Trajectory Prediction of Three Dimensional Forming Tube Based On Kalman Filter

This article focuses on the prediction of forming trajectory and process optimization during the forming process for the variable curvature tubes. Firstly, through cubic B-spline interpolation, the geometric characteristics of the axis of the target tube are obtained. An overall tube is "separated and then integrated", and the relationship between geometric parameters and processing parameters is established to obtain the initial process parameters. Based on the Extended Kalman Filter (EKF) algorithm, the motion model and observation model of tube forming using simulation are presented section by section, and the relevant calculation and analysis are carried out. The forming trajectory has been predicted and the processing parameters are optimized during the processing process, in which the effectiveness of the processing optimum scheme is illustrated.

Universal Model for the Cogeneration of Heat, Power and Char in a Decoupled Pyrolysis and Gasification Process for Techno-Economic Assessment

Present work aims to present a complete and detailed heat-mass balance data, streams elemental and species composition as crucial input data for Techno-Economic Assessment (TEA). Combined heat, power and char (CHPC) generation in decoupled pyrolysis and gasification processes ensures a highly efficient, reliable and sustainable economic use of biomass. Innovative process model based on simultaneous heat-mass balance with the elemental (C, H, O) and species (CO, H2, CO2, CH4 and H2O) composition of each stream provides reliable data with a general/average variability in a range of ±10% and ±5% for the main outputs. Thermodynamic calculations verified not only the concept but also a numerical range of the results. Comparisons with recently published, scientific and data from technology providers, prove their general applicability and consistency. TEA cases, presented in a complete and detailed table, allow selection of the relevant calculation basis providing reliable data for doubtless evaluation at investors/entrepreneurs striving for a successful business model.

Comparative Study on CFD Turbulence Models for the Flow Field in Air Cooled Radiator

This paper compares the performances of three Computational Fluid Dynamics (CFD) turbulence models, Reynolds Average Navier-Stokes (RANS), Detached Eddy Simulation (DES), and Large Eddy Simulation (LES), for simulating the flow field of a wheel loader engine compartment. The distributions of pressure fields, velocity fields, and vortex structures in a hybrid-grided engine compartment model are analyzed. The result reveals that the LES and DES can capture the detachment and breakage of the trailing edge more abundantly and meticulously than RANS. Additionally, by comparing the relevant calculation time, the feasibility of the DES model is proved to simulate the three-dimensional unsteady flow of engine compartment efficiently and accurately. This paper aims to provide a guiding idea for simulating the transient flow field in the engine compartment, which could serve as a theoretical basis for optimizing and improving the layout of the components of the engine compartment.

ЕКСПЕРИМЕНТАЛЬНЕ ДОСЛІДЖЕННЯ ВПЛИВУ РЕЖИМІВ РУХУ РОБОЧОГО МАСИВУ ТА ОБ’ЄМУ ЗАПОВНЕННЯ ЄМКОСТІ НА ІНТЕНСИВНІСТЬ ВІДДІЛЕННЯ МЕТАЛЕВИХ ДЕТАЛЕЙ ВІД ЛИВНИКІВ

Determination of the main rational technological parameters of processing of metal parts of the lock "lightning" in the tensile machine with complex spatial movement of the working capacity, in particular, experimental study of the influence of modes of motion of the working array and the volume of filling the capacity on the intensity of separation of the metal parts of the lock "lightning" relevant calculation dependencies. An experimental study was carried out by observing the change in the number of machined parts during the technological process of separating the metal parts of the lightning lock from the gullies in a galvanizing machine with a complex spatial movement of the working capacity. Further mathematical processing of the obtained results is carried out with determination of rational technological parameters. The rational mode of movement of the working array and the rational level of filling the capacity of the working array are determined, which provide the highest productivity when performing the technological operation of separating metal parts from the casters. The regularities of the influence of the modes of motion of the working array on the intensity of the technological operation of separating the metal parts of the lock "lightning" from the gullies are established. The dependence between the level of filling the capacity of the working mass, the speed and the performance of the performance of this technological operation is determined. Getting the appropriate settlement dependencies. The directions for realization of rational technological parameters of operation of separation of metal parts of the lock "lightning" from gullies in the car with complex spatial movement of the working capacity, which provide the maximum productivity of performance of the technological operation, were obtained.

Design and Implementation of Ethical Values Created Curriculum Development to Improve Mobile Security

Medicinal imaging has assumed a key job in the direction of MIS strategies to expand the specialists' spatial introduction and help with the distinguishing proof of basic life systems and pathology. Current intransigent perception frameworks are promising. Be that as it may, they can barely meet the necessities of high goals and continuous 3D perception of the careful scene to help the acknowledgment of anatomic structures for safe MIS techniques. In this exploration we present a by and large relevant calculation which plans to furnish specialists with constant 3D perception of complete organ misshapen utilizing 3D optical fix pictures with constrained perspectives and a solitary preoperative MRI or CT filter. The proposed calculation is stretched out to remake the inside structures of an organ by just testing on the outside surface. Reconstructing is persuaded by our exact perception that the round consonant coefficients comparing to mutilated surfaces of a given organs lie in lower dimensional subspace in an organized lexicon that can be gained from a lot of agents preparing surfaces. The proposed methodology recognizes a structured scanty portrayal of every 3D surface. This enables the method to recreate discretionary organ misshapen utilizing exceptionally restricted watched information with high exactness.

The Potential of Descriptive Building Specifications as an Alternative to Detailed Normative Calculations

Energy performance calculations are stipulated by law in most European countries. Thereby, different calculation schemes have been developed in the past years in different countries. The physical processes in buildings were simplified in terms of normative calculation routines in most of these schemes. A major idea behind these simplifications was to enable different stakeholders (practitioners, engineers, and architects) to issue energy certificates without being simulation experts. Moreover, the simplifications needed to be described thoroughly in corresponding guidelines to ensure and facilitate the comparability of the energy performance of different buildings. However, neither of these objectives can be considered to be fully met. Regarding the former, the normative calculation procedures increased in complexity in the past years, so that the issuing of energy certificates requires not only the stakeholder’s expertise but also a comprehensive knowledge of the standards that form the calculation method. Regarding the latter, recent research efforts revealed that many guidelines do not fully cover every aspect of the calculation procedures and the assumptions regarding required input data. Thus, the comparability of energy certificates has to be strongly questioned, as a number of relevant calculation parameters are dependent on the interpretation of the corresponding issuer.Given this background, alternative approaches to building performance evaluation would be of interest. Previous approaches by different researchers suggested so called prescriptive indicators, which can be derived by basic building data (for instance, geometry and thermal quality of the building envelope components). This contribution is based on this concept. In the framework of a master thesis, a number of prescriptive indicators were considered. These indicators were derived for a set of sample buildings. In a parallel effort, energy certificates (encompassing Key Performance Indicators KPIs) were calculated for the sample buildings. It is clear that the prescriptive indicators cannot act as a 1:1 replacement for KPIs in terms of a numeric value. However, their usefulness can be expressed by the relation of the prescriptive indicator and the corresponding KPIs of a building. Thus, the results of the described calculation efforts were ranked. Subsequently, the lists of buildings ranked by the different indicators were compared in order to identify prescriptive indicators, which result in the same or at least similar ranking as the normative key performance indicators. Within this contribution, the suggested prescriptive indicators, the sample buildings, and the results of the analysis are presented and discussed.

Marine Search and Rescue of UAV in Long-Distance Security Modeling Simulation

Long-distance safety of Marine search and rescue using drones can improve the searching speed. The current method is based on the long distance security classification of UAV.The degree of accuracy is low. A long-distance security modeling approach based on ArduinoMiniPro’s Marine search-and-rescue applying UAV is proposed. The method puts the fault tree analysis and relevant calculation for risk identification into use. The main factors affecting the safety of unmanned aerial vehicle (UAV) are long-distance searching and rescuing. The experimental results show that the proposed method can effectively build modeling for the long-distance safety of the Marine search and rescue UAV

Conversion of geodetic coordinates into flat (2-dimensinal) coordinates PL-UTM for the purposes of navigation

This paper presents mathematical interdependences in converting geodetic coordinates into flat rectangular coordinates and inverse transformation recommended in the Ordinance by Prime Minister on the State System of Spatial References. It especially presents formulas contained in works by M. Hooijberg (1997) Practical Geodesy and R. Kadaj (2001) Projection Formulas and Parameters of Coordinate Systems. G-1.10.In order to illustrate uses of the presented formulas relevant calculation examples based on the reference ellipsoids WGS 84 and GRS 80 are included.

tudi Kelayakan dan Perancangan Aplikasi Pencarian Buku pada Katalog Perpustakaan Menggunakan Rocchio Relevance Feedback

A catalog is a register of all bibliographic items found in a library. A bibliographic item can be any information entity. The library catalog has evolved from manual, website based catalog to mobile catalog. Unfortunately, there are still many obstacles in the results of library catalog search, including the relevant results of documents based on input from the user. The purpose of this research is to make the library catalog based on mobile application in android using relevant calculation used rocchio relevance feedback method. Terms— android, library, library catalog, mobile, rocchio.

The Development of Candling Module Code in Module In-vessel Degraded Analysis Code MIDAC and the Relevant Calculation for CPR1000 During Large-Break LOCA

The occurrence of Fukushima has increased the focus on the development of severe accident codes and their applications. As a part of Chinese “National Major Projects,” a module in-vessel degraded analysis code (MIDAC) is currently being developed at Xi’an Jiaotong University. The developing situation of a candling module and relevant calculation for CPR1000 for large break loss of coolant analysis (LOCA) are presented in this paper. The candling module focuses on the melting, moving, and relocation of the melting core materials and necessary thermal hydraulic information. MIDAC’s LOCA accident calculation results of Chinese pressure reactor 1000 (CPR1000) cover the melting mass distribution, peak temperature, and hydrogen generation. The results have been compared with MAAP. Through comparison, the candling module of MIDAC proved to be able to predict the moving trend of the molten material mass relocation in the reactor pressure vessel.