misjudgment of structural safety performance. This paper proposes an intelligent judgment method for improving the sensitivity of analyzing mechanical parameters of prestressed cables based on digital twins (DTs). The safety performance of the structure was evaluated by analyzing the mechanical parameters. First, the information during prestressed cable tensioning is dynamically sensed, thereby establishing a multidimensional model of structural analysis. The virtual model is processed by the model modification rule to improve the robustness of the simulation; thus, a DT framework for the sensitivity judgment of the mechanical parameters of the cable is built. In the twin model, the simulation data of the real structure were extracted. Probabilistic analysis was performed using the Dempster–Shafer(D–S) evidence theory to discriminate the sensitivity of mechanical parameters of each cable node under the action of external forces with high accuracy and intelligence. Sensitivity analysis provides a reliable basis for the safety performance assessment of structures. Taking the wheel–spoke-type cable truss as an example, the application of DTs and D–S evidence theory to the sensitivity determination of cable mechanical parameters under temperature fully verified that the proposed intelligent method can effectively evaluate the safety performance of the actual structure.

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Papastergiou, Georgia, und Ioannis Raftoyiannis. „The use of Classical Rolling Pendulum Bearings (CRPB) for vibration control of stay-cables“. MATEC Web of Conferences 148 (2018): 02002. http://dx.doi.org/10.1051/matecconf/201814802002.

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Cables are efficient structural elements that are used in cable-stayed bridges, suspension bridges and other cable structures. A significant problem which arose from the praxis is the cables’ rain-wind induced vibrations as these cables are subjected to environmental excitations. Rain-wind induced stay-cable vibrations may occur at different cable eigenfrequencies. Large amplitude Rain-Wind-Induced-Vibrations (RWIV) of stay cables are a challenging problem in the design of cable-stayed bridges. Several methods, including aerodynamic or structural means, have been investigated in order to control the vibrations of bridge’s stay-cables. The present research focuses on the effectiveness of a movable anchorage system with a Classical Rolling Pendulum Bearing (CRPB) device. An analytical model of cable-damper system is developed based on the taut string representation of the cable. The gathered integral-differential equations are solved through the use of the Lagrange transformation. . Finally, a case study with realistic geometrical parameters is also presented to establish the validity of the proposed system.

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Dissertationen zum Thema "Cable parameters"

Lukowiaks, Jakub. „Vision-based Cable Parameters Identification“. Thesis, Umeå universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-167766.

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Industrial robots have increased their presence on the market in recent years increasing the importance of smart maintenance. Unexpected downtime due to robot cable damage is the main cause for production downtime in manufacturing plants. There is also a strong trend towards consolidating tools for computer aided design and engineering of manufacturing processes and plants. This thesis provides a machine learning implementation in a simulated environment using a Gaussian process for determining dynamic cable parameters such as Young’s modulus and damping in order to increase cable simulation value. Better simulations will result in more confident programming measures of avoiding dangerous motions and thereby increasing cable lifetime. Results obtained from simulations show that it is possible to obtain dynamic cable parameters in certain error margin using just a few markers.

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Hoshmeh, Abdullah, und Uwe Schmidt. „A Full Frequency-Dependent Cable Model for the Calculation of Fast Transients“. Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-228649.

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The calculation of frequency-dependent cable parameters is essential for simulations of transient phenomena in electrical power systems. The simulation of transients is more complicated than the calculation of currents and voltages in the nominal frequency range. The model has to represent the frequency dependency and the wave propagation behavior of cable lines. The introduced model combines an improved subconductor method for the determination of the frequency-dependent parameters and a PI section wave propagation model. The subconductor method considers the skin and proximity effect in all conductors for frequency ranges up to few megahertz. The subconductor method method yields accurate results. The wave propagation part of the cable model is based on a cascaded PI section model. A modal transformation technique has been used for the calculation in the time domain. The frequency-dependent elements of the related modal transformation matrices have been fitted with rational functions. The frequency dependence of cable parameters has been reproduced using a vector fitting algorithm and has been implemented into an resistor-inductor-capacitor network (RLC network) for each PI section. The proposed full model has been validated with measured data.

