scholarly journals Nano-electronic Simulation Software (NESS): a flexible nano-device simulation platform

2020 ◽  
Vol 19 (3) ◽  
pp. 1031-1046 ◽  
Author(s):  
Salim Berrada ◽  
Hamilton Carrillo-Nunez ◽  
Jaehyun Lee ◽  
Cristina Medina-Bailon ◽  
Tapas Dutta ◽  
...  
2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Wenqian Zhang ◽  
Shuhai Fan ◽  
Jiawei Xiong ◽  
Siyu Chen

Aiming at production environment and operation design in manual materials handling which often overlook workers’ physiological factors and cause fatigue, even work-related musculoskeletal disorders, we construct a biobjective model based on economics and ergonomics. In the model, two objectives include functions about handling time and energy consumption. Based on the openness of IGRIP/ERGO simulation software combined with MATLAB, we design and develop the interactive simulation platform, where program language can be automatically generated. Then, we analyze the case about handling operations in an automobile brake pad manufacturing company, and the number of input materials and process scheduling are taken as research objects. Finally, the results show that the win-win optimal solution can be usually obtained between productivity and ergonomics for decision makers according to the proposed biobjective model. Moreover, the case study demonstrates that the interactive simulation platform can be devoted to providing the solution for modern production operation directly and conveniently, which can make the production environment and operation design in accordance with ergonomics.


Author(s):  
Salim Berrada ◽  
Tapas Dutta ◽  
Hamilton Carrillo-Nunez ◽  
Meng Duan ◽  
Fikru Adamu-Lema ◽  
...  

2013 ◽  
Vol 670 ◽  
pp. 119-122
Author(s):  
W.G. Du ◽  
Y.Y. Guo ◽  
C. Zhao

Machining with five-axis equipment can offer manufactures many advantages, including dramatically reduced setup times, lower costs per part, more accurate machining and improved part quality. While in five-axis machining, the tool axis changes frequently, even the most experienced engineers are difficult to judge the correctness of its tool path. So in this paper, taking five-axis machine tools as the prototype, the process of building NC simulation platform was introduced by using simulation software VERICUT. After that, it introduced simulation operations, verifying the simulation platform and data simulation function. Finally, the correctness of the simulation was verified by machining experiments. Researching CNC machining process on the VERICUT platform, the research results were used in five-axis machining simulation of integrated impeller and it improved both the process capacity and efficiency of the integrated impeller greatly. This method obtained in this paper could eliminate the colliding and interference phenomenon during test cut, reduce costs, improve the efficiency of programming and shorten the manufacturing period.


2014 ◽  
Vol 945-949 ◽  
pp. 2846-2849
Author(s):  
Hui Xu ◽  
Zhong Dong Yin

This research proposes a new parallel-type short-circuit current limit adjustment device. A unified power quality control strategy is provided to solve the typical issues of the power system. Meantime,when short-circuit fault occurs in the load side,short-circuit current can be limited to minimal range. The parallel-type short-circuit current limit adjustment device simulation model is established based on PSCAD/EMTDC simulation software. By doing some experiments on the parallel short-circuit current limit adjustment device, the correctness and validity of the proposed main circuit topology and control strategy is validated.


Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1455 ◽  
Author(s):  
Mohamad El Hariri ◽  
Tarek Youssef ◽  
Mahmoud Saleh ◽  
Samy Faddel ◽  
Hany Habib ◽  
...  

The reliable performance of the smart grid is a function of the configuration and cyber–physical nature of its constituting sub-systems. Therefore, the ability to capture the interactions between its cyber and physical domains is necessary to understand the effect that each one has on the other. As such, the work in this paper presents a co-simulation platform that formalizes the understanding of cyber information flow and the dynamic behavior of physical systems, and captures the interactions between them in smart grid applications. Power system simulation software packages, embedded microcontrollers, and a real communication infrastructure are combined together to provide a cohesive smart grid cyber–physical platform. A data-centric communication scheme, with automatic network discovery, was selected to provide an interoperability layer between multi-vendor devices and software packages, and to bridge different protocols. The effectiveness of the proposed framework was verified in three case studies: (1) hierarchical control of electric vehicles charging in microgrids, (2) International Electrotechnical Committee (IEC) 61850 protocol emulation for protection of active distribution networks, and (3) resiliency enhancement against fake data injection attacks. The results showed that the co-simulation platform provided a high-fidelity design, analysis, and testing environment for cyber information flow and their effect on the physical operation of the smart grid, as they were experimentally verified, down to the packet, over a real communication network.


