Denna rapport ingår i ett examensarbete på grundnivå inom ämnet Produktutveckling. Arbetet har utförts för Runius Design AB i Stockholm i samarbete med LinTec Combisystem AB och Calibra AB. Examensarbetet omfattar 15 högskolepoäng och genomfördes av undertecknad, teknologstudent från Mälardalens Högskola vårterminen 2014. Uppdraget innebar att vidareutveckla en handikappanpassad och justerbar tvättställsmodul som ingår i LinTec:s produktsortiment genom att konstruera en mer lättmonterad och ekonomiskt fördelaktig produkt samt anpassa den för både hem och offentlig miljö. Produktutvecklingsprocessen inleddes med att förstå problemet genom analys av uppdragsgivarens krav samt genomgång av produkten som säljs idag. Med hjälp av insamlad information och olika produktutvecklingsverktyg kunde idégenereringen ta form vilket slutade i två helhetskoncept. I samråd med uppdragsgivaren och hänsyn till krav och funktioner valdes ett koncept ut som vidareutvecklades till ett slutkoncept. Slutkonceptet innebar en konstruktion med specialtillverkad stomme av bockat konstruktionsstål anpassad för olika standardkomponenter. Stommen är enkelt och materialbesparande konstruerad vilket underlättar för tillverkning och är mer ekonomiskt fördelaktigt än tidigare. Produkten består av en väggkassett som monteras på badrummets vägg. I väggkassetten sitter ett par teleskopskenor på vardera sidan av densamma som en ledplatta i sin tur är monterad på. Mellan denna ledplatta och väggkassett är en gasfjäder vertikalt monterad som utför justeringen av modulen i höjdled. En täckplåt sitter monterad på ledplattans framsida varpå tvättställ och tvättställsblandare samt en specialtillverkad spegelram är monterad. I övrigt innehåller produkten standardkomponenter såsom vattenlås, flexibla vattenslangar, avloppslang, bultar, muttrar, skruvar och en knapp för att frigöra gasfjädern. Konstruktionens hållfasthet har genomgående kontrollerats med hjälp av analyser i datorprogramvaran SolidWorks, ett 3D-baserat Computed Aided Design-program. Slutresultatet av detta arbete illustreras i form av renderade CAD-bilder, sammanställningsritningar och tillverkningsritningar. / This report is part of a thesis project at the undergraduate level in the subject of Product Development. The work was carried out for Runius Design AB in Stockholm in cooperation with LinTec Combisystem AB and Calibra AB. The work comprises 15 credits and was conducted by a student from Mälardalen University during the spring semester 2014. The assignment involved a further development of an accessible and adjustable washbasin component for disabled, which is part of LinTec´s product assortment. The requirements for the new product involved designing a more easily mounted and cheaper to produce product. The product should also be suitable for both home and public environments. The product development process was initiated with understanding the problem which included analyzing the client's requirements and a review of the product sold today. Using the collected information and applying various product development tools, the idea generation could take place which ended up in two overall concepts. During discussions with the client, taking into account the requirements and desired features for the next generation product, the preferred concept was chosen and further developed into a final product. The final product involved a design with custom made frames of bent structural steel adapted for various standard components. The frame is simple to manufacture and material-optimized, which facilitates the manufacture and is also more economically beneficial than the previous version. The product consists of a wall cassette mounted on the bathroom wall. On each side of the cassette walls there are a pair of telescopic rails with a guiding plate mounted between them. A gas spring is vertically mounted between the guiding plate and the wall cassette performing the height adjustment of the module. A cover plate is mounted on the front of the guiding plate whereupon a washbasin, associated basin mixer and a custom made mirror frame together with a mirror plate is fixed. Moreover, the product contains standard components such as water seal, flexible water hoses, drain hoses, bolts, nuts, screws and a trigger button for the gas spring. Structural integrity was checked by analysis in the computer software SolidWorks, a 3D-based Computed Aided Design-program. The final product is illustrated in the shape of rendered CAD images, assembly drawings and manufacturing drawings.

We explore using pulsed latches for timing optimization -- a first in the academic FPGA community. Pulsed latches are transparent latches driven by a clock with a non-standard (i.e. not 50%) duty cycle. As latches are already present on commercial FPGAs, their use for timing optimization can avoid the power or area drawbacks associated with other techniques such as clock skew and retiming. We propose algorithms that automatically replace certain flip-flops with latches for performance gains. Under conservative short path or minimum delay assumptions, our latch-based optimization, operating on already routed designs, provides all the benefit of clock skew in most cases and increases performance by 9%, on average, essentially for "free". We show that short paths greatly hinder the ability of using pulsed latches, and further improvements in performance are possible by increasing the delay of certain short paths.

We explore using pulsed latches for timing optimization -- a first in the academic FPGA community. Pulsed latches are transparent latches driven by a clock with a non-standard (i.e. not 50%) duty cycle. As latches are already present on commercial FPGAs, their use for timing optimization can avoid the power or area drawbacks associated with other techniques such as clock skew and retiming. We propose algorithms that automatically replace certain flip-flops with latches for performance gains. Under conservative short path or minimum delay assumptions, our latch-based optimization, operating on already routed designs, provides all the benefit of clock skew in most cases and increases performance by 9%, on average, essentially for "free". We show that short paths greatly hinder the ability of using pulsed latches, and further improvements in performance are possible by increasing the delay of certain short paths.

Thesis (PhD)--University of South Australia, 1997

Thesis (M.S.)--Rochester Institute of Technology, 1989. / Includes bibliographical references.

Thesis (M.S.)--Rochester Institute of Technology, 1990. / Includes bibliographical references (leaf 54).

Zugl.: Aachen, Techn. Hochsch., Diss., 2005.

Zugl.: Karlsruhe, Univ., Diss., 2005

Thesis (M.S.)--Ohio University, June, 1999. / Title from PDF t.p.

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: three-dimensional analysis. Includes bibliographical references (leaves 50-51).