Abstract
AbstractThis article illustrates the control design process, from the requirements determination phase to the vehicle validation phase, as applied to GM's first two‐mode hybrid electric powertrains. Customer requirements are first translated into metrics that must be met with the closed loop control design. Physics‐based modeling tools developed in‐house are utilized to simplify the development of control design and simulation models for the multi‐input multi‐output hybrid driveline system. Frequency sweep methods and tools are then employed to validate the models and later to verify the control implementation with vehicle tests. Modern control tools are used to develop a multi‐input multi‐output feedback control design. Finally, vehicle test results show how this design approach is successful in dramatically changing the open loop behavior of the dynamic driveline response, turning an unsalable product into a world class leader in drive quality.
Published Version
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