Today, loading machine tools in small and middle sized enterprises is mainly done manually by machine operators. Low quantity and high variance in mechanical components production require a high flexible automation pr...
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ISBN:
(纸本)9781538611227
Today, loading machine tools in small and middle sized enterprises is mainly done manually by machine operators. Low quantity and high variance in mechanical components production require a high flexible automation process which is usually not achievable for contract manufacturers. This paper describes a concept of a mobile robot platform - consisting of a collaborative robot, gripping technology and an intuitive task-based programming system - which enables small and medium-sized enterprises (SME) to temporary automate the machine loading process.
This paper improves existing series topologies of MOSFETs with single gate driver and a new topology suitable for multiple series MOSFETs is proposed. In the topology, two small charging capacitors are used to drive M...
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ISBN:
(纸本)9781728133997
This paper improves existing series topologies of MOSFETs with single gate driver and a new topology suitable for multiple series MOSFETs is proposed. In the topology, two small charging capacitors are used to drive MOSFET instead of the traditional bias power supply, which can simplify topology and increase the power density and reliability. Then the static and dynamic states of the circuit are analyzed and the working principle is expounded. After that, LTspice simulation is used to prove the feasibility of topology. Finally, the driving circuit and parameter design are presented, and the experimental results are given to verify the performance of the circuit.
Security of Linux systems is important field of research. One of the fundamental securing principle is way how to save log files effectively. In this paper, we present its possible enhancement how to obtain knowledge ...
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ISBN:
(纸本)9781538611227
Security of Linux systems is important field of research. One of the fundamental securing principle is way how to save log files effectively. In this paper, we present its possible enhancement how to obtain knowledge from log files distribution. We specify it by proven epistemic resource oriented logical formulas. We design an appropriate laboratory environment, where we configure hosts to log files distribution between each.
The main idea in this paper is to implement a distributed primal-dual interior-point algorithm for loosely coupled Quadratic programming problems. We implement this in Julia and show how can we exploit parallelism in ...
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ISBN:
(纸本)9781538644447
The main idea in this paper is to implement a distributed primal-dual interior-point algorithm for loosely coupled Quadratic programming problems. We implement this in Julia and show how can we exploit parallelism in order to increase the computational speed. We investigate the performance of the algorithm on a Model Predictive Control problem.
In design optimization, an improper initial design can make the final design converge to a local optimum and increase the time required to obtain an optimal design. Therefore, it is important to determine an appropria...
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In design optimization, an improper initial design can make the final design converge to a local optimum and increase the time required to obtain an optimal design. Therefore, it is important to determine an appropriate initial design. This paper proposes a novel technique to obtain a proper initial design, using a dot sensitivity analysis. The obtained initial design is close to the optimal design, in most cases, because it is obtained based on a sensitivity analysis. Thus, it can prevent the problems caused by improper initial design. A design optimization problem is tested to demonstrate the validity of the proposed method.
The proof system ∀-Exp+Res formally captures expansion-based solving of quantified Boolean formulas (QBFs) whereas the (QBFs) proof system captures QBF preprocessing. From previous work it is known that certain famili...
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Electrodermal activity is one of the most studied psychophysiological markers of the functioning of the autonomic nervous system and it has been applied in psychophysiological research for over 100 years. However, ele...
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ISBN:
(纸本)9781450365895
Electrodermal activity is one of the most studied psychophysiological markers of the functioning of the autonomic nervous system and it has been applied in psychophysiological research for over 100 years. However, electrodermal activity measurement has not been largely applied in clinical research until now due to it being limited to laboratory environment before the entry of wearable devices. The aim of this study is to speed up research and development of electrodermal activity applications based on wearable device measurements. In order to reach that goal an ecosystem model is proposed that includes open data, open source, application programming interface and software development kit as central components. To illustrate the ecosystem model a case study of Moodmetric is presented.
The need to know how to code for university graduates has become crucial if they are to achieve their goals of employment after graduation. Post-graduation jobs increasingly require some understanding of how programs ...
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ISBN:
(纸本)9781538672020
The need to know how to code for university graduates has become crucial if they are to achieve their goals of employment after graduation. Post-graduation jobs increasingly require some understanding of how programs work and are developed. The project reported here used HTML and JavaScript to introduce students to the core structure of coding. It uses code that produces a visual result which helps non-IT students overcome their fear of coding. Using an online HTML and JavaScript editor to create a 2D game for a mobile deice introduces students to some basic programming skills in a fun and creative way. This paper reports on a project that tracked before and after sentiment towards learning coding skills. It shows a shift in sentiment from a fear of coding to a better understanding of the potential of coding to produce creative outcomes. However, despite the shift in sentiment across the project, there was still too much reliance on external help students were not able to initiate programming without some assistance. This suggests, along with the method described in this paper, other methods should also be explored.
The forecasting of the wind power, which is very important for the stability and reliability of the grid, is challenge for the uncertainty and randomness of the wind power. This paper proposed a forecasting model of w...
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ISBN:
(纸本)9781728133997
The forecasting of the wind power, which is very important for the stability and reliability of the grid, is challenge for the uncertainty and randomness of the wind power. This paper proposed a forecasting model of wind power based on recurrent neural network (RNN) with long short-term memory (LSTM). With the help of the sequence-dependence characteristic of RNN, the proposed model can be trained by smaller data sets but achieve more accurate forecast of wind power. LSTM is involved into the model to improve the oblivion and avoid gradient disappearance. The experimental results verify the effectiveness of the proposed forecasting model.
This paper proposes a method for optimizing the shape of a conductor and ferromagnetic material in an eddy current system. Continuum sensitivity of the eddy current system and the level-set method are used in this opt...
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ISBN:
(纸本)9781728133997
This paper proposes a method for optimizing the shape of a conductor and ferromagnetic material in an eddy current system. Continuum sensitivity of the eddy current system and the level-set method are used in this optimization. The continuum sensitivity formula of the eddy current system is derived using the material derivative concept of continuum mechanics and an adjoint variable method. The specific continuum sensitivity formula of the eddy current system, for which the objective function is system power, is also derived. The level-set equation is adopted to advance the shape of the material interface, coupling the velocity term in the continuum sensitivity formula. A numerical example is demonstrated to validate the shape optimization method.
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