2012 ◽  
Vol 246-247 ◽  
pp. 1199-1203
Author(s):  
Xiu Qin Li ◽  
Xi Liang Yang

The simulation has become an important means to evaluate and analysis performance of the design during the study of switch structure and scheduling algorithm. Simulation software for switch structure and scheduling algorithm exist at present all defective in inheritable and scalability. In order to evaluate the performance of PPS system accurately and intuitively, the simulation platform CICQ-PPS-SIM for PPS system was designed. We used Object-oriented technology to analysis, design and implement the platform. CICQ-PPS-SIM overcame the problems of simulation software existing like lack of scalability, poor operational and so on, provides an effective means to evaluate the performance of switch system.


1992 ◽  
Vol 281 ◽  
Author(s):  
J. Piprek ◽  
P. Krispin ◽  
H. Kostial ◽  
K. W. BÖer

ABSTRACTThe occupation of deep-level defects in semiconductors is investigated by delta-doping such impurities at a specified distance from the metallurgical boundary within Schottky diodes. Capacitance-voltage characteristics are analyzed using ID device simulation software. These characteristics change significantly depending on the deep-level energy and the sheet position. This new approach to deep-level analysis is applied to Schottky diodes on MBE-grown n-GaAs with a planar titanium doped sheet. At moderate Ti concentrations the well-known Ti acceptor level near Ec-0.2 eV governs the electrical properties. In addition, two other types of Ti defects are found.


2013 ◽  
Vol 423-426 ◽  
pp. 2946-2949
Author(s):  
Cheng Hua Li ◽  
Shan Shan Li

The applicability of the interference of mixed traffic of VISSIM is inspected indexed by the rate of interference, delay and the average speed of right turn vehicles. This paper took Jiaoda east road and Xueyuan south road intersection (Hereinafter referred to as Sidaokou) as an example, established the simulation platform. Then the actual running condition of vehicles and simulation results were compared. The error between the measured values of each index and simulation values are in the range of 20%, which shows that it is applicable to use the simulation software VISSIM to simulate the interference between mixed traffic at signalized intersection.


2013 ◽  
Vol 392 ◽  
pp. 656-659
Author(s):  
Ting Yu ◽  
Zhao Yu Jin ◽  
Ying Yun Sun ◽  
Jing Huai Lin ◽  
Tian Jiao Pu

Large-scale wind power integrates in the grid to provide clean energy; however, it has a negative impact on the stable operation of the grid. To analysis the effect of wind power on frequency control, we need the help of simulation software. But, there has no frequency control mathematical model of wind farm in simulation software available for the user to choose. So this paper designs and establishes a frequency simulation platform, which provides the frequency control mathematical model of wind farms, hydroelectric power plants and thermal power plants. It can not only evaluate the impact of wind power fluctuations on frequency control, but also can quantitatively analysis of the system reserve capacity, as well as AGC performance monitoring function.


Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 680
Author(s):  
Cristina Medina-Bailon ◽  
Tapas Dutta ◽  
Ali Rezaei ◽  
Daniel Nagy ◽  
Fikru Adamu-Lema ◽  
...  

The modeling of nano-electronic devices is a cost-effective approach for optimizing the semiconductor device performance and for guiding the fabrication technology. In this paper, we present the capabilities of the new flexible multi-scale nano TCAD simulation software called Nano-Electronic Simulation Software (NESS). NESS is designed to study the charge transport in contemporary and novel ultra-scaled semiconductor devices. In order to simulate the charge transport in such ultra-scaled devices with complex architectures and design, we have developed numerous simulation modules based on various simulation approaches. Currently, NESS contains a drift-diffusion, Kubo–Greenwood, and non-equilibrium Green’s function (NEGF) modules. All modules are numerical solvers which are implemented in the C++ programming language, and all of them are linked and solved self-consistently with the Poisson equation. Here, we have deployed some of those modules to showcase the capabilities of NESS to simulate advanced nano-scale semiconductor devices. The devices simulated in this paper are chosen to represent the current state-of-the-art and future technologies where quantum mechanical effects play an important role. Our examples include ultra-scaled nanowire transistors, tunnel transistors, resonant tunneling diodes, and negative capacitance transistors. Our results show that NESS is a robust, fast, and reliable simulation platform which can accurately predict and describe the underlying physics in novel ultra-scaled electronic devices.


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