Servosystem

A servosystem, including adjusting means (1) for changing the position of a mechanical element (3), a first transducer (5) for forming an adjusting voltage which is a measure of a desired position of the element, a second transducer (15) for forming a response voltage which is a measure, of the actual position of the element, and detection means (13) for forming an error signal (If) which is a measure of a difference between the response voltage and the adjusting voltage, which detection means have a first and a second input (11, 21) which are connected to the first and the second transducer, respectively, and an output (23) which is connected to an input (27) of control means (29) for generating, in dependence on the value of the error signal, a control signal (Vc1, Vc2) for controlling the adjusting means, characterized in that between one of the first and second transducers (5, 15) on the one side and the input (11, 21) of the detection means (13) which is connected to the relevant transducer on the other side there is connected a compensation resistor (31), and that the detection means are arranged to conduct a compensation current through the compensation resistor, said compensation current having such a value such that it causes a voltage drop across the compensation resistor which is substantially equal to the difference between the response voltage and the adjusting voltage, and are also arranged to form the error signal (If) in such a manner that the value of the error signal is proportional to the value of the compensation current.