In this paper, we show how Model-Based Design can be applied in the development of a hybrid electric vehicle system. The paper explains how Model-Based Design begins with defining the design requirements that can be traced throughout the development process. This leads to the development of component models of the physical system, such as the power distribution system and mechanical driveline. We also show the development of an energy management strategy for several modes of operation including the full electric, hybrid, and combustion engine modes. Finally, we show how an integrated environment facilitates the combination of various subsystems and enables engineers to verify that overall performance meets the desired requirements.
The application of Model-Based Design to engineering design problems is well established in the aerospace industry. One of the challenges of large scale adoption is the increase in model and development process complexity. Models provide a means to communicate design information, define architectures that support team collaboration, verify specifications through simulations, and automatically generate code. This paper illustrates the use of a shared platform for communicating critical design elements within a collaborative environment. The case study presented in this paper demonstrates the development of a flight-control system for a multirotor vehicle within Simulink ® .
NomenclatureDOF = Degrees of Freedom FCS = Flight Control Software GPS = Global Positioning System IMU = Inertial Measurement Unit I/O = Input/Output ROI = Return on Investment SCM = Source Control Management SVN = Subversion® (version control software) TLC = Target Language Compiler
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The use of simulation studies to better understand the dynamic behavior of a system under investigation is at the core of verifying your designs early in the development process. Despite the amount of data that such studies produce, a 3D representation of the system creates a more complete understanding of system behavior. This article describes the use of 3D animation in simulation-centric workflows to augment early verification activities, such as those used in Model-Based Design. The evolution of technology and domain specialization in the simulation and 3D graphics fields presents several challenges for using 3D animation in simulation-centric studies. A set of examples illustrates how to meet these challenges.
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