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Kavan, Pavel. „Parametry silnoproudých vedení“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218979.

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At the beginning is diploma thesis focused on a distribute power line parameters measurement and examination changes of this parameters depending on using of various power line cables. On the basis of measurements is made a transmission channel in Matlab & Simulink, where are executed simulations with power transmission line. The simulated power line is based on measured distribute parameters or physical proportions of cabels. By changing different parts of simulated communication channel is a symbol error rate expressed on the lenght of transmission line.

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Váša, Lukáš. „Parametry kabelových vedení“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442551.

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In recent years, the development trend of power grids character shows increased demand for using cables of both current overhead and newly constructed lines. In order to preserve reliable operation and to predict the maintenance requirements, it is crucial to regard not only the parameters certified by manufacturers, but also externalities induced by real environment and incorporate these externalities into cable models in simulation software. The diploma thesis deals with determining of characteristic parameters of single core cables in real environment, which are affected by real grounding methods of metal shielding. The emphasis is put on analysis of current cable models in simulation software PSCAD and its evaluation using two-step experiment 1) measurement of shunt parameters in laboratory using electronic bridge model and 2) on field measurement of cable series parameters in real environment.

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Theed, Justin Edward. „Environmental parameter for cable ratings“. Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287344.

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Mrákava, Petr. „Realizace počítačových modelů vedení pro PLC“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218227.

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The subject of this thesis is to become familiar with the different parameters describing the lines, and the possibility of modeling data and power models. The thesis also outlined the difference in the mechanical structure of different types of cables. The practical part focuses only on the power cables and measure their basic parameters. Then is created computer model which describes the behavior of cable lines at higher frequencies than are primarily intended. The final section is an experimental network created by the PLC for remote reading of electricity meters, and it measured different transmission properties.

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Stølan, Ronny. „Losses and Inductive Parameters in Subsea Power Cables“. Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9992.

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Four samples of galvanized steel armour for sub sea power cables are tested with an electric steel tester. The samples exhibit diﬀerent remanence magnetization and permeability. The eﬀects of permeability on loss in sub sea cables is found to be insigniﬁcant. Slight increase of conductor inductance due to increase in permeability of armour wires is observed. Mutual cancellation of inductance between circuits that are twisted opposite to each other, or with respect to one circuit, is conﬁrmed with laboratory tests and measurements on full scale sub sea power cables. The parameters of one cable is calculated using IECs analytical approach and found to be inaccurate for conductor resistance. The Calculations places 22% of total cable loss in the armour. Measurements on two sub sea cables and analysis using ﬁnite element method contradict the calculated armour loss. Parameters for two sub sea power cables are calculated based on measurements performed on the actual cables. The calculated values are compared with values computed using ﬁnite element analysis. Derived physics from laboratory experiments and measurements on the cables is applied in ﬁnite element analysis and found to be accurate compared with calculated values from measurements and computed values using Flux 2.5D.

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Luong, David, und Ibrahim Salloum. „Investigation of electromagnetic compatibility (EMC) of low-voltage (<60V) DC electric motors in construction machinery application“. Thesis, Linköpings universitet, Fysik och elektroteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-162160.

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The brushed DC motor is a source of electromagnetic emission that may cause interference. The main issues with brushed DC motor are arcing, which occurs between the brushes and commutator, and inrush current. It is possible to decrease the electromagnetic emissions by addressing the source (brushed dc motor) and the installation. The source may be addressed by using filters in the form of X2Y-capacitors on the terminals or ferrites on the cables. The installation does not produce any emission, but it is possible to lower its contribution. This is done by altering the installation like changing the placement of cables and provide good coupling. An effective way of decreasing inrush currents is by using negative-thermal-coefficient (NTC) thermistors. Another measure to improve the EMC properties of the brushed DC motor is to design the motor so that it can trap EM emissions. Some of these parameters are motor house material, end-cap material, vent holes or slots on motor housing, placement of power terminals, crimping tabs and motor enclosure.

