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Model Based Design
Component Technologies Impact on Fuel Efficiency
Government Performance Result Act (GPRA)
Powertrain Configuration
Component Requirements
Vehicle Level Control
Model Validation
Light Duty
Heavy Duty


While it is might be easy to develop a suboptimal advanced vehicle, significant expertise is necessary to develop a vehicle level control logic that minimizes fuel consumption and emissions while maintaining drive quality.  For electric drive vehicles, the vehicle level control decides:

  • Engine (or fuel cell) ON/OFF
  • Component operating conditions (i.e., torque, speed, current voltage)
  • Shifting algorithm (when multi-gear transmission is present)
  • Mode selection (e.g., input, compound or fixed gear in 2 Mode power split)
  • Battery SOC control

To achieve that goal, numerous approaches are possible. Over the past decade, ANL’s Vehicle Modeling Simulation and Control group has developed and used numerous approaches, including:

  • Global optimization (Dynamic Programming) (pdf)
  • Rule based logic (pdf)
  • Heuristic optimization (i.e., DIRECT = Divided Rectangle Algorithm, Genetic algorithm) (pdf)
  • Instantaneous optimization (pdf)

Next: Vehicle Level Control Approaches >


Instantaneously Optimized Controller for a Multimode Hybrid Electric Vehicle (pdf)

Plug-in Vehicle Control Strategy: From Global Optimization to Real Time Application (pdf)


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