A Model for Sequence Based Power Management in Cyber Physical Systems

Barthels, Andreas; Ruf, Florian; Walla, Gregor; Fröschl, Jürgen; Michel, Hans-Ulrich; Baumgarten, Uwe

doi:10.1007/978-3-642-23447-7_9

Cited by 12 publications

(7 citation statements)

References 14 publications

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“…The mechanism can be abstractly described in terms of the cyber-physical system modeling approach presented in [19]. Depicted in Fig.…”

Section: A Cyber-physical Modelmentioning

confidence: 99%

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Autonomous load shutdown mechanism as a voltage stabilization method in automotive power nets

Ruf¹,

Barthels²,

Walla³

et al. 2012

2012 IEEE Vehicle Power and Propulsion Conference

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The power demand in 14 V automotive power buses has steadily increased in recent years. Due to the high peak power of electrified chassis control systems, significant voltage drops can occur within the power net. These voltage drops can lead to malfunctions of ECUs (Electronic Control Units). This paper describes the influence of an autonomous load shutdown mechanism on voltage stability in automotive power buses.The mechanism is applied to heating systems, which feature a combined peak power demand of over 1 kW in modern luxury class vehicles. A temporary shutdown of these heating systems for a few seconds is unnoticeable for the costumer due to large time constants of these systems. The influence of the mechanism on the voltage stability is investigated within a physical power net simulation. It is shown, that the mechanism allows the negligence of power-hungry heating systems in the design process of the power bus regarding peak power scenarios.Index Terms-Vehicle power net, voltage stability, autonomous mechanism, cybernetic system

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“…The mechanism can be abstractly described in terms of the cyber-physical system modeling approach presented in [19]. Depicted in Fig.…”

Section: A Cyber-physical Modelmentioning

confidence: 99%

“…Power management module as a transdncing machine[19]. On top are the functional states of the autonomous subsystems; solid black transitions are based upon the measured supply voltage levels, whereas gray transitions are due to user input.…”

mentioning

confidence: 99%

Autonomous load shutdown mechanism as a voltage stabilization method in automotive power nets

Ruf¹,

Barthels²,

Walla³

et al. 2012

2012 IEEE Vehicle Power and Propulsion Conference

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“…Benini et al surveyed design techniques for system-level power management [8]. More recent work includes power-aware multi core scheduling [9] and cyber-physical systems [10], [11].…”

Section: A Power Management Paradigmsmentioning

confidence: 99%

“…3. Fixed cycle scheduling as a power management plan, taken from [11]. α denotes the change of a power state, i.e.…”

Section: B Mainline Linuxmentioning

confidence: 99%

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PREcup-1: An embedded system platform for prototyping ECU power management

Barthels¹,

Ruf²,

Schlenk³

et al. 2012

2012 IEEE Vehicle Power and Propulsion Conference

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Abstract-This paper presents an embedded system platform for investigating power management methods relevant to future automotive systems. The platform is built around an ARM Cortex A8 System on Chip (SoC). It allows for measuring the power consumption of the SoC and its peripherals. The SoC has a defined set of power states, namely frequency and voltage operating points, as well as retention and off-modes. During runtime, the power states are managed by a novel Linux-based scheduler. It allows the execution of plans combining both timed software and power state switches. The design is evaluated using a single ECU and its local scheduling.

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