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
Driver Assistance Systems and Autonomous Driving
- 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
Virtual Test Drives with Precise Vehicle Dynamics
- 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
System Simulation and Energy Management
- 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
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
Standards for Virtual Test Drives
In light of increasingly complex driving functions and their networking in the vehicle, simulation has become a standard tool from function development to validation. But how can virtual test drives be used flexibly and sustainably across disciplines? Standards such as OpenDRIVE, OpenSCENARIO, OSI, FMI, and MDF are important cornerstones in the area of system integration, data management, and test evaluation.
In our technical article "Standards for Virtual Test Drives" (Hanser Automotive Issue 6/2020) we explain how the consistent use of standards enables the reuse of virtual test drives continuously along the entire development process.
DYNA4 Key Features
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
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
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, FMU, 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
Highlights of DYNA4 R5
Support of Standards and Easier Workflows
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Flexible toolchain integration with standard support
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FMU for model export
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MDF for result data
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OSI for sensor model integration
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Usability and workflow improvements
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New simulation view for simulation execution and model build
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Easier handling of variants with new concept for referencing parameter files
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New logging concept with dedicated view
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Easier creation of example and test rig projects
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New example datasets
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Basic vehicle dynamics model for ADAS testing
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Characteristic roll and pitch behavior
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Low parametrization effort
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Reduced license requirements
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Sensor improvements
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Improved object-based traffic sensor models with shaped lobes and virtual mounting positions for the definition of the sensor reference coordinate system
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Improved sensor output on detection level with bounding box points and segmented lidar point cloud
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3D visualization
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More flexibility for the automated visualization of OpenDRIVE road objects and lane types
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Enhanced analysis of scenarios with online display of relevant signals, orthographic top view and distance measurement tool
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Compatibility updates
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Currently supported software versions and real-time platforms on the compatibility list
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Product Information
- Fact Sheet: Short overview of DYNA4 product facts (PDF)
- Sensor simulation: Environment perception with virtual cameras, lidar, radar, ultrasound sensors and object lists in virtual test drives with DYNA4
Do you have technical questions and are you looking for suitable answers? Our knowledge base provides the most important FAQs for you.
- Highlights of DYNA4 R5: Support of standards and easier workflows
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Highlights of DYNA 4.0: New productizing and a range of model improvements
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!
