For the requirements of high-speed signal transmission has been increasing. Optical communication system is the way to solve the demands. The 980-nm high-power laser modules are used for optical communication system as the power of the amplifier for long distance communication. The QPSFE is used for coupling between the high-power 980nm laser diodes and the single mode fiber. This research established an on-line inspection system to inspect the fiber endface during the polishing process which is applied on a bare fiber polishing machine. The system we developed is to detect the fiber endface for QPSFE fabrication process. In this paper, we simply use couple charge device (CCD) as a position sensor to detect the grinding situation. The system had been successfully achieved on-inspection purpose, therefore; it will be the key technique toward the automatic bare fiber polishing system.

No description available.

The inspection of power lines and associated hardware is vital to ensuring the reliability of the transmission and distribution network. The repetitive nature of the inspection tasks present a unique opportunity for the introduction of robotic platforms, which offer the ability to perform more systematic and detailed inspection than traditional methods. This lends itself to improved asset management automation, cost-effectiveness and safety for the operating crew. This dissertation presents the development of a prototype industrial brachiating robot. The robot is mechanically simple and capable of dynamically negotiating obstacles by brachiating. This is an improvement over current robotic platforms, which employ slow, high power static schemes for obstacle negotiation. Mathematical models of the robot were derived to understand the underlying dynamics of the system. These models were then used in the generation of optimal trajectories, using nonlinear optimisation techniques, for brachiating past line hardware. A physical robot was designed and manufactured to validate the brachiation manoeuvre. The robot was designed following classic mechanical design principles, with emphasis on functional design and robustness. System identification was used to capture the plant uncertainty and a feedback controller was designed to track the reference trajectory allowing for energy optimal brachiation swings. Finally, the robot was tested, starting with sub-system testing and ending with testing of a brachiation manoeuvre proving the prospective viability of the robot in an industrial environment.

No description available.

Submitted by Adriely Bruce (adriely_bruce@hotmail.com) on 2016-12-16T15:23:35Z No. of bitstreams: 1 Dissertação - Rafael Normando Cunha.pdf: 2634755 bytes, checksum: 1a601e8e730d9bca00432b2e7038ac0f (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2016-12-22T13:36:58Z (GMT) No. of bitstreams: 1 Dissertação - Rafael Normando Cunha.pdf: 2634755 bytes, checksum: 1a601e8e730d9bca00432b2e7038ac0f (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2016-12-22T13:39:39Z (GMT) No. of bitstreams: 1 Dissertação - Rafael Normando Cunha.pdf: 2634755 bytes, checksum: 1a601e8e730d9bca00432b2e7038ac0f (MD5) / Made available in DSpace on 2016-12-22T13:39:39Z (GMT). No. of bitstreams: 1 Dissertação - Rafael Normando Cunha.pdf: 2634755 bytes, checksum: 1a601e8e730d9bca00432b2e7038ac0f (MD5) Previous issue date: 2013-12-17 / Agência de Fomento não informada / Software Product Lines enable organizations to develop a number of similar products in the same application domain, which reduces development time and maintenance cost, and increases productivity. Software product line specifications need to be evaluated for improving software. In this context, software inspections aims do guarantee complete, consistent and correct artifacts finding defects in early stages in software lifecycle. In this work, we propose SPLIT (Software Product Line Inspection Technique), which is a set of modelbased inspection techniques for evaluating software product line specifications. A feasibility study was conducted for comparing SPLIT against a defect type-based inspection approach. The object of the feasibility study was a Twitter client software product line specification created for the experiment. The results indicated that the set of techniques found a greater number of defects than a defect type-based inspection approach. A second empirical study was conducted for comparing SPLIT against a defect type-based inspection approach using a real software product line for mobile robot vehicles. This study aimed to verify whether the set of techniques fits real world life-cycle development. The second empirical results supported the feasibility study in which SPLIT found a greater number of defects than a defect type-based inspection approach. Thus, software product line quality assurance can be improved using SPLIT for detecting defects in early stage of development. / Linha de produto de software permite que organizações desenvolvem um número similar de produtos específicos em um mesmo domínio de aplicação, reduzindo o tempo de desenvolvimento e o custo de manutenção, e aumentando a produtividade. Especificações de linha de produto de software necessitam ser avaliadas para aumentar a qualidade do software. Neste cenário, inspeções de software visam garantir que os artefatos estejam completos, consistentes e corretos ao encontrar defeitos em estágios iniciais do ciclo de vida de desenvolvimento. Neste trabalho, é proposta a SPLIT (Software Product Line Inspection Technique), um conjunto de técnicas de inspeção baseada em modelos para avaliar especificações de linha de produto de software. Um estudo de viabilidade foi conduzido para comparar a SPLIT com uma abordagem de inspeção baseada em tipos de defeitos. O objeto do estudo de viabilidade foi um cliente de Twitter desenvolvido para a execução do experimento. Os resultados indicaram que o conjunto de técnicas SPLIT encontrou um número maior de defeitos que uma abordagem de inspeção baseada em tipos de defeitos. Um segundo experimento foi conduzido para comparar a SPLIT com uma abordagem baseada em tipos de defeitos usando uma linha de produto de software real para veículos robóticos móveis. Este estudo visou verificar se o conjunto de técnicas se adaptam ao ciclo de vida de desenvolvimento real. O segundo experimento corroborou o resultado do estudo de viabilidade ao encontrar um número de defeitos maior que uma abordagem de inspeção baseada em tipos de defeitos. Com isso, a garantia da qualidade em linhas de produto de software pode ser melhorada ao utilizar a SPLIT para encontrar defeitos em estágios iniciais do desenvolvimento.

