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How to design an optimal mixed H2/H∞ robust FID controller for a complex control system is of great practical importance, but it is still an open issue. From the perspective of evolutionary algorithm, this paper formulates this issue firstly as a typical constrained optimization problem by minimizing a weighted objective function consisting of the robust stability performance, disturbance attenuation...
In general cases, particularly in developing countries, the weakness of the national electric grid is due to overloading, high temperatures and bad weather. In such systems, the interruptions of electricity supply can take several hours to days. To prevent the power deficit, consumers can use diesel generators that are very noisy and highly polluting. But, as alternative, this paper proposes a combination...
This paper presents a methodology for optimizing the size of energy storage system (ESS) for maximizing the capture of energy regenerated by a train. Besides, minimization of energy consumption from the substation, in order to obtain a return on investment, has also been explored. A standard structure of rail transit system has been used here for analysis. The optimization process takes into account...
In this paper, the application of genetic algorithm (GA) to energy management of isolated power system is discussed. A method to realize the simultaneous optimization of configuration and operation with emergency generators (EGs) in a hospital is proposed as an example. The simultaneous optimization of configuration and operation needs search of enormous combinations, which is generally considered...
The paper describes the direct torque control of the switched reluctance motor drives. A new engineering way for reducing electromagnetic torque ripples in the switched reluctance motor drives was shown. For this purpose, the constructed 3D model which was formed using the Kompas 3D program is presented in the paper. The results of the optimization and simulation using Matlab/Simulink are given.
The short reference differential chaos shift keying (SR-DCSK) is a variant of DCSK which increases data rata and enhances energy efficiency without extra complexity. However, the advantages of bit error ratio (BER) performance of the SR-DCSK over the conventional DCSK is not notable even if the optimal length of reference signal is applied. In this paper, we propose an improved SR-DCSK scheme where...
This paper presents the design and the optimization of interstitial microcoaxial applicator antenna for microwave ablation treatment (MWA) of breast cancer. MWA is proposed as a treatment for breast cancer in initial or intermediate stages and involves the application of an electromagnetic field that generates a temperature increase in the cancerous tissue. A model and the validation of microwave...
This paper tackles the problem of periodic review of perishable inventory of extremely short shelf life characterized by age differentiation. The daily demand of items is highly stochastic which is differentiated by age, that is, the demand on young items is not the same as the demand on older items. This demand pattern can be found in applications such as oncology, transplantation and traumatology...
Today's trends towards automation and robotics, fueled by the emerging Industry 4.0 paradigm shift, open up many new kinds of control and optimization problems. At the same time, advances in 3D simulation technology lead to ever-improving simulation models and algorithms in various domains, such as multi-body dynamics, kinematics, or sensor simulation. This development can be harnessed for Simulation-...
Driver-in-the-loop and different human-machine goal consistency should be considered when designing driver-AFS interactive steering control system. In this paper, a novel design approach, namely dynamic game theory is used for the modelling of shared steering control between driver and AFS. Linear Quadratic dynamic optimization approach is used to derive the non-cooperative Nash, non-cooperative Stackelberg,...
How to design an effective and efficient load-frequency controller (LFC) for a multi-area interconnected power system to improve its power quality is a challenging issue. In order to deal with this issue, this paper presents a novel distributed fractional-order PID (DFOPID) control method for the load-frequency control of each area by using an adaptive population-based extremal optimization (APEO)...
Exponential increase and global access to read/write memory states in quantum computing simulation limit both the number of qubits and quantum transformations that can be currently simulated. Although quantum computing simulation is parallel by nature, spatial and temporal complexity are major performance hazards, making this an important application for HPC. A new methodology employing reduction...
Incorporating cognitive radio technology into wire-less sensor networks enables the sensor nodes to use the idle channels to meet their communication demands, but the spectrum sensing process inevitably brings extra energy consumption. Since cognitive sensor nodes are generally low-powered with limited batteries, we consider a novel spectrum sensing scheme with combined clustering and censoring for...
The emergence of 5G wireless communication calls for new paradigms to satisfy the individuation and diversification of users' demands. In this paper, we construct the multicast groups under the guidance of user interest and then allocate the subcarriers and power to these groups in orthogonal frequency division multiple (OFDM) networks. Specifically, in order to maximize the social utility related...
With the accelerated urbanization process in China, more and more attention has been paid to residential environment quality. How to improve atmospheric quality, accelerate pollutant emission and reduce resource consumption by rationalizing layout is one of the most important issues in developing a healthy community. Based on the method of fluent flow field simulation, this paper chooses and analyzes...
It is suggested to use the topological task for select the placement of distributed generation source. A topological task can not be solved by methods of functional analysis, because it is a problem with variable parameters. The algorithm of modeling for solving the topological task is proposed. The solution of the topological problem is significantly influenced by the parametric features of the object,...
Dual-active-bridge (DAB) DC-DC isolated converter is widely used in many applications e.g. power supplies, transportations and renewable power systems. In this paper, general modulation characterization and optimization of DAB converters have been analyzed and advanced modulation methods are proposed. Simulations and experiments are implemented to verify the effectiveness of the proposed modulation...
The end-to-end energy efficiency (EE) are analyzed in a linear multihop relay networks with Chase Combining based Hybrid Automatic Repeat reQuest (CC-HARQ). We first set up a tractable expression of EE for multihop scenario from a crosslayer perspective. Then the optimum energy and frame length that maximize EE are provided in tractable expressions which are valid for an arbitrary number of nodes...
With the aid of double-controller design concept and particle swarm optimization (PSO) algorithm, an internal model control (IMC) scheme with two-degree-of-freedom (TDF-IMC) based on PSO algorithm (PSO-TDF-IMC) is proposed, which is capable of controlling large time-delay processes. This method takes integral time absolute error (ITAE) index as objective function and uses PSO algorithm to optimize...
The sensor-source geometry is one of the key factors affecting the performance of a distributed acoustic source localization system. In this paper, an approximate optimal routing method is proposed by minimizing the determinant of the Cramer Rao Lower Bound (CRLB) for the source location estimate. At first the sensors are equally distributed in the test field, the problem is relaxed to a combinatorial...
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