Method for controlling an actuation assembly

Method for controlling an electric actuation assembly (1), comprising a current controller (2) connected to an actuator (10), the actuator (10) comprising a motor (11) coupled with a gearbox (12) having a known reduction ratio, the actuation assembly (1) being provided with an output (13), the method comprising the following steps:

• applying a plurality of first known output forces on the output (13) of the actuation assembly and recording using the current controller (2), a plurality of associated first input intensities to be applied at the input of the actuation assembly (1) to obtain a balance of the actuation assembly (1) in a first direction of the output (13);
• establishing, by interpolation, a first characteristic function of the actuation assembly (1) linking a controlled intensity at the input of the actuation assembly (1) and a force obtained at the output of the actuation assembly (1);
• applying a plurality of second known output sources on the output (13) of the actuation assembly (1) and recording, using the current controller (2), a plurality of associated second input intensities to be applied at the input of the actuation assembly (1) to obtain a balance of the actuation assembly (1) in a second direction of the output (13) opposite to the first direction;
• establishing, by interpolation, a second characteristic function of the actuation assembly (1) linking a controlled current at the input of the actuation assembly (1) and a force obtained at the output (13) of the actuation assembly (1);
• establishing, on the basis of the first characteristic function of the actuation assembly (1), the second characteristic function of the actuation assembly (1) of a magnetic constant of the motor (11) and of the reduction ratio of the gearbox (12), a control correction coefficient intended to be applied by multiplication to a control input value;
• controlling the actuation assembly (1) by applying the control correction coefficient.