Les travaux présentés dans ce mémoire portent sur l’étude et le développement d’une méthode de mesure d’épaisseur et de reconstruction 3D d’objets en verre creux, dans le cadre d’une application de contrôle industriel sur ligne de production. Les techniques de mesure d’épaisseur de parois transparentes sont actuellement très limitées par leur faible tolérance angulaire sur l’orientation des surfaces. Elles nécessitent une rotation de l’article devant le capteur, donc une manutention contraignante. De plus, les surfaces considérées étant spéculaires, les techniques de numérisation standard ne fonctionnent pas. Nous avons développé deux méthodes basées sur l’observation des réflexions d’une source diffuse ponctuelle sur les deux surfaces de la paroi de l’objet. Une observation simple à l’aide d’une caméra implique une ambiguïté entre l’orientation et la position de chacune des deux surfaces. Notre première méthode consiste à utiliser des informations de polarisation pour lever cette ambiguïté. Des résultats expérimentaux, obtenus avec un ou plusieurs points source témoignent de la faisabilité de la mesure. La seconde méthode consiste à utiliser une seconde caméra, associée à un dispositif optique spécifique. Ceci permet de trianguler directement les points d’incidence sur les deux surfaces. De plus, la source peut être étendue verticalement, de manière à augmenter la taille de la zone inspectée. Les résultats obtenus avec cette seconde technique attestent de la possibilité d’une mise en oeuvre industrielle. / The work presented in this thesis focuses on the study and development of a method for measuringthe thickness and reconstructing the 3D shape of glass containers, within the frame of an industrialon-line quality monitoring. Measuring thickness techniques of transparent objects are currently limited by their lack of toleranceregarding the surface orientation at a given reflection point. A rotation of the article in front ofthe sensor is thus required, which adds complexity to the mechanical handling of the item beingmeasured. Moreover, conventional scanning techniques do not work well on specular surfaces.We developed two methods based on the observation of the reflections by both surfaces of the wallof a given item of a diffuse, point light source. Imaging these reflections with a plain camera leavesan ambiguity between the orientation and position of each surface. Our first approach uses light polarization to remove this ambiguity. Experimental results, obtainedwith one or several point sources have demonstrated the feasibility of the measure. The second approach uses a second camera, associated with a specific optical design, whichenables a mere triangulation of the incident points on the two surfaces. Moreover, the light sourcecan be vertically extended to increase the size of the inspected area. The results obtained with thissecond technique show that industrial implementation is feasible.