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Anniballi, Giulio. „Analysis of superconducting Rutherford cables through a lumped parameter circuit“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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The upgrade of the LHC, High Luminosity Large Hadron Collider requires more powerful bending magnets. Four of the 1232 dipoles based on Nb-Ti technology will be replaced with magnets made of Nb3Sn in order to create space for collimators. This technology will allow the induction magnetic field of the magnets to pass from 8 to 11 Tesla. In this way, shorter magnets are needed for the same integrated field. Nb3Sn has never been used in magnet technology and its use represents a technological challenge. One of the main characteristic of Nb3Sn is its fragility. This feature could damage one or more of the forty strands of the Rutherford Cable during cool down and assembling phase, creating a breakage. The current flow will be interrupted in correspondence to the breakage and in order to preserve the transport current, it has to flow from the broken strand to others (current distributions). The aim of this thesis focuses on the analysis of a Rutherford superconducting cable with a breakage through lumped parameter circuits. In the first phase, a steady state model has been developed to allow us to calculate the values of the adjacent and crossing strands as a function of the spatial coordinate during current plateau. In order to reduce the complexity of the problem, the developed circuit is made of only three strands. Each of these strands represent a typology in which the forty strands of the cable have been divided : broken, adjacent and crossing strands. The model has been validated by a comparison with numerical software THEA (Thermal, Hydraulic and Electric Analysis of a generic superconducting cable). Subsequently of the validation, some parametric studies have been carried out in order to understand which physical parameters of the cable play a key role in the current distribution. In the second phase, the time dependence of the model has been implemented by adding dynamic components. The circuit under exam has been solved through state space representation.

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La, Voie Scott Lewis. „Parameter estimation for a modified cable model using a Green's function and eigenvalue perturbation“. [Johnson City, Tenn. : East Tennessee State University], 2003. http://etd-submit.etsu.edu/etd/theses/available/etd-0331103-140715/unrestricted/LaVoieS04162003a.pdf.

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Thesis (M.S.)--East Tennessee State University, 2003.
Title from electronic submission form. ETSU ETD database URN: etd-0331103-140715. Includes bibliographical references. Also available via Internet at the UMI web site.

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Bücher zum Thema "Cable parameters"

Kadar, Ladislau Istvan *. The influence of cable swings on the electrical parameters of flexible cables. 1989.

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Buchteile zum Thema "Cable parameters"

Tsaliovich, Anatoly. „Transfer Parameters of Cable Shields“. In Cable Shielding for Electromagnetic Compatibility, 131–229. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-6591-8_3.

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Spak, Kaitlin, Gregory Agnes und Daniel Inman. „Cable Parameters for Homogenous Cable-Beam Models for Space Structures“. In Dynamics of Civil Structures, Volume 4, 7–18. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04546-7_2.

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Le, Luu Xuan, H. Katsuchi, L. G. To, S. E. H. A. M. Zarbaf und Cuong-Le Thanh. „Estimation of Cable Tension with Unknown Parameters Using Artificial Neural Networks“. In Lecture Notes in Civil Engineering, 77–88. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0945-9_6.

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Guoyou, Hu, Li Shunming, Xia Pinqi, Men Xiuhua und Guo Haidong. „Transmission Parameters Extraction of Multi-conductor Cable Based on Transmission Circuit Method“. In Electrical, Information Engineering and Mechatronics 2011, 1691–97. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2467-2_201.

