Das 3Liter-PPS® Konzept - Ganzheitliche Betrachtung von Organisation und PPS

Conventional ERP systems are inadequate in supporting decentralised organisations. 3-L PPC®, a tool developed at the Fraunhofer IPA in Stuttgart is based on the principle that software should adapt to the needs of the organisation and not vice versa. This tool can clearly depict decentralised structures during plant planning and operation and is especially suited to firms with a production plan based on customer's orders. In addition, 3-L PPC® offers great benefits in online planning of capacity-dependent order intakes. It adapts quickly to changes in the production process and can depict all relevant information using simple visualisation

Das 3Liter-PPS-Konzept

Vor dem Hintergrund der stetig steigenden Anforderungen einer kundenauftragsorientierten Produktion mit immer kürzeren Lieferzeiten und zunehmender Variantenvielfalt schlagen viele klein- und mittelständische Unternehmen erfolgreich den Weg zu dezentralen Organisationsstrukturen ein. Herkömmliche PPS-Systeme mit ihrem komplexen Regel- und Kontrollmechanismus widersprechen aber den Anforderungen dezentraler Organisationsformen. Das 3Liter-PPS®-Konzept steht für die Erweiterung dezentraler Organisationskonzepte um die Abläufe und Tätigkeiten der Planung und Steuerung, sowie die anforderungsgerechte Unterstützung durch die Software 3Liter-PPS®-Planungsmodul. Im Vordergrund steht die Abkehr von einer komplexen Planungsmethodik hin zu einfachen, flexiblen Verfahren der Produktionsplanung und -steuerung

Order Management by means of the 3-L-PPC Concept

The growing attempts of small and medium-sized enterprises to co-operate with other businesses of their size reflect the difficulties that SMEs face in coping with the current demands on manufacturing enterprises in Germany. By collaborating in networks, SMEs are able to achieve the same market power and economies of scale as large companies as well as the flexibility and rapid response typical of a small enterprise and its proximity to customers. Through the use of process and employee-oriented manufacturing structures and the introduction of decentralised, autonomous organisational units, the successful market performance of SMEs can be achieved

Order Management by means of the 3-L PPC® Concept

The growing attempts of small and medium-sized enterprises to co-operate with other businesses of their size reflect the difficulties that SMEs face in coping with the current demands on manufacturing enterprises in Germany. By collaborating in networks, SMEs are able to achieve the same market power and economies of scale as large companies as well as the flexibility and rapid response typical of a small enterprise and its proximity to customers. Through the use of process and employee-oriented manufacturing structures and the introduction of decentralised, autonomous organisational units, the successful market performance of SMEs can be achieved

Order Management by means of the 3-L-PPC-Concept

The growing attempts of small and medium-sized enterprises (SMEs) to cooperate with other businesses of their size reflect the difficulties that SMEs face in coping with the current demands on manufacturing enterprises in Germany. By collaborating in networks, SMEs are able to achieve the same market power and economies of scale as large companies as well as the flexibility and rapid response of a small enterprise and its proximity to customers. Through the use of process- and employee-oriented manufacturing structures and the introduction of decentralised, autonomous organisational units, the successful market performance of SMEs can be achieved

Order and Information Management in Production Networks

Competition in the manufacturing industry has heightened in recent years, thus necessitating a far-reaching rethinking process in corporate management. Especially small and medium-sized enterprises (SME) are in urgent need of concepts and solutions enabling them to successfully tackle the necessary shift towards manufacturing structures that are in line with market requirements. Today the advantages of decentralized, process and staff orientated manufacturing structures are beyond dispute. With regard to production planning and control, this means to commit planning and control activities into the hands of product-focused and responsible organizational units. Special regard must be paid to an extensive information supply on time to match the demands of the users and help solving problems. In consequence, it is necessary to abandon complex planning procedures and turn to simple, transparent methods and tools along with a decreased expenditure for data capture and maintenance

