DYNA4 - Function Development in Closed-Loop System Tests

DYNA4 is an open simulation environment for the virtual test driving of cars and commercial vehicles. The physical models include vehicle dynamics, powertrain, combustion engines, electric motors, sensors and traffic. Virtual test drives with DYNA4 facilitate safe and efficient function development and testing. Closed-loop simulations on the PC run faster than in real-time, e.g. for use in early development stages (MIL, SIL), or can be executed on Hardware-in-the-Loop systems (HIL) when ECUs are available. DYNA4’s 3D environment simulation with road infrastructure and traffic provides virtual test fields for assisted and automated driving wherever environment perception plays a key role.

Advantages

Frontloading: testing and development of ECU functions in early stages
Safe testing in critical driving maneuvers, including near crash situations or vulnerable road users
Parameter variations for thousands of automated driving tests
Weather independence: reproducible environment conditions with rain, snow, fog, wind etc.
Direct comparison of configurations, variants etc.
Optimization of complex systems, e.g. operating strategies with many application parameters
Traceability of test runs through management and versioning of simulation input and output

Application Areas

ADAS / AD Vehicle Dynamics E-Mobility Combustion Engines

Driver Assistance Systems and Autonomous Driving

Simulation of lidar sensor and image segmentation as input for ADAS function development

Environment perception: Lane detection, traffic sign recognition, object detection, simultaneous localization and mapping (SLAM) etc.
Comfort functions: Adaptive cruise control (ACC), traffic jam assistant, parking pilot etc.
Safety systems: Pre-crash, front collision warning (FCW), automated emergency braking (AEB), lane keeping assistant, blind spot monitoring etc.
Car2x: Connected and cooperative driving

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Virtual Test Drives with Precise Vehicle Dynamics

Simulation-based ESC homologation, Sine-with-Dwell test

Chassis control systems: Electronic stability control (ABS, ASR, ESC), active roll compensation, trailer stabilization, active suspension control etc.
Steering control: Power steering, rear-wheel steering, superposition steering etc.
Commercial vehicles with up to two trailers
Virtual axle and tire test stands for generation and validation of model parameters
Complete vehicle simulation for testing the interdependencies of networked ECUs

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System Simulation and Energy Management

Energy management analyses: Virtual driving of NEFZ, WLTP and others

CO2 reduction: Energy consumption prognosis for vehicles with conventional, hybrid or full electric powertrains and auxiliary units
Predictive energy management functions
Hybrid control units: Development, optimization and testing of hybrid control
functions

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Simulation of Combustion Engines from MIL to HIL

Engine management functions and on-board diagnosis
Proof-of-concept studies during early development
HIL simulators for testing of engine control units and components
Analysis of design concepts for gasoline, diesel, and alternative fuels passenger car engines, high-speed race engines, heavy duty engines and marine engines
Design of controllers for supercharging, variable valve actuation, HCCI, and EGR
Test and development of controllers for exhaust aftertreatment
Hardware-in-the-loop tests for engine controllers with cylinder pressure sensing
Feasibility studies and evaluation of engine design

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DYNA4 Key Features

Virtual Vehicle Environment & Sensors Workflows & Connectivity

Virtual Vehicle: Models for Closed-Loop System Tests

Seamless integration of vehicle control functions and strategies
One or more vehicles under test, e.g. for cooperative driving
Use-case dependent choice of model fidelity from basic models to high-fidelity models
Vehicle dynamics for cars, trailers, trucks and commercial vehicles
Pre-configured, modular drivetrain models with mechanical and electrical components
Engine dynamics based on mean-value or detailed thermodynamic cylinder models
Driver models for different applications

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Traffic, Environment, Sensors and 3D-Visualization

Impressive 3D-visualization of your DYNA4 simulations
Comprehensive and user-extensible object library with signs, vehicles, cyclists, pedestrians, animals, etc.
Driving on OpenDRIVE road networks without conversion
Deterministic traffic to create specific scenarios with prescribed behavior, e.g. NCAP
Stochastic yet reproducible traffic for explorative testing, e.g. driving on highway in dense traffic
Sensor simulation on decision level with object lists or on perception level with signals from camera, lidar, radar or ultrasonic sensors

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Integration, Workflows and Connectivity

Powerful model and scenario authoring in DYNA4 Studio
Open and modular model architecture based on MATLAB/Simulink
- Comprehensive DYNA4 model component libraries
- Seamless integration of your Simulink models, FMUs or C-code
Flexible integration into your work processes and tools
- DYNA4 as master for your simulation tool chain
- DYNA4 as slave with headless operation in your common work environment
Open-loop and closed-loop simulation
Integrated test automation and parameter variation
Standard interfaces e.g. for CANoe, ROS and ADTF
Integrated versioning and teamwork functionality
Model, data and results management
Continuous re-use of your tests from MIL, SIL to HIL
Support of all common HIL platforms

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Highlights of DYNA 4.0

New productizing and a range of model improvements

DYNA4 Studio

Model and scenario authoring
Simulation data management
Simulation automation and variation
Simulation result analysis and reporting

DYNA4 Run

Enables execution of simulation models in accelerated or compiled mode
Execution with DYNA4 Studio workflows on desktop or real-time targets
Execution as exported runtime simulation projects, e.g. in CANoe, ADTF, cloud applications etc.

Improved generation of OpenDRIVE roads

Generation and visualization of OpenDRIVE roads from GPX data
Support of <geoReference> tag in OpenDRIVE files, e.g. for GPS receivers
Parameterization of OpenDRIVE objects to be displayed in 3D animation

More flexible scenario parameterization

Arbitrary reference paths independent of road layout
Initial speed for vehicle under test for shorter acceleration phase
Consolidated driver parameters for most common applications

Model updates for driving dynamics

Consolidated driver parameters for most common applications
Updated example parameter sets for Compact vehicle
Improved example parameterization for Model Configuration Truck 4x2
Improved robustness of TMeasy5 handling tire model

Model updates for electrified powertrains

Easier creation of customized wiring harnesses with improved Create Circuit function
Extended consideration of energy losses in electrical system and drivetrain like wiring harness, clutches and electric motors
New examples for battery configurations

Updates for ADAS sensor models

Deterministic rendering of physics-based sensors, e.g. for image stitching or sensor fusion
New sensor type: lidar sensor with single vertical scan layer

Improvements for 3D visualization with DYNAanimation

Retro-reflective road signs and road marks
Animated wheels for traffic vehicles
Range of new geometries
Simulation start can optionally be delayed until animation project is done loading
Simplified generation of user-defined signals for DYNAanimation

Runtime application export

Improved integration into CANoe with integrated animation control
Export of Windows Executable for stand-alone execution without MATLAB/Simulink
Multiple S-Function exports of same model with one click, e.g. for multi-ego setups

Product Information

Documents Publications Knowledge Base

Fact Sheet: Short overview of product facts (PDF)

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Presentation
Stimulation of ECUs as in real driving tests: Virtual test drives with DYNA4 and CANoe
Presentation
Open Standards as a Leverage for the Development of Automated Driving

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Do you have technical questions and are you looking for suitable answers? Our knowledge base provides the most important FAQs for you.

Visit the knowledge base

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Training

DYNA4 Training Courses

DYNA4 offers various possibilities to efficiently develop ECU functions through virtual test drives. But only those who know all these options can fully exploit the potential and save time and money.

Therefore, use our training courses to use DYNA4 even more efficiently in your everyday work!