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Abstract. Automatic visual inspection has become an important application of pattern recognition, as it supports the human in this demanding and often dangerous work. Nevertheless, often missing abnormal or defective samples prohibit a supervised learning of defect models. For this reason, techniques known as one-class classification and novelty-or unusual event detection have arisen in the past years. This paper presents a new strategy to employ Hidden Markov models for defect localization in wire ropes. It is shown, that the Viterbi scores can be used as indicator for unusual subsequences. This prevents a partition of the signal into sufficient small signal windows at cost of the temporal context. Our results outperform recent time-invariant one-class classification approaches and depict a great advance for an automatic visual inspection of wire ropes.

Shuttle-based storage and retrieval systems (SBS/RS) are an important part of automated warehouses. SBS/RS are often used if throughput demand is high. SBS/RS can have significant advantages compared to crane-based automated storage and retrieval systems (AS/RS) with regard to throughput, energy efficiency and flexibility, depending on the application. Therefore, in the last ten years, the market for SBS/RS has grown considerably. Research of SBS/RS has not been as thorough as in the case of AS/RS. In particular, the development and investigation of the storage management policies class-based storage, sequencing of retrieval requests and warehouse reorganization and the resulting throughput increases and reductions in energy consumption during their application have considerable potential. This paper demonstrates the potential for throughput improvement in the application of these storage management policies. A simulation model is used to determine the throughput. The results show that significant optimization of the throughput is achieved by the application of the presented storage management policies.

Modern fiber ropes have several distinctive properties which predestine them amongst others for high dynamic applications in robotics. Beside their great breaking load, the extremely low density and weight are the most important advantages over steel wire ropes. For steel wire ropes, it is generally known that their lifetime drops when raising the dynamic stress on running or static ropes. The long-time behavior of high-dynamically stressed fiber ropes is totally unexplored up to now. This lack impedes the breakthrough of fiber ropes and causes a safety gap, which has to be closed. This paper describes the research on modern fiber ropes regarding their lifetime in normal and high dynamic applications. The derived results are interpreted with respect to application in robotics.

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Laufende Seile sind Drahtseile und Faserseile, die über Seilrollen, Treibscheiben und auf Trommeln laufen. Sie werden eingesetzt in Kraftfahrzeugen, Flugzeugen, Kranen, Aufzügen und Seilbahnen und sind sicherheitsrelevant. Sie tragen zum Beispiel Personen oder Lasten, die über Personen geführt werden können. Wegen ihrer endlichen Lebensdauer ist ein sicherer Betrieb nur gewährleistet, wenn die Seile sorgfältig überwacht und beim Erkennen der Ablegereife rechtzeitig ersetzt werden. Der Themenband informiert über Seile, insbesondere über Drahtseile, aber auch über Seile aus hochmodularen Fasern. Das vermittelte Fachwissen erleichtert die Bemessung und Überwachung laufender Seile, vor allem die Bemessung laufender Seile nach Lebensdauer. Das Buch führt Kriterien für die Ablegereife, für die Beurteilung von Seilschäden und deren Vermeidung vor dem Hintergrund eines sicheren Betriebes auf.

Material flow systems, conveyors and machines consist of the conveyor, main and subcomponents and basic elements such as load-carrier, break, clutch, gearwheel and drive. With regard to security the load-carrier plays a major role. The load-carrier which is most often used in cranes, lifts, cablecars, hoisting gears etc. is the steel wire rope. Here, it is differentiated between ropes which are submitted to tensile and pulsating tensile stresses and ropes which are submitted to pulsating bending stress and run over washers. The modern branch of material handling and logistics puts high requirements on the load-carriers with regard to their longevity, determination of the replacement state of wear, mass reduction in line with improved breaking resistance, abandonment of lubrication up to a coupling of the functions transmission of forces, measuring of stress, data transfer of self-control. These high requirements could not be satisfied by steel wire ropes alone. New machine elements of specific materials and with specific features have to be developed as load-carriers for material flow and logistics.

n order fulfillment, manual labor remains invaluable due in part to humans' flexibility in respect to task assignment and their ability to handle objects of various sizes. In order to evaluate individual workers' performance, heterogeneous work contents must be considered. For example, it is assumed that picking orders containing relatively heavy items require more time to fulfill than picking orders with lighter items. By the same token, the required picking effort is increased as the number of order lines and the required walking distance increase. Through the quantification of such performancerelevant input factors on the employee level, individual performance profiles can be created. These profiles can then be used as a basis for holistic performance evaluations as well as for optimizations in personnel planning and picking order assignment.