F2008-05-042
Configurable Energy Management for Multiple Platform Integration
Energy Management in vehicles is a topic nearly every car manufacturer is involved with. State of the art is an individual, vehicle or platform specific integration of Energy Management as a single characteristic solution with few extension capabilities. A Multiple Platform Energy Management instead enables the integration in more platforms and vehicles and thus reducing effort and costs per vehicle with increasing quality at the same time. The presentation will cover necessary software elements and key aspects of integration for a Multiple Platform Integration. The first key aspect is separating Energy Management into ECU specific and system specific functionality and distributing it over vehicle E/E architecture thus generating the energy architecture. This task is supported by automotive software and architecture standards. The presentation will show the involved standardizations and highlight resulting consequences. The energy architecture consists of centralized and decentralized software functions. The decentralized ECU specific software functions provide energy evaluation for the corresponding ECU and interaction to ECU bounded functions. Typical ECU bounded functions are driver assistance, chassis or hybrid propulsion functions. The centralized system functions determine and evaluate the system wide energy state and control the energy in the vehicle E/E architecture. This is the real Energy Management and the core of the energy architecture, where algorithms for strategic behavior are included and which makes the appropriate decisions and controls for energy consumption or cycling of the energy storages. Another key aspect for platform integration is calibration and adaptation for the chosen platform, because control of energy is a platform specific task. The adaptation possibilities of a Multi Platform Energy Management enable varying the focus between important platform properties like propulsion, comfort or efficiency and take into account different ECUs integrated in the vehicle E/E architecture. Adaptation is supported by definition of fixed categories for ECU energy behavior like consumption, generation or storage, which simplifies the transfer between vehicle E/E architectures. Service oriented communication is an appropriate method to implement flexibility in energy architecture via dynamic configuration possibilities. The final key aspect is the integration of Energy Management into the manufacturer specific development process. Because tool landscape is an important part of development process, a set of tool integration possibilities will be proposed. The presentation will close with a solution for Multiple Platform Energy Management and regard first experiences for realization.
Session: Energy Management