Multifunctional Machine Research Articles

SOC chip based smart window curtain design

Relying on the rapid development of embedded systems, it becomes possible to integrate the system hardware into the same chip, and the system on chip SOC (System on Chips) is therefore birthed. This paper will be based on the SOC hardware and software co-design and verification, through the design of intelligent curtains for the specific implementation design of a kind of application in the al-in-one multi-functional machine motherboard design, the motherboard control core using SOC chip, integrated two MCU units, through the main control screen to display the control information to achieve the intelligent window switching conversion switching through the key such as manual mode, timer mode, light control mode. This design uses Keil as the software writing platform to realize the SOC master control system based on the on-chip bus interconnection. As well as this design can effectively reduce the degree of system cumbersomeness and provide smart window design ideas.

Enhancing Multi-Disease Diagnosis based on B-Continuity in Multifunctional Machine Learning Models

Enhancing Multi-Disease Diagnosis based on B-Continuity in Multifunctional Machine Learning Models

MECHANISED COAL EXPLOITATION IN THE "BREZJE" PIT OF THE "DJURDJEVIK" BROWN COAL MINE

In addition to the coal and electricity market and changing geopolitical circumstances, there are other sufficiently rational reasons for opening new underground mining facilities and modernizing existing mining methods.Significant limiting factors and influences, in complex mining-geological conditions, most significantly affect the possibilities of the mechanized way of mining brown coal. The "Brezje" pit is a part of the deposit where the mining-geological factors are complex and determined by the natural conditions of the deposit's genesis. Excavation methods and technologies in complex deposit conditions must be based on great flexibility and adaptability.The complexity of the tectonic structure in the "Đurđevik" pit justified the application of chamber excavation methods with borehole blasting, in various technical modifications and solutions. In all previous solutions, the degree of mechanization of the method was not significantly improved and all modifications of the chamber method were non-mechanized or semi- mechanized with a large participation of manual work, technology based on drilling and blasting, high risk of injuries, low utilization of deposits, unjustified economic effects of work. The aim of this paper is to give an adequate answer to the hypothesis "in the block structure of the deposit with pronounced tectonics, it is possible to reduce the unfavorable influence of the complex mining-geological factors of the deposit on the excavation method by choosing modern mechanization for underground exploitation". The mechanized chamber method of excavation is a conceptual solution for the possible application in complex conditions of the proposed flexible mechanization for work in the "Brezje" pit. The advantage of modern multifunctional mining machines is a high degree of adaptability to the elements of the coal layer with the use of different working mechanisms (tools) that can be changed in a very short time depending on the working phase of the process. Key words: Pit, complexity, factors, chamber method, flexible, multifunctional machine

Comprehensive sustainable development of a multifunctional machine: 3D food printer and didactic platform

ABSTRACT The development of machines explores the development of a manufacturing system. This perspective offers challenges adjacent to the materials, the product that wants to be manufactured, the technical considerations that must be covered during implementation and the manner of delivering the products to the user. This article addresses the design and development of machines, on the one hand the redesign of a multifunctional platform, and on the other hand a 3D food printer. The second is emphasised, since its main objective is to help the food problems that exist today. The design phases, aspects considered for its implementation such as food safety, the choice of the substrate, the functionality of the food, transportation and the pre- and post-processes required. In this manner, the selection and innovation of materials constitutes a primary source of innovation and research in the integral development of a 3D food printer. The main source of value of these both cases lie in customisation. The experiences of a multidisciplinary research team in the development processes are compiled and the design and creation process are shown, in order to contribute to deal with design and development to tackle fundamental problems of society.

