Method for regulating a test bench arrangement

A test bench comprising a test bench arrangement in which a rotating specimen is connected to a rotating loading machine via a mechanical shaft connection and which is designed to detect, by measurement, at least one angular velocity prevailing in the test bench arrangement, and an automation system which is designed to model the rotational behavior of the test bench arrangement and thus the dynamic behavior of at least the measured angular velocity and a specimen angular velocity prevailing in the specimen using a first system of differential equations, characterized in that the automation system is further designed

• to model the specimen torque generated by the specimen using a second system of differential equations and thereby model the direct component of the specimen torque on the basis of a first subsystem of the second system of differential equations, and model m harmonics of the specimen torque on the basis of a number m of further oscillating subsystems of the second system of differential equations in the form of oscillators selected from the group consisting of damped oscillators and undamped oscillators,
• on the basis of the first and the second differential equations, to design a state observer for estimating the specimen angular velocity and the specimen torque, the measured angular velocity representing an input of the state observer,
• to determine the specimen angular velocity and the specimen torque by means of the state observer, and
• to use the determined estimates of specimen angular velocity and specimen torque for controlling a component selected from the group consisting of at least one control angular velocity prevailing in the test bench arrangement and at least one control torque prevailing in the test bench arrangement.