Creation of a Virtual Framework for Control Logic Development and Validation with a Driver-In-the-Loop (DIL) Simulation
2022-01-0487
03/29/2022
- Event
- Content
- Current simulation tools can help expedite the development and validation of powertrain control systems compared to traditional methods that use actual vehicle testing. In this study, a co-simulation platform has been developed by connecting MATLAB/Simulink, IPG CarMaker, GT-Suite, and PTV Vissim to create virtual calibration and validation environment. The purpose of developing this platform is to save time and reduce cost during vehicle testing by replacing physical calibration and robustness validation with simulation-based processes. The platform enables a virtual environment that replicates the local road networks as well as randomly generated traffic patterns that an ego vehicle can interact with on the virtual road. By combining the strengths of each software listed above, the developed virtual environment can provide realistic drive scenarios for testing new vehicle control algorithms. One of the main challenges in the virtual test platform is that the driver model that creates necessary inputs to vehicle dynamic model is not realistic, and the behavior often deviates from actual human driver, especially when it has to interact with the other vehicles. To avert complexity of developing a human-like driver model, a Driver-In-the-Loop (DIL) system has built by replacing the driver model in the software and test the control system under predefined or randomized traffic situations. Outputs from steering wheel, accelerator pedal position (APS), and brake pedal position (BPS) on the driver simulator are connected with the vehicle dynamic model and provide required inputs for this real-time simulation. The engineer can repeat the same test platform can also support a virtual Failure Mode and Effects Analysis. This paper explains the structure and configuration of the DIL simulator and demonstrates its usage for control logic validation.
- Citation
- Fan, S., Sun, Y., Lee, J., Ha, J. et al., "Creation of a Virtual Framework for Control Logic Development and Validation with a Driver-In-the-Loop (DIL) Simulation," SAE Technical Paper 2022-01-0487, 2022, .