Myoelectric pattern recognition is a useful tool for identifying the user’s intended motion. However, the inherent nonstationary properties of Electromyography (EMG) signals usually limited the use of real time commercial prostheses. These variations cause the degradation of myoelectric control performance and make it unstable over time, across subjects and sessions. In this study, this challenge is

This paper presents a new approach on one of the difficult domains between the boundaries of electronics and physics which is demanded in high-resolution applications such as DACs and ADCs. In the proposed differential architecture, a novel combination of two strings of resistors is employed to improve all possible random and gradient errors in a single resistor string. A proper design and construction

In recent years, the share of renewable energy sources (RES) in electricity generation portfolio has been growing, primarily supported by local and international energy policies to reduce the carbon footprint of the electricity sector. However, the large-scale integration of variable and uncertain RES has adverse effects on the power system operations. Therefore, the power system operators should apply

Dynamic energy management in smart grids courses to increase the system efficiency, not only does it decrease the economic costs, it also courses to reduce the environmental issues. One possible way to improve these benefits is to solve multiple smart grids problems simultaneously, which is called multi-area dynamic energy management. Demand-side management (DSM) is another way which has resulted in

Mapping complex hierarchical reconfigurable tasks on distributed architectures are classically an NP-hard problem. The current paper introduces a new software specification of these tasks with two-dimensional hierarchy levels DAGs. Each DAG is composed of multi-hierarchical subDAGs to specify graphs of complex software task graphs. We also propose a heuristic algorithm for mapping the new reconfigurable

Energy demand and conservation are two main concerns in distributed generation systems. Recently, lighting loads play a crucial role in these concerns. Nowadays, DC-fed LED lighting provides better solution. The conventional grid needs rectifier to provide DC results at high cost with low efficiency. Hence, a reliable autonomous PV-battery (APVB) system-fed LED load employing power management circuit

Using multiple feature descriptors simultaneously increases the accuracy of object recognition. Usage of dynamic coefficients, in other words, non-identical and proportional to the importance of each descriptor for each class, is an appropriate and efficient way to combine different feature descriptors. In this paper, a new and efficient structure is proposed that calculates these coefficients using

Underwater acoustic sensor network (UASN) is a vast network, in which the neighborhood of a transmitting node consists of many operating sensor nodes. By considering this as an advantage, we propose a hybrid automatic repeat request scheme for incremental cooperative communication (HARQ-INCC) in UASNs. The proposed scheme utilizes neighborhood sensor nodes during the instance of packet retransmission

In the article “Trajectory Tracking Control for Mobile Robots Using Reinforcement Learning and PID” by Shuti Wang, Xunhe Yin, Peng Li, Mingzhi Zhang and Xin Wang (Iranian Journal of Science and Technology, Transactions of Electrical Engineering. https://doi.org/10.1007/s40998-019-00286-4), there is an error in page 5. The erratum is to correct this error.

In laboratory-scale studies, researchers usually prefer to use diesel generator emulator, instead of real diesel generator due to its flexibility in parameters design. Using diesel generator emulator, the behavior of a real diesel generator is emulated by a voltage source converter with voltage and current control loops in d–q frame. In this paper, an inverter-based prototype of a simple diesel generator

For a stand-alone solar pump, Z-source inverter (ZSI) is being preferred because of its single-stage power conversion capability with buck-boost ability. As compared to traditional ZSI, series Z-source inverter (SZSI) reduces the voltage stress on capacitor and inrush current of the inductor significantly. In this paper, modes of operation of the SZSI for an induction motor load are explained. When

Temporary overvoltages (TOVs) typically caused by short-circuit faults and switching events can impose considerable damage on power system equipment. Furthermore, the penetration of distributed generations into the utility grids may intensify the problem arising from the TOVs. Despite recent research advancements, the TOV problems with current-source inverter (CSI)-based photovoltaic (PV) systems have not been

This paper deals with the maiden application of opposition-based interactive search algorithm (OISA) for a multi-area, multi-source power system having thermal, hydro and gas generating units. For realistic approach, physical constraints like boiler dynamics (BD), governor dead band (GDB) and generation rate constraint (GRC) have been considered in the thermal system, while the effects of GRC and GDB

In this paper, space vector pulse width modulation technique is proposed to reduce the common-mode voltage (CMV) of a five-phase three-level neutral point clamped inverter. The switching pulses are generated by tracking the reference vector in the complex hexagonal region. The switching state vectors are selected for switching pulse generation, which have minimum CMV level. Totally, it consists of

In this paper, a robust fractional-order PID (FOPID) controller is proposed to regulate islanded microgrid (MG) frequency. The considered MG is composed of a photovoltaic system, a wind turbine generation, a diesel generator, a battery energy storage system, the control unit, and loads. Some challenges in islanded MGs such as unpredictable variation in output power of renewable energy sources and model

Transformer is the most important part of any transmission system, so it is necessary to have the transformer in proper working order for uninterrupted power supply in the various locations in around the substations. Renewable energy replaces the conventional energy sources at the fast rate in various parts of the world. Due to high penetration of renewable energy, the installed transformers have observational

