SIMULATOR OF MECHANICAL PROPERTIES OF A STEERING SYSTEM

A simulator of previously chosen mechanical properties of the steering system of a device such as an aircraft employs a controllable limiter for simulating the mechanical Coulomb friction of the control member and is arranged in a negative feedback loop and having two control signal inputs which determine the maximum and minimum outputs of the limiter in association with a further input signal corresponding to the friction concerning the control member. The limiter interrupts output until the level of the Coulomb friction to be simulated is exceeded.