Automotive Simulation Models (ASM)

ASM: Simulation Tool Suite

The ASMs are a tool suite which consists of simulation models for automotive applications that can be combined as needed. The models support a wide spectrum of simulations, starting with individual components like combustion engines or electric motors, to vehicle dynamics systems, up to complex virtual traffic scenarios. The models can be handled easily and intuitively with ModelDesk, the graphical user interface.

Simulation Areas

• Combustion engines (gasoline, diesel)
• Vehicle dynamics (passenger car, truck, trailer)
• Electric components (motors, batteries, loads)
• Vehicle environment (road traffic, objects, traffic signs)

Benefits of ASM The implementation of each model is open and traceable right down to the Simulink basic block level, so it is easy to supplement or replace components with customer-specific models. This means that the properties of each model can be optimally adapted to individual projects. The standardized interfaces of the ASMs make it easy to extend models and even create entire virtual vehicles. Road networks and traffic maneuvers can be easily and intuitively created using graphical parameterization tools with preview and clear visualization.

Main Features	Description	Key Benefits
Open Simulink models	All model blocks are visible	Application-specific models can easily be added or used to replace model components
Online simulation	Real-time simulation on real-time hardware, e.g., DS1006	Hardware-in-the-loop simulations with production-level ECUs
Offline simulation	Simulations as early as the controller algorithm design phase	Controller validation in early development stages
Online tunable parameters	Direct parameter access during real-time simulations	Online parameter optimizations and behavior studies
ASMSignalBus	Simulation signals are part of a structured Simulink signal bus	Standardized and fast access to model variables
Model interoperability	Modular code generation, i.e., for specific subsystems	Faster code generation, preserving approved code

Combustion engines

The ASM engine models are ideal for developing and testing engine and exhaust gas aftertreatment ECUs. They simulate a combustion engine, including all the necessary components, as a controlled system for the ECUs. There are models for diesel and gasoline engines with different injection systems and exhaust gas aftertreatment systems. The real-time simulations can be performed with mean-value models or with physical models.

Vehicle Dynamics
The ASM Vehicle Dynamics Model is an excellent basis for developing and testing vehicle dynamics ECUs, such as ESP, steering and active damping ECUs. They are ideal for vehicle dynamics investigations in early development phases. Models for passenger vehicles, trucks and trailers are available. A user interface lets users configure the vehicles and define maneuvers and roads graphically.

Electrical Components

Vehicle electrical systems, electric drives and inverters, as well as starter batteries and high-voltage batteries, are all virtualized precisely by the simulation model for electric components. The model supports tasks such as developing and testing hybrid ECUs, battery management systems and indicator light controls. Users can parameterize the modeled components graphically to fit the real controlled system exactly.

Driver Assistance Systems
A comprehensive traffic model with road users and environmental objects is available for developing and testing driver assistance systems. The various sensor models in the simulated test vehicle detect the other road users and also the static and dynamic objects in the virtual environment. The traffic scenarios and the environment are easily defined graphically.

Model Design Philosophy

To offer the best possible support for customer-specific requirements, dSPACE has chosen an open model concept. You can view the models right down to the level of standard Simulink blocks. The dSPACE Automotive Simulation Models therefore provide enormous flexibility for projects that require dedicated simulation models. The open model approach allows perfect adaptation to individual projects and requirements. This is done by modifying models or by replacing and adding modeled components.

Virtual Vehicle

dSPACE Automotive Simulation Models are a collection of well-coordinated models that you can easily combine to build anything from extended models to a whole virtual vehicle. In addition to gasoline and diesel engines, there are models for vehicle dynamics and brake hydraulics, electric systems, and traffic. Combined models work together in one simulation.

Offline and Online Simulation

The tool suite ASM can be used in combination with real controllers in a hardware-in-the-loop environment (HIL or online mode), or for model-in-the-loop simulations (PC or offline mode). The same model configurations and parameters can be used seamlessly throughout all the steps from function development to ECU testing. ASM supports real-time code generation via The MathWork’s Real-Time Workshop® and dSPACE’s RTI for online simulation on a dSPACE real-time system.