Showing papers in "Journal of The Chinese Institute of Engineers in 2018"
TL;DR: The proposed EGT-based PC scheme achieves higher network efficiency, spectral efficiency, and energy efficiency and makes use of the evolutionary game theory (EGT) model to adaptively adjust the transmitted power level of the users which helps in mitigating user interference.
Abstract: The demand for mobile uplink traffic has increased significantly in the past few decades with the development of the Internet of Things (IoT) and mobile Internet. This has subsequently imposed chal...
18 citations
TL;DR: A wavelet packet transform (WPT)-based adaptive predictor to cancel the jamming signal for global positioning system receivers and significantly outperforms one existing WPT-based anti-jamming scheme.
Abstract: We propose a wavelet packet transform (WPT)-based adaptive predictor to cancel the jamming signal for global positioning system receivers. In addition, a new adaptive threshold selection algorithm,...
15 citations
TL;DR: In this paper, the authors used computational fluid dynamics (CFD) to study jet mixers and found that the shortfalls of the previous CFD models were the result of the lack of computational resources.
Abstract: Jet mixing tanks are important in chemical processes. Over the past two decades or so, computational fluid dynamics (CFD) has been employed to study jet mixers. The shortfalls of the previous CFD m...
14 citations
TL;DR: In this article, a new 3D failure mechanism was proposed to analyze the stability of the tunnel face driven by a closed shield in cohesive-frictional soils, which consists of a sing...
Abstract: This article proposes a new 3D failure mechanism to analyze the stability of the tunnel face driven by a closed shield in cohesive-frictional soils. The failure mechanism consists of a sing...
13 citations
TL;DR: The resistance of asphalt pavements to traffic loading and environmental deterioration depends on the mechanical coupling of the selected bitumen-aggregate material, bitumenaggregate interfacial p....
Abstract: The resistance of asphalt pavements to traffic loading and environmental deterioration depends on the mechanical coupling of the selected bitumen–aggregate material, bitumen–aggregate interfacial p...
13 citations
TL;DR: The problem of insufficient driving performance in existing electric vehicle (EV) powertrain systems is solved in this paper by presenting the EV as the reference object and the optimal variable parameters are determined by multiple simulation analysis.
Abstract: The problem of insufficient driving performance in existing electric vehicle (EV) powertrain systems is solved in this paper by presenting the EV as the reference object. The system model of the EV is established based on the powertrain system layout, technical parameters, and performance requirements, and the vehicle dynamic property and pure electric drive economy are evaluated. On the basis of the component models and total outputted power, the driving range is considered as the optimization target, and the input simulation parameters are considered as the optimized variables. Therefore, the optimal variable parameters are determined by multiple simulation analysis. In view of the test bench results, the rationality of the parameters of the simulation result is verified. Generally speaking, with the flexible configuration of the designed powertrain system and the optimized parameters of dynamic programming, the automobile performance can be improved.
13 citations
TL;DR: A new method is introduced to design static output tracking controllers for a class of non-linear polynomial time-delay systems based on the projection of the controlled system and the associated linear reference model that it should follow over a basis of block-pulse functions.
Abstract: In this paper, a new method is introduced to design static output tracking controllers for a class of non-linear polynomial time-delay systems. The proposed technique is based on the projection of the controlled system and the associated linear reference model that it should follow over a basis of block-pulse functions. The useful properties of these orthogonal functions such as operational matrices jointly used with the Kronecker tensor product may transform the non-linear delay differential equations into linear algebraic equations depending only on parameters of the feedback regulator. The least-squares method is then used for determination of the unknown parameters. Sufficient conditions for the practical stability of the closed-loop system are derived, and a domain of attraction is estimated. The implementation of the proposed method is illustrated on a double inverted pendulums benchmark as well as a two-degree-of- freedom mass-spring-damper system. The simulation results show the effectiven...
11 citations
TL;DR: The results show that the multiobjective cooperative optimization strategy can simplify the complexity of optimization problems and that themultiobjectives cooperative optimization method based on an approximate model is favorable for accuracy and efficiency, thereby providing a theoretical basis for the optimization of similar complex structures in practical engineering.
Abstract: To address multiobjective, multi constraint and time-consuming structural optimization problems in a vehicle axle system, a multiobjective cooperative optimization model of a vehicle axle structure...
10 citations
TL;DR: The experimental results show that the hadoop-based PrePost+(HBPrePost+) algorithm outperforms one of the best existing parallel methods of frequent itemset mining (PARMA) in terms of execution time.
Abstract: Frequent pattern mining is the most important phase of association rule mining process because of its time and space complexity. Several methods have attempted to improve the performance of associa...
10 citations
TL;DR: Use of self-adaptive GSA together with democratic PSO technique has been found to provide two distinct advantages over standard PSO and GSA, namely better capability to escape from local optima and faster convergence rate.
