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Appendix H: Model-Based Design
Pages 227-234

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From page 227...
... The simple reason is that the control • Linking designs directly to requirements software, which is in the engine and transmission control • Integrating testing with design to continuously identify units, is difficult and time consuming to modify. It has since and correct errors been adopted industry wide in applications such as antilock • Refining algorithms through multidomain simulation braking, antiroll, vehicle stability, active cruise control, and • Automatically generating embedded software code torque distribution.
From page 228...
... Figure H-2 Different levels of modeling required throughout.eps bitmap -- resolution is degraded
From page 229...
... Figure H-6 Production code generation.eps bitmap FIGURE H-4 Rapid control prototyping Figure H-4 Rapid control prototyping.eps bitmap FIGURE H-7 Software-in-the-loop. Figure H-7 Software in the loop.eps bitmap FIGURE H-5 On-target rapid prototyping.
From page 230...
... SOURCE: Courtesy of Cummins. Figure H-10 Engine on dynamometer.eps bitmap
From page 231...
... Figure H-11 Battery connected to a DC power source.eps bitmap FIGURE H-12 Several components in the loop -- MATT example. SOURCE: Argonne National Laboratory.
From page 232...
... in the Loop -- If vehicle model and engine plant have been validated, Hardware use a new production engine controller to evaluate vehicle in the Loop fuel efficiency over a drive cycle. Rapid -- Use engine hardware and emulated controller if the main Control modification is related to hardware.
From page 233...
... Figure H-15 Mean par ticular matter results with two standard.eps bitmap -- degraded legibility conditions at which these parameters are measured the sensitivity of the engine on/off related to the pedal along with the instrumentation will influence the position. uncertainty of the final simulations.
From page 234...
... For any process involving study engine emissions by using a steady state model hardware, from HIL to RCP or vehicle testing, detailed or to study component transient behavior by using a test procedures should be developed to ensure consis- backward model. A study providing general guidance tency across organizations.


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