Road test simulator and method for synchronizing control of the road test simulator

[0018]A road test simulator according to the embodiment of the invention described here can be operated in two operating modes: operating mode 1: “roller drives vehicle” and operating mode 2: “vehicle drives roller.”

[0019]In the operating mode 1, “roller drives vehicle,” a rotational speed setpoint is defined by means of a higher-level control via, e.g., a control panel. This speed setpoint is used to control asynchronous motors, which in turn drive rollers on which the wheels of the vehicle are positioned. The road test simulator control ensures that all four rollers are operated in angular synchronization, taking into account, if circumstances warrant, a predefinable relative position of the rollers in relation to each other. In this operating mode, the brakes of the vehicle are not applied and the clutch is disengaged.

[0020]In the operating mode 2, “vehicle drives roller,” a driver of the vehicle indirectly defines the rotational setpoint speed by actuating the gas pedal of the vehi