This paper presents an efficient Multiconductor Shielded Cable model, for conducted and radiated coupling, developed for circuit applications. In the case of radiated coupling, the interaction of the external incident field is modeled by equivalent voltage and current generators placed on shield only. The model works in frequency and time domain with linear and non-linear loads, respectively. Different applications are presented, for validation and physical interpretation. Finally, we will discuss the effect of the connection of the voltage limiter on the induced voltages.

In this paper a modified adaptive robust composite control scheme for fully-constrained Cable-driven robots with elastic Cables is presented here. At first, an adaptive control algorithm based on sliding mode control method is introduced for rigid robots using internal force concept to ensure that all Cables are remained in tension through the whole workspace. Then, the dynamic equations are turned into singularly perturbed form to develop the adaptive controller of rigid robots to be used for robots with elastic Cables. To improve the stability and robust performance of the system as an achievement of the paper, a correction term is added to the adaption law of rigid robots and the stability analysis of the system is conducted using the Lyapunov theory. Finally, while the simulation results are given for intended robot with elastic Cables, performance of the proposed algorithm against the uncertainty of dynamic parameters is proved and by comparing the performance of the proposed control scheme in this paper with those related to the initial robust adaptive controller a remarkable improvement in the accuracy of the desired path tracking confirmed.

Progressive collapse is a continuous spread and magnification of localized failure in structures, caused by an accidental load, resulting in a cascade of failure affecting a large portion of the structure. Although alternate path method is the most widely used method to increase the structural robustness of bare frame structures against progressive collapse, it should be further developed for other structures, and especially Cable stayed bridges as they are highly sensitive to dynamic impact loading. This paper demonstrates modelling and analysis of a typical Cable stayed bridge through two important analytical procedures, i.e., nonlinear static and nonlinear dynamic. Furthermore, the response of the structural model is discussed for multiple types of Cable loss cases. Two different progressive collapse patterns are identified for nonlinear static and dynamic procedures as the dynamic unloading function is considered in the dynamic analysis procedure. The results also indicate a decrease in the possibility of failure progression of the Cable stayed model when the location of the failed Cables is closer to the pylon.

In this paper, vibrational response of a variable-length Cable in longitudinal, lateral and torsional directions is analysed in a Cable robot using FE method. The flexibility of Cables has remarkable effect on positioning of the end-effector in Cable robots. Also considering the fact that the length of the Cables are time dependent in a dynamic Cable structure like robocrane, the numerical approaches are preferable compared to analytic solutions. To do so, the Cable is divided into finite elements in which the virtual work equation and Galerkin method can be implemented for the equations. Considering the stiffness matrix, the characteristic equations and Eigen values of each element can be defined. A simulation study is done in the ANSIS on a planar robocrane with2-DOFand also for a spatial case with 6-DOFthat is controlled by the aid of six variable-length flexible Cables in the space for two different types of solid and flexible end-effectors. Whole the Cable robot flexibility is analyzed simultaneously instead of separation calculation of each Cable. Not only all of the 3-D vibrating behavior of the whole structure is studied in this paper but also the lengths of the Cables are considered as variable. The vibrating response of mode shapes, amplitude and frequencies are extracted and analysed, and the results are compared for two case of solid and flexible end-effector which shows the effect of the flexibility in the position of the end-effector and the tension of the Cables in different situations.

Since a high percentage of faults in underground power Cables occur at the joint location of these Cables, identifying the Cable joints location is one of the most important challenges for power distribution companies. In this paper, a passive method to detect the underground electrical Cable joints based on the variations of magnetic fields at the ground surface is proposed. For this purpose, the magnetic fields above a long Cable containing a joint at the middle were first simulated using CST software. Simulation results showed that when scanning along the Cable, the magnetic field changes at the joint position which can be used for finding its location. Simulations were repeated for different joints located at different depths and in different soils. The advantage of the proposed method is that it does not need any external source and causes no interruption of electric power in underground power Cables.

Cable driven parallel manipulator (CDPM) is a special class of parallel manipulator in which the rigid extensible links are replaced by actuated Cables. It is necessary to take into consideration the Cable dynamics, i.e.; its mass, flexibility and curved shape for manipulating a long-span CDPM. These terms complicate governing equation of motion in a way that special tactic are applied for simulation and solving this problem. Flexibility and mass of Cables impose vibration and error in path trajectory planning. Effect of varying stiffness in precise performance of CDPM is surveyed. The Cables are modelled, in ADAMS software to illustrate the dynamical behaviours of the manipulator for comparison with the simulated results. Moreover, an algorithm is developed to study the effects of velocity and acceleration of the end-effector on the dynamics of CDPMs. Moreover it is shown that the evolutionary computing algorithms are so effective in solving complicated nonlinear dynamic path trajectory planning. Simulations for different trajectories of two CDPMs are included to demonstrate the efficiency of the proposed algorithm.