An analysis on automatic generation control (AGC) performance of an interconnected two-area hydro–hydro-power system model is presented in this paper subjected to dynamic control of damped oscillations in the presence of thyristor-controlled series compensation (TCSC) and the superconducting magnetic energy storage (SMES) unit. In real time, the load profile characteristics are un-deterministic in

Load control on the consumer side is termed as demand response. Demand response program (DRP) is emerging as a powerful tool for optimal load management in smart grid environment. In this paper, price-based DRP is applied to the system through the management of electricity prices. This management is based on demand elasticity, and system is expected to react enabling to accomplish the required load

This paper contributes to the fabrication of a snake-like robot in which the motion can be achieved through active wheels. The robot is constructed in such a way that its size can be increased and decreased, as well as it can undulate into a sine wave-like shape. The snake robot with wheels consists of chain of links attached to each other with the help of the passive prismatic and revolute joints

A new methodology to design an \({H}_{\infty }\) observer-based controller for discrete-time delayed systems subject to input saturation and \({\mathcal {L}}_{2}\)-norm disturbances is proposed, motivated by a benchmark problem. The stabilizing observer-based controller gains are obtained from an LMI formulation using a Lyapunov–Krasovskii functional, free weighting matrices, and an effective approach

In order to maintain the performance of the control systems affected by the fault, a fault-tolerant control (FTC) method is used. This controller tries to minimize the effect of the fault by modifying or correcting the control law of the system at the time of fault occurrence, so that the system can continue its normal operation. In this paper, we present an analytical method for controlling the actuator

Economic dispatch is the optimal scheduling for generating units with technical constraints. Combined heat and power economic dispatch (CHPED) refers to minimization of the total energy cost for generating electricity and heat supply to load demand. This planning model integrates heat and power energy to balance energy supply and demand, mitigate climate change and improve energy efficiency of sustainable

Chaotic response in the permanent magnet synchronous motor (PMSM) is an undesirable performance that may affect motor stability. This unexpected behavior occurs due to the disruption in the system parameters and load disturbance. To control this unwanted performance, it’s essential to introduce a robust method to determine the PMSM model parameters efficiently and expeditiously. Two PMSM models depending

Controlled and improved power quality is one of the fundamental and essential needs in any industry driven by electric power for optimal exploitation of resources. However, in power quality, some crucial problems have been recognized as harmonic distortion, interruption, sag, swell and transient. Out of these, sag and swell are predominantly seen and cause stern impact on the electrical devices or

This work presents a UWB balanced-to-unbalanced (BTU) power divider (PD) using coupled lines and an additional shunt TL in the middle. The even-mode and odd-mode ABCD parameters of BTU PD produce the required analytical design equations. Later, the use of stub-loaded coupled lines in the shunt transmission line enhanced the passband response. The structure is further optimised by varying the impedance

Energy efficiency analysis has been presented recently to minimize the energy consumption of buildings by designing the optimal structural parameters. Because of uncertain parameters incorporated in the energy analysis of a building, computationally effective methods are needed to model the uncertainties in the analysis. In this paper, a probabilistic multi-objective optimization method is proposed

Human errors in the maintenance operations of power transmission grids can be a critical factor in the failure of equipment. Equipment failures result in the reduction in reliability, customer satisfaction, and loss of power companies revenue. In order to prevent the failure of equipment due to human errors, the supervisors or head of the operating groups needs to monitor the actions continuously during

In this paper, a novel algorithm of trajectory tracking control for mobile robots using the reinforcement learning and PID is proposed. The Q-learning and PID are adopted for tracking the desired trajectory of the mobile robot. The proposed method can reduce the computational complexity of reward function for Q-learning and improve the tracking accuracy of mobile robot. The effectiveness of the proposed

This paper offers a new push recovery method to stabilize the quadruped robots walking on even terrains in the presence of external disturbance forces exerted on the body and legs of the robot. To avoid force sensors, a class of nonlinear observers is usually used to estimate all the forces that are applied to the leg joints. However, such estimations involve permanent errors in the case of fast varying

One of the essential strategies for restricting fault areas and reducing the number of affected customers in each outage is the simultaneous use of distribution automation systems and distribution generations (DGs). The use of DGs in the distribution networks affects the problem of remote control switch (RCS) placement. This study presents a new and practical method to determine the optimal location

This paper presents a fault detection method for induction generators using an unscented Kalman filter. In some applications such as wind turbine energy conversion systems, the induction generators experience oscillations caused by wind speed variation; therefore, the fault detection method should be able to detect fault in the presence of these oscillations. On the other hand, the induction generator

The magnetic levitation system requires a finely tuned controller to suspend a ball in the air. Any imbalance in the force balance condition might result in high fluctuations causing the ball to fall out of levitation. A hybrid tuning strategy based on successful levitation and minimization of vibrations has been designed and tested in real time. The proportional–integral–derivative controller has

