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Tuesday, May 15, 2007

multitude of microprocessors in electric cars

Abstract of a talk to happen later in May:

"Tesla Roadster, like most modern vehicles, relies on embedded microprocessors for safety and performance. From the anti-lock braking system (ABS) to motor control, firmware-defined functions control all aspects of vehicle behavior. For example, control loops in a dozen microprocessors monitor battery environmental parameters, state of charge, and safety interlocks. Three processors interpret driver inputs from the shifter and accelerator to control motor speed and direction. A fourth processor monitors motor and controller temperatures to modulate power to two blower fans for cooling. Four CAN busses connect these and other vehicle subsystems to gather status and coordinate control functions. This presentation will outline the history of the Tesla Roadster and discuss a few of the design trade-offs resulting in the decisions made in its implementation. "


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