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Gaponenko, Elena V., Dmitry I. Malyshev, Victoria S. Kuzmina und Larisa A. Rybak. „Geometric Parameters Optimization of Cable-Driven Parallel Robot with a Movable Gripper“. In Studies in Systems, Decision and Control, 61–71. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66081-9_5.

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Walther, Rene. „The Influence of the Basic Parameters on the Load Bearing Behaviour of Cable Stayed Bridges“. In Progress in Structural Engineering, 547–66. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3616-7_38.

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Babaghasabha, Reza, Mohammad A. Khosravi und Hamid D. Taghirad. „Adaptive Control of KNTU Planar Cable-Driven Parallel Robot with Uncertainties in Dynamic and Kinematic Parameters“. In Mechanisms and Machine Science, 145–59. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09489-2_11.

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Chellal, Ryad, Edouard Laroche, Loïc Cuvillon und Jacques Gangloff. „An Identification Methodology for 6-DoF Cable-Driven Parallel Robots Parameters Application to the INCA 6D Robot“. In Mechanisms and Machine Science, 301–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31988-4_19.

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Notash, Leila. „Manipulator Deflection for Optimum Tension of Cable-Driven Robots with Parameter Variations“. In Mechanisms and Machine Science, 26–36. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61431-1_3.

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Kumari, Swati, Sunidhi Luthra, Jyoti Chauhan, Bijendra Pal, Saood Ahmad, Ravinder Kumar, P. S. Negi und V. N. Ojha. „S-Parameter Based Evaluation of Cable Losses for Precise Low Frequency Voltage and Current Calibration“. In Advances in Power Systems and Energy Management, 307–13. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4394-9_31.

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Konferenzberichte zum Thema "Cable parameters"

Borges, G., R. M. Rodrigues, C. Sales, K. Ericson und J. Costa. „Cable parameters identification for DSL systems“. In IEEE EUROCON 2011 - International Conference on Computer as a Tool. IEEE, 2011. http://dx.doi.org/10.1109/eurocon.2011.5929302.

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Xie, Zexiao, Ben Ma und Ping Ren. „Computed Torque Control of a Two-DOF Cable-Suspended Parallel Mechanism“. In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66015.

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This paper presents the design of a computed torque controller for a two-degree-of-freedom (two-dof) cable-suspended parallel mechanism. Unlike fully constrained cable-driven parallel mechanisms, cable-suspended parallel mechanisms are not redundantly actuated and usually have the same number of actuated cables as the degrees of freedom. Compared with rigid-link parallel mechanisms, the control of cabled parallel mechanisms is more challenging in that the cable tensions are unidirectional. Taking the input constraints into account, the method of computed torque control is applied to the two-dof planar cable robot. The sufficient conditions and necessary & sufficient conditions of the controller’s parameters are obtained, under which the positiveness of the tensions is always maintained during the point-to-point motion within the cable robot’s static workspace. Numerical simulations show that the controller is computationally efficient and the end-effector of the robot could converge to desired final positions with exponential stability.

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Qinghai Shi, U. Troltzsch und O. Kanoun. „Analysis of the parameters of a lossy coaxial cable for cable fault location“. In 2011 8th International Multi-Conference on Systems, Signals and Devices (SSD 2011). IEEE, 2011. http://dx.doi.org/10.1109/ssd.2011.5767393.

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Marsico, Maria R., Alicia Gonzalez-Buelga, Simon A. Neild und David J. Wagg. „Interaction Between In-Plane and Out-of-Plane Cable Modes for a Cable-Deck System“. In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86590.

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When cables form part of larger structures, the interaction between the cable and structure can lead to complex vibration response. In this paper we consider a simplified one degree of freedom cable-stay bridge model, representing a bridge deck movement, which interacts with a particular cable in the structure. An analytical model is developed based on a modal decomposition and averaging to find the boundary at which nonlinear effects create out-of-plane vibration response. Experimental verification is carried out using a testing technique called real-time dynamic substructuring. This approach allowed the numerical model parameters to be varied, so the effects of parameter variation on the cable response could be studied. Small changes in the bridge deck frequency were found to lead to significant changes in the cable vibration response. This was investigated by computing stability boundaries for the out-of-plane modes, and good agreement was found between the experimental and analytical results.

