The ASM Vehicle Dynamics Model is an excellent basis for developing and testing vehicle dynamics ECUs, such as ESP, steering and active damping ECUs. It is ideal for vehicle dynamics investigations in early development phases. A user interface lets users intuitively configure the vehicles and define maneuvers and roads.
For commercial vehicles, diversity is a standard. Scania has a nearly endless selection of vehicle types and modular vehicle configurations. And the generic electronic control unit (ECU) system has just as many variants. In a new test lab, Scania shows how this system can be validated with reliability.
Vehicle dynamics are the showpiece of car manufacturing. Porsche uses an efficient, seamless vehicle development process to pass on excellent vehicle dynamics genes from the first development steps to the final product.
Powerful tool chain for validating driver assistance systems
Well-coordinated tools for simulation, testing and visualization are indispensable in validating modern driver assistance systems. Developers need a quick, easy way to model the properties of the vehicle under test, as well as road networks, traffic and electronic control units (ECUs), and to visualize driving maneuvers realistically. Together, the Automotive Simulation Models (ASMs), ModelDesk and MotionDesk from dSPACE form a perfectly coordinated tool chain.
No modern vehicle ever reaches the market without first undergoing exhaustive tests. And test vehicles alone are no longer enough to test the complex electronic control units. This job is performed by simulation models, which shift ECU development into the virtual reality of a virtual vehicle. Dr. Hagen Haupt, head of dSPACE's Modeling Group, explains how the dSPACE simulation models are meeting this challenge.
This paper presents a method for designing and tuning suspensions purposefully and quickly with the help of vehicle dynamics simulation. The method is based on the Automotive Simulation Models (ASM) from dSPACE, which have been extended for this use case. The ASMs support design engineers through all phases, from creating a virtual prototype up to close-to-production fine tuning during the test phase. This paper describes the necessary properties of the vehicle dynamics model that go beyond the functional scope of common handling models. At Daimler AG, the ASMs accompany the development during test drives, both for the pure vehicle dynamics design of the vehicle and for coupling the vehicle dynamics control systems to hardware-in-the-loop (HIL) systems.
SUV and trailer simulation
ASM Vehicle Dynamics is an open Simulink® model for the real-time simulation of vehicle dynamics behavior. The model is typically used on a dSPACE Simulator/SCALEXIO to perform hardware-in-the-loops tests on electronic control units (ECUs) or during the design phase of controller algorithms for early validation by offline simulation. The model supports all relevant phases of the model-based development process.
All of the Simulink blocks in the model are visible, so it is easy to add or replace components with custom models to adapt the vehicle’s properties perfectly to individual projects. The ASMs’ standardized interfaces allow the vehicle dynamics model to be easily expanded to meet specific requirements or even create a virtual vehicle. Roads and driving maneuvers can be created intuitively by using graphical tools with preview and clear visualization All parameters can be altered during run time.
For realistic vehicle simulation, the vehicle model is designed as a multibody system. The model consists of elements such as a drivetrain with elastic shafts, a table-based engine, two semi-empirical tire models, a nonlinear table-based vehicle suspension model with kinematics and compliance, a steering model, and aerodynamics. An environment with a road, maneuvers, and an open- and closed-loop driver is included as well. All parameters can be altered during run time. To simulate brake systems, models of a dual-circuit hydraulics system and a pneumatics system are available as add-ons.