Abstract: A realistic and optimum design of reinforced concrete structural frame, by hybridizing enhanced versions of standard particle swarm optimization (PSO) and standard gravitational search algorithm (GSA) is presented in this paper. PSO has been democratized by considering all good and bad experiences of the particles, whereas GSA has been made self-adaptive by considering a specific range for certain parameters like ‘gravitational constant’ and ‘set of agents with best fitness value.’ Optimal size and reinforcement of the members have been found by employing the technique in a computer-aided environment. Use of self-adaptive GSA together with democratic PSO technique has been found to provide two distinct advantages over standard PSO and GSA, namely better capability to escape from local optima and faster convergence rate. The entire formulation for optimal cost design of frame includes the cost of beams and columns. In this approach, variables of each element of structural frame have been considered...
9 citations
TL;DR: The improved ESO sufficiently eliminates the disturbances on the speed control system of the aerial camera lateral swing and exhibits better performance.
Abstract: This study proposes an improved extended state observer (ESO) to eliminate the effects of disturbances on the speed control system of an aerial camera lateral swing. First, a mechatronics model of ...
TL;DR: A modular single-phase grid-tie inverter system equipped with a power management and remote monitoring interface and integrated with a home energy management system (HEMS) exhibits flexible power scaling, load sharing, and high reliability.
Abstract: To enhance the conversion efficiency and electrical reliability of the low-voltage fuel-cell (FC) power generation system, this paper proposes a modular single-phase grid-tie inverter system equipped with a power management and remote monitoring interface. In this system, each single power module is composed of three single-stage quasi-resonant (QR) flyback current-source inverters that are connected in parallel, and all the power modules are connected in parallel to achieve flexible power scaling and load sharing. The proposed grid-tie inverter system possesses a power management unit (PMU) and can be integrated with a home energy management system (HEMS). An experiment was conducted to verify the feasibility of the proposed concept, in which five power modules were assembled to form a 1-kW high-efficiency grid-tie inverter system, which was modulated through the PMU. The results showed satisfactory load-sharing characteristics between the parallel-connected power modules. The peak efficiency for...
TL;DR: An online secondary path modeling method in active noise cancellation based on an enhanced Filtered-X Least Mean Squares (FxLMS) algorithm, implemented on an Altera Cyclone II board, using less than 1% of the Field-programmable Gate Arrays’ board memory.
Abstract: This paper presents an online secondary path modeling method in active noise cancellation based on an enhanced Filtered-X Least Mean Squares (FxLMS) algorithm, implemented on an Altera Cyclone II b...
TL;DR: A robust liveness-enforcing supervisor is derived to make an unreliable S3PR live even if multiple types of resources break down, and the proposed method is illustrated by using an example.
Abstract: In an automated manufacturing system (AMS), resource failures are inevitable, which renders the existing deadlock control policies for AMSs without considering resource failures ineffective. For th...
TL;DR: In this paper, experimental and analytical results of 21 high-strength concrete tied columns under axial compression were presented, where each 1500-mm-tall column had a 500 by 500-mm section reinforced with 12 D25 longitudinal bars enclosed by perimeter hoops only, or perimeter hoops plus typical crossties or perimeter and intermediate hoops.
Abstract: This article presents experimental and analytical results of 21 high-strength concrete tied columns under axial compression. Each 1500-mm-tall column had a 500 by 500 mm section reinforced with 12 D25 longitudinal bars enclosed by perimeter hoops only, or perimeter hoops plus typical crossties, or perimeter and intermediate hoops. The concrete strengths of cylinder tests ranged between 55 and 99 MPa. The column compression tests showed that the longitudinal bars could be laterally supported by hoop corners or 135-degree seismic hooks of crossties, but not restrained by 90-degree hooks, which lost effectiveness after spalling of cover concrete. The proposed analytical approach used the existing Mander model and the Euler equation to determine the confined concrete strength and the buckling strength of longitudinal bars, respectively. With rational assumptions of confinement effectiveness and unsupported lengths, the proposed analytical approach can well predict the complete load-deformation respons...
TL;DR: A passenger flow network (PFN) is proposed for a subway system to capture the state dependencies among stations, and the analysis procedure for solving the station selection problem is developed.
Abstract: Passenger flow control on a limited number of stations is a common way to maintain the service of a subway system at a desired level Critical subway stations identification is the key for controll
TL;DR: A novel high voltage-gain boost converter with coupled-inductors that provides a much higher step-up ratio than conventional boost converter and the non-unity turns ratio helps reduce the voltage stress on the active switches and leads to lower conduction losses.
Abstract: This paper presents a novel high voltage-gain boost converter with coupled-inductors. The proposed converter consists of two pairs of coupled-inductors to collect energy in parallel and release ene...
TL;DR: A method is proposed based on Petri nets (PNs) to shorten a program development cycle and to ease the reuse of programs and it costs less to design a credible control program for robots by this method.
Abstract: As robot mission requirements become more complicated, it costs more and more time and energy to design and to debug a control system for robots. In this work, a method is proposed based on...
TL;DR: In this article, the modeling analysis of MEMS highly sensitive Capacitive Differential Pressure Sensor (CDPS) and also the development of a fabrication process for CDPS structures for aircraft are presented.
Abstract: This paper proposes the modeling analysis of MEMS highly sensitive Capacitive Differential Pressure Sensor (CDPS) and also the development of a fabrication process for CDPS structures for aircraft ...
