SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "LAR1:bth srt2:(2000-2004)"

Sökning: LAR1:bth > (2000-2004)

Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  • Ahlin, Kjell, et al. (författare)
  • Comparing Road Profiles with Vehicle Perceived Roughness
  • 2004
  • Ingår i: International Journal of Vehicle Design. - Geneva, Switzerland : Inderscience Enterprises. - 0143-3369. ; 36:2-3, s. 270-286
  • Tidskriftsartikel (refereegranskat)abstract
    • Accurate road profiles are useful in vehicle design, such as for simulation of durability and ride quality. Laser/inertial profilometers typically record I mm wide profiles. The question is how well such a profile matches perceived vehicle wheel roughness. The objective here was to create a more representative wheel track longitudinal profile. Simulated and measured wheel vibration was compared on a 6km long road. Simulations were made for several definitions of the profile. Results for single laser sensor profiles showed reasonable likeness to truck perceived roughness. By far the best likeness (14.5% better) was achieved when the profile was based on triangular 25%-50%-25% weighted data from three sensors in the wheel track. Clearly, vehicle engineers can benefit from using multiple laser profile sensors, instead of a single sensor. This will improve test accuracy, thus reducing vehicle design project lead times and costs.
  •  
3.
  • Albinsson, Gunilla, et al. (författare)
  • I vardagen konstrueras jämställdhet
  • 2004
  • Rapport (övrigt vetenskapligt)abstract
    • Studiens övergripande syfte är att fördjupa förståesen för jämställdhet inom en kommunal förvaltning utifrån tre teoretiska utgångspunkter; teoretiska perspektiv på organisation, könsperspektiv samt teorier om makt. I fokus står en grupp yrkesverksamma kvinnor och män. Vid genomförandet av den empiriska studien används observationer och kvalitativa intervjuer. När ett könsperspektiv är utgångspunkt vid studier av en organisation framträder könets betydelse på såväl struktur- som individnivå. I resultatet illustrerar en bild av både hinder och möjligheter för en jämställd organisation. De hinder som finns är hierarki, könssegregering, kunskapsbrist, kulturell kod samt språkbruk. Möjligherna utgörs av styrning, kunskap och metoder.
4.
  •  
5.
6.
  • Andersson, Carry, et al. (författare)
  • Dynamic Characteristics of a Tool Holder Shank in Lathe
  • 2000
  • Annan publikation (övrigt vetenskapligt)abstract
    • Dynamic characteristics of a Tool Holder Shank were determined by using the Finite Element Method and Experimental Modal Analysis. Good agreement between FE-model and the experimental model was obtained for the Tool Holder Shank itself. With the Tool Holder Shank in Lathe the agreement was less good. Reasons for this are discussed. Suggestions for further work on including actuators to reduce vibrations are given.
7.
  •  
8.
  • Andrén, Linus, et al. (författare)
  • Active Control of Boring Bar Vibrations Using the Leaky Feedback Filtered X-LMS
  • 2003
  • Konferensbidrag (refereegranskat)abstract
    • The boring operation is a cumbersome manufacturing process marred by noise and vibration related problems. The manufacturing industry is having trouble with these kinds of metal cutting operations. There exist several approaches to reduce the vibrations in cutting operations in general. Passive tuned dampers in boring bars have been commercially available for some time. An active solution is likely to be more robust to changes in the spectral content, where the passive counterpart have a small operable area, the active solution is able to adapt to these kinds of changes. Active vibration control in boring operations has been proven to be feasible. The algorithm used in the successful experiments was the feedback filtered X-LMS algorithm. This algorithm does however not guarantee a stable behavior, but incorporating a leakage factor will make the algorithm more robust. Power spectral density of boring bar vibration of real cutting experiments show that the leaky filtered X-LMS algorithm is a possible candidate to be a suitable control algorithm. Nyquist diagrams of the controller during operation show that the stability is increased significantly.
  •  
9.
  • Andrén, Linus, et al. (författare)
  • Active Control of Machine Tool Vibrations in External Turning Operations
  • 2003
  • Ingår i: Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture. - 0954-4054. ; 217:6, s. 869-872
