主动安全与操舵限制

安全性在汽车的发展中继续发挥着重要作用。 高级驾驶员辅助系统(ADAS)的传统开发和测试是昂贵,耗时和存在潜在危险的。Modelon正在帮助沃尔沃汽车等客户采用基于模型的方法进行主动安全系统开发。

使用Dymola内嵌的车辆动力库进行建模,Modelon使诸如沃尔沃汽车等制造商能够用数学模型准确地预测车辆在新场景,参数和配置下的行为。

此外,OPTIMICA 编译工具包有助于解决与车辆的机动性相关的动态和稳态仿真及优化问题。

 

 

[Translate to Chinese:] In a collaboration between Volvo Car Corporation and Royal Institute of Technology, Modelon’s solutions have been used to evaluate the potential to improve safety and performance through new ways of actuating and controlling vehicle handling dynamics, especially under limit conditions.

In this work, two types of Modelica models have been used. The first, a full multi-body representation of an XC90, is used for virtual evaluation of the designs through simulation. It is implemented using the Vehicle Dynamics Library and is thoroughly validated against measurement data. This model gives a detailed response of each actuator input, and it is possible to evaluate high-fidelity response of driver and controller actions.

The second model is a low fidelity model used for dynamic optimization. Using the OPTIMICA Compiler Toolkit tool, the Modelica model is compiled into code that is solved by state of the art optimization solvers. With this setup the researchers find the optimal trajectories and control outputs for a given vehicle configuration. This allows to make early assessment of the expected performance gain when choosing between plausible configurations.

The video below shows how the distance needed to avoid an emerging car shortens as you add more actuation.

[Translate to Chinese:] Dassault Systemes Contact Magazine

[Translate to Chinese:] Volvo Cars: Active Safety 

了解不同的参数变化如何影响车辆允许我们以有效的方式调整传感器,测量仪和控制器,以继续提高安全性。

Bengt Jacobson , Technical Specialist, Vehicle Control Architecture, Volvo Cars

相关产品

Vehicle Dynamics Library

 OPTIMICA Compiler Toolkit