Single-molecule tracking reveals the functional allocation, in vivo interactions, and spatial organization of universal transcription factor NusG

During transcription elongation, NusG aids RNA polymerase by inhibiting pausing, promoting anti-termination on rRNA operons, coupling transcription with translation on mRNA genes, and facilitating Rho-dependent termination. Despite extensive work, the invivo functional allocation and spatial distribution of NusG remain unknown. Using single-molecule tracking and super-resolution imaging in live E.coli cells, we found NusG predominantly in a chromosome-associated population (binding to RNA polymerase in elongation complexes) and a slowly diffusing population complexed with the 30S ribosomal subunit; the latter provides a "30S-guided" path for NusG into transcription elongation. Only ∼10% of NusG is fast diffusing, with its mobility suggesting non-specific interactions with DNA for >50% of the time. Antibiotic treatments and deletion mutants revealed that chromosome-associated NusG participates mainly in rrn anti-termination within phase-separated transcriptional condensates and in transcription-translation coupling. This study illuminates the multiple roles of NusG and offers a guide on dissecting multi-functional machines via invivo imaging.

Recent Patents on Intervention Auxiliary Device of Tracheal Stent

Background: The trachea is an essential part of the respiratory system. Lesions such as inflammatory granulomas cause Bronchial stenosis, which may be life-threatening. Tracheal stent placement is vital for treating airway stenosis, relieving dyspnea, and improving symptoms. Objective: This paper reviews the patents of tracheal stent placement and removal and auxiliary devices for diagnosis in recent years (from 2007 to the present) and introduces the characteristics and development of tracheal stent implantation, treatment, and assistive removal devices. In order to meet the need for more rapid operation and cause less harm to the human trachea, the structure of the tracheal stent surgical device needs to be improved continuously. Methods: This paper summarizes the research status of tracheal stent placement and removal and auxiliary devices for diagnosis and treatment in recent years and discusses the structural types and applications of tracheal stent auxiliary devices. Results: This paper summarizes the patent application of tracheal stent placement and removal and auxiliary devices for diagnosis and treatment at the present stage. This paper analyzes the main problems in its development and discusses the solutions to the problems and the future research direction. Conclusion: Tracheal stent surgical devices need further improvement in mechanical design, control strategy, etc. Tracheal stent surgical devices should be developed into universal, semi-automatic, and multi-functional machines. The relevant patents of the auxiliary device of the tracheal stent need to be developed.

Spatial and functional arrangement of Ebola virus polymerase inside phase-separated viral factories

Ebola virus (EBOV) infection induces the formation of membrane-less, cytoplasmic compartments termed viral factories, in which multiple viral proteins gather and coordinate viral transcription, replication, and assembly. Key to viral factory function is the recruitment of EBOV polymerase, a multifunctional machine that mediates transcription and replication of the viral RNA genome. We show that intracellularly reconstituted EBOV viral factories are biomolecular condensates, with composition-dependent internal exchange dynamics that likely facilitates viral replication. Within the viral factory, we found the EBOV polymerase clusters into foci. The distance between these foci increases when viral replication is enabled. In addition to the typical droplet-like viral factories, we report the formation of network-like viral factories during EBOV infection. Unlike droplet-like viral factories, network-like factories are inactive for EBOV nucleocapsid assembly. This unique view of EBOV propagation suggests a form-to-function relationship that describes how physical properties and internal structures of biomolecular condensates influence viral biogenesis.

Обзор разработанных систем быстросъемного устройства гидравлического экскаватора

Nowadays the hydraulic excavator is one of the leading multifunctional machines that are operated for multi-purpose goals and are also finding increasing use due to the widespread use of replaceable working bodies and working equipment. It is important to note that the use of a wide range of replaceable working equipment and working bodies of excavators not only increases the productivity of machines, but also the level of mechanization of work. The possibility of easy replacement of nozzles increases efficiency and minimizes the likelihood of damage or wear of equipment associated with manual replacement of nozzles. Besides, this will reduce the time for replacing the working body and speed up the work process.This article analyzes and reviews research: publications, patents; also provides an assessment of the quality of the proposed solutions for quick fastening systems on hydraulic excavators.

