Vehicle Dynamics Control Systems: For a Safe Drive

The goals of vehicle dynamics control systems are twofold: First, they make vehicles safer by intervening to provide support in problematic driving situations. Second, vehicle dynamics control systems can be adjusted to implement the individual DNA of an OEM. Because vehicle dynamics control systems influence vehicle movement, several of the systems have an important role to play in achieving the goal of autonomous driving. For example, the ESC deploys the braking action in autonomous vehicles.

Vehicle dynamics control systems are undergoing continuous development to further improve vehicle safety and comfort. As a result, ESC now encompasses a variety of additional support functions, significantly increasing the effort needed for validation during development. At the same time, more and more vehicle variants are reaching the market for each model. As the system must be tested for each vehicle variant, this is also associated with additional testing effort. 

Managing this additional effort requires improving the efficiency of the development process. Given the limited number of real prototypes available, supplementing real test runs with virtual test runs as part of the approval process offers a solution to this problem. Our simulation solutions allow you to test and approve systems, even at an early stage of development.

ESC

Efficiently developing vehicle dynamics control systems

ESC is considered one of the most important inventions in the area of vehicle safety, which is why in recent years, its installation has become mandatory for new vehicles in many countries – including in the EU, the USA, Japan and South Korea. It is safe to assume that ESC will become even more widespread – the World Health Organization is even calling for making the safety system compulsory across the globe. Testing and validation of the ESC vehicle dynamics control system is therefore extremely important.

Value-added ESC functions

Here is how you can use virtual test driving in the development of your vehicle dynamics control system:

  • The driver model IPGDriver can represent various driver types, modeling a broad range of driving styles – from cautious to hectic and aggressive – allowing you to easily test your system’s robustness virtually.
  • With the vehicle data set generator, your tests will be underway in no time. On the basis of the vehicle data generated in CarMaker, the vehicle model can be populated with data at the push of a button so that both fail-safe tests and the majority of functionality tests can be carried out easily. 
  • The Fail Safe Tester supports you in conducting fail-safe tests by generating electrical errors in real time. This makes it possible to initiate fail-safe tests during maneuvers reproducibly and with millisecond accuracy.
  • With our ESC-HIL, for example, you can test whether your system also protects the vehicle against rollover at low on-board voltage.

Functioning of ESC

Simulation-based ESC homologation

Simulation-based ESC homologation brings the increased effort involved in development under control

The growing diversity of vehicle variants and the concurrent ESC requirement mean that not every variant can be approved by means of a real prototype. The solution is simulation-based ESC homologation. The underlying principle: The approval of a variant is simultaneously conducted in the real and virtual vehicle. If the results are consistent, additional variants can be tested using the virtual vehicle alone. This approach is described in ECE Regulation 13 H of the United Nations Economic Commission for Europe.

In this manner, homologation becomes possible even in the SIL and HIL phase, thereby allowing the tests to be conducted at an earlier point in the development process. With CarMakerTruckMaker and MotorcycleMaker, we can provide you with the simulation software you need. Test management is also easy, as Test Manager and the existing archiving mechanisms offer optimal support.

The CarMaker product familiy also facilitates cooperation between OEMs and suppliers during the approvals process. By allowing vehicle data to be exchanged in encrypted form between OEMs and suppliers at an early stage without the need to wait for the real prototype, you can save time and money.

Find more information here.

Simulation-based ESC homologation: CarMaker at Bosch/Daimler (Apply & Innovate 2012)
1.34 MB / PDF / 2012 / Daimler, Klaus Wüst; Bosch, Albert Lutz / English
Simulation-based ESC homologation: CarMaker at PSA (Apply & Innovate 2012)
1.35 MB / PDF / 2012 / PSA, Dr. Alfonso Porcel / English
Simulation-based ESC homologation: CarMaker at Opel (Apply & Innovate 2012)
6.04 MB / PDF / 2012 / Adam Opel AG, Karl Michael Hahn / English
Variant verification: CarMaker at Porsche (Apply & Innovate 2010)
0.61 MB / PDF / 2010 / Porsche AG, Dr. F. Fuhr / English
Easy Move function: CarMaker at PSA (Apply & Innovate 2010)
3.44 MB / PDF / 2010 / PSA, Olivier Collin - Alten / English

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