In this present, two pairs of Cable models were designed and tested to reproduce the induced vibration of stay Cables in a wind tunnel. Cable of Cable-stat stayed bridges are flexible structural members that have very low natural frequency and low intrinsic attenuation, Therefore, they are able to various vibrations such as wind vibration, wind-rain-induced vibration (RWIV), and earthquakes. Wind-rain-induced vibration has become one of the major concerns of bridge engineering. One of the ways to reduce the effects of wind and rain on Cable bridges has been examined is Cable aerodynamic specification and also one of the factors affecting the aerodynamics of the Cable is the formation of rainwater flow on the surface of the Cable. Therefore, spiral grooves were installed on the surface of the Cable to direct this flow of water to the bottom of the Cable. By testing two Cable models (without grooves and with grooves) in the wind tunnel with artificial rain flow, the effect of different wind speeds, and also different yaw angles, it was concluded that by creating spiral grooves to The Cable circumference can reduce the induced vibration caused by wind and rain, and the presence of these spiral grooves around the Cable eliminates low-frequency currents and thus reduces the amplitude of the induced vibration.

Electromagnetic Compatibility (EMC) analysis around High Voltage (HV) Cables is one of the important research problems, which several standards are published. In this paper, field simulation of HV Cable space based on finite element method (FEM) is proposed to identify Cable shielding effectiveness for a permitted distance of HV Cable and communication Cable proximity. FEM simulation method is performed for four situations including Shielded Cable or simple Cable (Cable with or without shield) for each type of HV and communication Cable in losses environment. As authors are aware there is no research report for the amount of proximity distance for HV Cable and communication Cable in losses spaces in spite of partial approach in cabling route. Finally, simulation result is evaluated by comparison with ICNIRP standard constraints. FEM simulation results are validated by FDM based simulation software(CST); Also electromagnetic field measurement for one-core medium voltage voltage labratory. Both of them illustrates the authentication of FEM modeling of and simulation results of the investigation.

Given the crucial role of Cable-stayed bridges and the challenging environmental conditions they often face, monitoring their health is essential. Stay Cables, which are the primary load-bearing elements in Cable-stayed bridges, are prone to damage due to environmental conditions. This paper investigated the performance of a method for evaluating the Cables of a Cable-stayed bridge using deck responses, compared to modal parameters. The technique utilized phase space analysis of deck displacement responses in the time domain under a specific moving load. This method was evaluated through a numerical simulation of the Manavgat Cable-stayed bridge. Damage scenarios with intensities of 20%, 30%, and 40% were applied to the cross-sections of the Cables. Damage identification was carried out by analyzing the changes in phase space topology (CPST) of the responses between the healthy and damaged models, along with two indicators, the modal assurance criterion (MAC) and modal flexibility. The results showed that the CPST index, unlike modal flexibility, identified the damaged Cables at all damage levels except for the back-stay Cables. The changes in the modal assurance criterion (MAC) at the 40% damage level were also very insignificant. This method can serve as a preliminary approach for fast and continuous monitoring of Cables in Cable-stayed bridges, minimizing traffic disruption while relying solely on the displacement responses of the deck.

Cable parallel robots usually require at least one additional actuator force in addition to degrees of freedom to keep the Cables in all directions in the workspace, which solves an optimization problem to determine the Cable tensile force. In this paper, a convex optimization problem is formulated on a parallel Cable robot using optimization conditions through the Karush-Kuhn-Tucker theory and the analytical-iteration method to achieve a minimum force vector of actuators that has less computational time and volume. Where the lower and upper limits of the optimization variables are applied, respectively, to ensure that the Cables remain in tension and take into account the saturation limit of the actuators or the rupture limit of the Cables (whichever is less), and equal constraints that the relationship between actuator force and force are expressed in the moving platform, defined by the force of the actuators as the sum of the basic solution and the homogeneous solution, -located in the null space of the transpose of Jacobin matrix. Comparison of the results of analytical-iterative solution presented in this paper with numerical algorithms of MATLAB software optimization shows that this method is much faster than these algorithms to converge to the optimal response.