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Put the road into your office!
Virtual test driving means much more than just running models. It means shifting the complete workspace of the test driver from the road into the laboratory - with test maneuvers and processes as well as diagnostic and application tools.
- Skilled driver for real test driving interacts and operates real vehicles and test devices.
- Sophisticated driver for virtual test driving interacts and operates virtual vehicles and test devices.
The precise models of CarMaker ® are the basis for your reliable simulation results. The models are embedded into a universal architecture of central services and online devices. Your efficient CarMaker ® test team consists of IPGDriver ™, IPGRoad ™, IPGTrailer ™ and IPGTraffic ™. This guarantees the highest performance, flexibility and precision for your virtual test driving tasks.
The usability of Software/HIL to reconstruct driving maneuvers and test scenarios is extremely simple. You only have to give your IPGDriver ™ your driving and maneuver instructions and he will carry them out instantly.
Given that the IPGDriver ™ has complete interactive access to all devices and systems he operates the testing, measuring and executive devices autonomous.
Key benefits
- Entirely new Road2Rig potential and maximum productivity on the HIL test bench.
- You can concentrate fully on your use cases when carrying out virtual test drives.
- Easy reconstruction of specific constellations of traffic situation and driving maneuvers.
- You can assign a freely definable list of mini-maneuvers to each object of the traffic control.
Concrete examples: Maneuver- and event-based testing
The maneuver-based testing method of CarMaker ® optimally supports virtual test driving. As in the real test drive you assign actions to the mini-maneuvers such as driver activities, system interventions or failure insertions. With the interactive maneuver control you are able to reconstruct even the toughest use cases. The combination of open-loop and closed-loop mini-maneuvers in the longitudinal and lateral direction are easy to realize (s. examples).
- Slalom
- µ-split Maneuver
Detailed example - µ-split Maneuver
Mini-Maneuver |
Driving Action |
Longitudinal |
Lateral |
|---|---|---|---|
| 0 | Speed up to 100kph, approach µ-split area | IPGDriver | IPGDriver |
| 1 | Marker Roll - Free Rolling | Open Loop | IPGDriver |
| 2 | Marker Break - Braking, hold steering | Open Loop | Open Loop |
| 3 | After 1sec - steer correction | Open Loop | IPGDriver |
| 4 | At 50kph - failure impact e.g. wheel sensor defect | Open Loop | IPGDriver |
| 5 | Brake up to stand still - diagnostic | Open Loop | IPGDriver |
- Central control unit - click to enlarge
Triggering of maneuver actions
The maneuvers of the test vehicle and the IPGTraffic ™ objects are controlled by a central control unit which also establishes a connection between them. With the settings of time, distance, route and event based triggers, the user is able to activate minimaneuver sequences of the traffic objects dependent on the maneuvers of the test vehicle.
The user can also start the minimaneuvers with special events such as the approaching of a route point, the distance between two vehicles or the different velocity between the test vehicle and leading vehicle. This alternative starting of minimaneuvers is possible due to the central state observer. It monitors simulation variables selected by the user and evaluates them coevally to the simulation program as to defined conditions.