Papers by Keyword: Design

Abstract: Legged vehicles are more flexible and mobile on difficult terrain, comparing to wheeled robots. Wheels are convenient on flat surfaces or specially prepared surfaces, wheeled vehicles being faster than legged ones. Also, wheeled robots are simpler in terms of mechanical architecture and control algorithms. But they do not perform well on uneven terrain, which is the case in real life, legged robots becoming more interesting to research and explore. This is why hybrid locomotion systems have been developed, in order to exploit the terrain adaptability of legs in rough terrain and simpler control as well as high speed associated with wheels. In this paper some design and kinematic aspects as well as hexapod locomotion of a small hybrid robot are presented.

Abstract: Bending causes of neck guitar, with negative economic effects are: technology - deviations from flatness, straightness, produced during processes due to faulty adjustment of machine tools, structure / material – the wood used in guitar structure leads to deformations that exceed the terms of rigidity due to anisotropy, mechanical - occurrence rheological phenomena (wood relaxation after being subjected to stresses during machining), physical - wood moisture, humidity and ambient temperature. Bending of guitar neck occurs either after completion of manufacturing processes when the guitar is not used (case I), or after a storage period without it being stressed (case II) and after a period of use (case III). The paper presents the concept of experimental stand and a set of procedures for measuring deformations of guitar neck obtained during the bending stress in three points (Figure 1). The criteria in the design of test bench were: providing mechanical boundary conditions to simulate real conditions; ensuring mobility measuring apparatus and data recording so that it can be investigated all the structural elements of the guitar; ensure stability of the tabs and the whole stand in order to avoid measurement errors; ensure handling and maintenance of subassemblies by using ergonomic dimensions, optimum materials and interchangeable parts.

Abstract: In some dangerous work environments unsuitable for manual operation or the occasions difficult to meet requirements of artificial vision, common machine vision is replaced for artificial vision. Machine vision can easily realize information integration. It is a basic technology of computer integrated manufacturing. To provide reference for continuously breaking through traditional environment design idea, this paper deeply studies machine vision technology and pattern matching algorithm, appropriately couples the two technologies and applies machine vision coupling matching technology in environment design. The results show the two technologies can be appropriately coupled and applied in environment design, introduce formation in space environment and make graphs, images and texts integrate with space environment.

Abstract: Crystal Eco-brick is a new ecological generality of decoration material. The shell is a key component of indoor stereo virescence concept combined with interior decoration materials. After crystal Eco-brick shell design had been finished, related technology research as well as development for the first, the second and third generations productions were done. The third generation of Crystal Eco-brick shell reached excellent characters such as strong universality, simple operation, high strength, more suitable for indoor afforestation.

Abstract: Multimodal interaction system is designed to reduce the burden of user awareness, providing convenient and efficient human-computer interaction environment. This paper attempts to combine reception robot and multimodal interaction system to broaden the research field of multimodal interaction system. By analyzing the characteristics of the reception robot itself, combined with the design principles of multimodal interaction system, we designed the reception robot’s multimodal interaction system. It has tried action, voice, appearance and other aspects on vision, auditory, tactile and other channels, has a certain significance.

Abstract: Mobile robots applications are demanding them to move in tight areas, to avoid obstacles, finding their way to the next location. In the case of wheeled robots, these abilities mainly depend on the wheels design. A mobile robot with omni-directional capabilities is very attractive because it guarantees a very good mobility in such cases, being able to move instantaneously in any direction from any configuration. These capabilities mainly depend on the wheels design. This paper provides some information about the mechanical design of an omni-directional mobile robot with modified Mecanum wheel, as well as about its control.

Abstract: Comparing to wheeled robots, legged ones are more flexible and mobile on difficult terrain, where wheeled robots cannot go. Wheels excel on flat surfaces or specially prepared surfaces, where wheeled robots are faster than legged machines. Also, wheeled platforms have simpler mechanical architecture and control algorithms. But they do not perform well when terrain is uneven, which is the case in real life, legged robots becoming more interesting to research and explore. Hybrid locomotion systems were developed to exploit the terrain adaptability of legs in rough terrain and simpler control as well as high speed associated with wheels. In this paper some information about the mechanical design and kinematics of a small hybrid locomotion robot are presented.