Phosphorylation of the PA subunit of influenza polymerase at Y393 prevents binding of the 5′-termini of RNA and polymerase function

The influenza A virus (IAV) polymerase is a multifunctional machine that can adopt alternative configurations to perform transcription and replication of the viral RNA genome in a temporally ordered manner. Although the structure of polymerase is well understood, our knowledge of its regulation by phosphorylation is still incomplete. The heterotrimeric polymerase can be regulated by posttranslational modifications, but the endogenously occurring phosphorylations at the PA and PB2 subunits of the IAV polymerase have not been studied. Mutation of phosphosites in PB2 and PA subunits revealed that PA mutants resembling constitutive phosphorylation have a partial (S395) or complete (Y393) defect in the ability to synthesize mRNA and cRNA. As PA phosphorylation at Y393 prevents binding of the 5′ promoter of the genomic RNA, recombinant viruses harboring such a mutation could not be rescued. These data show the functional relevance of PA phosphorylations to control the activity of viral polymerase during the influenza infectious cycle.

Technologies and materials for the assembly and installation of electrical elements

The article is devoted to the creation of a multifunctional machine for microsoldering and mounting of electrical components for the board. The problems of designing machine tools, existing analogues and prototypes are considered, as well as technologies and materials for fastening electrical elements and connecting them to each other are selected. Keywords machine tool manufacture, automation, analogues, soldering, electronics, electrical mounting, flux, solder, jumper

小型多功能农用底盘液压驱动系统的设计与试验

In view of the problems of the output power and operation, when the multi-function machine in hilly and mountainous areas driving in the field, the hydraulic control drive system of small multi-function agricultural hydraulic chassis is designed. The key components of the hydraulic drive system were selected and matched. The hydraulic system simulation model was established in AMESim simulation analysis software, and the dynamic analysis of the hydraulic system operation under different conditions is carried out. The simulation analysis results show that the hydraulic system has a large impact and vibration when it is started instantaneously, and the hydraulic system has smaller impact and vibration when it is started stably. It is consistent with the actual working state of the hydraulic chassis. Under the two starting controls, the maximum flow of the hydraulic pump is 50L/min, the motor torque is about 440N • m, and the motor stable pressure is 6Mpa, the motor speed is 96 r/min, which is within the bearing range of the hydraulic components. The simulation output parameters are basically consistent with the theoretical calculation results, and meeting the design requirements. The chassis performance test results show that the maximum crossing height of the chassis is 200mm, the crossing width is 300mm, the maximum deviation of high-speed straight driving is 2.57m, it can stably pass 20° slope, and the operation is stable and the steering is flexible. All performance parameters can better meet the requirements of chassis operation in hilly and mountainous areas.

The Extraction Method of Navigation Line for Cuttage and Film Covering Multi-Functional Machine for Low Tunnels

Aiming at the problem of low intelligence in the automatic navigation of the cuttage and film covering multi-functional machine for low tunnels, this study proposed a navigation line extraction method based on the improved YOLOv5s model, which can achieve the accurate extraction of navigation lines based on two planting methods of seedling transplanting and direct seeding. Firstly, we pre-processed the acquired images using inverse perspective transformation. Next, the Coordinate Attention and Ghost modules were applied to improve the YOLOv5s architecture, increasing the detection accuracy and speed of field targets. Finally, we extracted the feature points and fit the navigation lines based on the shape features of the targets using the geometric method. The experimental results showed that, compared with other algorithms, the accuracy of the proposed algorithm could reach more than 96%, the accuracy of navigation line extraction reached 98%, and the average detection time was 51 ms. The proposed method was robust and universal, and it can provide reliable navigation paths for the cuttage and film covering multi-functional machine.

The Low-Carbon Scheduling Optimization of Integrated Multispeed Flexible Manufacturing and Multi-AGV Transportation

As low-carbon and sustainable manufacturing becomes the mainstream development direction of the current manufacturing industry, the traditional heavy industry manufacturing enterprises in China urgently need to transform. For the heavy cement equipment manufacturing enterprise investigated here, there is a large amount of energy waste during the manufacturing operation due to scheduling confusion. In particular, the multispeed, multi-function machining and the transportation of multiple automated guided vehicles (multi-AGV) are the main influencing factors. Therefore, this paper addresses a novel low-carbon scheduling optimization problem that integrated multispeed flexible manufacturing and multi-AGV transportation (LCSP-MSFM & MAGVT). First, a mixed-integer programming (MIP) model is established to minimize the comprehensive energy consumption and makespan in this problem. In the MIP model, a time-node model is built to describe the completion time per workpiece, and a comprehensive energy consumption model based on the operation process of the machine and the AGV is established. Then, a distribution algorithm with a low-carbon scheduling heuristic strategy (EDA-LSHS) is estimated to solve the proposed MIP model. In EDA-LSHS, the EDA with a novel probability model is used as the main algorithm, and the LSHS is presented to guide the search direction of the EDA. Finally, the optimization effect and actual performance of the proposed method are verified in a case study. The experimental results show that the application of the proposed method in actual production can save an average of 43.52% comprehensive energy consumption and 64.43% makespan, which effectively expands the low-carbon manufacturing capacity of the investigated enterprise.

A review of sequential micro-machining: State of art approach

In the recent years, a sequential micromachining is attracting attention of researchers as it is most promising structured approach to combine and utilize advantages of different types of micromachining techniques which improves the productivity in manufacture of high precision micro features of most advanced components. Sequential micromachining is a most effective recent approach to fabricate micro features of sophisticated parts to minimize drawbacks of individual machining techniques if they were used individually. In general, this technique combines the individual micro machining techniques in a logical sequence stages to machine faster with rough cuts in the former and achieve final sizes and tolerances in the later stage. It is the opposite of hybrid micro machining in which two techniques are combined together. Sequential micromachining can be done on different machine tools or preferably on the same machine tool for better work settling accuracy, low production time and hence less rejection. Thus, it is leading to manufacture of multifunction machine centers to perform sequential micromachining on the same machine. Eventually its necessities this manufacture to be more flexible and dynamic to accommodate the future requirements in a better way. The main aim of this review paper is to give latest developments in the field of sequential micromachining processes, especially done with same machine tools and their usefulness in terms of advantages, productivity, and applications. It also gives emphasis on capabilities of future possible combinations of various techniques with high potential in this domain.

Testing of an Innovative Method for Overlap Friction Stir Welding (FSW) of 1 mm Thick Sheets of 5754 Aluminium Alloy, on Tilted Jig

A welding test piece has been made by the overlap friction stir welding (FSW) of 400 mm x 110 mm x 1 mm sheets of EN AW 5754 aluminium alloy, placed on a tilted jig, of the multifunctional friction processing machine, type MMPF.

Modelling and analysis of artificial intelligence approaches in enhancing the speech recognition for effective multi-functional machine learning platform – A multi regression modelling approach

Speech is considered as the fundamental aspect of communication between human being, speech recognition is stated as the overall process to convert the sound into corresponding text based on a specific language. The implementation of speech recognition has supported individuals, business and others in order to possess better communication and interaction so as to realise its objectives. This been regarded as the process of collating text message or in some form of meaning based on the input received from voice of another individual. The speech analytics is stated as the key part in the speech recognition as it converts the individual voice into digital form so as to store them and transmit it as and when required using computing equipments.The speech synthesis is considered as the reversal of speech recognition as they convert the data from the digitised format into voice which supports the users to listen quickly and easily.The application of speech recognition in organisation is confined in building more interactive virtual assistants, supports the customers in addressing their queries and offer solutions at quick span of time, furthermore organisations can use speech recognition to identify the individuals so that they can access classified information or reset their password etc. The enhanced development in the technology domain has deepened the importance of artificial intelligence in different areas of work and life, The implementation of AI in speech recognition supports the business and individuals in apprehending better services to the stakeholders and perform the task in an efficient manner. Hence, this study is focused in analysing the key determinates of using AI in speech recognition for effective multifunctional Machine learning platform using regression analysis.