Das 3Liter-PPS Konzept - Ganzheitliche Betrachtung von Organisation und PPS

Vor dem Hintergrund der stetig steigenden Anforderungen einer kundenauftragsorientierten Produktion mit immer kürzeren Lieferzeiten und zunehmender Variantenvielfalt schlagen viele klein- und mittelständische Unternehmen erfolgreich den Weg zu dezentralen Organisationsstrukturen ein. Herkömmliche PPS-Systeme mit ihrem komplexen Regel- und Kontrollmechanismus widersprechen aber den Anforderungen dezentraler Organisationsformen. Das 3Liter-PPS-Konzept steht für die Erweiterung dezentraler Organisationskonzepte, um die Abläufe und Tätigkeiten der Planung und Steuerung sowie die anforderungsgerechte Unterstützung durch die Software 3Liter-PPS-Planungsmodul. Im Vordergrund steht die Abkehr von einer komplexen Planungsmethodik hin zu einfachen, flexiblen Verfahren der Produktionsplanung und -steuerung

Der erfolgreiche Betrieb internationaler Produktionsnetzwerke beginnt mit der Fabrikplanung

Der Zwang zu immer kürzer werdenden Time-to-Market Zeiten bei einem hohen Kostendruck verlangt vor allem bei komplexen Produkten neue Ansätze in der Entwicklung, Logistik und Fabrikplanung. Durch die Modularität der Flugzeugfamilie, der Integration von Systemlieferanten in den Entwicklungsprozeß und der gleichzeitigen Konzentration auf die eigenen Kernkompetenzen entsteht die Basis für ein Logistiknetzwerk. Die kurze Entwicklungszeit der Regionalflugzeugfamilie 528/728/928/ der Firma Fairchild Aerospace wurde nur durch die simultanen Produktentwicklung und Montage- und Logistikplanung und dem Einsatz modernster Methoden und Werkzeuge möglich

Near-Perfect Reconstruction Oversampled Nonuniform Cosine-Modulated Filter Banks Based on Frequency Warping and Subband Merging

A novel method for designing near-perfect reconstruction oversampled nonuniform cosine-modulated filter banks is proposed, which combines frequency warping and subband merging, and thus offers more flexibility than known techniques. On the one hand, desirable frequency partitionings can be better approximated. On the other hand, at the price of only a small loss in partitioning accuracy, both warping strength and number of channels before merging can be adjusted so as to minimize the computational complexity of a system. In particular, the coefficient of the function behind warping can be constrained to be a negative integer power of two, so that multiplications related to allpass filtering can be replaced with more efficient binary shifts. The main idea is accompanied by some contributions to the theory of warped filter banks. Namely, group delay equalization is thoroughly investigated, and it is shown how to avoid significant aliasing by channel oversampling. Our research revolves around filter banks for perceptual processing of sound, which are required to approximate the psychoacoustic scales well and need not guarantee perfect reconstruction

Spatial consistency for multiple source direction-of-arrival estimation and source counting.

A conventional approach to wideband multi-source (MS) direction-of-arrival (DOA) estimation is to perform single source (SS) DOA estimation in time-frequency (TF) bins for which a SS assumption is valid. The typical SS-validity confidence metrics analyse the validity of the SS assumption over a fixed-size TF region local to the TF bin. The performance of such methods degrades as the number of simultaneously active sources increases due to the associated decrease in the size of the TF regions where the SS assumption is valid. A SS-validity confidence metric is proposed that exploits a dynamic MS assumption over relatively larger TF regions. The proposed metric first clusters the initial DOA estimates (one per TF bin) and then uses the members' spatial consistency as well as its cluster's spread to weight each TF bin. Distance-based and density-based clustering are employed as two alternative approaches for clustering DOAs. A noise-robust density-based clustering is also used in an evolutionary framework to propose a method for source counting and source direction estimation. The evaluation results based on simulations and also with real recordings show that the proposed weighting strategy significantly improves the accuracy of source counting and MS DOA estimation compared to the state-of-the-art