Method for control of a cylinder

A method for controlling a cylinder, comprising steps in which:

• a cylinder is provided comprising a cylinder body and a piston translationally movable inside the cylinder body;
• a servo valve is provided, configured to regulate the power supplied to said cylinder, in such a way as to control the position of the piston in the cylinder body;
• a measuring device is provided comprising at least one first position sensor (28) and one second position sensor;
• measurements are taken of the position of the piston in the cylinder body simultaneously with the first position sensor and the second position sensor;
• at least one first displacement speed of the piston is determined on the basis of the piston position measurements obtained with the first position sensor;
• at least one second displacement speed of the piston is determined on the basis of the piston position measurements obtained with the second position sensor;
• the presence of at least one malfunctioning position sensor is detected;
• then
• when the presence of a malfunctioning position sensor is detected, each of the first and second determined displacement speeds of the piston are compared with a modelled or predetermined displacement speed of the piston, in such a way as to identify the most reliable position sensor.