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Gungor, Gokhan, Sergio J. Torres-Mendez, Baris Fidan und Amir Khajepour. „Estimation of Anchor Points for Fully-Constrained and Redundant Planar Cable Robots“. In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37057.

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Cable-based robots generally perform better than other parallel robots with rigid links in terms of wider workspace and higher acceleration of end effector because of lightweight of robot links. Cable based robots allow an easy mounting and remounting for outside applications; however, this requires a precise assembly of components at the cable anchor points. In this study, firstly a parametric model is developed for estimation of position errors of anchor points for fully-constrained and redundant planar cable robots. A novel method based on inclusion of virtual cables facilitates the linear separation of the uncertain parameters from the input-output signals for redundant planar robots. In addition, the adaptive law (parameter estimator) updates the estimated parameters using the least squares algorithm. The simulation results show that the least squares method reduces the time of estimation convergence compared to gradient algorithms. Furthermore, the least squares method allows simple persistent excitation signals to estimate parameters.

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Barbieri, Nilson, Gabriel de Sant' Anna Vitor Barbieri, Marcos José Mannala und Mayara Calado. „Identification of Modals Parameters of Transmission Line Cable“. In 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-1952.

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Longval, Jordan M., und Clément Gosselin. „Dynamic Trajectory Planning and Geometric Design of a Two-DOF Translational Cable-Suspended Planar Parallel Robot Using a Parallelogram Cable Loop“. In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85138.

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This paper presents a trajectory planning approach and an analysis of the geometric design parameters for a planar cable-suspended translational parallel robot based on a parallelogram cable loop. The cable robot produces purely translational movements in a planar workspace. Furthermore, this special architecture only requires two actuators which makes it fully actuated. From the dynamic model of the robot, general algebraic inequalities are obtained that ensure that the cables remain taut. A general elliptic trajectory is then defined and substituted into the algebraic inequalities to obtain conditions on the geometrical design parameters that ensure that the cables are always in tension. In addition, a special trajectory-specific oscillation frequency emerges and enables the end-effector to dynamically move beyond the boundaries of the static workspace, thus expanding the workspace of the mechanism. Finally, a kinematic sensitivity index is studied in order to assess the influence of the parallelogram structure on the rotational stability of the mechanism.

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Kamali, Kaveh, Ahmed Joubair und Ilian A. Bonev. „Optimizing Cable Arrangement in Cable-Driven Parallel Robots to Improve the Range of Available Wrenches“. In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85905.

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This paper presents a new method for maximizing the range of wrenches that a cable-driven parallel robot (CDPR) can apply on its moving-platform. In this problem, the optimization parameters are the attachment positions of the cables to the moving platform. It is supposed that the attachment points are selected from a set of candidate points. The combinatorial nature of this problem makes it non-trivial and complicated, especially when the whole workspace of the robot is considered in the optimization problem. In this paper, it is shown that this cable arrangement problem can be represented mathematically by a zero-one multi-dimensional knapsack problem. Then, a core concept method is used to find the optimal solution. As an example, the proposed method is applied to a 6-DOF CDPR with eight cables. Experimental results show that the proposed approach can efficiently solves the cable arrangement problem in polynomial time.

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Miyasaka, Muneaki, Mohammad Haghighipanah, Yangming Li und Blake Hannaford. „Hysteresis model of longitudinally loaded cable for cable driven robots and identification of the parameters“. In 2016 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2016. http://dx.doi.org/10.1109/icra.2016.7487596.

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Khan, Zulfiqar A., Yakup Bayram und John L. Volakis. „Hybrid s-parameters for modeling cavity-cable-PCB interactions“. In 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4395616.

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