Two excitation units anchored to two points on the car body vibrate the vehicle.

Two excitation units anchored to two points on the car body vibrate the vehicle during the test. They have electromagnetic actuators that can exert a force of up to 8,000 N and have a range of motion of 12.5 mm. The devices can operate in the 5-200 Hz frequency range, and the exerted forces and their frequency simulate driving the car along the selected route.