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Träfflista för sökning "WAKA:ref ;pers:(Lennartson Bengt 1956)"

Sökning: WAKA:ref > Lennartson Bengt 1956

  • Resultat 241-250 av 337
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241.
  • Pellicciari, M., et al. (författare)
  • AREUS — Innovative hardware and software for sustainable industrial robotics
  • 2015
  • Ingår i: IEEE International Conference on Automation Science and Engineering. - 2161-8070 .- 2161-8089. - 9781467381833 ; , s. 1325-1332
  • Konferensbidrag (refereegranskat)abstract
    • Industrial Robotics (IR) may be envisaged as the key technology to keep the manufacturing industry at the leading edge. Unfortunately, at the current state-of-the-art, IR is intrinsically energy intensive, thus compromising factories sustainability in terms of ecological footprint and economic costs. Within this scenario, this paper presents a new framework called AREUS, focusing on eco-design, eco-programming and Life Cycle Assessment (LCA) of robotized factories. The objective is to overcome current IR energetic limitations by providing a set of integrated technologies and engineering platforms. In particular, novel energy-saving hardware is firstly introduced, which aim at exchanging/storing/recovering energy at factory level. In parallel, innovative engineering methods and software tools for energy-focused simulation are developed, as well as energy-optimal scheduling of multi-robot stations. At last, LCA methods are briefly described, which are capable to assess both environmental and economic costs, linked to the flows of Material, Energy and Waste (MEW). A selected list of industrially-driven demonstration case studies is finally presented, along with future directions of improvement.
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242.
  • Pellicciari, M., et al. (författare)
  • Object-oriented modeling of industrial manipulators with application to energy optimal trajectory scaling
  • 2011
  • Ingår i: ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011; Washington, DC; United States; 28 August 2011 through 31 August 2011. - 9780791854822 ; 5:A and B, s. 997-1006
  • Konferensbidrag (refereegranskat)abstract
    • The development of safe, energy efficient mechatronic systems is currently changing standard paradigms in the design and control of industrial manipulators. In particular, most optimization strategies require the improvement or the substitution of different system components. On the other hand, from an industry point of view, it would be desirable to develop energy saving methods applicable also to established manufacturing systems being liable of small possibilities for adjustments. Within this scenario, an engineering method is reported for optimizing the energy consumption of serial manipulators for a given operation. An object-oriented modeling technique, based on bond graph, is used to derive the robot electromechanical dynamics. The system power flow is then highlighted and parameterized as a function of the total execution times. Finally, a case study is reported show- ing the possibility to reduce the operation energy consumption when allowed by scheduling or manufacturing constraints.
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243.
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244.
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245.
  • Pettersson, Stefan, 1969, et al. (författare)
  • Exponential Stability Analysis of Nonlinear Systems using LMIs
  • 1997
  • Ingår i: Proc. of 36th IEEE Conference on Decision and Control, San Diego, DEC 10-12. ; , s. 199-204
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents a constructive method for showing exponential stability of autonomous nonlinear systems consisting of state-dependent weighted linear systems. This kind of system representation is common in for instance fuzzy systems or is the result of an exact or approximative description of an arbitrary nonlinear vector field. Stability is shown by joining multiple local Lyapunov functions properly in the state-space. The overall Lyapunov function, consisting of the local ones, are allowed to be discontinuous at the states where the trajectory passes from one local region to another. By using local quadratic Lyapunov functions the stability conditions are formulated as linear matrix inequalities (LMIs), which can be solved efficiently by computerized methods.
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246.
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247.
  • Pettersson, Stefan, 1969, et al. (författare)
  • Hybrid Modelling Focused on Hybrid Petri Nets
  • 1995
  • Ingår i: Proc. of the 2nd European Workshop on Real-time and Hybrid systems, Grenoble, France. ; , s. 303-309
  • Konferensbidrag (refereegranskat)
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248.
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249.
  • Pettersson, Stefan, 1969, et al. (författare)
  • LMI for Stability and Robustness of Hybrid Systems
  • 1997
  • Ingår i: Proc. 1997 American Control Conference, Albuquerque, New Mexico,JUN 04-06. ; , s. 1714-18
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents results for stability and robustness of hybrid systems consisting of nonlinear subsystems. Present stability results that are extensions of classical Lyapunov theory are restricted to certain kinds of hybrid systems. For example, it is required that all subsystems have the same equilibrium point. In this paper these results are generalized, but more importantly, it is shown how Lyapunov functions for hybrid systems can be solved by linear matrix inequalities (LMI). Furthermore, it is shown how uncertainties around the nominal switch sets can be handled by introducing acceptable switch regions as additional stability conditions. The theory is illustrated by an example.
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250.
  • Pettersson, Stefan, 1969, et al. (författare)
  • Stability and robustness for hybrid systems
  • 1996
  • Ingår i: Proc. of the 35th IEEE Conference on Decision and Control, Kobe, Japan, DEC 11-13. ; , s. 1202-1207
  • Konferensbidrag (refereegranskat)abstract
    • Stability and robustness issues for hybrid systems are considered in this paper. Present stability results, that are extensions of classical Lyapunov theory, are not straightforward to apply in general due to two reasons. First, existing theory do not unveil how to find needed Lyapunov functions. Secondly, at some time instants it is necessary to know the values of the continuous trajectory. Because of these drawbacks, stronger conditions for stability are suggested. The search for Lyapunov functions can then be formulated as a linear matrix inequality problem. Additionally; it is shown how to obtain robustness properties. An example illustrates the results.
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  • Resultat 241-250 av 337
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forskningsöversikt (1)
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refereegranskat (337)
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Fabian, Martin, 1960 (70)
Bengtsson, Kristofer ... (39)
Wigström, Oskar, 198 ... (28)
Falkman, Petter, 197 ... (26)
Christiansson, Anna- ... (23)
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Åkesson, Knut, 1972 (22)
Miremadi, Sajed, 198 ... (20)
Fransson, Carl-Magnu ... (18)
Riazi, Sarmad, 1986 (18)
Danielsson, Fredrik, ... (17)
Svensson, Bo, 1959- (16)
Andreasson, Sven Arn ... (14)
Gullander, Per, 1968 (14)
Pettersson, Stefan, ... (14)
Tittus, Michael, 196 ... (14)
Adlemo, Anders, 1957 (12)
Noori-Hosseini, Mona ... (11)
Kristiansson, Birgit ... (11)
Andersson, Kristin, ... (10)
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Fei, Zhennan, 1984 (10)
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Carlson, Johan, 1972 (9)
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Mashaei, Maziar, 197 ... (9)
Liu, Yueqiang, 1971 (8)
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