Abstract: Over the past years the target for waste recovery/ recycling has significantly increased in Romania, in according with the EU Directives. Nowadays, the competitive contexts of the current market lead the manufacturers to obtain novel and custom-made products using new technologies and quality raw materials. Such resources can be consisting of low-cost waste/by-products and in the processes of converting them into value-added products. On the other hand, the necessity for recycling waste is important under the strict European legislation. Regarding glass, the key sources of waste are container/ packaging glass, flat glass, electric and electronic equipments, domestic glass, E-glass, etc. According with source, waste glass can be: pre-and post-consumer waste glass. Now many recycling processes have been studied, developed and applied in industry. The major challenge is represented by creating of innovative and sustainable technologies and making it suitable. But recycling of glass is technologically more complicated than other waste (for example: paper). In case of glass, the most sustainable route is to use it for re-melting processes and obtaining a new glass. Glass is 100% recyclable but not all waste/cullet can be used for the manufacturing of any type of glass, due different chemical composition and the prohibitive shipping costs from collection points to glass factory. In this study, authors paid attention to the recycling process of soda-lime glass (post-industrial flat glass) and proposed the thermal embossing technique of glass, using glass slumping process, in order to obtain decorative products with aesthetic impact and functional role. An input image is prepared by applying different enhancement techniques, adjusting contrast, transferring into grayscale image in 256 shades of gray. The result image is transferred in Computer Aided Manufacture (CAM) software to refine the surface geometries and to obtain with rapid tooling the mould for glass. The method used for tooling fabrication consists of machining a block of suitable material with a Computer Numerical Controlled (CNC) machine which is known as a subtractive method. The next stage consists in applying of the heat treatment, using an electrical furnace. The major advantages of the embossing method for converting waste glass in value-added products is represented in the fact of use reduced energy comparing with the classic route of re-melting, possibility of obtaining bespoke products, ready to use in architectural and decorative fields. In addition, environmental benefits that results from processing waste glass are the reducing the raw materials (virgin) and the CO₂ emissions.

Abstract: Legs are the mostimportant elements for accomplishing human physical work includingtransportation or displacement. In this paper, a new mechanism for human legmotion assistance has been proposed for rehabilitation purposes. The structureof human leg and its motions have been used as inspiration for design purposes.For a simple control algorithm, the proposed mechanism for the legs mustgenerate an ovoid path of the foot, by uniform rotating of actuating crank. Themechanism must generate an approximately linear trajectory of foot duringpropulsion. The resulting linkage is a single degree-of-freedom (DOF)mechanism, which exemplifies the shape and movement of a human leg. Theactuator of the mechanism is located in the upper portion of the linkagesimilar to it in a human leg. The mechanism is simulated and tested to verifythe proposed synthesis. A 3D model of the proposed system has been elaboratedin Solid Works®, booth for design and simulation purposes. Simulation resultsshow that the proposed mechanism performs movements similar to those of a humanleg. Maple and Adams software packages are used to simulate and validate the usabilityof the mechanism. The proposed mechanism demonstrates that a one DOF closedloop mechanical linkage can be designed to the shape and movement of the bipedhuman walking apparatus. The proposed mechanism is suitable for the fabricationof legged robots. Proportions of the linkage are estimated utilizinganthropometric measures of the human leg.

Abstract: The article covers the problems of the shaping of the environment as well as living conditions in urban areas. Social needs, which are changing in time, make it necessary to adapt urban development to contemporary functional requirements. Such actions are particularly difficult in downtown areas where the interference concerns well located and preserved architectural and urban complexes. Directing attention to the areas of strict center of Czestochowa is not accidental. It is a city of importance to Polish history. It also belongs to the culture-creating sites for the nation. From so well preserved urban complexes there are required solutions arising from the uniqueness of the place and the role it fulfills – in this case: the city of pilgrimage, an academic center and a tourist destination. The search for strategy and tactics of quality raising of the downtown areas should cover both the urban context and historical and contemporary background of the city. The paper presents examples of attempts to acquire urban space in reference to the main urban assumption of the city of Czestochowa.