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This paper deals with the problem of reducing fuel consumption and pollutant emissions of Heavy Duty Vehicles (HDV). The overall objective of improving the efficiency of the HDV can be obtained by employing the most advanced technologies in powertrain control and intelligent transportation systems, by taking into account road topography, traffic, weather conditions and driver behavior. This paper...
This paper presents an integrated system (IS) devoted to solve the complex scheduling problems in steel-making and casting (SMC) plants. The presented IS is composed of four modules: data base, optimization, simulation modules, and the user interface. In particular, we develop the two main components of the IS: the optimization and simulation modules. The optimization module is based on a mixed-integer...
In this paper we deal with the problem of modeling and simulating the Steelmaking and Continuous Casting (SM-CC) processes. The SM-CC production processes are very complex and exhibit production cycles that have to be managed with suitable sequencing and scheduling procedures in order to minimize blocking and bottleneck conditions. The paper describes in details the SM-CC process by a modular approach...
This paper focuses on the modeling and analysis of complex production systems such as Steelmaking Continuous Casting (SM-CC) plants. To this aim, the discrete event simulation is employed to verify the dynamics and the performance of the SM-CC systems. First, the manufacturing system activities are described in detail by the Unified Modeling Language (UML). Then, the UML activity diagrams are translated...
This paper deals with the scheduling of operations in a Steelmaking and Continuous Casting (SM-CC) plant. In particular, we consider a real case study of an integrated plant located in the North of Italy. First, we describe in details the SM-CC process of the considered system by using the Unified Modeling Language. Second, we focus on the schedule of casts on the continuous casting machine that is...
The paper presents a lean manufacturing strategy integrating Value Stream Mapping (VSM), the Unified Modeling Language (UML), and discrete event simulation. The procedure is iterative and hierarchical. Starting from a detailed description of the manufacturing process by the Unified Modeling Language (UML), the VSM graphical approach allows the identification and removal of non-value adding activities...
We present a novel lean manufacturing procedure relying on the Value Stream Mapping (VSM) tool and the Analytic Hierarchy Process (AHP) technique. The procedure is iterative and hierarchical. Starting from a detailed description of the manufacturing process by the Unified Modeling Language (UML), the VSM graphical approach allows the identification of non-value adding activities, and the AHP technique...
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