This paper suggests heat transfer search (HTS) algorithm for solving complicated combined heat and power economic dispatch (CHPED) problem. The valve point effect, prohibited operating zones of conventional thermal generators and transmission loss are taken into consideration. The main objective of the CHPED problem is to minimize the total fuel cost for producing electricity and heat supplying to

The escalating in load demand prioritized the incorporation of additional renewable energy generation plants to the existing grid. In parallel, the necessity of reactive power balance and damping characteristics has advised the incorporation of flexible AC transmission system controllers to the existing power network. Hereby, the modern power system has been driven towards the much more composite system

This paper presents a planar ultra-wide band (UWB) sensing antenna accompanied with a monopole narrow band communicating antenna for interweave cognitive radio (CR) applications. The UWB antenna bandwidth covers the entire band specified for UWB applications (3.1–10.6 GHz). In addition to the varactor diode, a PIN diode is attached to the communicating antenna to expand the continuous frequency tuning

Fragile watermarking is one of the integrity protection mechanisms of multimedia data like image, video, and audio. A secure fragile image watermarking scheme, which is used to detect modification or tampering occurred on the image content, is devised in this paper. The projected scheme is developed into two steps, i.e., computation of secure authentication code/watermark bit from some of the most

This paper proposed a new methodology based on nature-enthused meta-heuristic optimization algorithm named as whale optimization algorithm (WOA), which can significantly envisage problems for simultaneous allocation of distributed generation (DG) and Distribution STATic COMpensator (DSTATCOM) in the radial distribution systems (RDS). In the proposed method, optimal locations and sizing of the DG and

To address the issue of voltage instability in the stand-alone microgrid structure, the paper presents control algorithm of energy storage system that can support the microgrid network at the time of sudden variation in load. The incorporation of battery module into the microgrid network strengthens the overall structure as it features high energy density. A control strategy is devised that establishes

Android application development has attracted the attention of many software developers as a mainstream software platform. Despite its interesting characteristics, there are a number of issues that result in developing applications with poor performance. Hence, it is very crucial to evaluate quality of Android applications, specially their robustness and responsiveness. Monkey testing is a traditional

This paper develops a new management framework for optimal operation of the hybrid AC–DC microgrids incorporating renewable energy sources and storages. Hybrid microgrid consists of two parts of AC and DC to supply the AC and DC loads, respectively. The power exchange capability of hybrid microgrids between the AC and DC parts makes it possible to reduce the total microgrid costs, effectively. To make

In this paper, a compact multiband CPW-fed monopole antenna is proposed. The designed antenna has a simple structure, which consists of a rectangular radiating patch with two symmetrically structured meandered line slots on both sides and a CPW-fed 50 Ω microstrip line. The designed antenna occupies only 23 × 23 mm2 size on a FR-4 substrate sheet which makes it a good candidate for wireless mobile

In this paper, a robust fault diagnosis method is proposed to estimate the states and faults simultaneously for a special class of Lipschitz nonlinear systems. In the model of system, fault is considered as a linear and additive function and disturbance as a nonlinear function coupled with the system states. An augmented system is constructed by forming a vector composed of states and faults, and a

Person re-identification is to search for a correct match for a person of interest across different camera views among a large number of impostors. While the approaches based on RGB modality have been widely studied to re-identify people, other modalities could be exploited as additional information sources, like depth and skeleton modalities. In this paper, we perform multi- and single-modal person

The deployment of batteries in the distribution networks can provide an array of flexibility services to integrate renewable energy sources (RES) and improve grid operation in general. Hence, this paper presents the problem of optimal placement and sizing of distributed battery energy storage systems (DBESSs) from the viewpoint of distribution system operator to increase the network flexibility. The

In wireless mesh networks, during handoff process, the mobile client needs to authenticate with other nodes. It is necessary to ensure secure communication between the mobile client and mesh nodes. However, using the conventional public key infrastructure requires a large overhead of storage requirement, since it has to deal with the management of the public key certifications. In the present paper

The paper proposes a method for microgrid optimal scheduling with renewable energy sources considering islanding constraints. The main purpose of the paper is to reduce the total operating cost of microgrid which includes the purchased energy cost from main grid and total local resources generation cost in grid-connected mode, and generation cost of local generators and renewable sources in islanding

In this work, an improved interactive multiple model-based smoothing algorithm is proposed for tracking and interception of a maneuvering target. The smoothed states are obtained at some past scan (\(k-N\)), but the target interception happens at the current scan. This helps to obtain the real-time benefits of the smoothing. Fixed-lag smoothing interactive multiple model algorithm is employed to follow

An ad hoc network is a set of distributed nodes dispersed within a relatively limited area with wireless connections. Based on available paths, hierarchical algorithms divide the network into two levels of hierarchy. The main goal of this paper is to design an optimum allocation algorithm in the wireless networks using a fuzzy logic (FL) algorithm, namely fuzzy-hierarchical algorithm. FL is adopted