A robust optimization approach for a cellular manufacturing system considering skill-leveled operators and multi-functional machines

One of the most critical issues in manufacturing systems is the operator management. In this paper, the operator assignment problem is studied within a cellular manufacturing system. The most important novelty of this research is the consideration of operator learning and forgetting effects simultaneously. The skill level of an operator can be increased/decreased based on the time spent on a machine. Moreover, the issues related to operators like hiring, firing, and salaries are considered in the proposed model. The parameters are considered to be uncertain in this model, and a robust optimization approach is developed to handle it. Using this approach, the model solution remains feasible (or even optimal) for different levels of parameter uncertainty. To verify and validate the proposed model, some numerical instances are randomly generated and solved using GAMS. A statistical analysis is also conducted on the results of the objective function values of linear and nonlinear models, followed by some managerial insights.

Technological and design principles of grain quality improvement, taking into account natural and climatic conditions

The new and known technological and design principles for improving the grain quality of wheat vigorous varieties, have been substantiated. The proposed seven technological principles show the features of the use of new wheat varieties and their cultivation according to the best forecrops in the natural climatic conditions of the Krasnodar Territory, the features of seed preparation for sowing, soil cultivation, plant protection, and the application of fertilizers and the organization of harvesting. In the block of four design features, new technical solutions are proposed for the design of ejection-slot sprayers for seed treaters and spraying devices, the advantages of multifunctional machine units in wheat cultivation technology are substantiated, a design and technological scheme of a grain-harvester separator, modernized for cleaning the combed heap, the advantages of wheat harvesting technology with a harvester, combing growing crops, are presented in comparison with traditional technology. The possibility of increasing the wheat grain quality of a vigorous variety “Olkhon” from the 3rd to the 2nd class, due to harvesting with rotary separators, post-harvest grain ripening and sorting by pneumatic separators (PSM) and sieves with oblong holes, has been proven. The work has been performed at the Kuban State Agrarian University in 2015-2020. The purpose of the article is to justify new technological and constructive principles for improving the wheat grain quality.

Joint optimization of preventive maintenance and production rescheduling with new machine insertion and processing speed selection

With the continuous improvement of machine performance, the multifunction machine has gradually become the first choice of many enterprises. Due to the usage and wearing of the machine, the successive operating times will decrease, while the consecutive maintenance durations will increase. Under these contexts, this paper focus on the joint optimization of preventive maintenance and flexible job-shop rescheduling with processing speed selection, and the dynamic arrival of the new machine is considered to enhance productivity. Specifically, (1) a bivariate maintenance policy considering processing speed is proposed to develop a reasonable maintenance plan for each machine; and (2) for evaluating, responding and optimizing the dynamic scheduling problem, a multi-objective optimization model, two rescheduling strategies and a bi-population cooperative evolutionary algorithm are separately constructed. In numerical experiments, the Taguchi method is first employed to set the parameters of the proposed algorithm. Second, the superiority of the proposed migration rescheduling strategy is demonstrated by comparing complete rescheduling strategy. Third, the effectiveness of the improved operators and the proposed algorithm is verified by algorithm comparison. Next, the benefits of the selectable processing speed are proven by comparing with the nominal processing speed. Finally, a sensitivity analysis on the processing speed optional range is performed.

Machine tool for assembling and mounting electrical components

The article is devoted to the creation of a multifunctional machine tool for microsoldering and mounting of electrical components of the board. Attention to the choice of engines, components of the machine tool and design is paid. The design of a soldering iron with pulsed heating, a mechanism for supplying a mixture of flux and solder, and a device for supplying wire jumpers are described. For clarity, determining the dimensions of the machine tool and its layout, a 3D model is created. Keywords machine tool building, automation, electronics, electrical mounting, engine, flux, solder, wire