  • Tidskriftsartikel (refereegranskat)abstract
    • Vibration and noise in metal cutting are ubiquitous problems in the workshop. The external turning operation is one kind of metal cutting that exhibits vibration related problems. Severe noise is also a problem growing in proportion due to regulations in preventing hearing loss. Active vibration control is a potential solution to such problems. With the piezo ceramic actuator technology of today, the size of the actuator can be kept small and still be able to produce a sufficient amount of force for the anti vibrations. Results from several continuous cutting experiments show a 40 dB reduction of the cutting tool vibration level. The design of the active technique enables this technology to be applicable to a general lathe provided the mounting arrangement is fairly similar.
  •  
10.
  • Andrén, Linus, et al. (författare)
  • Active Noise Control Experiments in a Fork-lift Truck Cabin
  • 2004
  • Konferensbidrag (refereegranskat)abstract
    • High comfort for the driver in working vehicles is an important feature as well as a demand from the drivers. Low noise level is an essential factor for the manufacturer to maintain a high standard and comfort of vehicles. In many cases the noise inside the cabin can be related to the engine orders. Hydraulic pumps and fans are also related to the engine but not necessarily integers of the engine order. Passive absorbers are not suitable for the lowest frequencies and one approach is to use an active noise control system to solve the noise problem at low frequencies. In the present experiment loudspeakers were mounted inside the cabin of a fork lift-truck to produce the secondary noise field. To sense the residual noise, microphones were installed close to the driver's head. The aim is to create a zone of reduced noise around the head. Since a large portion of the noise inside the cabin can be related to the engine, an active control system based on a feedforward solution is possible. Experimental results from a feedforward solution of active noise control in a fork-lift truck cabin show that the noise level in the low frequency region can be reduced significantly.
Skapa referenser, mejla, bekava och länka
Åtkomst
fritt online (345)
Typ av publikation
konferensbidrag (439)
tidskriftsartikel (197)
rapport (63)
bokkapitel (60)
annan publikation (56)
licentiatavhandling (40)
visa fler...
doktorsavhandling (33)
bok (10)
samlingsverk (redaktörskap) (9)
visa färre...
Typ av innehåll
refereegranskat (627)
övrigt vetenskapligt (280)
Författare/redaktör
Claesson, Ingvar (110)
Wohlin, Claes, (49)
Lundberg, Lars (40)
Nordholm, Sven (38)
Dahl, Mattias, (37)
Davidsson, Paul (37)
visa fler...
Mohammed, Abbas (30)
Nordebo, Sven, (30)
Fiedler, Markus (30)
Grbic, Nedelko (30)
Dittrich, Yvonne (30)
Johansson, Sven (27)
Håkansson, Lars (25)
Gustavsson, Rune (24)
Fredriksson, Martin, (24)
Eriksén, Sara (24)
Nilsson, Arne A. (22)
Broman, Göran (22)
Søilen, Klaus Solber ... (21)
Huber, Stefan (19)
Popescu, Adrian (18)
Ibragimov, Nail H. (18)
Pettersson, Mårten (17)
Hedberg, Claes, (16)
Nordberg, Jörgen (16)
Wernstedt, Fredrik (16)
Kuzniarz, Ludwik (15)
Dam, Hai Huyen (15)
Haan, Jan Mark de (15)
Persson, Per, (14)
Hansson, Thomas (14)
Carlsson, Bengt (14)
Svahnberg, Mikael, (14)
Berglund, Johan (13)
Jönsson, Anders (13)
Rakus-Andersson, Eli ... (13)
Lennerstad, Håkan (12)
Gustavsson, Ingvar (12)
Rouchy, Philippe, (12)
Ekelin, Annelie (12)
Grahn, Håkan, (12)
Elovaara, Pirjo (12)
Lindeberg, Olle (12)
Lindström, Fredric (11)
Runeson, Per (11)
Bosch, Jan, (11)
Carlsson, Patrik, (11)
Bengtsson, PerOlof (11)
Johnson, Henric (11)
Johansson, Stefan J. (11)
visa färre...
Lärosäte
Blekinge Tekniska Högskola (907)
Lunds universitet (40)
Karolinska Institutet (19)
Linnéuniversitetet (15)
Luleå tekniska universitet (13)
Göteborgs universitet (12)
visa fler...
Högskolan i Halmstad (11)
Röda Korsets Högskola (9)
Linköpings universitet (8)
Uppsala universitet (6)
Malmö högskola (5)
Högskolan i Jönköping (5)
Högskolan Kristianstad (5)
Mittuniversitetet (3)
Kungliga Tekniska Högskolan (2)
Chalmers tekniska högskola (2)
Umeå universitet (2)
Mälardalens högskola (1)
visa färre...
Språk
Engelska (840)
Svenska (66)
Norska (1)
Ämne (HSV)
Naturvetenskap (387)
Teknik (373)
Samhällsvetenskap (175)
Medicin och hälsovetenskap (60)
Humaniora (7)

År

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy