A generic energy consumption model for decision making and energy efficiency optimisation in manufacturing

Figures & data

Figure 1 An example Sankey diagram illustrating the distribution of the power consumed into losses and effective power for a typical machine tool (adapted from Gloor 2000).

Figure 2 Typical power consumption profile of a machine tool over time.

Figure 3 Illustration of the discrete state/transition energy consumption model structure.

Figure 4 Example of an operational profile given as a time/transition sequence.

Figure 5 High accuracy modelling of aggregate systems based on multiple automata.

Figure 6 Abstraction for fast high level optimisation in multi-layer aggregate systems.

Figure 7 Basic state/transition graph defining the possible use of a Hermle UWF1202 machine tool.

Figure 8 The main components' power consumption in each of the states.

Figure 9 A usage profile for a roughing operation.

Figure 10 The measured machine total power consumption over time for plane milling with a milling head (top) compared to profiles predicted by simulation using the example usage profile and example model (bottom) and higher levels of detail of the model (middle rows).

Gloor, R., 2000. Energiesparmöglichkeiten im Gewerbe, [online]. Available from: http://www.energie.ch/themen/industrie/infel/index.htm [Accessed 12 December 2008]

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