AVL发动机控制软件开发事例).pdf

Powertrain Control Software Development • Control Algorithm Design • EGR/VGT Control • DPF Control • SCR Control • OBD • Control Software Development Dr. Holger Hülser Manager Advanced Engineering Software and Electronics Engineering Technology Powertrain Systems holger.huelser@ AVL Algorithm Design Methods, Tools and Products • For highly complex, dynamic applications: Algorithm design using the MMCDTM-Process (Model-based Multivariable Controller Design) • For simple applications: Validation and modification of existing algorithms • AVL applies most modern rapid control prototyping tools: (MATLAB / SIMULINK, ASCET, INTECRIO) • Products: - Specification on paper - Tested, executable specification (floating point) - Tested, executable specification (fixed point) - Software for target microcontroller - Administrative and technical coordination of software design projects January 2008 | page 2 Experiences with Algorithms for Diesel Engines Turbocharger Control Diesel λControl EGR and Throttle Control • WG or VTG • Closed-loop λcontrol for rich • Coordinated control • 2-stage T/C operation • Smoke limitation