Verification of an Automotive Headlight Leveling Circuit and Application Using Smart Component Property Extraction

The paper discusses the simulative circuit verification of a power bridge in the context of its application, i.e. an automotive headlight leveling system. It especially emphasizes a topic, which is often neglected in mixed-domain modeling: the identification of the related component properties, e.g. the armature friction or torque constant of an electric motor. Typically, there are two ways to approach the problem: one is to scan the data sheets of the components. The other is to set up direct measurements of the component properties. The first approach opens a wide space, as the spec windows are often larger. The second requires substantial, additional effort. The paper offers a third opportunity, which relies on a measurement setup for system evaluation, which was available anyway.