TL;DR: The proposed Cauchy mutated cat swarm optimization with gravitational search operator (GS-CMCSO) is very suitable for pitch distribution optimization in the slow-wave structure of STWT and performs better than those on QPSO and CMCSO.
Abstract: Space traveling-wave tube (STWT) is a special power amplifier used in the space technology field to perform high-power conversion of signals; the pitch distribution is core parameter in slow-wave s...
TL;DR: In this article, a control design method for asymptotic stabilization, synchronization, and antisynchronization of a five dimensional chaotic memristor oscillator system is presented, and two cases are discussed.
Abstract: This article presents a control design method for asymptotic stabilization, synchronization, and antisynchronization of a five dimensional chaotic memristor oscillator system. Two cases are conside...
TL;DR: An integrated microgrid with a novel shunt active power filter (APF) using Elman neural network (ENN), which possesses dual functions of voltage and current harmonic compensation for microgrid under voltage harmonic propagation and nonlinear load, is proposed.
Abstract: An integrated microgrid with a novel shunt active power filter (APF) using Elman neural network (ENN) is proposed in this study. The microgrid consists of a storage system, a photovoltaic (PV) syst...
TL;DR: In this paper, a new spinning forming method for simultaneously producing two cone parts with big angle was developed, and a 3D finite element (FE) model of cone p... was generated.
Abstract: A new spinning forming method for simultaneously producing two cone parts with big angle was developed. The novel process with three passes was generated. The 3D finite element (FE) model of cone p...
TL;DR: In this paper, the authors analyzed the properties of blended polypropylene (PP) specimens and employed statistical analysis to develop a method for determining the virgin-recycled mixing ratio of a specimen.
Abstract: This study has analyzed the properties of blended polypropylene (PP) specimens and employed statistical analysis to develop a method for determining the virgin–recycled mixing ratio of a specimen. Morphological observations and analyses of thermal and mechanical properties were conducted to examine specimen properties. The results were incorporated into regression analysis to create relationship equations. The results revealed that the melt temperature ranged between 167 and 169 °C, melt index (MI) ranged between 7.59 and 18.36 g/10 min, viscosity decreased when the amount of recycled PP and the rotation speed increased, the maximum decomposition temperature decreased with an increase in recycled PP content and increased with the heating rate, activation energy (Ea) ranged between 39.91 and 12.07 kcal/mol, Young’s modulus ranged between 1121.1 and 1910.2 MPa, and impact strength ranged between 37.94and 49.41 J/m (no significant trends). Scanning electron microscopy showed unbroken fibrils distribu...
TL;DR: In this article, a model of a trailing arm in the front subframe was built using a 3D model of the tube hydroforming process, which may induce cracks in the tube material.
Abstract: This study investigated localized expansion in the tube hydroforming process, which may induce cracks in the tube material. First, a model of a trailing arm in the front subframe was built using th...
TL;DR: The proposed deadlock prevention method was net-structured and could be realized without any controller places, which provided a smaller size compared with existing literature results.
Abstract: A deadlock prevention method is proposed for a special class of a system of simple sequential processes with resources (S3PR), where two kinds of interrelated resources exist such that the processi...
TL;DR: A novel manipulation system for industrial robot manipulators based on a tablet PC with wireless communication provides flexibility for remote manipulation, and a graphical interface and several assistive tools are developed, allowing the operator to conduct tasks in a more intuitive way.
Abstract: Along with the progress in robot technologies, industrial robot manipulators nowadays have applied for more diverse and complex tasks. Consequently, the conventional manipulative devices, such as the teaching pendant and keyboard, become less suitable for task governing and teaching. Motivated by it, in this paper, we propose a novel manipulation system for industrial robot manipulators based on a tablet PC. With wireless communication, the proposed system provides flexibility for remote manipulation. Furthermore, a graphical interface and several assistive tools are developed, allowing the operator to conduct tasks in a more intuitive way. Experiments are executed to demonstrate the effectiveness of the proposed manipulation system, with its performance compared to conventional manipulative devices.
TL;DR: The improved RBF method can diagnose the fault section, classify the fault type and locate a fault accurately in ADN, which is significant to maintain system stability against realistic fault and network restore.
Abstract: The improved radial basis function (RBF) method utilizes an orthogonal regression matrix to produce an artificial neural network structure based on regularized least square The phase angle and amp
TL;DR: A combination of the Kinetic Battery Model (KiBaM) and the dual capacity network model is proposed to capture both the nonlinear state of charge variation and linear transient response to describe the battery dynamics of electric vehicles.
Abstract: Battery models are vital to the development of electric vehicles. Different models have been proposed over the years to describe the battery dynamics in various degree of detail. More detail comes ...
TL;DR: A control approach, which integrates the state-dependent Riccati equation (SDRE) method, the SDRE estimation, and the sliding mode control can obtain the main advantages of these methods.
Abstract: Diabetes mellitus has become more common in recent years, and an artificial pancreas is a feasible treatment to control blood glucose of diabetic patients by injecting insulin. The artificial pancr...